CS214772B2 - Automatic record disc changer - Google Patents

Abstract

A phonograph record player mechanism includes a tone arm 14, means for mounting the tone arm for rotation about an axis, a cueing lever lift rod 596 adapted to engage the tone arm at a point spaced from the said axis, an effectively flat spring 590 having one end thereof connected to the lift rod, means defining a fixed shoulder 602 in engagement with one side of the spring, and a cueing lever 604 which is rotatable about a substantially horizontal axis and has a portion which engages the other side of the spring between the lift rod and the shoulder when the cueing lever is rotated about the said horizontal axis. <IMAGE>

Description

BACKGROUND OF THE INVENTION The present invention relates to an automatic record changer, and more particularly to an automatic record changer that plays back a series of record records arranged on the centering spindle of the changer.

Today's automatic record changers are very complex and expensive to manufacture. One of the inverters manufactured, which represents approximately 80% of the world's total production of automatic record changers, has approximately 220 parts, and assembling requires a lot of work and testing of these parts. In addition, most of the current vinyl record changers currently manufactured are sensitive to the warping and bending of the metal base plate on which the vinyl record components are arranged. The base plate is typically made of a relatively thin sheet metal, and when the base plate collapses or bends, the drive arm positioning mechanism is shifted and malfunctions. This occurs during production, during transport or when the inverter is used at the customer's site. The machines at the center of the turntable are connected to the portable arm assemblies by means of complex kinematic devices, so that the portable arm assemblies cannot be tested and adjusted separately before mounting on the base plate.

As a result, the manufacturing costs of these converters are substantially increased. In addition, conventional types of vinyl changers require a separator connected to the transfer arm laying device to stop the transfer arm above the resting rest and to lay the transfer arm on the tutorial rest at the end of the playback of the plate. However, these devices are also susceptible to warping and bending of the base plate, which breaks the relative position of the parts of the base plate with the resting abutment and the part of the base plate on which the arm of the cartridge is rotatably supported.

The velocity cut-off devices used in many known record changers usually consist of two or more parts which are frictionally connected to each other and which are oriented at random in the event of impact or vibration when the main transmission is stopped. In order to avoid this phenomenon, a relatively large frictional force is used between the plates to prevent this adjustment. However, if such a high frictional force is used, it is difficult to turn off the inverter operating with a low contact force of the 0.01 N cartridge arm.

In U.S. Pat.

4 liters when replacing a vinyl record where the vinyl record is lying on a stationary turntable. This arrangement is entirely suitable for the purpose for which it was designed. In this arrangement, however, the intermediate drive wheel must be disengaged from the rotating plate rim before stopping the turntable. U.S. Pat. No. 3,408,081 discloses a device in which a set of two turntables is used, which both lower down during the replacement of the vinyl record until the upper turntable has reached a fixed stop and as a result disconnects from the lower drive plate. turntable. This turntable stopping solution is perfectly suited for the purpose for which it was designed. However, it would be desirable to find a simpler turntable stopping device that would be easier to integrate into the individual record changers.

These drawbacks are overcome by an automatic vinyl record changer comprising a main cycling wheel, a drive member for rotating the main cycling wheel during a one-turn change of the vinyl, a cantilever arm rotatable away from the cycling wheel, and an elongate coupling connected at one end to the cantilever arm a side of the pivoting bearing of the arm according to the invention, characterized in that on the main cycling code a pivot is arranged on the main cycling code, in which a bore is formed through which the connecting member passes; the coupling member by means of a pin engaged with the main cycling wheel.

Said cam is preferably formed by a pair of projecting arms arranged on the main cycling wheel on opposite sides of the pin.

The pin on the main cycling wheel is in contact with the projecting cam arms on the coupling (the member engages with this coupling member, a pair of radially projecting feet being arranged on the journal and the coupling member wedged between the journal and the projecting cam arms.

Said feet are preferably flexible and abut on the main cycling wheel.

The connecting member extends through an opening in the pin whose dimension in the vertical direction exceeds the transverse dimension of the connecting member, wherein a pair of projections abutting an annular wall formed on the main cycling wheel is formed on the pin.

(The main cycling dimension is rotatably supported on the support member and the pin is rotatably mounted in a vertical bore formed in the main cycling wheel and engages a cam disposed on the support member in the pin path. The pin has a rounded underside that abuts the cam.

A centering movement blocking member of the pickup arm is provided in the trajectory arm path, and the coupling is coupled to a record player replay and exchange switch.

Preferably, in the coupling member is formed a slot into which the pin arranged on the main cycling wheel extends away from its center, the pin having a cross-section through which a certain position of the main cycling wheel is wedged in the slot. Said pin has a semicircular cross section or a circular cross section. In the latter case, a taper is formed in the slot in which the pin is wedged. This pin is slidable when the cartridge arm is stopped in the taper.

A resting aperture is provided in the travel arm of the pickup arm, on which a stop for this pickup arm is provided. Said stop is preferably part of a resting rest.

The switching device is arranged on the main cycling wheel and there is a clearance connection between the switching device and the transfer arm.

A guide for the coupling member is formed on the main cycling wheel and a clearance connection is formed between the coupling member and the transfer arm.

The arm of the cartridge is connected to a positioning plate in which a cutout is formed forming a joint with a clearance into which one end of the coupling member extends, between which a spring is arranged between the positioning plate and the positioning plate.

The end of the coupling member is displaceably disposed in the clearance-forming cutout, and the opposite end of the coupling member engages the switching device.

The connecting member is preferably formed of a wire and the slit is formed by an eye on the wire and the constriction is formed in the eye of the wire. The wire of the connecting member is preferably rigid.

A new and higher effect of the invention is that the automatic record changer according to the invention has approximately half the number of parts compared to known record changers and can be produced in series at low cost and with minimal labor effort.

The automatic record changer of the present invention is relatively insensitive to warping and bending of the motherboard of the transducer and the pickup arm used with the lifting device is relatively insensitive to warping and bending of the motherboard.

A further advantage of the automatic vinyl record changer according to the invention is that the positioning of the transfer arm over the resting support at the end of the playback of the vinyl is not substantially influenced by the bitter and bending of the motherboard or the relative displacement of the components. The position of the pickup arm at the end of the record playback is determined by physical contact with a portion of the resting support. This contact allows the positioning of the arm of the cartridge to be precisely adjusted before the next lowering of the arm of the cartridge for resting rest, i

A further advantage of the construction of the automatic record changer according to the invention is that the transfer arm is set above the resting rest and lowered to the locked position on this resting rest somewhat before the middle stage of the disc playback. The transmission arm drive mechanism is provided with a friction clutch which allows this stop in the middle phase.

A further advantage is that the arm of the portable arm is mounted on a separate subassembly which is connected to the main cycling wheel of the transducer only by two elements of the arm of the portable arm, the positions of which are relatively independent of warping and bending of the base plate.

In addition, the portable arm subassembly for automatic vinyl record changers can be manufactured as a single unit and mechanically adjusted and electrically adjusted before being built into the main motherboard of the changer.

The design of the transmission arm drive mechanism for the automatic vinyl record changer of the present invention is simple and reliable and ensures smooth movement of the transmission arm by means of a flexible drive coupling that allows the transmission arm to stop at any time, especially in the middle phase of the record playback.

At the same time, during the playback of the recorder, the transmission arm drive mechanism for the automatic record changer according to the invention functions as a speed-disconnecting device requiring a low contact force of the tip.

Simple components are used to connect the transfer arm to the main cycling wheel to control the horizontal movement of the transfer arm, which at the same time also act as the actuators of the speed switch during playback of the plate.

A further advantage of the invention resides in the simplification of the design of the lifting lever for the automatic record changer, which serves for ¹ manual lifting and lowering of the arm of the portable.

Another advantage of the invention is that the turntable is stopped during replacement of the record by an orifice that is simple, economical and does not require the turntable drive motor to be disconnected or the turntable to be lowered.

Another further advantage of the invention is that the automatic transducer is provided with a single control which is used to start and stop the transducer, as well as for repeated playback, in which the recorder stored on the turntable is constantly played back while the transducer is in the position. “Repeat Play” does not move.

Thus, an advantage of the invention is the extremely simple design of an automatic vinyl record changer in which the portable arm subassembly is connected to the main cycling wheel located in the region of the changer spindle by only two members. One of these members is used to lift and lower the pickup arm. The second member serves for the horizontal displacement of the shoulder arm during the replacement of the record, and also as the actuator of the speed switch during playback of the record. Both of these members are designed so as not to damage the device if the transfer arm is accidentally displaced or retained during replacement of the record. The presence or absence of a vinyl record on the spindle stop is indicated by a sensing element that moves toward the stop in the initial phase of the replacement vinyl record. If the vinyl record is not present at this stop, the cartridge arm is lowered into the stop groove shortly before the middle phase in the resting rest and the turntable drive motor is turned off at the end of this playback cycle.

Stopping of the turntable is simply done by braking the rim of the turntable, whereby the turntable hub continues to rotate. Stopping of the turntable while the drive motor continues to rotate its hub is made possible by a simple washer made of a material with a low coefficient of friction that is inserted between the turntable and its hub.

The control typically used for turning on, off, and override has a fourth position in which the record changer replayes the record stored on the turntable without turning off the device. This 'repeat play' position is achieved by turning the control to the 'on' or 'off' position and then rotating the control to the 'on' and 'off' positions. During this movement, a locking force is applied to the control and an audible click sounds to inform the drive operator that the "repeat play" position has been reached.

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further elucidated by a non-limiting example of its embodiment, which is described with reference to the accompanying drawings, in which:

FIG. 1 shows a plan view of the automatic record changer according to the invention, part of the turntable is cut out to show the record replacement device, FIG. 2 shows a view of the automatic record changer from FIG. 1 from below, - cbr. Fig. 3 is a perspective view of the transducer arm subassembly of Fig. 1, the transducer is turned off; 1A, FIG. 5A is a partial cross-sectional view as in FIG. 5, but on a larger scale, FIG. 6 is a partial cross-sectional view taken along line 6--6 of FIG. 1; 2A, FIG. 7A is a cross-sectional view taken along line 7A-7A of FIG. 1, FIG. 8 is a sectional view taken along line 8--8 of FIG. FIG. 1 which shows the drive arm of the portable arm in its rest position,

Fig. 9 is a cross-section similar to Fig. 8 but showing the coupler arm coupling in a position to drive the coupler arm; FIG.

12, but showing a speed switch at 45 rpm, FIG. 12B is a cross-sectional view taken at 12B-12B of FIG. 12, FIG. 12C is a cross-sectional view taken at 12C-12C in FIG. 12A-12D of FIG. 12A, FIG. 13 is a sectional view illustrating the operation of the drive &amp; 13, which shows the main gearbox in various states during the change of the record, FIG. 20 is a view similar to that of FIG.

13 illustrating, however, the operation of the inverter shut-off device of FIG. 1 during the playback cycle, FIG. 21 is a partial cross-sectional view taken along line 21--21 of FIG. 6 showing the adjuster arm of the portable arm in a set position for records; 22 is a bottom view of the portable arm assembly of FIG. 3, FIG. 22A a view similar to that of FIG. 22 but showing a method of arranging the portable assembly subassembly on the motherboard; FIG. 23 is a perspective view of the portable arm assembly of FIG. partially in cross-section, a portion of the subassembly is removed to show the operation of the lift lever with the pickup arm raised, FIG. 23A is a partial cross-sectional view taken along line 23A-23A of FIG. 23, FIG. 24 is a view similar to FIG. showing, however, the lifting lever in the position in which the arm of the cartridge is lowered, FIG. 25 is a partial cross-sectional view taken along line 25-25 of FIG. Fig. e shows the control element of the converter of Fig. 1 in the "off" position, Fig. 25A is a partial section similar to Fig. 25, but to a somewhat enlarged scale, Fig. 25B is a sectional view taken along line 25B-25B of Fig. 25; Fig. 25C is a sectional view taken along line 25C-25C of Fig. 25B; Fig. 26 is a view similar to Fig. 25 but showing the actuator in position. Fig. 26A is a partial view similar to that of Fig. 26, but to a somewhat enlarged scale, Figs. 27, 28 and 29 are similar to those of Fig. 26; showing, however, the main cam at different positions in the shutdown after the last record, FIG. 27A is a partial cross-sectional view taken at 27A-27A in FIG. 27, FIG. 28A is a view similar to FIG. 28, but on a slightly enlarged scale; 30 is a view similar to FIG.

25, but showing the control knob in the &quot; disengage &quot;

26, but showing the device in a single vinyl playback position; FIG. 32 is a view similar to that of FIG.

31, but showing the main gear wheel ¹ at the next point of the auto record replacement, FIGS. 33 and 34 are partial sectional views similar to that of FIG. 5A, but showing the individual positions of the components during the detection of the last record, FIG. giant.

25, but showing the device in the &quot; repeat playback &quot; position, FIG. 33B is a partial view similar to that of FIG. 33A but on a somewhat enlarged scale; used in the converter of FIG. 1, FIG. 36 is a top plan view of the records of FIG. 35, FIG. 37 is a side view of the arrangement of FIG. 35 when used to play a 178 mm diameter recorder with a large hole adapter 38 is a partial side view of a variation of an embodiment of a record plate detector according to the invention similar to FIG. 5, FIG. 39 is a sectional view taken along line 39-39 of FIG. 38; FIG. a top view of a variation of the actuator of the speed switch and the arm of the portable arm that can be used in the converter of FIG. 1, FIG. 41 is a sectional view taken along line 41--41 of FIG. 40; FIGS. 42 and 43 are top views of other drive and shut-off variations similar to the embodiments of FIGS. 40 and 41; Fig. 1, Fig. 45 is a cross-sectional view taken along line 45-45 of Fig. 44, Fig. 46 is a cross-sectional view taken along line 46-46 of Fig. 44, and Fig. 47 is a partial view of a variation of the embodiment Fig. 48 is a partial top view of a further variation of the embodiment of the invention, wherein a modified driving gear is used to move the arm of the cartridge in a horizontal plane; - where a two-plate speed cut-off device is used.

The automatic record changer of the invention shown in Figs. 1 to 34 consists of a metal base plate 10 on which the turntable 12, the transfer arm 14 and the balancing arm 16 are mounted. 12 is rotatably mounted on a center spindle 18 on which a column of records may be mounted, and the balancing arm 16 moves from its rest position somewhat beyond position ₄ shown in FIG. 1 to a position above the records so that the records are at the stop on the record. center spindle 18 balanced.

Portable arm 14 is rotatably mounted on the subassembly 20 which is provided with ^four calm Vou abutment 22 which protrudes. upwardly from the subassembly 20 and is provided with a relatively deep cut-out 24 which is formed in its upper part and into which it can be. turn off - turntable changer stored - portable arm 14. Further, in the subassembly 20, a lifting lever 26 is rotatably mounted which can be moved from the approximately vertical position shown in Figures 1 and 24 to the position shown in Figure 23 when it is tilted backward. If the lifting lever 26 is in the vertical position shown in FIG. 1, it does not raise the arm 14 of the cartridge. However, if the lifting lever 26 is rotated rearwardly, it will lift the transfer arm 14 from the vinyl so that it can be manually mounted on another location of the vinyl or moved over the rest support 22. Lift lever 26 - thus can be used to manually mount the transfer arm 14 onto the vinyl resting on the turntable 12, or for storing the shoulder 14 of the cartridge in the slot 24 in the rest support 22.

the turntable size and size control knob 27 used in the illustrated embodiment can be moved between position and 33 1/3 rpm. and at 45 rpm. In the -33 1/3 rpm position, the arm 14 is automatically set to play 305 mm diameter recorders, and in the - 45 ₄ rpm position, the arm 14 is automatically set to play recorders with a diameter of 176 mm. If the records with a diameter of 176 mm are to be played with a small hole, they can be placed on the stopper on the central spindle 18, and the balancer 16 rarely balances this column of records. If vinyl records having a diameter of 176 mm are to be played with a large opening, a suitable adapter can be mounted on the center spindle 18, as will be apparent to those skilled in the art. In the case of a record plate with a diameter of 254 mm · with 78 rpm, the combined control knob 27 can be equipped with a third locked position before the 45 rpm position. min, which will be described in more detail later. Furthermore, the automatic record changer is provided with a multipurpose control element 29 having four positions, i.e., off, repeat, on and off positions, which are aligned from the front side of the changer to the rear. When the multipurpose control 29 is moved from the "off" position to the "on" position, the turntable drive motor 12 is turned on and when the multipurpose control 29 is moved to the "disengaged" position, it automatically starts the record replacement cycle. An important feature of the automatic record changer according to the invention is that the record replacement device is designed such that when the multipurpose control 29 is moved to the "on" position and when it is moved back to the "repeat" position, the multipurpose control acts the element 29 has a small detent force that does not apply when the multi-purpose control element 29 is moved from the "off" position to the "on" position. At the same time, an audible click is generated which informs the operator that the multi-purpose control 29 is in the &quot; repeat &quot; position. When the multi-purpose control 29 is in the "repeat" position, the record changer plays the record repeatedly on the turntable 12. As already mentioned, the "repeat" position cannot be reached directly by moving the control 29 from the "off" position to the adjacent position. "repeat". The actuator 29 must first be moved to the "disengaged" position so that the turntable drive motor 12-turns on and then moved back to the "repeat" position. Thus, in this arrangement, a single multipurpose actuator 29 is used which has multiple functions for which several actuators need to be used in conventional inverters.

