DE3004722A1 - DEVICE FOR SECURING A RECORD ON A PLATE - Google Patents

Description

DR.-ING. WALTER ABITZ DR. DIETER F. MORF DIPL.-PHYS. M. GRITSCHNEDER Patent attorneys

Munich ß. February 1980

Postal address Poet subject 8ΘΟ1ΟΘ. 8OOO Munich 8Θ

J Lj U H

PienzenaueretraOe 28

Telephone ΘΘ32 22

Telegrams: Chemlndus Munich

Telex: (O) G 23992

722

4702-7

BRIAN DAVID THURSTON Vancouver, British Columbia, Canada

Device for securing a record on a turntable.

030034/0693

47O2-7

300472

The invention relates to a device for securing a record on a turntable of a record player when playing.

For ideal playback it is essential that a record is on the turntable of a turntable is played, does not rotate independently of the turntable, for example by slipping. It is especially important in modern high quality equipment because of the high quality of the playback makes such hatching recognizable. The invention is based on the object of developing a device which clamps a record onto a platter, easily attached to the platter and from this can be taken away.

The invention is therefore primarily to a device for fastening a record with a central opening, a central area surrounding this opening and a sound groove area on a turntable Turntable directed, the device according to the invention by a releasable fastening member in their center to align with the center opening in a record and for attachment to the turntable, further by pressure exerting elements, which extend from the Fastening member extend outwards in order to exert a pressure on the mentioned central area around the record to keep it safely in contact with the turntable while playing.

It is preferable since most turntables come with a

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central spindle are provided that the detachable fastening member is a clamp for the temporary detection of the Outside of the spindle.

An embodiment of the device according to the invention has a central hub from which arms extend outwardly, a leg at the end of each arm, the extends downwards when the device is in its operative position in contact with the central region of the Record is a slotted tube that extends downward from the hub when the device is in its Is in the operating position, and sits on an upwardly directed spindle on the turntable, and one Collar on the outside of the slotted tube to compress it on the spindle when the collar is on the tube is moved downward away from the hub.

In a further embodiment, the invention has Device a central hub with a central opening which, when the device is in its operating position, with the central opening of the record is aligned. Arms extend outwardly from the hub and a leg extends at the end of each arm down, when the device is in its operative position, in contact with the central area of the Record, one screwable link with a head piece to rest on top of the central hub, and one Threaded shaft sized to pass through the central opening in the hub for engagement with threads on a rotatable spindle passes through the record clamp down when playing.

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The shaft is provided with an internal thread in which

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If the spindle is designed with a corresponding external thread, or the shaft can have an external thread and the spindle has a corresponding internal thread.

In these embodiments described above, the preferred arrangement has been to use three equally spaced arms and legs with flexible feet at the end of each leg to be placed on the Result in the middle area of the record.

In a further embodiment, the invention has Device a circular body with a radius about equal to or less than the central area The vinyl record is a spindle that is down into frictional engagement with a central opening in the vinyl record extends, and a central opening in the turntable for clamping a record on the turntable when playing.

In another embodiment, the invention has Device a circular body with a radius approximately equal to or less than that of the central region The vinyl record is a central opening that opens over an upward-facing spindle on a turntable fits, a circumferential groove in the spindle, a corresponding circumferential groove in the interior of the central opening and an associated engagement element for engagement with both grooves to keep the circular body in place secure on the spindle. The engagement element can be a ' be elastic snap ring.

In a structural feature of the invention, which can be a permanent part of the turntable, has the

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Device a hollow turntable spindle with links, which are in their rest position within the spindle, openings in the spindle, one for each each link, a closed slot in each link, a pin for each link, each of which goes through a slot extending in a member within the spindle, each pin extending adjacent an opening is located, a reciprocating member in the spindle for abutment at the inner ends of each link so that an upward movement "of the reciprocating organ the lower ends of the links, guided by the pins extending into the slots, pushed upward and the top ends down to rest on the central area.

As a further structural feature, the record holding device according to the invention has for arrangement between a record and a turntable of a turntable have a central opening for alignment with the central opening in the record and the turntable spindle, a first side of the device being shaped to conform to the surface of the turntable a second side of the device is shaped to conform to a surface of a record and a layer of adhesive on each side of the device for temporarily adhering the device to it the platter, and the platter to secure the platter on the platter when playing.

It is desirable to have a protective layer for the adhesive when the device is not in use is. The device can be left attached to the turntable, in which case the protective layer can be applied to the top of the device to protect the top adhesive until a new one

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Record must be placed on it.

