US2508715A - Phonograph apparatus - Google Patents

Phonograph apparatus Download PDF

Info

Publication number
US2508715A
US2508715A US588924A US58892445A US2508715A US 2508715 A US2508715 A US 2508715A US 588924 A US588924 A US 588924A US 58892445 A US58892445 A US 58892445A US 2508715 A US2508715 A US 2508715A
Authority
US
United States
Prior art keywords
record
turntable
feeler
door
tone arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US588924A
Other languages
English (en)
Inventor
Emil I Harman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxar Space LLC
Original Assignee
Philco Ford Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB615993D priority Critical patent/GB615993A/en
Application filed by Philco Ford Corp filed Critical Philco Ford Corp
Priority to US588924A priority patent/US2508715A/en
Application granted granted Critical
Publication of US2508715A publication Critical patent/US2508715A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/04—Feeding or guiding single record carrier to or from transducer unit
    • G11B17/05—Feeding or guiding single record carrier to or from transducer unit specially adapted for discs not contained within cartridges
    • G11B17/051—Direct insertion, i.e. without external loading means
    • G11B17/0515—Direct insertion, i.e. without external loading means adapted for discs of different sizes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/02—Details
    • G11B17/04—Feeding or guiding single record carrier to or from transducer unit
    • G11B17/0401—Details
    • G11B17/0405—Closing mechanism, e.g. door
    • G11B17/0407—Closing mechanism, e.g. door controlling the loading of the record carrier
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/02—Arrangements of heads
    • G11B3/08—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers
    • G11B3/085—Raising, lowering, traversing otherwise than for transducing, arresting, or holding-up heads against record carriers using automatic means
    • G11B3/08503—Control of drive of the head
    • G11B3/08506—Control of drive of the head for pivoting pick-up arms
    • G11B3/08509—Control of drive of the head for pivoting pick-up arms using mechanical detecting means
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/06—Cabinets; Cases; Stands; Disposition of apparatus therein or thereon combined with other apparatus having a different main function