Another important feature of the transducer according to the invention is an embodiment of a base plate 10 in which a support member 23 is formed. Most parts of the record changer device are disposed on the upper and lower sides of the support member 28, . This also avoids the usual subassemblies on the motherboard which are, as a rule, used to accommodate the workpiece components of the record replacement device. The use of the support member 28 as a carrier for the control levers and other components of the record replacement device will significantly reduce the number of parts required and, in addition, the amount of time required to assemble these parts in the manufacture of the automatic record changer. The indicated arrangement will now be described in more detail. The main cycling wheel 30 is rotatably supported on a column 32 which is mounted on a support member 28 of the base plate 10 from which it projects upwards. The main cycling dimension 30 is captured on the column 32 by means of a suitable element, for example a Seger fuse 34. The eccentric support member 28 of the base plate 10 accommodates a bearing 36 in which a center spindle 18 is mounted. This hub 38 rests on a foot bearing 40 which is arranged around the lower end of the bearing 36 and rests on a support member 28 of the base plate 10. The hub 38 is mounted on the bearing 36 by a ring 37.

On the underside of the base plate 10, a drive motor 40 for driving the hub 38 is arranged behind the support member 28. The shaft 42 of the drive motor 40 extends upwardly through an opening 44 in the base plate 10. Above the base plate 10 are pulleys 46 prb 45 · -Rpm and pulleys 48 for, 33 rpm. The hub 33 of the turntable 12 is connected to one of these pulleys 46, 48 by a strap 50 running along the periphery of the hub 38.

Another important feature of the automatic record changer according to the invention is that the turntable 12 is not directly connected to the hub 38, but instead lies on a thin and relatively wide washer 52 which is disposed between the upper end of the hub 38 and the lower side of the turntable 12 near the central recessed portion 54 of the turntable 12. The pad 52 is made of a material with a low coefficient of friction, for example Teflon and the like. As a result of this arrangement, the turntable 12 can be stopped during replacement of the vinyl by the braking device described in more detail below, so that the turntable 12 is stationary when the vinyl is placed thereon. This design also allows the hub 38 of the turntable 12 to be continuously driven by the drive motor 40 during the replacement of the vinyl. The washer 52 has a sufficiently low coefficient of friction to allow the turntable 12 to stop, without overloading the drive motor 40 without the connection between the turntable 12 and the hub 33 need to be disconnected by some means, for example by raising or lowering the hub 38 or the turntable 12. A suitable coating 56 is disposed on the top of the turntable 12, The turntable 12 is mounted in the hub 38 by means of a ring 39 and the center hole in the turntable 12 is rotated on the upper shaft portion 41 of the hub 38, which serves as a bearing of the turntable 12 during braking.

In order to drive the main cycling wheel 30 during the record replacement cycle, the hub 38 is provided with teeth 53 formed at the front end thereof that engage the circumferential teeth on the main cycling wheel 30. During playback, the 3D cycling wheel is, of course, locked in an initial position in which a modified portion 60 of the main cycling wheel 30 is located opposite the teeth 58 such that the teeth 58 are not engaged during playback.

The record change cycle is triggered by a switching device 62 (FIG. 1) which is rotatably mounted on the upper side of the main cycling kota 30, which is accomplished by a pin.

61, which is located in the center bore in the recessed portion 63 of the cover (FIG. 5) of the main cycling wheel 30. The switching device 62 is provided with a vertically positioned bead 66 (FIG. 1) in which a vertically extending shoulder 68 is formed. This shoulder 68, when the shoe 66 of the switching device 62 moves at a predetermined angle inwardly, impinges on a projection 70 formed on the hub hub 38 above the teeth 58. The movement of the switching device 62 takes place at the end of the playback cycle. by means of a velocity cut-off device, which will be described in detail later, once the switching device 62 has been rotated so that the shoulder 68 has come into the projection path 70, the main cycling wheel 30 is rotated enough to engage the teeth 58 the main cycling wheel 30 and rotates the main cycling wheel 30 during the cycle - replacing the vinyl record by one revolution.

One of the important features automatické- converter ¹ it gramodesek present invention consists in that the rotation of the main wheel of cycling · 30 is used to achieve the desired lifting -a -otáčení portable arm 14, which is carried out by two members that are subassembly 20 the shoulder arms 14 are connected so that they can be easily disconnected. As a result, the cartridge arm subassembly 20 can be manufactured and tested separately prior to installation on the base plate 10. After this installation, the subassembly 20 can easily be coupled to the automatic plate changing device by said coupling members. In addition, these couplers are designed so that warping or bending of the motherboard -10 will not cause the operation of the recorder to malfunction or cause an error in the setting of the arm 14 of the recorder.

Portable arm lifting mechanism

First, the method of lifting the portable arm 14 from the vinyl stored on the rotating plate 12 at the beginning of the vinyl replacement cycle will be described. The lift arm 72 of the arm 14 of Figure 3 has an end portion 74 angled at right angles that is supported in bearings in the arm assembly 14 'subassembly 20'. In particular, the subassembly 20 comprises a main housing 76 which is provided with a pair of downwardly facing columns 78, 80. The plate 82 is secured to the columns 78, 80 by screws 84, 86 - FIG. 22.

The main housing 76 is provided with an upwardly extending portion 83 in which a circular opening 90 is formed for the upper end of the end portion 74 of the lifting rod 72. The upper end of the circular opening 90 forms a bearing for the upper end of the end portion 74 of the lifting rod 72 and The lifting rod 72 is consequently mounted in two cd spaced apart bearings, so that it can be raised and lowered continuously. Upper end of end section. The lifting rod 72 is provided with a thread onto which the adjustable head 92 is screwed. The head 92 is arranged to abut the lower surface of the plate portion 94 of the arm 14 of the cartridge.

The plate 82 is provided on its side with a downwardly directed shoe 98 on which an inclined cam surface 98 is formed located at the lower edge of the shoe 96. The lifting rod 72 of the portable shoulder 14 is pressed against the cam surface 93 by a coil spring 100 whose lower end it is curved around the lifting rod 72 of the pickup arm 14. The coil spring 100 extends upwardly through an opening 102 - FIG. 22 - formed in the plate 82 and extends into the interior of an upwardly extending housing 104 disposed on the plate-82. The upper end of the coil spring 100 is secured to the upper wall of the housing 104. the rod 72 is bent at a right angle and is pressed against the downwardly facing guide track 108 - Fig. 7, which ^is' formed in the underside of the main · of cycling - wheels 30. the preload applying a force of a coil spring 100 acting upward and clamping - This sulfur seeks to rotate the end portion 106 of the lifting rod-72 toward the center of the main cycling wheel 30.

As the main cycling wheel 30 begins to rotate at the beginning of the record replacement cycle, the end portion 106 that is permanently pressed against the guide track 108 under the upward torque exerted by the coil spring-100 toward the cam surface 98 follows the guide portion 110 7, which causes the lifting rod 72 to rotate in the bearings of the end portion 74, but since the coil spring 100 still pushes the lifting rod 72 up, this lifting rod 72 is also lifted up as a whole when rotated. as it slides over the cam surface 98.

As a result, the end portion 106 can be pivoted so that the lift bar 72 can be lifted to the position shown in FIG. 4, even if the end portion 106 of the lift bar 72 contacts the end of the groove 114 - FIG. 25 - in the base plate 10. The shoe 96 is further provided with bumps 111, 112 formed at both ends of the cam surface 98 that define the movement of the lifting rod 72 during assembly. Once the lifting rod 72 has been moved upwardly, the head 92 at the upper end of the lifting rod end portion 74 engages the plate portion 94 and lifts the pickup arm 14 from the vinyl that has just been played on the turntable 12. In this context, it should be noted 3 and 4 is shown in a position above the resting abutment 22. However, the lifting arm 14 is lifted by means of the lifting rod 72 even when the lifting arm 14 rests on a record bearing mounted on the turntable 12,

The end portion 106 of the lifting rod 72 extends upwardly through a groove 114 - FIG. 7 - formed in the base plate 10 so that the end of this end portion 106 can be pressed against the guide track 108, as already described. The coil spring 100, after moving the end portion 106 from the portion 110 of the guide track 108, keeps the lifting rod 72 in the raised position so that the cartridge arm 14 remains in the raised position during the part of the record change cycle during which the turntable 12 stores the next record. The portable arm 14 is then moved inward to adjust to a particular record size, which will be described in detail later. However, just before the end of the vinyl replacement cycle, the end portion 106 of the lifting rod 72 abuts the portion. 116 of the guide track 108. The portion 116 is not as steep as the portion 110, v. as a result, the arm 14 of the cartridge is continuously lowered on the cam surface 93 as the end portion 106 extends to the portion 116 of the guide track 108 and moves outwardly as the lifting rod 72 slides down against the force exerted by the coil spring 100 on the cam surface 93. however, the end portion 106 abuts the center portion 118 of the guide track 108 - FIG. 26. The center portion 118 has the shape of an arc centered at the center of the main cycling wheel 30, so that the bias applied to the guide track 108 and to the main cycling wheel 130 by the end portion 106 is constant and at the same time minimal when the main cycling wheel 30 approaches its initial or locked position. In this context, it should be noted that - when the lifting rod 72 as a whole is moved upward at the beginning of the vibration change cycle, the end portion 106 relative to the portion 110 of the guide track 108 moves upward. Thus, when lowering the arm 14, the end portion 106 moves downwardly relative to the portion 116 of the guide track 108. When the end portion 106 extends along the central portion 118 of the guide track 103 and the main cycling wheel 30 is applied as it approaches the locked minimum force position, the end portion 106 does not move relative to the center portion 118 of the guide track 108 or upwards. In this regard, it should be noted that lifting and lowering of the arm 14 occurs only as a result of the rotation of the end portion 106 of the lift rod 72 controlled by the guide track 108, so that a very simple and efficient device is provided. It should further be noted that the stroke size is defined by the cam surface 98 in the subassembly 20 of the shoulder arm 14, so that warping of the base plate 10 does not affect the lift height of the shoulder arm 14 as is common in conventional linear motion suction devices connected directly to the the main cycling wheel. It should further be pointed out that the lifting rod 72 operates smoothly with relatively little force, since the cam surface 93 is disposed some distance from the end portion 74 about which the lifting rod 72 rotates. This design allows the cam surface 98 to be gradual, whereas if the cam surface 9B is located close to the end portion 74, it would have to be relatively steep and would require substantially greater forces to move along it. The sole surface 98 can be spaced from the end portion 74 only because the end portion 74 is mounted in two spaced apart bearings, as previously described, so that the lifting rod 72 can be lifted smoothly and with little force.

Horizontal movement of the arm of the cartridge

Next, the manner in which the arm 14 is moved in a horizontal plane will be described. One essential feature of the arrangement according to the invention is that the shoulder 14 is connected to the main cycling wheel 38 by a coupling 120 so that during the first part of the vinyl replacement cycle, the shoulder 14 is moved outward and then moved over the vinyl. which has been placed on the 'turntable' plate 12 and lowered into the insertion groove on this record. The coupler 120 also acts as a speed switch actuator during the playback cycle. The connecting member 120, which may simply be a rigid wire, is connected to the main cycling wheel 30 at a point located away from its center by a guide 122. The other end of the connecting. 2. The positioning plate 124 is coupled to and moved by the arm 14 of the portable arm 14 in a manner that will be described in detail later. The coupling 120 has a right-angled end 126 that extends through a central bore in the housing 128 that is loosely received in a recess formed in the positioning plate 124 and forming a connection 130 with a clearance. As better seen in FIG. 11, the housing 128 is provided with a head 132 that slides over the top. the surface of the positioning plate 124 outside the edges. Between the widened end portion 136 at the bottom of the housing 128 and the underside of the positioning plate 124 is provided. a weak spring 134 such that a weak frictional force is exerted, which prevents movement of the housing 128 in the cutout when this frictional force is not overcome. However, if the sleeve 12B abuts one end of the cutout, a forced force connection occurs between the coupling 120 and the positioning plate 124.

In the following, the guide 122 will be described in detail. An opening 140 is formed in the main cycling wheel 30, which is connected to a recess 142 of enlarged diameter which is formed on the underside of the main cycling wheel 30. an annular wall 144, and an outer annular wall 146. This outer annular wall 146 is provided with a pair of opposing cams 148, 150 extending upwardly from the top of the annular wall 144. A pin 140 is loosely received in the opening 140 in the main cycling wheel 30. 152, in which a narrow opening 154 is formed which extends from the bottom of the pin 152 upwardly and accommodates the end portion of the coupling member 120. The arms 156, 158 formed in the pin 152 are provided with overlapping flexible end portions 160, 162 which are terminated by feet 164, 166 which, when the pin 152 is raised in the bore 140, abuts against the recess 142 of the barrel The pin 152 is further provided with opposing protrusions 168, 170 resting on the upper surface of the annular wall 144 when the pin 152 is in the disengaged position shown in FIG. 8. In order to retain the pin 152 in the main cycling wheel. 30, the aperture 140 is provided with two opposing slots 172, 174 - FIG. 14 which allow the insert 152 to be inserted into the aperture 140 from the bottom up, whereupon the pivot 152 is rotated together with the end of the coupling 120 which is inserted into the aperture 154 and rests on the top of the wall as shown in FIG. 8.

Next, the operation of the guide 122 and the coupling member 120 in moving the cartridge arm 14 to the rest abutment 22 and then moving the cartridge arm 14 to the desired down position during the record change cycle is described. In the initial phase of the record change cycle, during which the transfer arm 14 is lifted from the record as described above, the guide 122 does not connect the main cycling wheel 130 'to the link 120 so that the transfer arm 14 does not move outward. This results from the fact that when the main cycling wheel 30 is moved from the position shown in FIG. 13 to the position shown in FIG. 14, the coupling 120 remains free in the bore 154 of the pin 152. . However, during this movement of the main cycling wheel 30, the pin 152 is slightly pivoted relative to the main cycling wheel 30 as the pin 152 follows the position of the coupling 'member 120 that passes through the transverse bore 154 in the pin 152.

When the main cycling wheel 30 approaches the position shown in FIG. 14, the coupling 120 extends upward along the inclined sections 180, 182 formed in the outer annular wall 146 so as to reach the upper surfaces of the opposed cams 148, 150. When this occurs, the coupling 120 engages the upper end of the aperture 154 a. lifts the pin 152 upwards until the lugs 164, 166 are resiliently unsafe for recess 142 in the main cycling wheel 30 as shown in FIG. 9. The cams 148, 150 have a height such that the lugs 164, 168 abut against the main cycling wheel 30 with force that is sufficient to connect the coupler 120 to the main cycling ko214772 flange 30 as it continues to rotate. However, this frictional force is not so great as to prevent the pivot 152 from rotating with respect to the main caster wheel 30, since the position of the pivot 152 is determined by the coupling 120 which extends through the aperture 154 in the pivot 152. to the pickup arm positioning plate 124 as described in detail earlier. During this pivotal movement of the pin 152 relative to the main cycling wheel 30, the beads 164, 166 slide on the surface of the recess 142, while the frictional force acting on the coupling member 120 described above is maintained.

Once the coupling 120 has been moved in contact with the upper surface of the cams 148, 150, the coupling 120 attaches to the main cycling wheel 30 while continuing to rotate the coupling 120 outward. If the speed clutch sleeve 128 is not located on the back of the spoge 130 with a play in the positioning plate 124, then the outward movement of the coupling member 120 moves the positioning plate 124 toward the other end of the play connection 130. Upon reaching this point, the cartridge arm 14 is moved outward as the main cycling wheel 30 continues to rotate. The cantilever arm 14 is moved outwardly until it abuts a stop 14 formed on the rest support 22. This stop 184 protrudes upwardly higher than the inner projection 186 and the rest rest 22. The relative position of the coupling 120 and the guide 122 to move the cradle arm 14 into contact with the stop 134 on the resting rest 22 is shown in FIG. 15.

