|Publication number||US3848875 A|
|Publication date||Nov 19, 1974|
|Filing date||Nov 30, 1972|
|Priority date||Dec 6, 1971|
|Also published as||CA969871A, CA969871A1|
|Publication number||US 3848875 A, US 3848875A, US-A-3848875, US3848875 A, US3848875A|
|Original Assignee||Matsushita Electric Ind Co Ltd|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (6), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent 1191 Miyoshi Nov. 19, 1974 1 AUTOMATIC RECORD PLAYER  Int. Cl. Gllb 17/08  Inventor: Seizo Osaka Japan Fleld of Search 274/10 R  Assignee: Matsushita Electric Industrial Co.,
Ltd Osaka, Japan  References Cited 22 Filed: Nov. 30, 1972 UNITED STATES PATENTS 3,625,521 12/1971 Caddy 274/10 R PP N011 310,708 3,697,087 10/1972 Takahashi... 274/10 R 3,762,723 10/1973 Tourtellot 274/10 R  Foreign Application Priority Data Dec. 6 1971 Japan 46-98781 m 'l Dec. 6, 1971 Japan l l I i I I l l 4698782 Attorney, Agent, or Frrm-Wenderoth, Lind & Ponack Dec. 6, 1971 Japan 46-98783 Dec. 10, 1971 Japan 46-100393  ABSTRACT Dec. 10, 1971 Japan 46-100394 An automatic record p y capable of i i g DEC. 1 l, 1971 Japan 46-100482 various capabilities, essentially Comprises a 1971 Japan 15157w] tonearm, a turntable, a turntable drive system for ro- 1971 4155mm tating the turntable at a predetermined speed selected 1971 l6972w] by the setting of a speed control knob, an operational 1971 17075w] mode control including a control knob manually mov- Japan 461l7076w] able to any one of start, manual and stop positions and 1971 Japan 170mm] a record size selector for permitting the tonearm to be 1971 Japan 464 17O79w] brought to the lead-in groove of a record of a prede- 1971 170mm] termined diameter at the time of start of operation of 1971 japan'm 17083w] the record player. The automatic record player herein DEC. 8, 1971 Japan.... 46-1 l7084-[U] provided is manufactured a Substantial Dec. 8, 1971 Japan 46-117085[U] duction of the costs in manufacture  US. Cl 274/10 R 8 Claims, 36 Drawing Figures STOP MAN OFF START PATENIELHUVISIBH sum uanr 3.848.875 I E5 to 5% at 1 PATENTE uuv 1 91974 sum on HF 17 VGFm PATENIE rm 1 91.974
SHEET "08 0F 17 FIG/l5 PATENTEL NOV 1 91874 sum 12 or 1T PATENIE SUV 1 9 I974 sum 1% aw r11 PATENIE rm 1 91974 848,875
sum 15 0F 1? WT L '|L I 7 8 r STOP MAN OFF START FIG. /9
PATENTE as; 1 91974 sum is or 17 \N @Fm AUTOMATIC RECORD PLAYER The present invention relates to an automatic record player and has for its object to provide an automatic record player having the following various capabilities:
1. Automatic individual performance of a plurality of records mounted on the multi-play turntable spindle in a stacked arrangement. In this case, only by setting the control knob to the START position, the various movable mechanisms of the record player can be set in operation and, after the last one of the stacked records has been played out, automatically return to their respective initial positions with the power source switched off.
2. Manual shift of the tonearm to the lead-in groove of the record on the turntable. In this case, only by setting the control knob to the MAN position, the tonearm can be conditioned so as to be manually shifted to anywhere on the record on the turntable and, after the record has been played out, the movable mechanisms of the record player can be automatically returned to their respective initial positions with the power source switched off.
3. Rejection of the record being played without permitting the next one of the stacked records to be fed down the multi-play turntable spindle on to the rotating turntable.
4. Interchangeability of the turntable spindle with any one of the multi-play turntable spindle and singleplay turntable spindle.
5. Manual vertical shift of the tonearm shifting structure. This is possible by the provision of the cuing device. By operating the cuing device, the tonearm can be vertically shifted with the pickup stylus clearing the record and automatically, slowly returned to the downwardly shifted position.
These and other objects and features of the present invention will become apparent from the following description taken in conjunction with preferred embodiments thereof shown in the accompanying drawings, in
FIG. 1 is a schematic perspective view of a record player with the multi-play turntable spindle constructed in accordance with the present invention,
FIG. 2 is a top plan view of the arrangement of various mechanisms of the record player, with a mounting panel removed,
FIG. 3 is a schematic side view of the record player shown in FIG. 1,
FIG. 4 is a schematic longitudinal sectional view of a tonearm lifting structure combined with a cuing device, both being employed in the record player of FIG.