Definitions

  • This invention relates to phonographs and more specifically to a novel phonograph apparatus which is adapted to play records with a minimum of efiort on the part of the operator.
  • One object of the present invention is to provide a novel phonograph apparatus in which the operating parts are not accessible, and in the use of which it is only necessary to insert and remove records through a door-closed restricted aperture of slot-like form, and to operate the door.
  • Another object of the invention is to provide a phonograph apparatus in which the operating parts are enclosed at all times within a housing or enclosure having a restricted opening for inserting and removing records, and the said parts are actuated from outside said housing b means of a manual control member which is preferably a door or lid adapted to conceal said opening.
  • Still another object of the invention is to provide a phonograph apparatus of this character in which the tone arm and the turntable driving means are controlled or actuated in response to the Opening and closing movements of a door or lid associated with the record-insertion opening.
  • a further object of the invention is to provide a phonograph apparatus of the stated character which is adapted to play different sized records without any further efiort on the part of the user. This is accomplished by the provision of a novel feeler mechanism and stop arrangement which automatically limits the movement of the tone arm according to the size of the record inserted in the aforementioned opening.
  • a further object of the invention is to provide an arrangement, including the feeler mechanism and stop means adjustable thereby, for positioning an inserted record on the turntable.
  • Fig. 1 is a perspective view of a radio-phonograph combination embodying the invention
  • Fig. 2 is a sectional view taken vertically through the same
  • Fig. 3 is a horizontal sectional view showing the phonograph apparatus in plan
  • Fig. 4. is a perspective view of a slide member which serves to actuate the parts as previously mentioned;
  • Fig. 5 is a fragmentary perspective view showing the cord and pulley arrangement employed
  • Fig. 6 shows the phonograph apparatus in side elevation with the door in closed position, and with a small sized record on the turntable;
  • Fig. 7 is a sectional view taken along lines 'll of Fig. 3, showing the parts in the positions which they assume when the door is opened and a large size record is inserted;
  • I Fig. 8 is a detailed sectional view showing more clearly the receding spindle arrangement which is preferably employed;
  • Fig. 9 is a fragmentary plan view of the feeler mechanism
  • Fig. 10 is a fragmentary plan view showing the latch member of the sam mechanism in a different position than that of Fig. 9;
  • Fig. 11 is a detail view of the switch mechanism which controls the turntable operation, said view being taken along line H-il of Fig. 3;
  • Fig. 12 is a view of the same mechanism taken from the left side of Fig. 11;
  • Fig. 13 is a plan view of the same mechanism ⁇ Figs. 14 and 15 are explanatory views showing how the switch is operated;
  • Fig. 16 is a plan view similar to Fig, 3, showing a modified form of the feeler mechanism
  • Fig. 17 is a fragmentary view of the latch member in a difierent position than that of Fig. 16;
  • Fig. 18 is a vertical sectional view of another embodiment of the phonograph apparatus.
  • Fig. 19 is a fragmentary plan view, partly in section, showing certain parts of the feeler mechanism
  • Fig. 20 is a detail sectional view taken along line 20-20 of Fig. 19;
  • Fig. 21 is a perspective view of the apparatus, showing the tone arm actuating mechanism in the course of operation;
  • Fig. 22 is a plan view of the operating mechanism which adapts the apparatus for the playing of different sized records
  • Fig. 23 is a perspective view illustrating further the tone arm controlling mechanism
  • Fig. 24 is a detail sectional view taken along line 2424 of Fig. 23;
  • Fig. 25 is an exploded view illustrating certain parts of the apparatus.
  • the novel phonograph apparatus of the present invention is shown embodied in a radio-phonograph combination comprising a cabinet l, radio receiver 2 and its associated dial 3 and control knobs 4, phonograph apparatus 5, and loudspeaker 6.
  • the phonograph mechanism is supported by a horizontal shelf or panel 1 within the cabinet.
  • the phonograph tone arm and turntable are shown at 8 and 9, respectively.
  • the phonograph apparatus is inaccessible to the user, and provision is made for the playing of successive-records simply by inserting them into a restricted slot-like opening adjacent the turntable 9, and by operating a door associated with said opening.
  • a front wall member H which forms a part of the cabinet structure and which has the record-insertion opening Ill therein.
  • a record I2 is shown on the turntable, and it will be noted that the record protrudes from the opening [I] into a recess l3 provided in member II.
  • the purpose of this arrangement is to enable insertion and removal of the record as will be obvious.
  • phonograph apparatus is shown in Figs. 1 and 2 as a part of a radio-phonograph combination, it need not be associated with a radio receiver, as will be well understood.
  • the turntable 9 is arranged in relation to the restricted opening l9 so that the upper surface of the turntable is slightly above the bottom surface of the opening. This permits the record i2 to rotate freely with the turntable. It will be noted also that the door it has a recess Is to accommodate a larger sized record represented in dot and dash outline at i2.
  • a guide member II is securedto wall H and extends therefrom above the turntable as shown.
  • This member may take the form of a strip or plate of metal or other material, and its purpose is to insure proper insertion of the record, as will be seen later.
  • the record is centered on the turntable by means of a central spindle l6 (Fig. '7) which is automatically retracted in response to opening movement of the door M, as will be described further hereinafter.
  • the turntable is supported by means of a bearing structure 17 carried by the supporting shelf or panel I.
  • the details of the bearing structure are unimportant except hat it may be noted thatthe record-centering spindle I6 is slidably mounted within the same structure.
  • the turntable is driven in conventional manner (see Fig.
  • a driving friction wheel 18 which is mounted on a pivoted bracket [9 and is maintained in engagement with the turntable flange by a springZll, one end of which is attached to the bracket l9 while the other end is secured to a stationary pin 2
  • Th wheel i8 is driven by a smaller wheel or roller 22 which in turn is suitably driven by the driving motor unit 23.
  • I'he tone arm 8 is mounted at the upper end. of a spindle 24 (see Fig. 6) which is rotatably supported by a hollow post 25 mounted on the supporting panel I, so that the tone arm adapted to move laterally or horizontally with The tone arm is pivotally mounted on a horizontal pivot 9 so as to be vertically movable with respect to the record.
  • the tone arm carries a suitable pick-up which may be of conventional form and which includes the usual needle or stylus 2%.