The transfer arm 14 cannot move outward when the main cycling wheel 30 continues to rotate when it abuts against the stop 184 on the rest support 22. Further rotation of the main cycling wheel 33 is made possible by the guide 122, in which slip occurs between the coupling member 120 and the guide 122. In more detail, the frictional force exerted by the beads 164, 168 adjacent the main cycling wheel 30 is sufficient to move the arm 14 outward as described. However, this force is not so great that it cannot be overcome when the portable arm 14 encounters an obstacle, for example, a stop 184 at the rest support 22. Therefore, if such an obstacle is encountered, the coupling member 120 slides over the cam surface. -lides. thus, in the hole 154 formed in the pin 152. Thus, if the main cycling wheel 30 rotates from the position shown in FIG. 15 further to the position shown in FIG. 16, the guide 122 pushes the arm 14 against the stop 184 while the coupling 120 against the guide 122 16, however, as soon as the connector 120 slides down the inclined sections 188, 190 formed on the outer annular wall

146, the lugs 164, 166 of the pin 15.2 are no longer pressed against the main cycling wheel 30 so that the coupling 120 is away from the main; disengages the cycling wheel 30, while the cartridge arm 14 remains in position in contact with the stop 184 on the rest support 22.

After the main cycling wheel 30 has been rotated to the position shown in FIG. 17, the coupling 120 extends up the inclined sections 180, 182 so that the main cycling wheel 30 is again coupled to the coupling 120. the position shown in FIG. 17 rotates further into the position shown in FIG. 18, moving the diaphragm ПО пэдМ so that the sleeve 128 is moved toward the rear end of the clutch 130 with a play, whereupon the coupler 120 moves the cartridge arm 14 inward. Due to the disengagement of the coupler 120 from the main cycling wheel 30 during movement from the position shown in FIG. 17, the cartridge arm 14 will remain in its position beyond the rest abutment 22 for a long period of time when. a further record is placed on the turntable 12. The inward movement of the positioning plate 124 of the transfer arm 14 continues until the projection adjustment tab 192 of the 305 mm diameter formed in the positioning plate 124 encounters an upwardly projecting shoe 194 on the size-selectable locking member 196. The locking member 196 is manually moved to the 305 mm position in a manner that will be described in greater detail later. When the projection 192 of the positioning plate 124 hits the shoe 194, the cartridge arm 14 cannot move further inwards. However, since the main cycling wheel 30 is rotating further, the guide 122 permits the sliding movement of the coupling 120 again relative to the cams 148,150 of the pivot 152, as already described in connection with FIGS. 15 and 16. It should be noted that when rotating 18 to the position shown in FIG. 19, a constant thrust is applied to the link member 120 so that the sleeve 128 remains in the positioning plate 124 at the front end of the clutch 130 with clearance. 18 to the position shown in FIG. 18, therefore, the speed cut-off device is always correctly adjusted.

When the main cycling wheel 30 reaches the position shown in FIG. 16, the coupling -120 slides down the inclined sections 188, 190 so that the main cycling wheel. As a result, when returning to the locked or initial position shown in FIG. 1, it is disconnected from the coupling 120. In the locked position of the main cycling wheel: the movement of the coupling 120 is completely free since the pin 152 is now supported by the projections 168; 170 with the upper surface of the annular wall 144. The connecting member 129 is disposed approximately midway between the cams 148, -150 and spo214772 in the free hole 154 in the pin 152, as shown in FIG. 8.

Speed shut-off mechanism

Another essential feature of the transducer according to the invention is that the coupling member 190 is also used as a switch actuator during the playback cycle. At the beginning of the playback cycle, the coupling 120 is moved to the position shown in FIG. 1, the speed clutch housing 128 is located in the forward end of the clutch 130 with a play. When the cantilever arm 14 moves inwardly during the vinyl playback cycle, the coupling member 120 moves along with the positioning plate 124 of the cantilever arm 14 due to the small force exerted by the spring 134 on the underside of the positioning plate 124. This small force is sufficient to axially move the coupling member 120 in the bore 154 formed in the pin 152 without affecting the position of the speed clutch housing 128 relative to the clearance 130. Since the coupling 120 rests freely on the annular wall 144 of the main cycling wheel 30 during this movement, an extremely small force is exerted by the spring 134.

As the transfer arm 14 approaches the end of the vinyl, the coupling member 120 moves to a position where its end abuts the upwardly protruding foot 66 of the switching device 62, which is rotatably supported on the main cycling wheel 30. The switching device 62 is supported. on the main cycling wheel 30 so that it can be moved with very little force and end. thus, the coupling member 120 can move the switching device 62 without moving. of the sleeve 128 in the joint 139 with clearance. However, when. the shoulder 14 of the cartridge approaches the end of the vinyl, the projection 70 on the hub 38 of the turntable 12 hits the edge 67 of the foot 66 - FIG. 16 - at the shoulder 68 and moves the switching device 62 and hence the coupling 120 against the spring 134. Of course, this force is not • sufficient to impede the movement of the stylus tip on the vinyl in the last grooves of the vinyl. Thus, upon reaching the last few record grooves of the record, the sleeve 128 is moved backward in the clearance 130.

When the projection groove is reached on the vinyl, the link 120 is moved rapidly inwards by the transfer arm 14 so that the switching device 62 rotates considerably and its shoulder 68 moves into the path of the protrusion 70 on the hub 38 of the turntable 12. When the protrusion 70 hits the shoulder 68, the main cycling wheel 30 rotates to begin the vinyl record replacement cycle described in detail above. Said tripping by means of the coupling member 120 is made possible by the guide 122 in the locked position of the main cycling wheel 30 disconnecting the coupling 120 from the main cycling wheel 30 as described above. In this context, it should be noted that the connection of the coupler 120 to the positioning plate 124 is always set to the highest extent during the vibration change cycle, since the sleeve 128 is pulled toward the front end of the coupler 139 with play when the main cycling wheel 30 is rotated. Further, this adjustment takes place almost until the end of the record change cycle, when the main cycling wheel 30 is disconnected from the coupling 120 - FIG. 19. The position of the switching device 62 in contact with the end of the coupler 120 can be varied without affecting the correct shutdown since the coupler 120 coincides with the cartridge arm 14 at the beginning of the playback cycle. In the locked position of the main cycling wheel 30, a suitable selection of the teeth 58 and the teeth of the main cycling wheel 30 prevent the switching device 62 from moving into the path of the projection 70. The ratio of the number of teeth 58 on the hub 38 to the number of teeth on the main cycling 30 to be integer, plus two teeth on the main cycling wheel 30. When the main cycling wheel 30 is in the locked position, the teeth are adjusted such that the protrusion 70 is in the edge path 67 of the switching device 62 and hence prevents the switching device 62 from moving the toothing 58 preferably has 21 teeth and the main cycling wheel 39 128 teeth.

It should also be noted that the described speed release clutch can be omitted and the coupling prices 120 can be rotatably connected directly to the positioning plate 124. In this case, a two-part or multi-part speed release lever can be used instead of the simple switch 62. However, such a two-plate speed release mechanism is set randomly, which is usually bypassed by friction pads between two plates. When such a high friction is used, it is not possible to use the arms 14 of a small contact force of the order of 0.01 N or less, while the velocity cut-off device described above reliably releases the arms 14 of the portable with a contact force of less than 0.01 N.

The switching device 62 can be returned to its initial or rest position shown in Figure 1 by a variety of devices. One such device is shown in Figure 16 where the central portion of the coupling 120 is used to reset the switch 62 when the main cycling wheel 30 is rotated from the position shown in Figure 16 to the position shown in Figure 17. the main cycling wheel 30 rotates to 144772 le z. the position shown in FIG. 16, the coupler 120 hits the inclined upper edge 200 of the shoe 86 of the switching device 62. When the coupler 120 slides up along the inclined upper edge 200, the switching device 62 is rotated inwardly from the edge of the main cycling wheel 30 to the position shown in Figure 1. In an alternative embodiment, the teeth 58 of the hub 38 of the turntable 12 may abut the outwardly extending edge 67 of the switching device 62 and bring the switching device 62 to its initial position shown in FIG. 1, which occurs when the main cycling wheel 30 at the end of the record replacement cycle, it is approaching its locked position.

Select the size of the vinyl

Next, the method by which the record size selection locking member 196 sets 305 mm to a 178 mm diameter plate will be described. From the foregoing general description, it follows that the combined control knob 27 is used to select the size of the record and áček-turn and can be moved between 33/3 position -rpm / min. and 45 rpm. Combined control knob 27 is coupled to the arm 204 of the speed selection lever 206 and the size of the vinyl - FIG. 6. The arm 204 passes the edge of the subassembly 20 through the slot 20B formed in this subassembly 20. The speed selection lever 206 under the base plate 10 is rotatably supported by a tongue 210 which extends from bottom to top through an opening 212 in the base plate 10. On the upper surface of the base plate 10 a resilient wire 214 abuts the tongue 210. The speed and size selection lever 206 is further provided with an upwardly facing foot 220 - FIG. 13, which runs through an opening 222 in the base plate 10 and the wall 224 defines a pair of locked positions of the combined control knob 27. that correspond to the position 305 mm - 33 1/3 rpm. and position 178 mm - 45 rpm. The record selection speed and size lever 206 is further provided with a downwardly directed column 226 of FIG. 6, which is connected to the record selection size locking member 196 by a connecting wire 228. The curved end portion 230 of the connecting wire 228 extends. into the opening in the locking member 198 and the other end of the connecting wire 228 fits into. grooves in the lower end of the post 226.

Locking member 196. 22 is guided by a slot 232 'in FIG. 22 formed in the locking member 196 through which the right-angled end portion 74 of the lifting lever 72 passes. The movement of the locking member 196 is further controlled by the slot 234 formed in the end of the locking member 196. 6, protruding downwardly from the protrusion 238 formed in the main housing 76 of the arm 14 of the cartridge. The protrusion 238 has a rectangular cross-section such that its portion adjacent to the pin 236 acts as a support for the end of the locking member 196. The locking member 196 is continuously pushed upward by the spring arm 240 on the plate 82. This spring arm 240 is provided with a right angle ,. which engages the underside of the locking member 196 near the abutment formed by the projection 238.

The spring arm 240 pivots the locking member 196 around the abutment 238, so that the locking member 196 is pressed against the two protruding feet 244 -fig. 6, formed on opposite sides of the right angle bent end portion 74 of the lifting rod 72. Thus, since the locking member 196 is permanently pressed by the elastic arm 240, it follows the vertical movement of the lifting rod 72. raises the pickup arm 14 from the vinyl, as described earlier, and also raises the locking member 196 due to the small elastic force exerted by the elastic arm 240. At the beginning of the record replacement cycle, the positioning plate 124 of the pickup arm 14 does not rotate. an outwardly extending foot 194 of the locking member 198 initially abuts the lower surface of the positioning plate 124. However, when the positioning plate 124 is deflected outwardly by the coupling 120, as described in detail, the locking member 196 moves upwardly to the position shown. 4, when the locking member 196 is no longer in use. In the position shown in FIG. 4, the edge of the shoe 194 is positioned so as to abut the projection 192 of the positioning plate 124 of the program plate having a diameter of 305 mm. This occurs when the cartridge arm 14 moves inward again, as described in detail in connection with FIG. 18.

When the combination control knob 27 is rotated to a position of 178 mm (45 rpm), the pillar 226 and hence the locking member 196 moves to the left, as shown in FIG. 6, so that the shoe 194 of the locking member 196 now rests on a recess 246 formed in the positioning plate 124 of FIG. When the shoe 194 is in contact with the cutout 246 of the positioning plate 124 during the record change cycle, the transfer arm 14 is deflected to engage a 178 mm diameter record groove mounted on the turntable 12.

As mentioned previously, the automatic record changer according to the invention can also be adapted to play back record records having a diameter of -254 mm. se 78 -rpm For this purpose, the positioning plate -124 is provided with a shoulder -248 which is positioned such that it can seat on the shoe -194 of the locking member 196, and - adjust the shoulder -14 of the cartridge to the - vinyl record - with a diameter of 254 mm. If - -tools - of (-254 mm diameter -se 78 - rpm / mln.) Are to be played, the -222 opening in the motherboard 10 is provided with - a third detent - protrusion which is closer to the - front of the drive - closer than the projection arresting the position -45 - rpm - When - the lever 206 - is moved - to this position 78 -rpm, the locking member -196-is moved so that - it touches the shoulders - 248. It should be noted that - the individual - locked - - positions - of the levers -205 - are arranged in order to - increase - the rotational speed of the rotatable - plate 12 - and not - the enlargement - the size - the records. and 248 are arranged on the positioning plate 124 so as to correspond to the respective positions of the combined speed control knob 27 and the size of the vinyl record.

If it is desired that the turntable 12 be rotated at three different speeds, i.e. at a speed of 33 1/3 rpm, .45 rpm. and 78 - rpm, may be as previously described. - belt - gear replaced - usual arrangement - with - three-speed intermediate - wheel - lying on the rim - rotating - plates -12. This arrangement - with the - drive inserted therein - is described in U.S. Pat. If a drive train with an intermediate wheel is used, the braking device described above is not used, the washer 52 is removed and the rotary plate 12 is fixed to the hub 38, three speed The sliding drive mechanism - with an intermediate - wheel described in the US patent specification - 490,472 levers - can - be controlled by the control wire --302, which - replaces - the control wire - - 124 - shown in this patent.

Storage - arms - cartridges

Next, a method of accommodating a portable arm -14 to enable rotation of the portable arm 14 onto the main housing -76 will be described. Between the upper end of the housing 252 'formed - in the main housing -76 - and the sunken seat -254-formed in the carrier plate 82, the carrier arm pin 250 is rotatably mounted. A yoke 256 is attached to the recessed end portion -258 of the bearing pin 250 by means of a nut -260. The nut 269 is screwed onto the upper end of the bearing pin 250 which is threaded. The bracket -256 is provided with a housing 262 which - extends downwardly - to the top of the housing -252 -and is positioned between the housing -252 and the upper end of the support pin-250. -The housing 262 thus forms the upper - bearing pin bearing -250. This support pin 250 is further provided with a conical end portion 264 which is housed in a recessed seat 254 and thus forms a foot bearing for the support pin -250.

The upper end portion -258 of the support pin: 250 has a tapered cylindrical wall from both sides. - On this upper end part 258 - is mounted - yoke -256 - with - an analogous hole - so that after inserting - bush "202" - into bush - 252 and after - tightening - - nut 2280: the yoke - 256 on bearing pin - 250 - precisely - stored.

The positioning plate 124 is disposed between two wings 266 and 268 which are part of the bearing pin -250 and are provided with apertures 270, 272 of the member -274. for deployment settings. The middle eccentric portion - 276 of the -274 member - is resiliently pressed by the spring -278 into the gap in the positioning plate 124. The upper end of the -274 member passes through a slot 280 in the upper wall of the head sleeve 76 and is provided with an adjusting head 282 with a notch that can be used to pivot - 274. The fins 266, -268 are - connected by ribs - 267, between which - a spring -278 urging - a positioning - plate 124 is mounted - a middle - eccentric -. parts - 276 a. The positioning plate -124 is provided for this purpose with a first cut-out .269 for the center eccentric portion -276 -a-free-slot 171 for ribs -267 -a spring -278 - - -img. The positioning plate -124 is also provided with a bearing slot 173 for a carrying pin -head 250. Heads 270,272 are moving in -curved-175 slots in the wings 266, -268. . The positioning plate 124 is further provided with a free cut-out 177 which allows the portable arm 14 to move relative to the end portion 74 of the lifting rod 72. By rotating the member 274, the positioning plate -124 relative to the yoke 256 moves the arm 14, so that the arm 14 can be adjusted.

The yoke 256 is provided with upwardly extending arms 284, 286, and the plate portion 94 of the arm 14 is provided with projections 288, 2890, which are adapted to be connected to the projecting arms. The arms -284, 286 of the yoke 256. In this regard, it should be emphasized that any suitable can be mounted on the bearing pin 250. -strap 14 '. This - the shoulder 14 - of course - must, of course, have - a smooth bottom - a surface corresponding to the plate portion 94 which slides - in the movement of the shoulder -14 of the cartridge inwardly - and outwardly - that is - during - the cycle - Replacements of vinyl records, warhead 92.

Speed selection. turntable rotation

Hereinafter, the manner in which the strap 50 is moved from the pulley 46 and the pulley 48, and vice versa, is in accordance with the movement. -levers -206 - for -vdlbu <speed and size of vinyl records.