FIG. 5(A) is a top plan view of a portion of the idler wheel and its support employed in the record player of FIG. 1,
FIG. 5(B) is a side sectional view of the structure of FIG. 5(A),
FIG. 6(A) is a schematic top plan view of a record size selecting control, showing the selector knob positioned at the position,
FIG. 6(B) is a similar view to FIG. 6(A), showing the selector knob positioned at the 12" position,
FIG. 6(C) is a similar view to FIG. 6(A), showing the selector knob positioned at the 7" position.
FIG. 7 is a top plan view of a portion of the arrangement of the various mechanisms of the record player, with the mounting panel and a base plate removed,
FIG. 8 is a schematic diagram showing a portion of a tonearm shifting device,
FIG. 9(A) is a schematic diagram showing the arrangement of a transmission lever and a rejection link with the drive plate moved to one position,
FIG. 9(B) is a schematic side view of the arrangement of FIG. 9(A),
FIG. 10(A) is a similar diagram to FIG. 9(A), showing the transmission lever and the rejection link with the drive plate being moved towards the opposite position,
FIG. 10(B) is a schematic side view of the arrangement of FIG. 10(A),
FIGS. 11(A) and 11(B) are a schematic top plan view and side view, respectively, of a portion of a turntable spindle drive mechanism, showing the condition wherein the stacked records are supported above the turntable,
FIGS. 12(A) and 12(B) are similar views to FIGS. 11(A) and 11(B), showing the condition wherein the lowermost one of the stacked records is being fed on to the turntable,
FIGS. 13(A) and 13(3) are similar views to FIGS. 11(A) and 11(B), showing the condition wherein the downward shift of the inner shaft of the turntable spindle is obstructed by a barrier plate,
FIGS. 14(A), 14(B) and 14(C) are schematic diagrams showing a top plate in various sequential operation positions,
FIG. 15 is a similar view to FIG. 2, showing a portion of the arrangement in detail,
FIG. 16 shows the portion of FIG. 15 actuated when the control knob is moved to the START position,
FIG. 17 shows the portion of FIG. 15 actuated when the control knob is moved either to the MAN position or to the STOP position,
FIGS. 18(A) and 18(B) are a schematic top plan view and side view, respectively, of a portion of the turntable spindle drive mechanism showing the condition wherein the single-play turntable spindle is employed,
FIG. 19 is a similar view to FIG. 2, but showing another preferred embodiment of the present invention,
FIG. 20 is a diagram showing a portion of FIG. 19 actuated when the control knob is moved to the START position,
FIG. 21 is a diagram showing the portion of FIG. 19 actuated when the control knob is moved to the MAN position,
FIGS. 22 and FIG. 23 are schematic diagrams showing the stop plate in different postures, and
FIGS. 24(A) and 24(3) are schematic diagrams of a modified cam member, respectively showing the tonearm shifting device in different operative positions.
Referring to FIGS. 1 to 3, a base plate 3 fixedly suspended from the undersurface of a mounting panel 1 by means of a plurality of suitable fixtures 2 spacing said base plate 3 from said undersurface of said mounting panel 1 rigidly carries a sleeve 5 upwardly extending therefrom through the mounting panel 1. This sleeve 5 has mounted therearound a thrust ball bearing 4 and rotatably carries a turntable 7 having a downwardly extending geared collar 6 secured to or integrally formed with said turntable in alignment with the center of said turntable and with the longitudinal axis of said sleeve 5. The thrust ball bearing 4 is, when the turntable 7 is mounted on said sleeve 5, sandwiched between the base plate 1 and the lowermost end face of the geared collar 6 for permitting the geared collar 6 and, hence, the turntable 7 to undergo a smooth rotation about the longitudinal axis of said sleeve 5.
The gear collar 6 has integrally formed thereon a projection 6a extending at right angles to the longitudinal axis of said collar 6, the function of which projection 6a will be mentioned later.
The turntable 7 can be rotated in one predetermined direction by a suitable electric motor (not shown) having a drive shaft rigidly connected with or integrally formed into a capstan 10 of any known construction having a plurality of, for example, three, different diameter portions 10a, 10b and 100, as seen in FIG. B, the rotational force of said motor being transmitted to said turntable 7 in any known manner through a selected one of said different diameter portions a, 10b and 100 of said capstan 10 via an idler wheel 9 selectively engageable with the peripheral flange of the turntable7 and said capstan 10. The idler wheel 9 is mechanically connected with a speed selector knob 119 through a turntable rotating speed control (not shown) of any known construction such that, depending upon the positioning of the speed selector knob 119 to any one of 33%, 45 and 78 positions which respectively stand for the conventionally standardized speeds of rothe turntable 7 to be rotated at a preselected speed.