  • an extending arm 2'5 the purpose of which is to actuate a switch mechanism 28 at the end of the playing of a record so as to automatically stop the rotation of the turntable, as will be further described hereinafter.
  • the operating ports are controlled by the movements of the door i i.
  • a slide member 29 (see Fig. 4), which is slidably supported by the supporting panel.
  • Member 29 has slots 36. and Si therein, by means of which it is slidably supported for rectilinear movement forwardly and rearwardly.
  • the supporting arrangement for the slide member 29 may in clude a pair of fastening elements, such as screws 32 and 35, which are carried by the supporting panel i and which extend through the slots 38 and 31 respectively.
  • the slide member 29 hasa depending lug 34 to which one end oi aconnccting link 35 is piv otally connected.
  • the other end of link 35 is pivotally connected to the door I4 at a point -36 (see Fig. 6) offset from the hinge or pivot 3'! of the door.
  • the link 35 is pulled forwardly so as to move the slide member 29 from the position of Fig. 6 to that of Fig. 7 and when the door i closed, the said parts are moved in the reverse direction so that the slide member *9 moves to the position of Fig. 6.
  • An important feature of the apparatus provided by the present invention is the control of the various moving parts by a single movable memher, in this instance the slide member 29, which is actuated by the door.
  • Fig. 6 there is provided at the rear of the tone arm 8 an extending lug 38 carrying a screw as to which one end of a flexible cord is attached.
  • the cord passes around a pair of pulleys ti and 42, and its other end is attached to one "end of a helical spring 43 Whose other end is secured to a screw 44 carried by a depending lug 35 on the slide member 29-.
  • the pulleys ii and *42 see Fig.
  • the bracket 53 has cord guiding and retaining portions 4i and 42' as clearly shown in Fig. 5.
  • the pulleys are so arranged that when a pull is exerted on the cord as by the forward movement of the slide member 29, the tone arm 'is subjected to both vertical and horizontal force components which lift the tone arm off of the record and swing it laterally toa position in which it may be lowered onto the next record.
  • the horizontal pivot '8 of the tone arm is 'so arranged in relation to the vertical :pivotal support that the vertical force component is effective to lift the needle or stylus off the record before the tone arm is moved laterally, thus preventing scr-atching of the record.
  • the phonographapparatus provided in accordance with the invention is adapted to condition-itself automatically for the playing of different sized records. Since records are commonly-made in two sizes, inch and 12 inch respectively, "the apparatus is preferably designed to playsu'ch records. This feature of the invention involves the provisionp'f a feeler mechanism now to-be-described. "Specific features of this mechanism are claimed in the abovementioned Thompson application. As 'sheivn'in FigB, this -me'c'liahism”may comprise a pair of ii-shaped members 4 i and 48 pivotally supported at the upper side of supporting panel i at points is and efi respectively.
  • a stop 5? is arranged so as to be engagea-ble by arm '54 and serves to limit the inward movement of the two arms.
  • each of the forward-1y extending arms 54 and 55 carries a roller 58 and 59 for engagement with an inserted record as hereinafter described.
  • the arm '55 also carries a post 60 which serves as a positioning or indexing means for the tone arm, so as to govern the record-commensing position of the tone arm according to the size of the record which it is desired to play in any instance.
  • a covering 6'! on the upper part of post ts may be used to cushion the tone arm when it engages the post.
  • the connecting pin 53 for the feel'er members '41 and H8 is movably mounted ina slot 62 provided in the supporting panel 1.
  • the pivot pin has .a projection 63 which is e'ngageable'by ala'tch member 6'4 (see Figs. 9 and 10) which is pivotally carried at the underside of the supporting panel at 65.
  • This latch member is shaped .as illustrated and has a recess 65 into which the projection 63 may enter, as shown in Fig. 10.
  • the latch memher 6 3 also has a slot "61 through which a pin 68 on the slide member 29 extends.
  • the record 42 shown in solid lines, is a small sized record, -e.-g. a 10inch record. Normally thefeeler-armsid and -55 are positioned in their innermost positions, as shown in :Fig. 3, and the pin 53 .is removed from the latch :member 64.
  • the rollers 58 and 59 are spaced apart sufiicientlyso that a 10 inch record may be inserted between them without actuating the fe'eler mechanism, as may-be seen in Fig. 3.
  • the rollers are .freeofath'e edge of the record.
  • the stop 51. which establishes the innermost position "of the rollers, tis eccentric in form and may beadjusted to ;provide thedesiredclearance between the rollersandthe record.
  • the pin '53 moves forwardly .in the slot 62, bringing the projection 63 of said 'pin 'int'o the position shown in Fig. 9. .At-this time, the feeler'ar'm's are being held in their outer position by thelarger record 12', as shown by theitsolid lirre illustration in Fig. 9.
  • the slide member :29 moves the latch "member $4 to the position of Fig. -10.
  • the latch member thus latches the feeler arm's in theirouter position and it is also shaped so as to "cam the'jpin projection 63 slightly forward'an'd thereby "move 'thefe'el'er arms-a little-rurtherputwardly so thattheroliers 88 and 59 are free of the record I2, as shown by the broken line representation of the arm 54 in Fig. 9.
  • the latch member 64 is returned to the position of Fig. 9, and when the record I2 is removed, the feeler arms return to their inner positions.
  • the feeler arms are moved outwardly sufficiently to clear the record as soon as the door is closed, and when the door is opened the record is removed, the feeler arms return to their normal inner position.
  • One purpose of the feeler arm movement is to position the tone arm indexing post 60 so that the tone arm will be properly indexed for the different sized records.
  • the post 68 is positioned as shown in Fig. 3 so as to index the tone arm for the smaller sized records, but when a larger sized record is inserted, the indexing post is moved outwardly to a position in which it indexes the tone arm for the larger sized record.
  • the centering spindle It has its upper end tapered and it is carried by a rod 69 which is slidably mounted within the turntable bearing structure [1. At its lower end, the rod 69 carries a block 70 from one side of which projects a pin H The latter is disposed in a cam slot '12 (see Fig. 4) of 9, depending plate 13 formed integrally with the slide member 29.
  • the cam slot 12 is so shaped that it lowers and raises the centering spindle (B in response to opening and closing movements of the door Hi. When the door is closed, the pin 1
  • this rear stop structure comprises a stationary stop 14 mounted on the supporting panel I and a movable stop '15 pivotally mounted on the stationary stop at 15.
  • Movable stop is generally of U shape and has downwardly extending arms 11. The ends of these arms are interconnected with the pin 53 which intercom nects the arms 5i and 52 of the feeler mechanism, as previously described.