The lever 206 is provided with a side arm

300 - FIG. 2, to the end of which the control wire 302. is attached. The lever -206 is further provided with an arm 301 formed on the opposite side of the arm 300, which runs over

The lower surface of the base plate 10 and thus prevents the lever 206 from twisting as it moves between 33/3 rpm. and 45 rpm. The control wire 302 is disposed beneath the base plate 10 around the support member 28 and extends upwardly through an elongated slot 304 formed in the base plate 10. The control wire 302 is provided with an elongated end portion 306 - FIG. is rotatably mounted on the underside of the base plate 10. In particular, the control plate 308 is provided with a downwardly pivoted foot 310 which is received in a butterfly opening 312 in the base plate 10. The second speed control member 314 is rotatably mounted on the control plate 308 with a downwardly directed a column 314 on the second member 314 that extends through a guide circular bore 318 in the control plate 308 and an elongated cutout 320 in the base plate 10. The column 316 is provided with a head 322 upon which a coil spring 324 is supported between head 322 and washer 323 n *. and the underside of the base plate 10. The control plate 308 and the second member 314 are rotatable However, the second member 314 is also provided with a guide pin 326 that extends through the elongate slot 328 in the base plate 10.

The control plate 308 is provided with an upwardly extending shoe 330 on which an inclined section 332 is formed. This inclined section 332 abuts the strap 50 as the strap 50 runs along the pulley 46 (45 rpm) and pushes the strap 50 upwardly. pulley 48 (33 rpm). This process occurs when the combined control knob 27 is moved from a 45 rpm position to a 33 rpm position.

The second speed control member 314 is provided with a vertically extending shoe 334 which terminates in a curved, protruding end 336, the outer edge of which is formed into an inclined arm 338.

When the combined control knob 27 is moved from 33 rpm. shown in FIG. 1 to the 45 rpm position shown in O'br. 12A, the control wire 302 is moved as a result of the movement of the side arm 300 of the lever 206 so that the control plate 308 and the second member 314 are moved relative to each other as scissors from the position shown in FIG. 1 to the position shown in FIG. 12A. The base 330 of the control plate 308 is first removed from the strap 50, whereupon the overlap 336 is brought into contact with the strap 50. The strap 50 runs along the pulley 48 and the inclined arm 338 of the second member 314 pushes the strap 50 onto the pulley 46 (45 rpm) .). This process occurs as the control plate 303 continues to move outward from the strap 50 to the position shown in FIG. 12. Similarly, if the combined control knob 27 is moved from the 45 rpm position. to the 33 rpm position, extending beyond the end 336 of the second member 314 first moves back from the strap 50, whereupon an inclined section 332 of the control plate 308 abuts on the strap 50 and moves it upwardly on the pulley 48 (33 rpm) ).

Although the use of the combined control knob 27 for selecting size and speed has certain reasons, it is also possible to control the choice of the size of the vinyl record 1 and the speed of rotation of the plate 12 by separate elements. This modification can easily be made in the arrangement according to the invention by connecting the control wire 302 with a separate control knob, which can be located at any suitable location of the motherboard 10, for example in the right front corner of the motherboard 10. The control knob 27 then serves only to select the required vinyl record diameter.

Antistating mechanism

Next, the measures used in the vinyl record changer of the invention will be described so that the transfer arm 14 when inserted into the insertion groove of the vinyl record cannot skip the opening grooves of the vinyl record. It will be appreciated from the foregoing that the size selectable locking member 196 is urged upward by the flexible arm 240. After moving the positioning plate 124 away from the shoe 194 on the locking member 196, the locking member 196 may be moved upwardly into the position shown by the flexible arm 240. 4. When the locking member 196 is in the position shown in FIGS. 4 and 23, the vertical edge of the shoe 194 of the locking member 196 is in the path of the positioning plate 124, and the protrusion 192 on the positioning plate 124 abuts the lower portion of this vertical edge. when the main cycling wheel 30 is in the position shown in FIG. 18.

One important feature of the vinyl record changer of the present invention is the limitation of the skip arm 14 when it is lowered onto the vinyl. It is monitored that the tip fits into the recording groove of the vinyl without jumping over the initial recording grooves on the vinyl. This skipping limitation is achieved by the upper edge 340 of the shoe 194 being slightly inclined relative to the vertical direction. When lowering the lock member 196 at the end of the record change cycle that is synchronous with the movement of the lift bar 72 of the transfer arm 14, the lock member 196 is moved downward when the transfer arm 14 is lowered. Similarly, as the locking member 196 continues to move downwardly, the slight inclination of the inclined upper edge 340 will allow the positioning plate 124 and hence the arm 14 to slide inwardly. along the smooth surface of the vinyl as defined and found the insertion groove on the vinyl.

In this arrangement, however, it is prevented that the arm 14 of the cartridge can skip the initial recording grooves on the record in an undefined manner. The operation described is shown in Figure 21, where the lower position 342 of the locking member 196 is shown in dashed lines. When the locking member 196 is lowered to the lower position 342, the positioning plate 124 can move smoothly inwards. In this context, it should be noted that at the end of the vinyl replacement cycle, the locking member 196 is moved further downward so that the shoe 194 is completely below the bottom surface of the positioning plate 124 so that the portable arm 14 can then move along the vinyl during playback. inwardly. Thus, the oblique upper edge 340 controls and limits skipping only in a short period of time after lowering the transfer arm 14 on the record.

In order to prevent skipping, a further additional measure may be provided in that a constant force is continuously applied to the shoulder 14 of the cartridge. To this end, a downwardly projecting column 346 is arranged on the projecting wing 268 of the support member 250 of the cartridge arm 14, the lower end of which is connected by a spring 348 to a downwardly projecting portion of the column 350 formed in the main housing 7a of the cartridge arm 14. The spring 348 exerts a continuously small outwardly directed force on the cantilever arm 14, so that the cantilever arm 14 exerts an additional force to prevent skipping when lowered into the insertion groove of the vinyl. The constant force exerted by the spring 348 during the playback cycle is also desirable in terms of reducing the wear of the vinyl records, as will be apparent to one skilled in the art. Referring to Figure 22, it should be noted that as the transfer arm 14 moves along the vinyl record inward, the column 346 moves in an arc by the center of the support pin 250 ra, the transfer port 14 so that the spring 348 extends only imperceptibly and Cycle play on the arm 14 at a substantially constant force.

If a spring 348 is used that continuously applies a constant force to the shoulder 14, this force tends to move the laptop 14 outward. When the tip rests on the smooth surface of the vinyl, the spring 348 tends to pull the shoulder arm 14 away from the vinyl. To prevent this, the positioning plate 124 may be subjected to a slight frictional force during the replacement plate cycle. To achieve this frictional force, a pin 352 is disposed in the housing 354 extending downwardly from the plate 82 - FIG. 6. The lower wall of the housing 354 is provided with an opening through which the lower end 356 of the pin 352. A coil spring 358 is disposed in the housing 354 between the lower wall of the housing 354 and the central widened portion of the pin 352. The upper end 360 of the pin 352 has a reduced diameter so that a shoulder is formed below the locking member 196 · Choice of record size. If the record changer is currently playing or is turned off, the locking member 196 is in contact with this shoulder and pushes the pin 3.52 downward so that its upper end 360- is below the underside of the positioning plate 124.

If the pickup arm 72 is lifted at the beginning of the graimnde replacement cycle, the vibration-size locking member 196 is moved upwards so that the upper end 360 of the pin 352 can abut the underside of the positioning plate 124. The pin 352 is resiliently A &quot; small &quot; force is exerted at 358 which acts on the underside of the positioning plate 124, resulting in a desired friction during the vibration change cycle. It should be noted that the pin 352 can 'contact the positioning plate 124' despite the shoe 194 of the locking member 196 impinging on the underside of the positioning plate 124. The frictional force exerted by the pin 352 acts on the arm 14 when this is lifted from the record and before it is extended outwardly enough to release the upwardly directed shoe 194 of the locking member 196. This frictional force acts on the positioning plate 124 continuously until the locking member 196 is moved below the position 342 shown in dashed lines in FIG. this frictional force is applied when the tip contacts the record and engages in the insertion groove of the record. This force does not cease even when the vinyl record is changed when the upper edge of the shoe 194 is moved below the positioning plate 124. The frictional force exerted by the pin 352 on the positioning plate 124, i.e., causes a continuous outward movement of the transfer arm 14. In this regard, it should be noted that the upper end 360 of the pin 352 also slides in a slot 232 formed in the locking member 196 for various record size dimensions, as described in detail.

Detecting the last record and shutting down

In the automatic record changer of the present invention, the last record recorder is combined with a ejection means arranged on the central spindle 18. The balancing arm 16 can be of simple construction in this embodiment and does not have to be provided with any means for ejecting the last record. this is the case with conventional inverters. If the detection of the last record is performed in the region of the central spindle 18 and the main cycling wheel 30, the design of the record changer can be substantially simplified and the connection to the transfer arm arm 14 need not be accomplished by anything other than the lifting lever 72 and the connecting This arrangement has the further advantage that the vinyl record changer is less sensitive to warping and bending of the base plate 10 and hence to possible changes in the position of the shoulder region 14 of the cartridge relative to the center of the base plate 10.

One of the other important features of the construction of the automatic record changer according to the invention is that the detection of the last record is carried out by moving the ejection wing in the same direction as the ejection wing ejects the record from the stop on the center spindle 18. As a result, for detecting the last record, which will be described in greater detail later. Now, the elements for ejecting the vinyl from the stop on the central spindle 18 will be described. A slide carriage 370 is displaceably disposed beneath the support member 28 of the base plate 10 - Fig. 5. The slide carriage 370 has a tracking pin 372 mounted at one end of the slide In the follower pin 372, a groove 374 is formed which slides in the narrower portion of the guide slot 376 formed in the support member 28 of the base plate 10. A foot 378 protruding downwardly from the support member 28 extends through an opening 380 in the slide 370. in this case, the foot 378 abuts the sides of the opening 380 so that the slide 370 is guided by the foot 378 and the guide slot 376 so that they can perform a linear reciprocating movement with respect to the support member 28. The guide track 382 of the slide carriage 370 is formed on the underside of the main cycling wheel 30 from which it projects downwardly. The ejection slide 370 is provided with a downwardly directed shoe 384, which is connected by a spring 386 to the shoe 378. Thus, the tracking pin 372 is exerted by a force that urges it to the guide track 382. It should be noted that the spring 386 is attached to the shoe 378. which is closer to the base plate 10 than the point of attachment of the spring 386 to the foot 384. Accordingly, the upwardly directed force component 386 of the spring 386 also acts on the extension slide 370.

In order to lock the main cycling wheel 30 during the record replacement cycle in its initial or locked position shown in FIG. The arresting lever 390 is provided with a pin 392 which extends through a guide slot 394 formed in the support member 28. A detent pin 396 is mounted on the arm 398 of the arresting lever 390 and extends downwardly through an aperture 114 in the support member 23. The arresting pin 396 is permanently pressed to the main guide track 402, which is rigidly connected to the main cycling wheel 30 from which it projects downwards. The main guide track 402 is provided with a groove 405 (FIG. 26) into which the locking pin 396 is pressed by means of a spring

404 located between the protrusion 406 on the arm 408 of the locking lever 390 and the bore 410 in the carrier member 28. The spring 408 tends to rotate the locking lever 390 about the pin 392 so that when the main cycling wheel 30 is in its initial or locked position the locking pin 396 is received in the groove 405. The locking pin 396 is provided with a groove 397 (FIG. 7). One edge of the groove 397 slides along the arched edge 399 of the aperture 114 in the support member 28. As a result, the locking pin 396 is stabilized as the locking lever 390 rotates around the pin 392.

The ejection slide 370 consists of a U-shaped end portion that forms a support surface 412 - Fig. 5, which is located below the main slide slide body 370 and is immediately below the opening 414 in the ejection slide 370 through which the lower end 416 of the slide . The ejection wing 418 is pivotally mounted on the spindle body 18 by means of a pin 420. The detent lever 390 is provided at the end of the arm 408 with a lateral projection 422 - FIG. in Fig. 5. The side projection 422 and the locking lever 390 are provided with a narrow arcuate cutout 424 - Fig. 25, which opens into a relatively wide cutout 426. The transition between the cutouts 424 and 426 forms a transition edge 428 located near the lower end 416 retractable wings 418.

The spring 404, which is attached to the support member 28, pushes the side projection 422 of the locking lever 390 upwardly into contact with the slide carriage 370, causing not only the spring 386 but the spring 404 to act on the slide carriage 370. In this configuration, the support surface 412 of the ejection slide 370 exerts a small upward force on the end 416 of the ejection wing 418. This power is used to determine the last record that is described in detail later.

The operation of the ejection slide 370 in the ejection of the vinyl that is mounted on the stop 430 of the center spindle 18 will now be described. The guide slide 382 of the control slide 370 is provided with a first cam portion 432 (FIG. 25) that serves to shift the slide slide 370 slightly during the initial part of the vial replacement cycle or during the presence of the vial. During the contact of the tracking pin 372 with the first cam part 432, the slide carriage 370 is moved out of the position shown in FIG. 33. During this movement, a small force is exerted on the lower end 416 of the outrigger 418 by a support surface 412 which is not sufficient to eject the record plate stored on the stop 430 from this stop 430. As a result, the lower end 416 remains in solid line in the position shown in FIG. 33 as the slide carriage 370 is moved due to contact with the first cam portion 432 to the right. During this movement of the slide slide 370, the lower end 416 of the slide wing 418 does not move, since the opening 414 in the slide slide 370 during the vibration detection phase during the vibration change cycle has a clearance relative to the lower end 416. However, if the follower pin 372 abuts the second cam portion 434 of the guide track 382 so that the ejection carriage 370 is moved further to the right - as seen in Fig. 2, the lower eyelet 416 of the ejection wing 418 abuts the edge of the opening 414 in the ejection carriage 34 so that the lower end 416 is moved to the position shown in FIG. 34. During this ejection of the outrigger 418, the upper end 436 of the outrigger 418 abuts the bottom record stored on the stop 430 and ejects the record from the stop 430 so It should be noted in this context that the position of the guide track 382 on the main cycling wheel 30 is set relative to the guide track 108 position of the pickup arm 14 so that the pickup arm 14 is raised upward and extended toward the edge. the columns of the records before the upper end 436 of the outrigger 418 ejects the lower gramode The spring 386 pushes the tracking pin 372 further towards the guide track 382 as the main cycling wheel 30 continues to rotate during the remainder of the vial replacement cycle. If desired, the extension wing 418 may be provided with an elongated vertical slot for the pin 420 and may be biased by a spring so that the pin 420 is located at the bottom of the slot. In this configuration, the outrigger 418 may be pushed down by the column of recordings located above the lower record when the lower record is ejected to the level of the stop 430. Thus, the weight of the record stack 418 is removed from the upper end of the ejector. This arrangement with the spring preload is shown and described in connection with the embodiment of FIGS. 38 and 39.

Next, a method for detecting the absence of a vinyl record at stop 430 will be described.

The main guide wheel 402 of the main cycling wheel 30 is provided with a deep groove 440 - FIG. 25. During the normal cycle of changing the record and provided that the stop 430 rotates the main cycling wheel 30 to the position where the locking pin 396 is opposite The spring 404 tends to pivot the arresting lever 390 and insert the arresting pin 396 into the recess 440, but this movement is prevented by the lower end 416 of the ejection wing 418 from contacting the transition edge 428 formed in the side projection 422 of the arresting lever 390. In this context, it should be noted from the foregoing description that the low frictional force exerted on the lower end 416 of the ejector wing 418 by the support surface 412 is not sufficient to eject the ejector wing 418 when the record plate 430 is supported. however, if during the initial phase of the vinyl record sensing cycle, i.e. during the phase when the tracking pin 372 abuts the first cam portion 432 of the guide track 382 and the ejection slide 370 are moved from the position shown in Figure 5 to the position shown in Figure 33, there is no 430 on the stop, then a small force acting on the lower end 416 of the ejector wing 418 is sufficient to move the ejector wing 418 to the dashed position 442 shown in Fig. 33. This movement of the lower end 416 of the ejector wing 418 5. The last movement of the lower end 416 in detecting a vinyl record, which occurs as a result of contact with the support surface 412, takes place just before the vibration change point of the vinyl record where the locking pin is located. 396 gets against the deep groove 440. Once the locking pin 39 6, the lower end 416 'is moved to the level of the arc cut-out 424 of the lateral projection 422 of the locking lever 390, so that the spring 404 can rotate the locking lever 390 and slide the locking pin 396 onto the bottom of the deep groove 440. toward the center of the main cycling wheel 30 is used to shut off the drive motor 40, which is performed in conjunction with the last record release device which will now be described.