The turntable rotating speed control may be of any known construction, for example such as disclosed in the US. Pat. No. 3,549,153 patented on Dec. 22, 1970. However, according to the present invention, the linkage between the idler wheel 9 and the speed control is modified as'shown in FIGS. 5(A) and (B) thereby to permit the height of the idler wheel 9 to be manually adjustable with respect to any one of the different diameter portions 10a, 10b and 10c of the capstan 10. The linkage so far shown in FIGS. 5(A) and (B) comprises a first arm member 8 suitably pivotally carried by the mounting panel 1 and having one end slidably engaged with the caming structure (not shown) of the speed control and the other end formed with a threaded hole 8a and a bearing hole 8b adjacent to said threaded hole 8a. This first arm member 8 carries an adjustment screw 108 adjustably threaded into the threaded hole 8a of the arm member 8 and said adjustment screw 108 has integrally formed thereon a large diameter portion 108a adjacent to the head portion thereof, which has a diameter greater than that of the head portion of said screw 108.
A second arm member 109 has one end portion formed with an opening (not shown) of a diameter slightly greater than that of the head portion of the adjustment screw 108, but smaller than that of the large diameter portion 108a thereof, through which opening the head portion of the adjustment screw 108 extends with the end portion of said second arm member 109 resting on the large diameter portion 108a. Adjacent to this opening, the second arm member 109 is provided with a downwardly extending pin member inserted in the bearing hole 8b of the first arm member 8 thereby to support the second arm member 109 in position. However, for preventing a possible separation of the second arm member 109 from the adjustment screw 108, the end portion of the arm member 109 adjacent to the opening is held in position by means of suitable fastening members, such as a snap ring 112 and a spring washer 111.
The idler wheel 9 is rotatably mounted on a shaft 18 which is in turn rigidly secured to a third arm member pivotally carried by the second arm member 109. The pivotal connection between the second and third arm members 109 and 130 may be omitted if the fulcrum about which the first arm member 8 pivots is provided such that the idler wheel 9 can contact any one of the different diameter portions 10a, 10b and 10c of the capstan l0 and also the peripheral flange of the turntable 7 thereby to transmit the rotational force from said capstan 10 to said turntable 7.
From the foregoing, it has now become clear that, by turning the adjustment screw 108 in either direction, the height of the idler wheel 9 with respect to the capstan 10 can be varied.
It is to be noted that the idle wheel 9 is urged to contact both the capstan l0 and the peripheral flange of the turntable 7 by the action of a tension spring 9a.
A main gear 12 is rotatably mounted on a shaft 11 rigidly upwardly extending from the base plate 3. This main gear 12 has formed on its upper surface a link axle 13 on which a link boss 14 is rotatably mounted. The link boss 14 carries a friction link 17 rigidly secured thereto, on an upper portion of which a friction lever 15 and an actuating link 16 are relatively rotatably mounted. A tension spring 19 is disposed between said friction lever 15 and actuating link 16 so as to bias said lever 15 and link 16 in the opposite directions. However, since the friction lever 15 is, while relatively pulled by said spring 19, abutted against a stopper 16a formed in the actuating link 16, the pulling force of the spring 19 is transmitted to the boss 14 through said fn'ction lever 15 and also through said actuating link 16 whereby friction is imparted between said actuating link 16 and said friction link 17 through said link boss 14.
It is to be noted that rotation of the actuating link 16 is through a predetermine angular distance defined by a cut-outportion 160, formed in said link 16, in cooperation with a stopper pin 12e formed in the gear 12 and situated within said cut-out portion 16c of said actuating link 16. Another cut-out portion may be formed in the actuating link 16 as at 16d for restricting unnecessary rotation of the friction link 17 relative to the actuating link 16, in cooperation with a bent edge 17a formed in said link 17 and situated within said other cut-out portion.
In any event, the actuating link 16 and friction link 17 may be a one-piece construction in which case, the
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3625521 *||Nov 12, 1969||Dec 7, 1971||Plessey Co Ltd||Record-changer gramophones|
|US3697087 *||Nov 12, 1969||Oct 10, 1972||Pioneer Electronic Corp||Automatic record player|
|US3762723 *||May 11, 1970||Oct 2, 1973||Rca Corp||Automatic record changer|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4023813 *||Jan 12, 1976||May 17, 1977||James T. Dennis||Automatic record changer with cycle delay to facilitate changing of thin, lightweight records|
|US4046385 *||Dec 10, 1975||Sep 6, 1977||Plessey Handel Und Investments Ag||Record players|
|US4320494 *||Mar 12, 1979||Mar 16, 1982||Dual Gebruder Steidinger Gmbh & Co.||Switch device for a turntable|
|US4348756 *||Feb 5, 1981||Sep 7, 1982||U.S. Philips Corporation||Record player control mechanism|
|US7302982 *||Nov 26, 2003||Dec 4, 2007||Avery Dennison Corporation||Label applicator and system|
|EP0033991A2 *||Jan 29, 1981||Aug 19, 1981||Philips Electronics N.V.||Record player|
|U.S. Classification||369/203, 369/245, 369/206|