  • the pin 53 has an upper projection 18, and a connecting element 19 serves to interconnect the arms ll with the said upper projection of the pin 53.
  • the element 19 may take the form of a piece of stiff wire or a bendable rod whose intermediate portion encircles the projection 18 and whose ends are secured to the arms 11.
  • the pin 53 When the feeler mechanism is in the normal position for the playing of smaller sized records, as previously described, the pin 53 is at the rear of slot 62 and the movable stop 15 is in operative position, as shown in Fig. 6, and serves to limit the movement of a record during insertion thereof. However, when the feeler mechanism is actuated by the insertion of a larger sized record, as previously described, the pin 53 moves forwardly in slot 62 and raises the stop 15 to an inoperative position, as shown in Fig. '7. The stationary stop 74 is then effective to limit the movement of the larger sized record as the latter is inserted. It should be noted that the movable stop 75 is raised before the edge of the record reaches the location of the stop structure.
  • either sized record is approximately centered on the turntable, and when the center spindle 16 moves upward to its operative position, its tapered end enters the center hole of the record and the spindle centers the record exactly on the turntable.
  • the switch mechanism 28 hereinbefore mentioned, the purpose thereof is to automatically stop the turntable at the end of the playing of a record, and to control the rotation of the turntable in response to movement of the door M.
  • the switch mechanism per se is claimed in the above-mentioned Thompson application.
  • the switch mechanism is shown in detail in Figs. 11 to 15 to Which reference may now be had.
  • This mechanism comprises an inverted U-shaped supporting bracket '86 secured to the underside of the supporting panel 1, the under surface of which is represented by the dot-anddash horizontal line in Figs. 11 and 12.
  • the bracket 88 carries a rotatable shaft 8
  • a mercury switch M is carried by a supporting member 85 which is mounted on one end of the shaft 8
  • Member '85 extends upwardly from the axis of rotation and carries a pin 88 at its upper end, upon which an actuating element 89 is pivotally mounted. The pivot point is above the center of mass of element 89, so that the latter normally assumes a vertical position.
  • the upper end of element '89 is provided with a friction hood 90 preferably formed of rubber or like material.
  • the element 89 functions cooperatively with the previously mentioned arm 21 to actuate the switch mechanism at the end of the playing of a record, as will be described presently.
  • a resilient member 8 l which may take the form of a piece of spring wire or the like, is secured to the bracket 88 at 92 and is wound about a supporting projection or finger 93 on the bracket 80, and has its lower end portion in frictional engagement with the shaft 8! so as to impose a frictional drag on the shaft and thus tends to oppose rotation of the shaft. The purpose of this will appear presently.
  • a resilient finger 9A which is engageable by a cam member 95 (see Fig. 4) formed integrally with the slide member '29, the purpose of which will also appear presently.
  • the arm 21, which extends from the lower end of the tone arm-supporting spindle 24, has an enlarged end forming a plate 96 which is adapted to engage the friction hood 99, as shown in Figs. 14 and 15.
  • the arm 21 is so positioned in relation to the tone arm *8 that the plate 96 engages the friction hood 90 when the needle or stylus engages the eccentric groove at the end of a record, the said groove being shown in Fig. 3 at 91.
  • the eccentricity of the groove 91 may vary from one record to another, and the switch mechanism is designed to insure operation of the switch regardless of such variation.
  • the operation of the switch mechanism may best be explained with specific reference to Figs. 12 to 15.
  • the mercury switch 84 is connected in circuit with the turntable driving motor so as to control the operation thereof, and during playing of a record, the switch is in the position of Figs. 12 and 14 in which it is closed, so that the turntable driving motor is energized.
  • the element 89 Prior to the engagement of plate 96 with the friction hood 99, the element 89 is vertically positioned, as shown in Fig. 12, due to the fact that its supporting pin 88 is above its center of mass.
  • the plates 96 As the needle or stylus approaches the eccentric groove at the end of the record, the plates 96, moving from left to right, as viewed in Figs 12, 14 and 15, engages the friction hood 9! and defiects the element 89 to a position such as shown in Fig. 14.
  • the stylus enters the eccentric groove at the end of the record, the plate 96 moves back and forth, as indicated by the double head arrow in Figs. 14 and 15. The range of this oscillatory motion of the plate 96 is indicated by the dotted line representation in Fig.
  • the cam member 95 is in the left hand position shown in Figs. 11 and 13.
  • the cam member 95 moves to the right hand position shown in dotted outline in Figs. 11 and 13, and during such movement the upper surface of the inclined cam member engages the end portion of resilient finger 94.
  • cam member 95 functions, in response to movement of the door I 6, to insure that the switch 84 is opened and to close the switch so as to start rotation of the turntable when the door is closed.
  • the switch mechanism 28 opens the switch 81!. to stop the turntable in the manner just described.
  • the slide member 29 moves forwardly, and in doing so it performs several functions. It lifts the tone arm 9 off of the record and moves it to a starting position above the marginal portion of the record through the action of the cord and pulley arrangement, as hereinbefore described. It also moves the latch member 64 (Figs. 9 and 10) to an ineffective position. It also lowers the record centering spindle It to its inoperative position. It also insures that the motor switch 84 is opened.
  • the user may now remove the record which has just been played and insert a new record.
  • the feeler mechanism is not actuated but the other parts are actuated in response to closing movement of the door 14.
  • the rollers 58 and 59 and the stop E5 serve to center the record approximately, as previously described.
  • the rearward movement of slide member 29 raises the centering spindle l6, closes switch 84 to start rotation of the turntable, and lowers the tone arm to bring the stylus into engagement with the mar inal portion of the record.
  • the parts are so designed that these functions are performed in the order named.
  • the spindle is exactly centers the record so that it is free of contact with the feeler rollers and the rear stop. The o erating cycle is now repeated.
  • the feeler mechanism is actuated, causing pin 53 to move forwardly in its slot 62 and thus moving the stop 15 to an inop erative position, as shown in Fig. 7.
  • the approximate centering of the record is then effected by the stationary stop M in cooperation with the rollers 59 and 59.
  • the pin 53 is latched in its forward position by the latch member 55 and is also cammed by the latch member sufiiciently to disengage the rollers 58 and 59 from the edge of the record, as previ-- ously described. with reference to Figs. 9 and 10.