Next, a control device for manually starting and stopping the drive motor 40 will be described. The multi-purpose control element 29 is connected to the end of the opening and closing lever 450 - Fig. 25, which is rotatably mounted on pin 452. The pin 452 is provided with a groove 451 - Fig. 25B, which runs in a narrow portion of the key cutout 454 formed in the support member 28 of the base plate 10. Between the release and closing lever 450 and the activation plate 456, a resilient locking member 458 is provided, which is mounted on Pin 452. Pin 452 consists of a first section 453 of reduced diameter on which the opening and closing lever 450 is rotatably mounted. diameter, which forms the arm 457, against which the elastic locking no the members 458 and the activation desk 456 so that the members 452, 456 and 458 move together. The actuator plate 456 is provided with a pair of sensor actuator arms 460 and 462 that are disposed on either side of the actuator button 464 of the slide switch 466. The switch-on and switch-off lever 450 is provided with an upwardly projecting tongue 468. The activation plate 456 is provided with a protruding hook 472 to which one end is attached - a spring 474, the other end of which is connected to an opening 476 - FIG. 1 in the support member 28 of the base plate 10. 27, which rest at rest on the upwardly projecting shoe 480 on the actuator plate 456. In the off position of the actuator 29, the spring 474 rotates the actuator plate 456 so that the shoe formed on the actuator plate 456 abuts the arm 478. The opening and closing lever 459 rotates until the tongue 468 strikes the poison en end of triangular ^1- hole 470. In the "off" position of the actuator plate 456, the actuator button 464 of the slide switch 466 by the control arm 460 is maintained in the "off" position shown in Fig. 25.

The actuator plate 456 is provided with an upwardly protruding angular foot 482 which extends through the cutout 483 - Fig. 250 - in the resilient locking member 458 and the irregular opening 484 in the support member 28 of the base plate 10. In the off state the edge of the angular foot 482 to the curved edge 486 of the irregular hole 484 and is far from the rectangular edge 488 of the irregular hole. The curved edge 486 and the rectangular edge 488 of the irregular opening 484 form an approximately rectangular corner. When the opening and closing lever 450 is moved upwards. (as seen in FIG. 25) -to the on position, the on / off lever 450 and the actuator plate 456 move as a whole, so that the angle bar 432 slides along the curved edge 486. However, once the edge is angular of the foot 482 displaced below the curved edge 486, the activation plate 456 is momentarily moved by the spring 474 to the "on" position shown in Fig. 26 when the pin 452 moves to the bottom of the key slot 454. In the same control arm 462 the actuator plate 456 -fits to the actuator button 464. and moves the slide switch 466 instantaneously to the "on" position. During this movement of the actuator plate 456, the angular foot 482 drops to the right edge 488 of the irregular opening 484. As the angular foot 482 slides under the curved edge 486, the members 450 and 456 rotate about the end of the shut-off lever 450 that is held - by the operator. However, the angular foot 482 is pressed by the spring 474 to the right-angled edge 488 and keeps the release and closing levers 450 in the locked "on" position.

If the control element 29 is manually -winded from the "on" position to the "off" position, the opening and closing lever 450 rotates about the pivot tab 468-pivoting and raises the pin 452 in the key slot 454. However, until the angular foot 482 is not moved inwardly enough to release rectangular edge 488, spring 474 cannot rotate -activate -plate 456 and close slide switch 466. It should be noted that the above-described on / off control device acts momentarily on slide switch 466 so that a relatively simple and inexpensive slide switch 466 can be used to switch the drive motor 40 on and off. In a switch-on and switch-off control device, the slide switch 466 could be temporarily held in the intermediate position where its contact could be damaged , you would need to use more expensive and higher quality switches. In the case of the above-described control device according to the invention, it is not possible for the operator to maintain the slide switch 466 in the center position between the on and off positions, since the angle shoe 482 is relative to the edges when operating the multi-purpose control knob 29. 486 and 488 moves - instantaneously.

Hereinafter, an automatic ejection device according to the invention will be described which cooperates with the above-described on and off control device to switch off the converter when the locking pin 396 enters the deep groove 440 in the main guide track 402. It should be noted is performed during that record replacement cycle, during which the bottom end 416 detects absence of the record on stop 430. As described above, the arms 14 of the cartridge move outward during the record replacement cycle until it hits the stop 184 at rest position. the arm 22 of the portable arm 14. One further feature of the invention is that the cantilever arm 14 is lowered during an interval when it abuts the stop 184 of the rest support 22 so that the cantilever arm 14 is lowered into the slot 24 during the middle part of the last record release cycle. The cartridge arm 14 remains in this lower position for the remainder of the last vinyl record ejection cycle, so that the cartridge arm 14 is not moved inwardly when the main cycling wheel 30 is rotated - to its locked position. This condition is made possible by the guide 122 which slips during this part of the movement of the main cycling wheel 38, as already described. The described arrangement has the advantage that the rest position of the arm 14 is not defined by the positioning plate 124, which would require adjustment of the rest position of the positioning plate 124.

In order to be able to lower the cartridge arm 14 after engaging the stop 184 into the middle position in the cutout 24, a latch 490 (FIG. 25) of the cartridge arm 14 is rotatably mounted on the locking pin 396. The arresting pin 396, which is riveted to the arresting lever 390, is provided with an arm 492 - Fig. 7, on which the latch 490 of the portable arm 14 is rotatably mounted. The latch 490 is preferably made of a thin resilient material. The latch 490 of the cartridge arm 14 is provided with an inwardly projecting hook projection 494 [FIG. 25) and an extended arm 496 that abuts a downwardly directed foot 498 of the support member 28 of the motherboard 10 when the locking pin 396 enters ¹ deep groove 440. The latch 490 of the cartridge arm 14 is further provided with an arm 509 sliding over the surface 502. This locks the pivoting movement of the pawl 490 of the cartridge arm 14.

As already described, during the first phase of the record change cycle, the pickup arm lifting rod 72 moves inwardly as its end portion 106 follows a portion 110 of the guide track 108 on the main cycling wheel 30. However, once the locking pin 396 engages in the deep groove. 440, the hook projection 494 of the pawl 490 moves inwardly toward the end portion 106 of the lifting rod 72, and once the extended arm 496 of the pawl 490 contacts the shoe 498, the pawl 490 is rotated so that the hook projection 494 reaches the end portion 106 of the lifting rod 72. 26. When the locking pin 396 exits the deep groove 440 'to the position shown in FIG. 27, the hook projection 494 engages the end portion 106 of the lifting rod 72 and moves it to the intermediate position shown in FIG. 27. At this point on the record change cycle, the transfer arm 14 has already been lifted over the record and moved outward, so that it touches When the end portion 106 of the lifting rod 72 is moved outward by the hook projection 494 of the latch arm 490, the arm of arm 14 is lowered into the slot 24 in the rest arm 22. The locking pin 396 runs further around the circumference. 27, until latch 490 keeps the lifting bar 72 in the position shown in FIG. 27 until the end portion 106 of the lifting bar 72 abuts a portion 116 of the guide track 108 just before the end of the record change cycle. abutting on the portion 116, the pick-up arm 72 of the pickup arm 14 is moved further down the cam surface 98 and the end portion 74 of the pickup rod 72 is lowered while the pickup arm 14 remains in the slot 24 in the rest support 22.

In order to control the tripping and closing control device 450, 456, which switches off the drive motor 40 when the locking pin 396 enters the deep groove 440, the stop pawl 510 is also rotatably mounted on the locking pin 396 - FIG. 25, which rotates on the shoulder formed by the end portion 512 of the detent pin 396 of reduced diameter - FIG. 7. The release latch 510 is secured at the end portion 512 by a segment lock 514. The release latch 510 is provided with a free opening 516 - FIG. The release latch 510 is provided with an extension arm 518 terminated by a hook 520 and a lateral arm 522. Both arms 518, 522 of the release latch 510 are disposed in a recess 524 formed in a downwardly directed foot 526 of the support member 28 of the base plate 10. The pointed projection 528 of the activation plate also extends through the cutout 524 The actuator plate 456 is further provided with a hook 530 located immediately at the inclined end 532 of the resilient locking member 458. The resilient locking member 458, which is disposed between the on / off lever 450 and the actuating plate 456, is again provided with a groove for the angular foot. 482 of the actuator plate 456 so that the members 456 and 453 move together. However, the resilient locking member 458 is provided with a side shoe 534 that defines the position of the middle portion 536 of the resilient locking member 458 relative to the plane of the members 456 and 518.

During the normal record change cycle, the release latch · 510 never reaches the position where the hook 520 comes against the hook 530 on the activation plate 456. This is because the locking pin 396 never locks into the normal record change cycle deep groove 449, as described in detail earlier. However, if the locking pin 396 fits into the deep groove 440, the release latch 510 is moved so that its extended arm 518 penetrates further through the cutout 524. When the locking pin 396 enters the deep groove 440, the latch 490 of the portable arm 14 is also pivoted. As a result of contact of the extension arm 496 with the shoe 498, as already described. When the pawl 490 of the pivot arm 14 of its d-ol is rotated, the foot 538-FIG. 25 will engage the edge 540 of the release pawl 510 and rotate it about the locking pin 396 to the position shown in FIG. 26.

In this position, the hook 520 is positioned opposite the hook 530 on the actuator plate 456. When the locking pin 396 moves out of the deep groove 440, i.e. from the position shown in Fig. 26 to the position shown in Fig. 27, the hook 520 lifts the inclined end. 532 of the resilient locking member 45δ, abuts the hook 530, and after meeting members 520 and 530 slightly raises the on and off devices 450, 456 so that the pin 452 in the keyhole 454 moves upward to the position shown in Fig. 27. Due to the arrangement of all members 522, 528 and 518 in the common cutout 524, engagement of the members 520 and 530 is ensured without displacing them during the ejection cycle.

When the locking pin 396 runs after. The hooks 520, 530 remain in the hooking position described above. However, before the end of the record replacement cycle, the arresting pin 396 encounters an outwardly protruding inclined edge 542 of the main guide track 402 - Fig. 27, which moves the activation plate 456 towards the center of the main cycling wheel 36 so that the angular foot 4B2 of the activation plate 456 a rectangular edge 488 in the support member 28 of the motherboard 10. In this case, the spring 474 exerts a lateral force on the interconnected members 510 and 456 that is sufficient to move the edge of the angle shoe 432 to the right -dd position shown in Fig. 28. so that the edge of the angle shoe 482 is now above the leading edge of the curved edge 486, while the release latch 510 remains, along with the activation plate 456, in the engaged state. However, the side arm 522 of the trip latch 510 abuts the end of the cutout 524 in the shoe 526 and locks the pointed projection 528 of the actuator plate 456 so that the actuator plate 456 cannot rotate to the off position and the drive motor 40 is further connected to the power supply. The power supply to the drive motor 40 must not be interrupted, since the described belt drive of the turntable 12 has a relatively low deceleration after the drive motor 40 has been switched off and the main cycling wheel 30 could not return to the groove 405. the overrun is substantially greater, so that the drive motor 40 can be switched off earlier in the cycle.

As the main cycling wheel 30 continues to rotate, the arresting pin 396 slides down the inclined edge 544 of the main guide track 402 - FIG. 27. During this movement, the edge of the angular foot 482 of the actuator plate 456 hits the curved edge 486 of the opening 484. blocks the further movement of the hook 530 while the hook 520 of the trip latch 510 is moved away from the hook 530. As the hooks 520 and 530 move away, the actuator plate 456 is rotated by spring 474 while the edge of the angular foot 482 slides along the curved edge 436 like a pin. . During this rotation of the actuator plate 456, its actuator arm 460 abuts the actuator button 464 and moves the slide switch 466 instantaneously to the "off" position, as shown in FIG. 29. When the slide switch 466 opens, the drive motor 40 is disconnected. -and. the main cycling wheel 30 is rotated into the grooves 405 in the main guide track 402 by the force exerted by the arresting pin 390 and the arresting pin 396 by the spring 404. As already explained in detail, the main cycling wheel 30 acts at this point - vibration replacement cycle -extremely low load, ensuring that the locking pin 396 engages in the starting or locking-grooves 405- in the main-guide path- 402. If -the actuation plate 456 is now moved to the "off" position, its foot bumps 480 on the angle shoe 482 on the opening and closing lever 450 and at the same time rotates this opening and closing lever 450 to the "off" position, as shown in Fig. 29.

Manual knockout mechanism

Hereinafter, a method of replacing a vinyl record can be initiated manually by moving the multi-purpose control element 29 from the "on" position to the "off" position. This procedure is described with reference to Fig. 30, where the opening and closing levers and> 450 are shown with solid lines in the "disengaged" position. In this position of the opening and closing levers 450, the actuating plate 456, which rotates from below with the opening and closing levers 450, is rotated to such an extent that its angle shoe 462 abuts the downwardly extending shoe 560 - FIG. 7A on the switching device 62. The shoe 560 extends through the bore 56'2 of FIG. 1 in the main cycling wheel 30. and is provided with a lateral projection 564 that abuts the angle shoe 482 when the angle shoe · -482 is moved. to - the “override” position shown on olbr. 30. When the switch-on and switch-on lever 450 is moved to the &quot; disengage &quot; position, the switching device 62 is moved such that the shoulder 68 reaches the projection path 70 on the hub 38 of the turntable 12 so that the record replacement cycle is initiated. in the manner already described. Once the actuator 29 is released, the spring 474 rotates the members 456 and 450 back to the "on" position shown in Figure 31, when the side of the angle shoe 482 abuts the rectangular edge 488 of the irregular opening 484 in the support member 28 of the base plate 10. Thus, the opening and closing lever 450 is retained or are in the "on" position.

A device for playing back individual discs

In the operation of the changer, the recorder is often required to play back the recorder, in which a single recorder is placed on the disc 12, after which the changer is switched off. For this function, the multi-purpose control 29 is used, i.e., its movement to the "disengage" position, thereby blocking the automatic-release latch 510 during the record change cycle that is initiated by the movement of the "disengage" control 29 . This procedure is unusual because, when playing a single record, no record label is stored on stop 430 -p, so the automatic shut-off mechanism would immediately shut down the record changer if the automatic shut-off latch 510 was not locked out of 214727. When the actuator 29 is moved to the &quot; disengage &quot; position, the pointed projection 528 of the actuator plate 456 engages the edge 568 of FIG. 30. In this position of the release latch 510, its arm 570 is positioned above the end of the notch 524. When the actuator 29 is released after being moved to the &quot; disengage &quot; the lever 459 is rotated back by the spring 474 to the "on" position, but the release latch 510 remains in the position shown in Fig. 30 when the arm 570 is above the end of the cutout 524.

During the record replacement cycle, which is initiated after the individual record has been placed on the turntable 12, but before it is replayed, when the main cycling wheel 30 is rotated enough to lock the locking pin 396 against the deep groove 440 as shown in FIG. 31, the locking lever 390 is only slightly rotated until the arm 570 reaches the end of the cutout 524 in the foot 523. After this engagement, the locking pin 396 cannot engage the deep groove 440 in the main guide track 402. The release latch 510 is locked by contact with the arm 570 with the shoe 526, so that the release latch 510 does not rotate and its hook 520 does not engage the hook 530 on the activation plate 456. The record replacement cycle proceeds normally; Vinyl Extend, aileron 418 from stop 430 (approximately in the middle of the cycle) On the bottom of the foot 384 on the slide 370 to the edge 572 of the release latch 510 and rotate the release latch 510 around the locking pin 396 to the position shown in Figure 32. The release latch 510 is therefore in such a position that its arm 570 is outside the end of slot 524. in foot 526.

However, this movement of the release latch 510 occurs after the locking pin 396 has moved away from the deep groove 440 so that the record change cycle, manually initiated, is completed in the usual manner.

During the manual start of the cycle, the hooks 520, 530 are situated in such a way that they cannot be connected so that the control device remains in the "on" position and the single record on the turntable 12 is played during the next playback cycle. However, when the record is played back, the record replacement cycle is automatically initiated, and since there is no record on the spindle stop 430, the changer is automatically turned off as described above, so that the changer turns off when the record is played back.

It should be noted that when the actuator 29 is in the "off" position, the pointed projection 528 of the actuator plate 456 abuts on the lateral. 25 of the release latch 510 and holds the release latch 510 in the position shown in Figure 25. does not move, so that its arm 570 remains in alignment with the slot when operating the · drive. · 524. When the cut-off and closing lever 450 is then moved to the "on" position, and the shutdown device at the last record will be locked so that the drive will not shut down automatically after the last record is played.

It should also be noted that the transducer according to the invention allows a separate vinyl record to be placed on the turntable 12, the control element 29 to be moved to the "on" (but not "disengaged") position and the arm 14 deployed on record • manually. In these circumstances, the inverter will play the record stored on the turntable 12 and then turn off automatically. Due to the fact that there is no previous record replacement cycle when manually placing the transfer arm 14 on the recorder, there is no need to lock the release latch 510. . On the other hand, when the playback of a single record is performed by moving the control 29 to the "disengage" position, an automatic record change cycle begins before the single record is played, and it is therefore necessary to lock the release latch 510 by contacting the arm 570 with the notch · 524. to prevent the drive from turning off before playing a record.