The invention is explained in more detail below, for example in conjunction with the accompanying drawings namely show:

Fig. 1 is a plan view of an embodiment of the invention;

Fig. 2 is a side view of the embodiment of Fig. 1;

Fig. 3 shows the main body of another embodiment the invention;

Figures 3a and 3b show organs for holding the body of Figure 3 on a record;

Figures 4 to 6 'show an embodiment of the invention;

7 shows a further embodiment;

Fig. 8 also shows a further embodiment and

9 also shows an embodiment of the invention.

The embodiment of the invention shown in Figs has a central hub 2 with arms 4 which extend from the hub 2 to the outside. At the end of each arm 4 there is a leg 6 which extends downwards when the device is in its operating position on a record 8, in particular as shown in FIG. A slotted tube 10 extends downward from the hub 2. This tube 10 sits on one

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Spindle 12 protruding upward from a turntable 14, which tube serves to hold the record 8 in their position on the turntable 14 to be clamped. A collar 16 on the outside of the slotted tube 10 presses the latter on the spindle 12 together when the collar 16 on the tube 10 moves away from the hub 2 downwards will. The collar 16 is in Fig. 2 with full lines in the rest position, i.e. with the open Tube 10, and shown with dashed lines in the blocking position, in which the tube 10 for detecting the spindle 12 is closed. The slotted tube 10 tends, if it is not prevented by the collar 16, to open outwards and downwards, i.e. when the collar is in the one in Fig. 2 with full lines position shown. Projections 18 are provided on the collar 16 in order to facilitate grasping with the fingers.

At the end of each leg 6 flexible feet 20 are provided for contact with the central area of the record.

When using the embodiment of FIGS. 1 and the record 8 is placed on the turntable 14 and the device according to FIGS. 1 and 2 then via the The spindle 12 is pushed, which protrudes through the central opening of the record 8. The federal government 16 is located is in the retracted position shown in solid lines in FIG. 2. After putting on of the device, the collar 16 is down to the position shown in FIG. 2 with dashed lines moved until the slotted tube 10 engages the spindle 12 to the record 8 firmly against the turntable "14 to tighten.

In Fig. 3 are for parts already shown in Figs

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similar reference numerals are used. The embodiment 3 has a central hub 24 with a central opening 26, which / when the device is in the operating position, as shown for example in Fig. 3, in alignment with the central opening 22 of the record 8 is located. As in the embodiments of FIGS. 1 and 2, arms 4 extend from the Hub 24 outwards and there is a leg 6 at the end of each arm 4, which is for contact with the central area the record 8 extends downward. Figures 3a and 3b show screwable members 28, each of which a head part 30 for resting on the top of the central hub 24 and a threaded shaft 32. The threaded shaft 32 is sized so that it through the central opening 26 in the hub 24 for engagement with a Thread 34 on a turntable spindle 36 passes to clamp the record 8 when playing. In 3a, the shaft 32 has an internal thread and the spindle 36 has a corresponding external thread 34. In FIG. 3b it has the shaft 32 has an external thread and the spindle has a corresponding internal thread 35.

The embodiments of Fig. 3 are performed in a similar manner as used in the embodiment of FIGS. the The device is arranged on the record 8 so that the feet 20 sit on the central area. The central one Opening 26 in central hub 24 is in alignment with spindle 36. The screwable link 28 is then inserted through the central opening 26 and screwed onto the spindle 36 to place the device in its To secure position and of course to clamp the plate 8 in its position when playing. Turntables can then be used in the conventional manner.

The embodiments according to Fig. 1-3 can be made of polycarbonate

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bonat.

In the embodiment according to FIGS. 4-6, an essential one Changes to the existing turntable spindle are planned. 4-6 show a hollow turntable spindle 38 with members 40 which are located inside the spindle 38 in the rest position shown in FIG. 4. In the Spindle 38 have openings 42, one for each link 40, and each link 40 has a closed one Slot 44 which terminates shortly before each end of the link 40 in which it is formed. For each link 40 a pin 46 is provided which, as shown in FIG. 6, extends through the slot 44 in a member 40. Each pin 46 is located within the spindle 38 and adjacent an opening 42. There is also a back and forth A movable member in the form of a slide 48 is provided to bear against the inner ends 50 of each link 40. As 4 and 5, when the slider 48 is moved upward, the inner ends become 50 of the links 40, guided by the pins 46 in engagement with the slots 44, moved upward, and the upper ends 52 become the position shown in Fig. 5 for resting on the central region of the record 8 moved downwards. Returning the device to its rest position, i.e. from that shown in FIG Position to the position shown in Fig. 4 can be done in a simple manner that the record 8 is raised. The inner ends 50 of the links 40 press down on the slide 48 to move it into the position shown in FIG to move back the rest position shown.