  • the parts are actuated in the same manner reardless of the size of the inserted record.
  • Figs 16 and 17 there is shown a modification of the feeler mechanism, by means of which a possible objection of the previously-described mechanism is eliminated.
  • the feeler arm rollers 58 and 59 (see Fig. 3) are disposed at the widest part of the record, and if the record should strike the rear stop with considerable force, the record might rebound outwardly and the center hole thereof might not be substantially aligned with the centering spindle.
  • the modification of Figs. 16 and 17 prevents this from happening.
  • the feeler arms 54a and 55a (the latter carrying the tone arm positioning post 6011) are extended forwardly so that the rollers 58a and 59a.
  • the feeler mechanism is actuated by both the smaller and larger sized records, and the latch member 6011 is provided with two recesses 98 and 99 so as to latch the feeler arms in different positions for the different sized records.
  • the different sized records are shown for comparison at I2 and I2. If a smaller sized record is inserted, the feeler arms are inwardly disposed and the pin 53 is in the rearward end of its slot 62.
  • the pin projection 83 enters recess 99 when the latch member 64a is moved to its operative position, and the feeler arms are latched and are also moved outwardly a slight amount to disengage the rollers from the record, by virtue of slight camming of the pin projection 63 as it moves into recess 99.
  • feeler arms 54a and 55a are moved outwardly, causing the pin 53 to move to the forward end of its slot 62 in which it is positioned to enter the recess 98.
  • the feeler arms are latched and are moved outwardly a slight amount to disengage the rollers 58a and 59a from the record, by reason of the camming of the pin projection 63 as it moves in recess 98.
  • the modified feeler mechanism of Figs. 16 and 1'7 may be employed in the apparatus of the previous figures without changing the other parts, since such modification merely involves extension of the feeler arms and a different design of the latch member.
  • Figs. 18 to 24 there is illustrated another embodiment of the phonograph apparatus embodying the features of the present invention.
  • the housing or cabinet is not fully shown.
  • the front portion of the housing is shown at I00, with which there is associated a movable door or closure member IIII which is pivotally supported on brackets I02 secured to a mounting panel I03, the latter being fixedly mounted within the housing structure in any suitable manner.
  • the housing or cabinet is provided with a slot-like recordinsertion opening I04 to which access is had by moving the door II" to the open position shown in Fig. 18.
  • the door When the door is in its closed position, as indicated by the broken line representation in Fig. 18, it conceals the opening I04.
  • the record-supporting turntable I05 is rotatably mounted on the supporting panel I03 by means of a suitable bearing structure I06.
  • the turntable may be driven by means of a driving motor unit I01 in conventional fashion.
  • the record centering spindle I08 is stationary, and it is necessary to insert the record, shown at I09, in an inclined position. Consequently the slot I04 must be of greater depth than that provided in the'previously described apparatus.
  • the parts are so dimensioned that when a record is inserted in an inclined position, as shown in dot and dash outline in Fig. 18, the record clears the top of the spindle I08 and engages the rear portion of the turntable, so that the record may he slid inwardly until it engages a stop hereinafter described and then lowered into place.
  • the tone arm H0 is rigidly mounted at the upper end of a supporting spindle which is slidably and rotatably mounted within a hollow supporting post III.
  • the lower end of the tone arm supporting spindle is visible in Figs. 18, 21 and 23 and is designated II2.
  • Extending laterally from the lower portion of the tone arm supporting spindle are arms H3 and H4 (see Fig. 23), the purpose of which is to effect and control movement of the tone arm as hereinafter described.
  • the tone arm carries a suitable pick-up including the usual needle or stylus II 5.
  • the tone arm is actuated and the rotation of the turntable is controlled by the movements of the door IOI through a link I I6, one end of which is pivotally secured to the door structure at 1, and the other end of which is pivotally secured to a slide member H8 at II9 (see Figs. 21 and 23).
  • the slide member H8 is slideably mounted on a depending stationary bracket I20 by means of pins I2I on the bracket and associated slots I22 in the slide member.
  • This slide member has a flange I23 (see Fig. 18) which extends beneath the supporting bracket I20, and which carries a cam member I24 having an inclined surface I25.
  • the flange and cam member are engaged by the lower end of the tone arm supporting spindle and serve to raise and lower the tone arm as the slide II8 moves forwardly and rearwardly in response to opening and closing of the door IOI.
  • a second slide member I26 Adjacent the slide H8 is a second slide member I26 having slots I21 through which the pins I 2I extend.
  • This second slide member is urged forwardly by a spring I28 having one end secured to 2.
  • the forward movement of the second slide member I26 is limited by a pin I3! thereon which rides in a slot I3I' in the first slide member I I 8.
  • the bracket I20 and the slide members H8 and I26 (see Fig. 25) have aligned openings therein, designated I 32, I33, and I34 respectively, through which the arm IM projects, as may be seen in Figs. 21 and 23.
  • the opening in the slide member I26 is normally ofiset forwardly with respect to the opening in the adjacent slide member I I8, as may be seen in Fig. 23.
  • the purpose of the 76 structure just described is to move the tone arm 13 laterally through the medium of arm H4 as will be seen more clearly later.
  • the slide member IIB also serves to operate a switch which controls the turntable driving motor.
  • the slide member is provided with a projection E35 which is adapted to operate a push-button switch I35 (Figs. 18 and 25) which is mounted on bracket I253.
  • the switch is normally closed, and when the slide H8 moves forwardly, as the door is opened, the projection 135 engages the switch and thus opens it.
  • the projection I55 moves away from the switch and the latter closes.
  • a feeler mechanism which is engageable by the record.
  • This mechanism includes the mechanical linkages and parts shown in Fig. 22 which is a plan view of the parts immediately below the supporting panel 593, the latter being shown in dot and dash outline.
  • Fig. 22 is a plan view of the parts immediately below the supporting panel 593, the latter being shown in dot and dash outline.
  • a pair of L-shaped slides 35 and 31 having pins H18 and use which extend through slots me and Mi, respectively, in the supporting panel M33.
  • the two slides are urged toward one another by a spring I42 having its opposite ends secured to the slides at I43 and M respectively.
  • the two slides are movable in a horizontal plane parallel to the supporting panel 93 and they are normally maintained in inner positions by the spring I42.