Cuts for. repeated. playback

One of the essential features of the record changer according to the invention is that the multipurpose control member 29 is provided with a "repeat" position, which is interposed between the "on" and "off" positions of the opening and closing levers 450. , and then moved approximately halfway back to the "off" position, a locking force is applied to the control member 29 and an audible click is generated to inform the operator that the "repeat" position has been reached. Thus, if the control 29 is moved to the &quot; repeat &quot; position, a single record stored on the turntable 12 may be repeatedly replayed, or if a column of record labels is stored on the center spindle 18, the record label column will be played and the last record label then it will be played repeatedly. This replay of the record stored on the turntable 12 will continue until the control 29 is moved either to the "on" or "off" positions. In order to achieve this function, the release latch 510 is locked when the control element 29 is moved to the "repeat" intermediate position so that the changer will continue to play the record stored on the turntable 12 without shutting off the drive motor 40. Suppose that the control element 29 is in the "on" position and that the arm 14. the cartridges were inserted on the record. The actuator 29 is now moved to the &quot; off &quot; position, the opening and closing lever 450 rotates as a result of the tongue 468 contacting the edge of the triangular hole 470 in the base plate 10 so that the actuating plate 456 is slidable along the rectangular edge. 438 translates translationally, and pin 452 moves upwardly into the tapered portion of key slot 454.

The opening and closing lever 450 is provided with an extended arm. 574 - FIG. 26, in which a hook 576 is formed which can engage the end of the control repeat wire 578. The extension arm 574 is. The control wire 578 is disposed beneath the support member 28 of the base plate 10, but above the activation plate 456, and rests on the upper side of the downwardly curved plate. The bent end 579 of the control wire 578 is arranged in the path of the hook 576 when the opening and closing levers 450 are rotated. The central portion 580 of the control wire 578 is located on the upper side of the supporting member 28 and is fixed in the groove 581 in the opening. The end 585 of the central portion 580 extends downwardly through the opening 583 so that the control wire 578 cannot move in the axial direction, but it is possible to bend the control wire 573 in the lateral direction.

The central part 580 of the control wire 578 has the additional function of holding the pin 452 in the key cutout 454. The outer edge of the hook 576 engages the hooked side when the shifting and closing lever 450 is moved from the "on" position to the "repeat" position. the ends 579 of the control wire 578, which deflects, so it is moved away from the base of the tongue 577. However, when the switch-off and switch-on lever 459 reaches the "repeat" position midway between the "on" and "off" positions the hook 576 and the control wire 578 move back toward the base of the tongue 577, giving an audible click. Thus, the bent end 579 of the control wire 578 is located in the hook 576 of the extension arm 574. When the opening and closing lever 450 is released, the spring 474 presses the hook 576 against the bent end 579 of the control wire 578 so that the activation plate 456 is held in the position shown in FIG. 33A, in which the angle shoe 482 still abuts the rectangular edge 488, so that a locking force is generated which keeps the opening and closing lever 450 in the &quot; repeat &quot; position. Thus, if the cut-off and cut-off lever 450 is held by the control wire 578 in the position shown in FIG. 33A touches the edge 582 of FIG. 26 to the extension arm 574 of the edge 584 of the extension arm 518 of the release pawl 510. During any of the following record change cycles, when the locking pin 396 tries to engage a deep groove 440 in the main guide track. 402, the edges 582 and 584 meet - and the release latch 510 is locked, so that the locking pin 396 cannot engage the deep groove 440. If the release latch 510 is locked, its hook 520 will not engage the hook 530 of the actuator plate. As a result, the opening and closing lever -450 is not moved to the "off" position and the slide switch 466 remains on. This process occurs every subsequent record change cycle so that the record stored on the rotary plate 12 is played repeatedly until the multipurpose control 29 is moved to either the "on" or "off" positions.

Next, the operation of the device in moving the multi-purpose control element 29 from the "repeat" position to the "off" position will be described. During this movement, the on / off lever 450 rotates around the tongue 468 representing the pin and the angle shoe 482 is moved upwardly enough to leave the right edge 488 so that the spring 474 performs the above-described instantaneous movement of the actuator plate 456 and the slide switch 466 is opened. . During this movement of the switch-off and switch-on lever 450, the hook 576 moves away from the bent end 579 of the control wire 578. On the other hand, if the actuator 29 is moved from the "repeat" position back to the "on" position, the switch-off and the switch lever 450 around the tongue 468 and its hook 576 slides around the curved end 579 of the control wire 578. When the hook 576 passes the curved end 579, the pin 452 is pressed by the spring 474 to the bottom of the key slot 454 so that foot 482 of actuator plate 456 moves back down to right edge 488 to the "on" position shown in FIG. 26.

The shutdown after the last record will then operate normally when the control 29 is moved back to the "on" position, so that the drive will shut down during the record change cycle following the control 29 being moved back to the "on" position as described.

Lifting lever operation

Next, a method of operating a lifting lever 26 for hand lifting and lowering the arm 14 will be described. One distinctive feature of the structure of the invention is the simple design of the control arm 14 of the transfer arm 14, which allows the transfer arm 14 to be lifted upwards rapidly by d when the lift lever 26 is moved to an approximately horizontal position. At the same time, the actuator ensures a relatively gradual lowering of the arm 14 when the lifting lever is on. The lifting lever 26 consists of a flat spring 590 provided with a bifurcated end 592 which is received in a groove 594 - FIG. 23A - in the lifting rod 596 of the lifting lever 26. The lifting rod 596 is received in a vertical opening 598 formed in the protruding portion 88 of the main. housings 76 of subassembly 20 - shoulder straps 14. The lifting rod 596 passes through a free cutout 177 in the positioning plate 124 under which the lifting rod 596 is supported by a washer 597 which is to be mounted on the lifting rod 596 by a coil spring 599 disposed between the washer 597 and the end 601 of the lifting rod 596 In the lower position of the lifting rod 596 shown in Figure 6, the end 601 engages a free opening in the plate 82.

The lifting rod 596 is provided with transverse grooves 600 in which the viscous material is received. The alignment of the lifting rod 596 with the vertical opening 598 is relatively tight, so that the movement of the lifting rod 596 due to the force of the flat spring 590 is damped. The flat spring 590 is disposed below the downwardly directed shoe 602 of the main housing 76 and the horizontal portion 604 of the lift lever 26 is provided with a deflected central section 606 that abuts the underside of the flat spring 590 between the lift rod 596 and the foot 602. The end of the flat spring 590 is secured to the main housing 76 of the subassembly 20 of the arm 14 by any suitable means allowing the bending of the flat spring 59 to be adjusted. Fig. 23 shows an embodiment in which screw 608 is screwed into a downwardly protruding boss 610 on main housing 76. Screw head 603 can be rotated from the underside of the record changer and when screw 608 is tightened, flat spring 590 is bent around shoe 602.

In the alternative embodiment shown in Fig. 24, bolt 612 extends through boss 610 and is connected in any suitable manner to the end of flat spring 590. Bolt 612 is provided with a head 614 that is accessible from the top of the upper housing 76 of subassembly 20 so that adjustment The lifting speed of the lifting lever 26 can be carried out without removing the inverter from the cabinet.

When the lift lever 26 is moved from the lower position of the arm 14 shown in FIGS. 6 and 24 to the upper position of the arm 14 shown in FIG. 23, the deflected center section 606 of the lift lever 26 is pivoted to abut side of the flat spring 590 and exert a force on the lift bar 596 so that the lift bar 596 moves upward and its upper end abuts the underside of the plate portion 94 of the shoulder arm 14 so that the shoulder arm 14 is lifted above the record. The force exerted by the flat spring 590 when lifting the arm 14 is relatively large compared to the force exerted by the flat spring 590 when lowering the arm 14, since when the arm 14 is raised, the middle section 606 of the lifting lever 26 is relatively close With this relatively close abutment, the flat spring 590 is relatively stiff, thereby achieving a relatively rapid lifting of the arm 14 when the lifting rod 596 moves upwards, the washer 597 abuts on the underside of the positioning plate 124 due to compression of the coil spring 599. , so arm ^'1 14 portables, the frictional torque. This frictional moment is large enough to prevent the arm 14 of the cartridge from moving outwards in the direction of the force of the spring 348 when the arm 14 of the cartridge is raised or lowered. In less expensive embodiments of the transducer, the bias spring 348 may be omitted. In this case, the coil spring 599 and the washer 597 may also be omitted. If the spring 348 is not used, the pin 352 and the coil spring 358 may also be omitted. In cheaper inverter models, the viscous material in the transverse grooves 600 may also be omitted. the arm 14 of the portable is lifted, and lowered directly.

This change is easy to carry out in the arrangement according to the invention, since separate lifting rods 72, 596 are used for automatic and manual operation.

When the pickup arm 14 needs to be lowered on the vinyl, the lifting lever 26 is rotated from the pickup arm position 14 shown in Fig. 23 to the lower position of the pickup arm 14 shown in Fig. 24. As soon as the deflected center section 606 leaves the underside of the flat spring 590, a new temporary center of rotation is created for this flat spring 590, which is the cross bar 602. Because this cross foot 602 is away from the lift a rod 596 spaced substantially more than the deflected center section 606 exerts a relatively less force on the lifting rod 596 downwardly against the action of the viscous material in the transverse grooves 600. As a result, the arm 14 is lowered very gently and smoothly to the lower position of the arm 14 on the vinyl or resting rest 22 when the lifting lever 26 is rotated. As already mentioned, the degree of deflection of the flat spring 590, and hence the lowering speed of the arm 14, can be adjusted by means of a screw 608 or a screw 612.

Braking system - turntable

From the foregoing, it should be noted that the converter according to the invention comprises a device for stopping the turntable 12 during the record change cycle, so that the turntable 12 does not rotate when the new record is stored. In addition, braking of the turntable 12 is performed without stopping the drive motor 40 and without raising or lowering the turntable 12. For this purpose, a brake lever 620 is rotatably mounted on the post 622 mounted on the support member 28 of the base plate 10. The brake lever 623 consists of an arm 624 extending inwardly above the brake cam track 626 on the underside of the main cycling wheel 30 and is provided with a pair of downwardly extending protrusions 628, 630 which are arranged on opposite sides of the brake control cam track 626. The second arm 632 of the brake lever 620 is flexible and has a transverse extension 634 to which the brake lining 636 is attached, which may abut the inner side of the turntable ring 12. As the main cycling wheel 30 is rotated during the cycle The brake lever 620 follows the course of the brake cam track 626 on both sides of which the projections 628 and 630 are displaced.

When the main cycling wheel 30 is maintained in the rest position shown in FIG. 1, the brake lever 620 is positioned such that the brake lining 636 does not abut the rim of the turntable 12. However, once the record vibration cycle and the main cycling cycle begin. the wheel 30 begins to rotate, forcing the projections 628, 630 to brake lever 620 to move along the course of the brake cam track 626. Once the projections 628, 630 arrive at the portion 638 of the track 626, the brake lever 620 is rotated. so that the arm 632 is deflected outwardly and the brake pad 636 abuts the rim of the turntable plate

12, with the arm 632 bending slightly to provide a spring force to press the brake pad 636 'against the rim of the turntable 4 12. When the record is placed on the turntable, a portion 640 of the cam track 626 gets between the projections 628 and 630 so that the brake lever 620 is rotated around the pillar 622 and the brake pad 636 moves away from the rim of the turntable 12.

One of the important features of the vinyl record changer according to the invention is that the spring lever 620 is permanently free of any spring bias. This is due to the fact that sufficient elastic forces are achieved by bending the arm -632 when the brake pad 636 abuts the ring of the turntable 12. If the control lever 620 is rotated such that the brake lining 636 does not rest against the rim of the turntable 12, no force is transmitted to the main cycling wheel 30 'by the brake lever' 620 '. When the main cycling wheel 30 approaches the groove 405 of the main guide track 402, the brake lever 620 does not exert any frictional force that would prevent this main cycling wheel 30 from reaching this 'locked position' when the teeth of the main cycling wheel 30 come out engaging the teeth '68 of the hub 38 of the turntable 12 when the groove 60 is reached.

As already described, when stopping the turntable 12 by engaging the brake 'pad' 636 on its rim, the hub 38 'of the turntable 12 is rotated further by the strap 50, the relative rotation of the hub 38' and the turntable 12 enabled by the friction pad. '52 with a low coefficient of friction arranged between the hub 38 and the turntable 12. A certain clearance is formed between the turntable 12 and the hub 38 and its center hole, which allows the turntable 12 to be stopped and the hub 38 to be able to continue to rotate.

Replacement -carriers. gramodesek

As already described, the balancing arm 16 may be of conventional construction and may not be provided with a shut-off device after the last record, as the presence of the last record is detected by the movement of the ejection wing 418, which has already been described in detail. FIGS. 35-37 show a variation of the device for storing record plates of 3-5 mm and 178 mm diameter, the use of which may be advantageous in some cases. 35-37, a post 650 is mounted on a base plate 10 by means of a pair of screws 652 that extend upwardly by a positioning plate 654 disposed beneath the base plate 10 and through an opening 656 in the base plate 10 to the base of the post 650. In the plate '654, the aperture 656 may be configured to pass through the balancing arm 16 so that any vinyl record carrier may be used without requiring substantial changes to the carrier structure.

The column 650 is provided with a pair of arms '658, 660 which diverg at right angles' and are intended to receive a record plate 662 having a diameter of 305 mm. Further, a support member 663 with short parallel arms 664 is mounted on the post 650. The support member 663 is supported rotatably and slidingly on the post 650. More specifically, the support member '663 is attached' to the post 666, which extends through an opening in the upper wall 668 of the post 650 and an aperture in the positioning plate 654 which serves as the lower bearing of the post 666. A position 670 is arranged below the positioning plate 654. the other end is supported by a Seger fuse 672 inserted into the end of the post 666 so that the support member 663 is continuously pulled downward. The post 666 is provided with a tongue 674 that is relatively long and extends through a corresponding groove in the top wall 668 of the post 650 to define the position of the support member 663 shown in Figures 35 and 36. However, when the support member 663 is lifted up enough If the tongue 674 has ejected from the top wall 668, the support member 663 can be pivoted to the position of the vinyl records so that a column of vinyl records 662 with a diameter of 305 mm can be inserted on the arms 658 and 660.

After inserting the vinyl records 662 onto the arms 658, 660, the support member 663 moves to the central position shown in Figures 35 and 36 and is lowered until its stops 676 abut on the upper vinyl record of a column of 305 mm diameter records located on the arms 658 and 660. The stops 676 are disposed between the arms 658 and 660, so that a relatively wide fit with the good effect exerted by the spring 670 is achieved, which allows a releasable placement of a 305 mm diameter record stack on the arms. 658 and 660. It should be noted that during playback of 305 mm vinyl records 662, the arms 664 of the stack do not touch these vinyl records 662.

One of the important features of the vinyl record changer according to the invention is that the centering spindle 653 used in the embodiment of Figs. 35-37 interacts with the arms 658 and 660 without the chamfered top immediately below the stop. Conventional centering spindles operating at the edge gripping are usually provided with an inclined upper portion so that the vial hits the inclined portion of the centering spindle when extending, thereby facilitating the ejection of the lower vial from the carrier. However, these centering spindles are relatively expensive to manufacture.

The centering spindle 653 consists of a straight base body in which a milled groove 665 is formed for receiving the aileron 655. The milled groove 665 and the aileron 655 act as both a reader of the last record and at the same time a member for ejecting the bottom record from the centering spindle 430 653. The lower end 667 of the aileron 655 corresponds to the lower end 416 of the ejector aileron 418 in the embodiment of FIGS. 1 to 34. The lower end 667 moves to the last record record position (similar to position 442 shown in FIG. 33). Also, the lower end 416 is controlled by the ejection slide 370 to eject the record - from the stop 430 on the spindle 653 during the phase of the record replacement cycle. The upper end of the fins 655, however, is provided with an outwardly sloping front edge -skloněnou 659, which upon movement of the wings 655 contact -s Suction quick-release slide 370 to a position beyond the stop edge 430. When sliding -Bottom LPs of the arms 658 and 660 rides down ^one central opening - the bottom record on the inclined leading edge 659 of the aileron 655 and the record is pulled from the ends of the arms 658 and 660. In order to allow this lateral movement of the bottom record immediately after it has been pulled out of the stop 430, the base body 653 has a recess 657 so in the centering body of the spindle 653, a recess is formed against the front edge of the stop 430 to allow the lower gramophone to follow the inclined front edge 659 of the aileron 655. The recess 657 can be milled in the base body of the centering spindle 653. the end of the centering spindle body 653 is assisted pin 661 slidably mounted containment flap 651. The containment flap 651 is provided 'as it bears on all LPs stored.

at the stop 430 except for the last bottom record, so that the records above the bottom record are not ejected together with the bottom record. In the upper end of the aileron 655, a groove or recess 669 formed in the trailing edge of the aileron 655 is further formed so that when the aileron 655 is moved to the ejection position of the vinyl record, the recesses 669 and recesses 657 interact with the centering spindle 653 to allow the side movement of the bottom record when it follows the sloping inclined leading edge 659 of the aileron 655.