The slide 48 can be moved upwards by hand or a simple mechanical linkage (not shown) on the side of the turntable

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move the slide 48 upward.

Fig. 7 shows an embodiment of the invention with a circular body 54, the radius of which is approximately the same that of the middle area of the record 8 is or slightly smaller. A spindle 56 extends from the body close down for frictional engagement with the central opening in the record 8 and a central opening 58 in the Turntable 14 to clamp the record 8 against the turntable 14 during playback.

The embodiment of FIG. 8 is similar, but is the spindle 60 directed upward from the turntable is formed with a circumferential groove 62. In body 54 is a central opening 64 is provided which fits around the upwardly directed spindle 60.

An inner groove 66 is formed in the central opening 64 and a snap ring 68 is in the groove 66 of the central opening 64 arranged. The snap ring 68 engages the circumferential groove 62 in the spindle 60 about the body 54 secure in its position on the record 8. Of course, means other than a snap ring 68 can be used and, of course, the snap ring 68 can also be arranged so that it is normally within the groove 62 of the upwardly directed spindle 60 remains.

Fig. 9 shows a record holding device which is shown in ' can be produced in a simple manner, but is extremely effective for holding a record 8. the Holding device has a disc 70 for arrangement between the record 8 and the turntable 14 of a Turntable. The turntable carries a spindle 12. In the disk 70 is a central opening 72 for escaping

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device rait the central opening 22 in the record 8 and provided with the turntable spindle 12. A first side of the device, the bottom in Fig. 9, is the Pattern on the top of the turntable 14 adapted. The top of the device is to adapt to the Top of the record 8 shaped. On each side of the device is a layer of adhesive for temporary use Adhesion to the turntable 14 and the record 8 is provided, the latter on the turntable 14 to secure. It is desirable to provide a protective cover for the adhesive when the device is not is in use. In particular, when trading the device, there should be a protective cover for each side be provided, but once the device is mounted on a turntable, it can be on this be left. In this case, only the top protective cover is attached when no record is playing will.

The invention therefore provides a number of devices for making a record with a central opening, a central area surrounding this opening and a sound groove area on a turntable and To secure turntable, with a releasable fastening member in the middle of the device itself with a central opening in alignment with the record and attaches to the platter, usually the Spindle, serves. Pressure-exerting elements extend outwardly from the clamping device in order to apply pressure Exercise the central area so that the record is held securely in contact with the turntable during playback will.

The device according to the invention makes playing

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of vinyl records, especially high quality turntables. The device supports centering a record with a worn spindle opening. Once the record is right has been centered, it is by the invention Device held in place regardless of the worn spindle opening. The device is also of value in reducing warping of a record, at least when playing, so that it can be made playable on most turntables. A particular advantage is that the inventive Device prevents slipping of the record on the turntable.

The positive clamping of the record on the turntable is suppressed by a device according to the invention Vibrations that can be caused by the stylus as well as by sound waves the loudspeaker of the turntable. The rumbling noise in the sound produced is due to the small increase in the mass of the record and by clamping the record on the turntable. The training is but of such a light weight that its weight does not affect or affect the turntable balance Suspension acts in any detrimental way.

The rubber feet touch the middle of the record, usually in the area where the record label is is located. The device therefore does not damage the record or the stuck-on name label. The rubber feet also contribute to vibrations to absorb.

As for the embodiment of FIG. 9, a must

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suitable adhesive must not be migrating, in particular the mass must not migrate into the polyvinyl chloride, from which the records are usually made. Furthermore, the adhesive must adhere firmly to the window, so that it does not leave it and sticks on the turntable or on the records. The material must be pliable so that it fills the individual record grooves on the side that is currently played is opposite. As previously mentioned, the disc is usually shaped to have the shape of a Record is adapted, but if the material is pliable, the adaptation can be particularly good. It should can also dissipate static charges on the record surface, it is said to be through record cleaning chemicals not be adversely affected and must be chemically stable.

The embodiment according to FIG. 9 also offers the advantage the positive coupling of the disc with the platter, the reduction of the resonance, the automatic removal from dust and dirt from the lower base of the record, from flattening, at least when playing, from low warping and the avoidance of any possibility of slipping of the record.

End of description.