  • the outermost pins I38 and H9 carry plates M5 and I46 (Figs. 19 and 21) on which there are fixedly mounted feeler members i4! and I48 which are shaped to receive an inserted record.
  • the feeler members have channels M9 and I58 for receiving a record and for guiding it inwardly, as shown in Fig. 18.
  • the plates M5 and M5 carry latch members 55! and I52 each of which has a pivot, as shown at I53 in the left hand portion of Fig. 19, and an associated biasing spring 55d. members are adapted to cooperate with keeper in the form of lugs E55 and the turned up from the mounting panel I93.
  • the latch members carry upstanding pins i5?
  • a lever I6! is pivotally secured to the supporting panel I03 at I62.
  • the lever IIiI carries a pin !63 which projects upwardly through an arcuate slot Hi l in the panel I03. This pin serves as a rear stop for the inserted record, and it facilitates positioning of the record on the turntable.
  • the lever 45! is moved to position the pin I63 by means of a link l55, one end of which is pivotally secured to the lever IBI at I68.
  • the opposite end of link I65 is pivotally attached to links I61 and I68 by means of a connecting pin 159 which is supported and guided by a slot I in the sup porting panel I 03.
  • Links I6! and I 58 are pivotally connected to slides I35 and I 3! at HI and H2 respectively.
  • the links I61 and I68 have a special purpose, as will be seen presently.
  • An arm I13 has one end pivotally supported by the tone arm supporting post and has a slot The latch I'M at its opposite end through which one of the pins I39 extends.
  • the purpose of arm I13 is to support certain elements which function cooperatively with the arm H3 (see Fig. 23) to govern the movement of the tone arm III).
  • the arm I13 carries a depending finger I and it also carries a resiliently mounted detent member H6. The latter is mounted on a resilient plate I'll which is secured to arm I13 in spaced relation thereto by means of a supporting block E'IB.
  • a screw I it carried by arm I73 (see Fig. 24) extends through an opening in member H6 and serves as a support and stop therefor.
  • the elements I75 and I16 are formed to provide a recess or space I8!) (see Fig. 24) into which the end of arm 5 I3 is adapted to enter.
  • the latch members ifii and E52 are normally free of their respective keepers $55 and the feeler members Id? and hang disposed in their inner positions shown in dot and dash outline in Fig. 19.
  • the pin is normally disposed in the forward portion of its slot by reason of the disposition of the associated controlling mechanism. In such condition of the parts, if a smaller sized record (e. g. a lo inch record) is inserted, the pins l5? and lbs merely serve in cooperation with pin 5553' to facilitate the centering of the record.
  • the arm I I 3 is elevated. lvieanwhile, the slide member I25 engages arm t id and swings the tone arm outward, at the same time moving arm IE3 inward toward the stop member
  • the arm H3 engages the lower inclined edge of member ill; and raises the same slightly against the resilience of plate l'il'.
  • the arm disengages member lit which snaps back to its normal position, so that the arm is then retained in the recess or space we.
  • the tone arm is then positioned above the marginal portion of the record ready to commence the playing of a new record.
  • the forward movement of the slide member IIB also opens the push-button switch for the turntable driving motor so as to deenergize the motor and stop the rotation of the turntable.
  • the user Having opened the door till, the user removes the played record by tilting it suiliciently to disengage it from the centering pin and then pulling it outwardly through the slot opening its, as may be seen clearly from Fig. 18.
  • the user inserts a new record which enters the recesses i 39 and iii! of the ieeler members. Assuming first that the user inserts another smaller sized record, 1. e. a
  • the peripheral edge of the record will engage the pins I51 and I58 which cooperate with the rear pin I63 to guide the record into place on the turntable.
  • the feeler members I4? and I48 may be slightly deflected outward from their inner positions shown in dot and dash outline in Fig. 19, but such deflection is insufficient to cause latching of the latch members i 5! and I52 which are disengaged from their keepers or detents I55 and I56.
  • the reason for the auxiliary slide member I will now be more clearly seen.
  • the range of movement of the slide member H8 is fixed, since it corresponds to the movement of the door I51 I.
  • the range of horizontal movement of the tone arm varies according to the different sized records.
  • the auxiliary slide member I26 compensates for this difference between the ranges of movement of said parts.
  • the links I61 and I68 (Fig. 22) have a special purpose. These links not only form a part of the mechanism which positions pin I63 and arm I13 according to the size of an inserted record, but they also prevent improper operation of the said mechanism in the event that a smaller sized record is pushed against one of the feeler members M1 or I48 with considerable force. Due to the employment of the two links, the mechanism cannot be operated, by pressure on one feeler member, sufficiently to latch in the position for a larger sized record. Thus, the employment of the two links prevents improper operation of the mechanism by a smaller sized record as above mentioned.
  • pins I51 and I58 16 and the feeler members I41 and I48 are disposed forwardly of the widest portion of an inserted record, and therefore these elements prevent rebounding of a record as previously described with reference to Figs. 16 and 17.
  • an enclosure having a restricted opening through which centrally-apertured disk records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a record-centering pin located centrally of said turntable for engagement with the central aperture of a record, a pick-up device arranged within said enclosure for movement into and out of engagement with a record on the turntable, manually-operable means for moving said pick-up device from a record-finishing position to a record-commencing position, adjustable stop means for controlling the record-commencing position of said pick-up device according to the size of an inserted record, adjustable record stop means for limiting the insertion of a record according to the size thereof, a feeler mechanism operatively interconnected with both of the aforementioned stop means to adjust them according to the size of an inserted record, said feeler mechanism including a pair of feeler members cooperative with said record stop means to guide and to arrest an inserted record for engagement by said pin, means normally locating said feel
  • an enclosure having a restricted opening through which centrally-apertured disk records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a record-centering pin located centrally of said turntable for engagement with the central aperture of a record, a tone arm mounted within said enclosure for record-playing movement in cooperation with said turntable, manually-operable means for moving said tone arm from a record-finishing position to a record-commencing position, an adjustable stop for controlling the record-commencing position of said tone arm according to the size of an inserted record, adjustable record stop means for limiting the insertion of a record according to the size thereof, a feeler mechanism operatively interconnected with said stop and said stop means to adjust them according to the size of an inserted record, said feeler mechanism including a pair of feeler members cooperative with said record stop means to guide and to arrest an inserted record for engagement by said pin, means normally locating said feeler members and said record stop means radially 17 from