The purpose of the inclined leading edge 659 of the aileron 655 is to assist the lower vibration in its movement from the arms 658 and 660. The use of this inclined front edge 659 simultaneously allows for greater tolerances of the placement of the post 650 relative to the centering spindle 653. 659 it would be necessary to precisely position the post 650 relative to the centering spindle 653, which would have to be done in the manufacture of each record changer and would be a very costly operation. On the other hand, the centering spindle 653, which can be produced by simple milling, is considerably simpler than spindles with an inclined upper end, the bending of which must be used.

One of the other important features of the record changer according to the invention is that when requested, it can be played back by the arrangement shown in FIG. 35 to 37 records with a diameter of 178 mm, the support member 663 can be lowered until the second pen 678, i.e. the position shown in FIG. 37, rests on the upper wall 668 of the post 650, i.e. in the position shown in FIG. The 680 arms 664 are positioned at the correct height to accommodate the bottom of the bottom plate of the gramophone column with a diameter of 178 mm with a large central bore when the adapter 682 is mounted on the center spindle 18. The adapter 682 may have the embodiment described in U.S. Pat. -spisu č.

689 080, - to which - the description of this section refers. However, it should be noted that the bottom record of a 178 mm diameter record-with a large-center ίνο214772 ry is mounted on the centering spindle stopper 430 of the centering spindle 653 and the outer edge of the record is resting on the tips of 680 arms 664. For example, when using short spaced arms 664 as spaced apart for a minute, a relatively stable record bearing arrangement is achieved without having to use a support arm abutting a top of a column of 178 mm diameter with a large central opening.

The inclined protrusion protrusion 684 of the adapter 632 is of great importance in detecting the presence of the last vinyl that is performed by moving the centering spindle 653 in the direction of the stopper 430 as described in detail; During this detection phase of the vinyl replacement cycle, the aileron 655 is moved against the inner edge of the lower vinyl stored on the stop 430. If a relatively light vinyl record is deposited on the stop 430, during the scanning phase of the record replacement cycle sufficient to prematurely eject the record. However, the inclined projection 684 of the adapter 682 presents an additional obstacle that can. to be overcome only by force,. which is substantially greater than the force exerted during the recording phase of the record replacement cycle. However, if the lower end 667 of the ejector wing 655 is abutted by the trailing edge of the aperture 414 in the ejector slide 370, as shown in FIGS. 33 and 34, a forced movement of the ejector wing 655 is a 178 mm diameter record. the inclined protrusion protrusion 684 extends. In this context, it should be noted that a column of vinyl records having a diameter of 178 mm with large center holes may be a space on the stop. 430 on the centering spindle 653 is mounted on a stop formed on the adapter 682. An adapter provided with a stop for storing records with large center holes is described, for example, in U.S. Patent 3,191,941.

Modification of the device for finding the last record

38 and 39 show a variation of the device for detecting the presence of the last record. Here, the force for detecting the last record is somewhat greater than the force exerted in the embodiment of Figs. 1 to 34, which force does not cause the lower record to eject during its presence.

38 and 39 show relatively thin wings 418a and 418b mounted on a common pin 420 in the spindle main body 18A. The upper end of the spindle 18A is milled to form an insertion groove 689. the wings 418a, 418b, and at the lower portion of the body of the spindle 18A a circular opening 691 is formed, which is connected to the groove 689. The first pivoted wing 418a operates as a ejection wing extending the lower record bearing mounted on the stop 430 from this stop 430. However, the wings 418a of the wings 418a do not extend below the underside of the extension slide 370a. Aileron 418a is in. 38 of its rearward position shown in FIG. 38 by a flat spring 690 which is disposed between a shoulder 694 formed in the rear edge of the aileron 418a and an opening 692 formed in the lower part of the spindle bodies 18A. The flat spring 690 pushes the ejector wing 418a still rearwardly under the stop 430, but the force of the flat spring 690 can be overcome by contacting the lower end 416a with the ejection slide 370a during the ejection phase of the record replacement cycle as described in detail earlier.

The slide carriage 370a is substantially identical to the slide carriage 370 described in detail earlier. The deviation is that the support surface 412 of the ejection slide 370 is not used in the embodiment of FIGS. 38 and 39. Also, the spring 386 may be somewhat weaker in the embodiment of FIGS. 38 and 39, since pushing the ejector wing 418 into its rear position is The remaining parts of the record changer may be identical to those described in connection with Figures 1 to 34.

The second aileron 418b is also rotatably mounted on the same pin 420 in the center spindle body 18a and acts only to sense the presence of the record vibration at the stop 430 during the initial sensing phase of the record vibration cycle. The wing 416b of the aileron 418b extends below the underside of the ejection slide 370a and into the recess 426 in the side projection '. Thus, the end 416b acts as a locking member of the locking lever 390 in the same way as the lower end 416 of the ejector wing 418 of the embodiment of Figures 1 to 34, which has already been described. This blocking occurs in. during the record replacement cycle, except for the last record release. A second flat spring 696 is disposed between the groove 698 in the spindle body 18a and the shoulder 700 formed in the leading edge of the pickup wing 418b. The groove 698 is in the body. středního. of the spindle 18a formed after the center hole has been formed by inserting the tool through the hole 692 and deforming the wall of the spindle body 18a outwardly, which is a normal operation, which need not be explained in detail. The second flat spring 696 exerts a constant force on the fin 418b, which tends to move the upper end of the fin 418b in the direction of the record stopper 430. However, the force exerted by the second surface of the spring 696 on the wing 418b is somewhat less than the force exerted by the first flat spring 690 on the wing 418a.

Both ailerons 418a, and 418b are provided with 222772 on elongated slots 695 receiving a common pin 420. The slots 695 accommodate a single spring 697 that press pin 420 at rest to the lower ends of these slots 695. This design allows the wings 418a and 418b could be squeezed by the vinyl records above the lower vinyl when the lower vinyl is pulled out of the stop 430, as already described in connection with the embodiments of Figures 1 to 34. The slots 695 are preferably slightly enlarged at the top to allow the aileron movement. 418b relative to the aileron 418 »when the absence of a vinyl record at the stop 430 is detected by the movement of the aileron 418b.

If a record plate is mounted on the recorder, the second flat spring 696 pushes the upper end of the pickup wing 418b toward the edge of the bottom record on the stop 430 at the initial scanning phase of the record change cycle. At the same time, the first flat spring 690 pushes the upper end of ailerons 418a- to the opposite edge of the bottom record. Since the first flat spring 690 'is thicker than the second flat spring 696, the sensing fin 418b cannot extend the lower vinyl from the stop 430 and the wings 418a, 418b remain approximately aligned during the scanning phase of the vinyl replacement cycle. In the absence of a vinyl record on the stopper 430, in the embodiment of FIGS. 38 and 39, a considerable force moving the aileron 418b can be exerted on the sensing fin 418b. At the same time, it is ensured that the force exerted by the wing 418b on the vinyl stored on the stop 430 will not be sufficient to eject this record since a large force exerted by the eject wing 418a acts on the rear edge of the bottom vinyl.

Assuming that as the record replacement cycle continues - after detecting the presence of the last record, a record is placed on the stop 430, the lower end 416a is engaged by the rear edge of the opening 414 in the slide 370a so that the aileron 418a abuts the lower record. When this occurs, the aileron 418b is permanently pushed in the direction of the detent 430 by the second flat spring 696, and thus follows the movement of the ejector wing 418a as the lower plate is ejected from the detent 430.

As soon as the last record is ejected from the stop 430, the sensing wing 418b moves to the eject position of the last record shown in Figure 38 in solid lines, which is provided by the second flat spring 696. The last record is not extended from the stop 430 until the locking pin 396. does not pass deep groove 440 in main guide track 402, so that although the lower end 416b of the aileron 418b is extended from its locked position relative to the lateral projection 422 of the locking lever 390, the converter is not turned off at this last record. in the normal way. However, during the sensing phase of the next record replacement cycle, the locking pin 396 may engage in the deep groove 440 so that the record changer is turned off at the end of this cycle, as described in detail earlier. During this release cycle, the retractable wing 418a moves due to its lower end 416a with the rear edge of the opening 414 in the retractable slide 370a, but this movement has no effect on the shut-off device during the last record, since the lower end 416a of the aileron 418a is shortened and does not interfere with the travel of the locking lever 390.

The embodiment of FIGS. 38 -a-39 is particularly suitable for cases where the record plate column is subjected to little or no clamping force. The two-wing arrangement of FIGS. 33-and 39-is suitable to use, for example, for the arrangement of FIGS. -35-A-36, when -se -play -45 rpm.7 mln. - with - a small 'center' hole, as is - usual in Europe. An adapter does not need to be used to play these small-hole-size discs, and the column of the records is located on the spindle stop 430a and the spikes 680 of the arms 664. It should be noted that the arms 664 should be longer than half the diameter a large centering hole if -parts are to be played at 45 rpm. with a small central hole, which requires no further explanation.

If a single vinyl record 45 rpm is provided on the arms 664, which is - relatively light, in the case of the embodiment according to FIGS. 1 - 34 - with a single arm, a relatively small sensing force must be used to - . ensure that - the record is not removed from the - - stop 430 - during scanning. In the case of the two-wing arrangement of FIGS. 38 and 39, however, the ejector wing 418a retains the light record on the stop 430, even though the sensing wing presses on the opposite edge of the record with a considerable sensing force. Since the adapter is not used in this embodiment, the two-wing design of Figs. 38- and 39 is particularly suitable, since the eject shoulder 418a retains the function of the inclined overhang protrusion 884 of the adapter described in connection with Figs. It should be noted, however, that the two-wing arrangement of Figures 38 and 39 may be used in any device where little or no gripping force is applied to the record column, whether in the spindle region or at the edge of the record column.

The port 20 of the transfer arm 14 is provided with a low-frequency output 704 (FIGS. 4 and 22) consisting of two electrical sockets 706 and 708. The low-frequency output 704 is further comprised of a flat panel of insulating material which it is accommodated in a groove 710 of the main housing of the subassembly 20 of the cartridge arm 14. The other side of the low-frequency output 704 is disposed in a groove in the plate 82. With this arrangement, the turntable-stored in the front end of the arm 14 can be electrically coupled to the jacks 706 and 708 and the entire sub-arm 20 of the arm 14 can be assembled and electrically - tested - before being mounted to the base plate 10. Attaching the fully assembled and tested subassemblies 20 to the base plate 10 is suitably accomplished using holes 776, 778, 780. (FIG. 22A) in the base plate 10. The lifting rod 72 is first inserted into the opening 776 and the main housing 76. is provided with - side feet 782, 784 which fit into corresponding edge portions 786, 788 of the bore 776. - the leading edge of the main housing 76 rests on the upper side of the base plate 10 and the subassembly 20 is k the base plate 10 fixed by means of screws which are inserted into the holes -790 in the base plate 10 and into the main housing. 76. Coupling - member. 120 is then connected to the positioning plate 124 by simply inserting an end; 126 into the housing -128 as shown in Fig. 11. .

. - On. - Fig. 40 '- -a.' 41 a variation of the drive train is shown; The arms 14 and 14 of the transmission and of the shut-off device, which can be. may be used in place of the corresponding devices described in connection with the embodiment of FIG. The connecting member 120a - - is v.-. tomto- .obměněném- - make connections - - - for positioning - -desc - 124 ^-: Arm 14 - - Portable - - 'heads using' 132 - bushing 128, which is disposed - - within the cutout -podlouhlém- 'forming the joint. 130 with clearance in the positioning 'plate' - 124 - - - arms 14 - cartridges, - as '- already -' has been - described - in detail - before: - -V- - embodiment - according to - -fig. - '40 'to '41' is - however. - to - connect the coupling member - 120a to the - - main '-' - cycling 'wheel' - 30a - a modified - '- clutch - - device is used. The end of the connecting member 120a is formed in the form of a hairpin, which forms a relatively wide gap 720 and a somewhat narrower gap 722, end 724 of the connecting member. The member 120a is attached to the body of the coupling member 120a in a suitable manner, for example by welding or brazing. The pin 726 can be rotatably supported in the main cycling wheel 30a and can be secured thereon. The arcuate end 730 of the coupling 120a slides along the upper side of the annular wall 732 formed on the main cycling wheel 30a and extends upwardly from its upper side.

The pin 726 is provided with an extended head 734 which is disposed over and retains the arc end 730 of the link member 120a, while allowing longitudinal and pivotal movement of the link member 120a relative to the main cycling wheel 30a. Sufficient clearance is maintained between the extended head 734 and the coupling 120a in the vertical direction, so that if the main cycling wheel 30a is in the latched position shown in FIG. 40, the coupling 120a is not coupled to the main cycling wheel 30a and the end 730 may move forward toward the foot 66 if the arm 14 is moved during the playback cycle. moves around. Record - inward direction. When the arcuate end 730 hits the shoe 66, the coupling 120a shifts the switching device 62 to the start position of the record replacement cycle, as described above with respect to the description of the embodiment of FIG. 1 and 34. In a variation of the embodiment, the pin 726 may be rigidly connected. other suitable means may be used to secure the link member 120a to the pin 726-through the main cycling wheel 30a.

The diameter of the pin 726 is 'substantially' smaller than the width m-e-zer '720' in the coupling member 120. During the first. phase 'exchange cycle. gramodesky ,. . - when - arm - 14 - pickups. - is' from vinyl. - lifted. ' therefore. the coupling member 120a is not connected to the main cycling around 30a. However, when the pin 726 comes to a narrower gap 722 in the connecting. - - - - - - - - - pin - wedge '726 - into this - - gap 722 - as a result of which - the main cycling wheel is' joined'. -30a '. with the positioning plate 124 of the cartridge 14, the cartridge 14 of the cartridge is inclined outwards. When the pickup arm 14 reaches dor and 184, the rest rest 22 cannot move further and the pin 726 while the main bar is rotated further. the cycling wheel -30a slides in the gap 722 in the coupling-120a. During the remaining half of the vinyl replacement cycle, the pin 726 is displaced in the opposite direction, causing movement of the positioner plate 124 of the cartridge 14 inwardly until the projection. 192 - - does not hit the shoe - - - 194 blocking 'member' 196. - 'As soon as this occurs, it moves. - the pin 726 '- is again in the' gap '722, while the' arm '14' 'of the portable' - remains - in a position from which - it can - be lowered - on a record plate with a diameter of - 305 - mm. This process continues until the pin 726 reaches a wider gap 720 in the link member 120a, as a result of which the link member 120a disengages when the main cycling wheel 30a is moved to the starting or locked position from the main cycling wheel 30a. It should be noted that in the embodiments of-FIG. 4-0 to 41, the coupling of the main cycling wheel 30a to the coupling 120a is performed without moving the pin 726 in the vertical direction.

Referring to FIGS. 42 and 43, variations of the drive arm of the portable arm 14 and of the speed cut-off device are shown. The coupler 120b is provided with a single slot 740, the arcuate end 742 of the coupler 120b being used as a velocity deflection member that abuts the shoe 66 of the switching device 62 initiating the vibration change cycle when the main cycling is. 42. In the embodiment of FIG. 42, the pin 744 is provided with the head 746 of the link member 120b and retains it on the upper surface of the annular wall 732. However, the pin 744 is suitably attached to the main cycling cycle. so that when the main cycling wheel 30 is rotated, its cross-section relative to the slot 740 changes. When this dimension increases in the transverse direction, the pin 744 is wedged into the slot 740 and a drive connection is formed between the main cycling around 30 and the coupling 120b so that the arm 14 is tilted outwards. However, as soon as the cartridge arm 14 hits the stop 184 on the rest abutment 22, the pin 744 slides in the slot 740 so that the necessary slip occurs as the main cycling wheel 30 continues to rotate. When the main cycling wheel 30 is in the locked position, the pin 744 in the coupling member 120b is completely free so that the coupling member 120b can be used as an actuator of the speed switch, as already described in detail with respect to the embodiments of Figures 1 to 34. In the embodiment of FIG. 42, the pin 744 has a D-shaped profile. In the embodiment of FIG. 43, the pin 744 has a diamond-shaped profile. In both of these embodiments, the varying transverse dimension of the pin 744 relative to the slot 740 is utilized, which, while rotating the main cycling wheel 30, provides the necessary wedging and coupling of the main cycling wheel 30 to the link member 120b.