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Summary;

Device for securing a record on the turntable of a turntable. The device has a releasable attachment in its center to align with the central opening in a record and for attachment to the turntable. Arms extend from the record to exert pressure mentioned attachment to the outside to ensure that the record is in contact with the turntable when playing to keep.

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Claims (14)

Claims; l.j device for securing a record with a central opening, a central area surrounding this opening and a sound groove area on a turntable of a turntable, characterized by a releasable fastener in its center for alignment with the central opening in a record (8) and for fastening to the turntable (14), pressure-exerting elements which extend outwardly from the fastening element in order to apply pressure to the Exercise mentioned operating range, so that the record when playing safely in support on the Platter is held. 2. Apparatus according to claim 1, characterized in that the turntable has a central spindle, and the releasable fastening member is formed by a clamp which extends over the outside of the spindle temporarily recorded. Ö30034 / 06S3 3. Apparatus according to claim 1, characterized by a central hub (2), arms (4) extending outward from the hub, a leg (6) at the end of each arm (4) which is when the device is in its position of use, extends downward to rest on the middle region of the record (8), a slotted tube (10), the extends downward from the hub (2) when the device is in its position of use, and on one of the turntable (14) upwardly directed spindle (12) sits a collar (16) the outside of the slotted tube (10), in order to compress the latter on the spindle when the collar has the Tube is moved downward away from the hub. 4. Apparatus according to claim 3, characterized in that the slotted tube (10) has the aim when it is not held together by the collar (16) to open outwards and downwards. 5. Apparatus according to claim 3, characterized in that three are equally spaced from each other Arms (4) and legs (6) and flexible feet (20) at the end of each leg to rest on the central area the record are provided. 6. Apparatus according to claim 1, characterized in that that the central hub (2) has a central opening in alignment when the device is in its 030034/0693 4702-7 Use position is, with the central opening of the record (8), arms (4), which are on the Hub (2) extending outwards, a leg (6) at the end of each arm (4), which leg if the device is in its position of use, down to rest on the central area the record (8) extends, a screwable member (28) with a head part (30) for support the top of the central hub (2) and a threaded shaft (32) which is dimensioned so that it can pass through the Central opening in the hub (2) passes through for engagement with a thread on a turntable spindle (36) for clamping a record on the turntable (14) when playing. 7. Apparatus according to claim 6, characterized in that that the shaft (32) has an internal thread and the spindle has a corresponding external thread (34). 8. Apparatus according to claim 6, characterized in that the shaft (32) has an external thread and the spindle has a corresponding internal thread (35). 9. Apparatus according to claim 6, characterized by three equidistant from one another Arms (4) and legs (6) and flexible feet (20) at the end of each leg to rest on the central area the record (8). 10. The device according to claim 1, characterized by (530034/0693 4702-7 a circular body (54) with a radius,
which is approximately equal to or smaller than that of the central region of the record (8), a spindle (56) which extends downwardly for frictional engagement with a central opening in the record (8) and
a central opening (58) in the turntable (14) for clamping a record onto the turntable during playback. 11. The device according to claim 1, characterized by
a circular body (54) with a radius,
which is approximately the same as that of the middle area of the record (8) or smaller than this, a central opening (64) for placing on a standing spindle (60)
a turntable (14), a circumferential groove (62) in the spindle (60), a corresponding groove (66) in the interior of the central opening (64), an associated engagement element (68) for engagement with both grooves to secure the circular body in its location on the spindle. 12. The device according to claim 1, characterized by a hollow turntable spindle (38), members (40) which are in their rest position within the spindle, openings (42) in the spindle, one for each link, a closed slot (44) in each Link, one pin (46) for each link that passes through the slot (44) in a link within the Spindle extends, each pin adjacent an opening (42), a reciprocating member (48) in the Spindle to bear against the inner ends (50) of each link (40), so that by an upward movement of the $ 30034/0693 4702-7 reciprocating organs the lower ends of the limbs, guided by the engaging in the slots Pins (46) pushed up and the upper ends (52) to rest on the central area be pressed down. 13. Record holding device for arrangement between a record and a turntable of a Turntable, characterized by a central opening for alignment with the central opening (22) in the record (8) and the turntable spindle (12), a first side of the device being so shaped is that they are the surface of the turntable (14) is adapted, a second side of the device is shaped so that it is a surface of a record (8) 'is adapted to have an adhesive layer on each side of the device for temporary adhesion the device on the turntable and the record for securing the record on the turntable when playing. 14. The device according to claim 13, characterized by a protective cover for the adhesive when the device is not in use. O30034 / 0693