  • an enclosure having a restricted opening through which records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a record-centering pin associated with said turntable, a pick-up device arran ed within said enclosure for movement into and out of engagement with a record on the turntable, a hinged door on said enclosure adapted to conceal said Opening when in closed position, means operable by said door for moving said pick-up device from a record-finishing position to a record-commencing position, adjustable stop means for controlling the record-commencing position of said pick-up device according to the size of an inserted record, adjustable record stop means for limiting the insertion of a record according to the size thereof, afeeler mechanism operatively interconnected with both of the aforementioned stop means to adjust them according to the size of an inserted record, said feeler mechanism including a pair of feeler members cooperative with said record stop means to guide and to arrest an inserted record for engagement by said pin, said pin
  • a phonograph apparatus an enclosure having a restricted opening through which records may be inserted and removed, a recordsupporting turntable arranged Within said enclosure to receive an inserted record, a recordcentering pin associated with said turntable, a tone arm mounted within said enclosure for record-playing movement in cooperation with said turntable, a hinged door on said enclosure adapted to conceal said opening when in closed position, means operable by said door for moving said tone arm from a record-finishing position to a recordcommencing position, an adjustable stop for controlling the record-commencing position of said tone arm according to the size of an inserted record, adjustable record stop means for limiting the insertion of a record according to the size thereof, a feeler mechanism operatively interconnected with said stop and said stop means to adjust them according to the size of an inserted record, said feeler mechanism including a pair of feeler members cooperative with said record stop means to guide and to arrest an inserted record for engagement by said pin, said pin upon engagement with a smaller sized record serving to disengage such record from said feeler
  • an enclosure having a restricted opening through which records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a record-centering pin associated with said turntable, driving means for said turntable, a pick-up device arranged within said enclosure for movement into and out of engagement with a record on the turntable, a hinged door on said enclosure adapted to conceal said opening when in closed position, means operable by said door for moving said pick-up device from a record-finishing position to a recordcommencing position, means operable by said door for controlling said driving means so as to cause operation thereof only when said door closed.
  • adjustable op mea f controlling h record-co en n p it on of said P kevice according to the size of an inserted record, adjustable record stop means for limiting the insertion oi a record according to the size thereof, a feeler mechanism operatively interconnected with o of th aic em ed stop means to adjust em a co din t the si e o an serted record, said feeler mechanism including a pair of feeler members cooperative with said reco d s p me n to guide and o a t an nserted record fo eng em n b s id in, s d p n upon en agement with a smal er si d rec rd serving to disengage such record from said feeler memb s a om sa d ec r s op ans, s i feele m m ers being movable b an
  • an enclosure having a restricted opening through which centrally-apertured disk records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a record-centering pin located centrally of said turntable for engagement with the central aperture of a record, a tone arm mounted within said enclosure for record-playing movement in cooperation with said turntable, manually-operable means for moving said tone arm from a record-finishing position to a record-commencing position, an adjustable tone arm stop for controlling the record-commencing position of said tone arm, adjustable record stop means for limiting the insertion of a record, a pair of feeler members cooperative with said record stop means to guide an inserted record into position on said turntable for engagement by said pin, mechanism providing mechanical interconnection between said feeler members, said tone arm stop and said record stop means, whereby said feeler members serve additionally to control the adjustment of said tone arm stop and said record stop means, means normally locating said feeler members and said record stop means radially from the
  • a phonograph apparatus an enclosure having a restricted opening through which records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a tone arm mounted within said enclosure for record-playing movement in cooperation with said turntable, a hinged door on said enclosure adapted to conceal said opening when in closed position, means operable by said door for moving said tone arm from a record-finishing position to a record-commencing position, an adjustable tone arm stop for controlling the record-commencing position of said tone arm, adjustable record stop means for limiting the insertion of a record, a pair of feeler members cooperative with said record stop means to guide an inserted record into position on said turntable, and mechanism providing mechanical interconnection between said feeler members, said tone arm stop and said record stop means, whereby said feeler members serve additionally to control the adjustment of said tone arm stop and said record stop means.
  • a phonograph apparatus an enclosure having a restricted opening through which records may be inserted and removed, a record-supporting turntable arranged within said enclosure to receive an inserted record, a record-centering pin associated with said turntable, a tone arm mounted within said enclosure for record-playing movement in cooperation with said turntable, a hinged door on said enclosure adapted to conceal said opening when in closed position, means operable by said door for moving said tone arm from a record-finishing position to a recordcommencing position, an adjustable tone arm stop for controlling the record-commencing position of said tone arm, adjustable record stop means for limiting the insertion of a record, a pair of feeler members cooperative with said record stop means to guide an inserted record into position on said turntable for engagement by said pin, mechanism providing mechanical interconnection between said feeler members, said tone arm stop and said record stop means, whereby said feeler members serve additionally to control the adjustment of said tone arm stop and said record stop means, said pin upon engagement with a smaller sized record serving to disengage such record from said