44 to 46 show a variation of the drive arm drive 14 and the speed cut-off device. A coupling member 120c is used to connect the main cycling wheel 30c to the positioning plate 124 of the cartridge arm 14. In the embodiment of FIGS. 44 to 46, the elongate cutout forming a clearance joint 130 in the positioning plate 124 is omitted and the coupling 120c is rotatably connected to the positioning plate 124 directly by means of the housing 128, with no clearance between these members. The drive pin 750 is rotatably mounted in a bore 752 formed in the main cycling of the wheel 30c and is provided with a transverse slot 754 through which the end of the link member 120c extends. The main cycling wheel 30c is provided with an upwardly extending annular wall 756 surrounding the aperture 752, and the coupling 120c slides on top of the annular wall 756. The drive pin 750 is provided with resilient arms 758, 760 which terminate in feet 762, 764 abutting in recess 766. the underside of the main cycling wheel 30c.

When the main cycling wheel 30c is in the initial or locked position shown in FIG. 44, the position of the drive pin 750 is such that its rounded underside 768 abuts the upwardly facing cam 770 formed on the support member 26 of the base plate 10, as shown in FIG. 45. In this position of the main cycling wheel 30c, the drive pin 750 is pushed upwardly in the bore 752 so that the coupling 120c slides freely in the transverse slot 754 formed in the drive pin 750. During the playback cycle, the coupler 120c is freely movable in the transverse slot 754 as the transfer arm 14 moves inwardly in the transverse slot 754. In this context, it should be noted that the transverse slot 754 in the drive pin 750 is wide enough to allow a small lateral movement of the coupling 120c as the arm 14 is moved.

In the embodiment shown in FIGS. 44 to 46, the deflector arm 14 does not include a velocity deflection coupling between the coupling 120c and the positioning plate 124. Thus, this arrangement responds to the position of the arm 14 instead of changing the velocity when the arm 14 enters the runway on vinyl. The length of the coupling 120c is therefore selected such that the end of the coupling 120c abuts the shoe 66 and moves the switching device 62 into the projection path 70, thereby initiating a record change cycle when the transfer arm 14 reaches the runway groove on the record bearing stored on the turntable 12. In a modified embodiment, a photoelectric sensing and tripping device may be used that can respond to the movement of the coupling 120c to a certain point during playback, which does not need any further explanation. It should also be noted that in the arrangement of Figs. 44 to 46, a velocity cut-off clutch consisting of members 128, 130 and 134 can be used if desired, so that the cut-off described in detail in connection with the embodiment of Fig. 1 is achieved. 34.

The operation of the sliding clutch between the main cycling wheel 30c and the coupling member 120c in the embodiment of Figs. 44 to 46. After the main cycling wheel 30c has been rotated so that the transfer arm 14 is raised, the drive pin 750 moves away from the cam 770 on the support member. In this position, the resilient arms 758, 760 push the drive pin 750 in the opening 752 downwardly so that the link member 120c is clamped between the upper wall of the transverse slot 754 and the upper surface of the circular wall 756. With continued rotation In the main cycling wheel 30c, the portable arm 14 is tilted outwardly until it rests on a protruding stop 184 on the rest support 22 of the portable arm 14. As the arm 14 of the cartridge abuts against the stop 184, the coupling 120c slides against the cam 770, as described in detail in connection with the embodiments of FIGS. 1 to 34.

If desired, the coupling may be

120c is disconnected from the main cycling wheel 30c during the middle portion of the vinyl replacement cycle, so that the transfer arm 14 may remain in a deflected position near the rest abutment 22 as long as possible until it is deflected towards 214777 inward to the 305mm diameter edge of the vinyl. In particular, a rounded projection 772 may be provided on the support member 28 in the path of the drive pin 750. When the main cycling wheel 30c is rotated slightly less than 180 °, the rounded underside 768 of the drive pin 750 is pushed upward to a position similar to that of FIG. 45, in which the coupling 120c is no longer clamped between the upper side of the transverse slot 754 and the upper surface of the annular wall 756. Once the main cycling wheel 30c has been rotated enough to move the drive pin 750 away from the rounded projection 772, the drive pin 750 assumes a position similar to that shown in FIG. 46 and inclines the shoulder 14 of the cartridge inwardly until the protrusion 192 abuts the shoe 194 on the vial size selection lock member 196. Thus, the cartridge arm 14 is stopped at a position corresponding to a 305 mm gramophone, and the link member 120c slides as the main cycling wheel 30c continues to rotate relative to the drive pin 750. Once the initial or locked position of the main cycling wheel 30c has been reached, the drive pin 750 abuts the surface 774 of the cam 770 so that the drive pin 750 is pushed upward to the position shown in Figure 45 when the coupling 120c is away from the main cycling wheel. 30c is disconnected and may be used as a speed trip member during the playback cycle.

Fig. 47 shows a variation of a vinyl record changer according to the invention in which the hub 38 of the turntable 12 is driven by an idler instead of a belt drive described in connection with the embodiment of Figs. 1 to 34. The idler 794 shown in Figs. 47, is rotatably supported on arm 796, which itself is also rotatably mounted on pin 798 at the end of U-shaped member 800. The member 800 is rotatably mounted on a post 802 which is mounted on base 10a and extends through groove 804. in a multi-position adjusting member 806 which is displaceably disposed on the base plate 10a. A control wire 302a, similar to the control wire 302 of the embodiment of FIGS. 1 to 34, is attached to one end of the adjusting member 806. The idler wheel configuration 794 is similar to the idler gear described in FIG. U.S. Patent 3,490,772, the disclosure of which is incorporated herein by reference. For the purpose of the device according to the invention, it should be pointed out that as the control wire 302a moves to positions corresponding to different speeds 1, the member 800 is moved up and down as a result of contact of the adjusting screw 808 with the stepped surface of the adjusting member 806. As a result, the idler 794 engages the various stages of the stepped roller 810 mounted on. The intermediate wheel 794 is pressed by the spring 812 between the outer edge of the hub 38 of the turntable 12 and the step roller 810. The spring 812 connects the arm 796 to the base plate 10a. The other parts of the auto record changer shown in Fig. 47 are identical to that of the changer described in detail in connection with Figs. 1 to 34.

Thus, the turntable 12 can be stopped by the brake lever 620 during the vibration change cycle, the idler 794 driving the hub 38 further and the slip between the turntable 12 and the hub 38 and the turntable 12 is allowed by the washer 52. It should be noted The hub drive 38 of Figs. 1 to 34 for the hub drive 38 of the wheel 794 of Fig. 47 is very simple and can be designed economically in such a way that there is no change in the automatic record changing device. This is made possible by the fact that the hub 38 is driven on its outer periphery. In conventional record changers, the intermediate wheel driving the turntable rests on the inside of the rim of the turntable.

Fig. 48 shows a variation of the vinyl record changer according to the invention in which a separate deflector arm 14 and a separate shut-off device are used. The guide 122 shown in Fig. 48 and mounted on the main cycling wheel 30 is used to connect the coupling 120d to the positioning plate 124d of the cartridge arm 14, which serves to deflect the cartridge arm 14 in the horizontal direction. However, a separate shut-off device is used to initiate the record replacement cycle. In the embodiment of FIG. 48, a positioning plate 124d is provided with a rectangular opening 820 in which a downwardly bent end of the coupling 120d is received. The correct contact of the coupling member 120d having a rectangular opening 820 is secured by bracket 822 which extends downwardly from the top wall 76 of the main housing ¹ in which is formed an opening 824, which accommodates a central portion of the coupling member 120d.

In the embodiment of FIG. 48, the link member 120d is used only to tilt the arm of the cartridge 14, and another rate shut-off device is used to initiate the record replacement cycle. For example, a velocity cut-off device as described in U.S. Patent Application No. 432,089 can be used. In this case, a velocity cut-off arm similar to the arm 338 in the present application is used that is rotatably mounted on the pivot arm 14 of the portable to which it is coupled. Said arm is designed to abut the foot 560 of the switching device 62 of the embodiment of Figures 1 to 34 of this application. Otherwise, the embodiment of FIG. 48 may be identical to that of FIGS. 1 to 34, which has already been described in detail.

When the main cycling wheel 30 of the embodiment of FIG. 48 is rotated to the position shown in FIG. 14, the head guide 122 connects the 14-7-7-2 2- cycling wheel 30-. se '. coupling member 120d. As soon as the coupling member 120d begins to move outwardly from the position shown in solid lines in FIG. 48, the positioning plate 124d does not move as far as possible. the end of the coupling 120d does not abut the trailing edge 826 of the rectangular hole 820 in the positioning plate 124d. Once this occurs, it moves the linker. member 120d by the &quot; positioning &quot; plate 124d and the arm 14 of the cartridge outwardly to the position shown in dashed line in Fig. 48 when the arm 14 of the cartridge abuts the stop 184 of the resting support 22. and guide 122 slides further outward as the coupling member 120d moves outward as described in detail. During the reciprocating movement of the coupling 120d, the positioning plate 124d does not 'move' until the end of the coupling 120d contacts the leading edge 828 of the rectangular hole 820, whereupon the positioning plate 124d moves inwardly until the projection 192 contacts the locking member. 196 in the position corresponding to a record with a diameter of 305 mimes and a guide 122 at another. turning the main cycling wheel 30 back to its locked position does not start to slide again as. has already been described in detail in connection with. 13 to 19. During the playback cycle, the positioning. board. 124d moves inwardly, corresponding to the movement of the arm 14 along the. Record inwards. During this movement it is. positioning plate. 124d - from the coupling member 120d - completely. the arm 14 is not loaded by the positioning plate 124d. Rectangular hole 820 - in positioning. For example, during the entire playback cycle, the plate 124d creates the necessary play between the positioning plate 124d and the coupling 120d.

Fig. 49 shows a variation of an embodiment of a vinyl record changer according to the invention in which there is a switching device 62 and a conduit. 122 of the embodiment of FIG. 1 to 34, a two-speed velocity tripping device is used. The coupling 120f shown in Fig. 49 is coupled to the main cycling wheel 30 via a guide 122, which has already been described in detail. In the embodiment of Fig. 49, however, the end of the coupling '120f' to the positioning plate 124 is 'rotatably engaged' and the joint '130' is omitted; So between the coupler. 120f. 'and the positioning plate' 124 'there is no play. On the main 'cycling' wheel 30 there is provided a two-plate speed shut-off device consisting of a lower plate -852- and an upper plate 62a. The upper plate 62a is provided. a pin 61a, which passes through an aperture 'in the lower plate 852 into an aperture in the main cycling' wheel 30 so that the members 62a and 852 are both rotatably mounted on the pin 61a. The bottom plate '852' is 'provided'. twinning. stops' 850, - -856, - which define the movement of the bottom plate. 852 relative to the top plate 62a. The lower plate 852 has a foot 854 on it. by which the end of the coupling 120f abuts. An upper plate '. 62a - - is provided. . a downwardly directed shoe 560 which 'extends' through the aperture 562 in the main cycling wheel 30 is provided with a shoulder 68a which may abut. to the protrusion .. 70.

Just before the end of the playback cycle. do-, sit down. the end of the coupling. 120f onto the shoe '854 - and pushes the two plates 62a, 852 towards the centering spindle. Boss 70 - however. touches the top. the plate 62a behind the shoulder 68a - and moves the top plate. 62a - somewhat backward, wherein the upper plate 62a relative to the lower one. plate 852 slides. As soon as the runway groove is reached, it moves. connecting member. 120fo. both members towards the spindle. the projection 70 abuts. on . 'casting. . 68a - - to ί. top plate. 62a and moves the main cycling wheel 30 so that a record replacement cycle is initiated. During a record replacement cycle. are boards. - 62a. 852 - - on. to the desired positions by contact. with teeth '58' on the hub. 38 swivel. plates 12 .:

The lower plate 852 is provided with a projection 858 which is first engaged by the teeth 58 so that the stop 856 abuts the side of the upper plate 62a. Then, the plates 62a, 852 are moved 'together' to the position in which they. with shoulder 68a. It is evident that in the embodiment of FIG. 49. is the will. between the coupling member 120f 'and the top. plate 62a, while in the embodiment. According to Figs. 1 to 34, the clearance is formed by a cutout at the opposite end of the coupling member 120. The embodiment of Fig. 49 is otherwise identical. . 1 to 1. 34.

Claims (25)

1. Automatic record changer,. which consists of a main cycling wheel, a drive member. to rotate this main. during the change of the vinyl record. . one. rotation, arms. a carrier mounted rotatably to the side of the cycling wheel and the elongate coupling member. . connected by one. an end with a cantilever arm away from the pivotal mounting of the cantilever, characterized in that it is in the main cycling wheel (30). is out _; . his. .the center. .ordered. pin (152),. in the invention in which the opening through which it passes is formed. connecting member. (120), the main. a cycling wheel (30). is further. a cam (148, 150) is provided for maintaining the coupling. member (120) by means of a pin (152) engaged with the main cycling. around ·. (30). 2. Automatic record changer according to. Item 1, characterized in that:. cam. (148, 150) is formed. a pair of protruding arms arranged on the. main cycling wheel (30). opposite sides of the pin (152). An automatic record changer according to claim 2, characterized in that a pair of radially extending feet (164, 166) is arranged on the pin (152) and the coupling (120) is wedged between the pin (152) and the projecting cam arms (148). , 150). 4. An automatic vinyl record changer according to claim 3, characterized in that the feet (164, 166) are flexible and abut against the main cycling shaft (30). An automatic vinyl record changer according to claim 2, characterized in that the connecting member (120) passes through an aperture (154) in the pin (152) whose dimension in the vertical direction exceeds the transverse dimension of the connecting member (120), ) is formed by a pair of projections (163, 170) perpendicular to the annular wall (144) formed on the main cycling wheel (30) 6. The automatic record changer of claim 1, wherein the main cycling wheel (30) is rotatably supported on the support member (28) and the pin (152) is rotatably mounted in a vertical bore formed in the main cycling wheel (30). and engaged with the cams (770) disposed on the support member (28) in the path of the pin (152). 7. An automatic gramode-sec converter according to claim 6, characterized in that the pin (152) has a rounded underside (768) which bears against the cam (770). The automatic record changer according to claim 1, characterized in that a displacement member (196) of the centreline movement of the portable arm (14) is disposed in the path of the shoulder (14). The automatic record changer of claim 1, wherein the coupling (120) is coupled to a record changer (62) for replaying and replacing a record record. The automatic record changer according to claim 1, characterized in that a slot (740) is formed in the connecting member (120) into which a pin (744) arranged on the main cycling wheel (30) extends away from its center. (744) has a cross section through which it is wedged in the slot (740). 11. An automatic record changer according to claim 10, characterized in that the pin (744) has a semicircular cross section. • j The automatic record changer of claim 10, wherein the pin (726) has a circular cross section and a taper (722) is formed in the slot (740) in which the pin (726) is wedged. The automatic record changer of claim 12, wherein the pin (726) is slidable in the taper (722). An automatic record changer according to claim 1, characterized in that a rest abutment (22) is provided in the path of the shoulder (14), on which a stop (184) for the shoulder (14) is formed. An automatic record changer according to claim 14, characterized in that the stop (184) is part of the rest support (22). The automatic record changer according to claim 9, characterized in that the switching device (62) is arranged on the main cycling wheel (30). An automatic record changer according to claim 16, characterized in that a play (130) with a clearance is formed between the switching device (62) and the transfer arm (14). An automatic record changer according to claim 16, characterized in that a guide (122) for the coupling (120) is provided on the main cycling wheel (30). An automatic vinyl record changer according to claim 17, characterized in that the clearance joint (130) is formed between the coupling member (120) and the transfer arm (14). An automatic vinyl record changer according to claim 19, characterized in that the transfer arm (14) is connected to a positioning plate (124) in which a cut-out forming a clearance joint (130) is formed into which one end (126) extends. a coupling member (120) between which a spring (134) is disposed and a positioning plate (124). The automatic record changer of claim 20, wherein the end (126) of the coupling (120) is displaceably disposed in the cutout forming the clearance (130). An automatic record changer according to claim 21, characterized in that the opposite end of the coupling (120) engages the switching device (62). An automatic vinyl record changer according to claim 10, characterized in that the connecting member (120) is formed of a wire and the slit (740) is formed by an eye on the wire. 24. An automatic vinyl record changer according to items 12 and 23, characterized in that the constriction (722) is formed in the wire eye. The automatic record changer of claim 23, wherein the wire of the coupling member (120) is rigid.