Landscapes

  • Holding Or Fastening Of Disk On Rotational Shaft (AREA)
US588924A 1945-04-18 1945-04-18 Phonograph apparatus Expired - Lifetime US2508715A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB615993D GB615993A (enrdf_load_stackoverflow) 1945-04-18
US588924A US2508715A (en) 1945-04-18 1945-04-18 Phonograph apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US588924A US2508715A (en) 1945-04-18 1945-04-18 Phonograph apparatus

Publications (1)

Publication Number Publication Date
US2508715A true US2508715A (en) 1950-05-23

Family

ID=24355878

Family Applications (1)

Application Number Title Priority Date Filing Date
US588924A Expired - Lifetime US2508715A (en) 1945-04-18 1945-04-18 Phonograph apparatus

Country Status (2)

Country Link
US (1) US2508715A (enrdf_load_stackoverflow)
GB (1) GB615993A (enrdf_load_stackoverflow)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955826A (en) * 1955-11-18 1960-10-11 Admiral Corp Automatic record player
US3256024A (en) * 1962-03-06 1966-06-14 Playskool Mfg Company Phonograph
US3802710A (en) * 1971-01-16 1974-04-09 Zanussi A Spa Industrie Record player having an automatic record-positioning mechanism
US3934883A (en) * 1974-01-10 1976-01-27 Chambers Robert L Disk record player
FR2525796A1 (fr) * 1982-04-23 1983-10-28 Staar Sa Dispositif automatique pour tourne-disques de mise en position operative d'un disque
US4498162A (en) * 1982-04-23 1985-02-05 Staar S. A. Automatic disc loading apparatus
US4523306A (en) * 1983-01-28 1985-06-11 Staar S. A. Record loading apparatus for a slot type record player
US4627042A (en) * 1982-12-28 1986-12-02 Sony Corporation Loading apparatus for a disc
BE1000472A4 (fr) * 1987-04-13 1988-12-20 Staar Sa Dispositif automatique de chargement de disques de diametres differents sur les plateaux rotatifs de tourne-disques.
US5056077A (en) * 1989-03-03 1991-10-08 Pioneer Electronic Corporation Centering mechanism for automotive disc player
EP2803070A4 (en) * 2012-01-11 2016-06-15 Samsung Electronics Co Ltd PLATE DRIVE WITH VISIBLE PLATE

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56140556A (en) * 1980-04-04 1981-11-02 Pioneer Electronic Corp Bookshelf type record player
BE893023A (fr) * 1982-04-29 1982-08-16 Staar Sa Tourne-disque a chargement automatique du disque.
GB2218254B (en) * 1988-04-30 1992-11-11 Alpine Electronics Inc Disc player

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2100686A (en) * 1932-08-19 1937-11-30 Collaro Christopher Talking machine
US2166986A (en) * 1938-02-18 1939-07-25 Webster Electric Co Inc Phonograph
US2219230A (en) * 1938-07-14 1940-10-22 Earnest J Krause Phonograph pickup
GB539492A (en) * 1939-03-14 1941-09-12 Philips Nv Improvements in radio-gramophones
US2263643A (en) * 1938-11-04 1941-11-25 Garrard Engineering & Mfg Comp Pickup control mechanism for automatic phonographs
US2309352A (en) * 1940-05-09 1943-01-26 Offen Francis John Pickup control mechanism for automatic phonographs

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2100686A (en) * 1932-08-19 1937-11-30 Collaro Christopher Talking machine
US2166986A (en) * 1938-02-18 1939-07-25 Webster Electric Co Inc Phonograph
US2219230A (en) * 1938-07-14 1940-10-22 Earnest J Krause Phonograph pickup
US2263643A (en) * 1938-11-04 1941-11-25 Garrard Engineering & Mfg Comp Pickup control mechanism for automatic phonographs
GB539492A (en) * 1939-03-14 1941-09-12 Philips Nv Improvements in radio-gramophones
US2309352A (en) * 1940-05-09 1943-01-26 Offen Francis John Pickup control mechanism for automatic phonographs

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955826A (en) * 1955-11-18 1960-10-11 Admiral Corp Automatic record player
US3256024A (en) * 1962-03-06 1966-06-14 Playskool Mfg Company Phonograph
US3802710A (en) * 1971-01-16 1974-04-09 Zanussi A Spa Industrie Record player having an automatic record-positioning mechanism
US3934883A (en) * 1974-01-10 1976-01-27 Chambers Robert L Disk record player
FR2525796A1 (fr) * 1982-04-23 1983-10-28 Staar Sa Dispositif automatique pour tourne-disques de mise en position operative d'un disque
US4498162A (en) * 1982-04-23 1985-02-05 Staar S. A. Automatic disc loading apparatus
US4627042A (en) * 1982-12-28 1986-12-02 Sony Corporation Loading apparatus for a disc
US4523306A (en) * 1983-01-28 1985-06-11 Staar S. A. Record loading apparatus for a slot type record player
BE1000472A4 (fr) * 1987-04-13 1988-12-20 Staar Sa Dispositif automatique de chargement de disques de diametres differents sur les plateaux rotatifs de tourne-disques.
EP0286770A3 (en) * 1987-04-13 1989-01-11 Staar Societe Anonyme Device for automatically centering discs with different diameters on the loading means of a disc player
US5056077A (en) * 1989-03-03 1991-10-08 Pioneer Electronic Corporation Centering mechanism for automotive disc player
EP2803070A4 (en) * 2012-01-11 2016-06-15 Samsung Electronics Co Ltd PLATE DRIVE WITH VISIBLE PLATE

Also Published As

Publication number Publication date
GB615993A (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
US2508715A (en) Phonograph apparatus
US2485575A (en) Door operated phonographic apparatus
US4424606A (en) Hinge for opening and closing a dust cover
US2556421A (en) Record player
US2508845A (en) Phonograph apparatus
US2943861A (en) Multi-speed phonograph record player
US2670210A (en) Phonograph apparatus
US2608456A (en) Movable carriage system for phonograph mechanism and the like
US5187700A (en) Apparatus for loading disc records of different size in a compact disc player
US2939713A (en) Record player
US2307259A (en) Phonographic reproducing device
US2712942A (en) Talking machine
US2640700A (en) Phonograph and the like
US2657060A (en) Change cycle control mechanism
US3409339A (en) Damping device
GB1189781A (en) Sound Reproducing Mechanism.
US3372937A (en) Electrical transducing
US3417998A (en) Vertical record player
US2597113A (en) Phonograph apparatus
US2622885A (en) Record changing apparatus
US4303999A (en) Phonograph having an improved tone arm assembly
US2496666A (en) Phonographic toy telephone
US2250242A (en) Disk dictating machine
US2984710A (en) Dictating machine
JPS61162861A (ja) デイスクカセツト插入装置