US3848875A - Automatic record player - Google Patents
Automatic record player Download PDFInfo
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- US3848875A US3848875A US00310708A US31070872A US3848875A US 3848875 A US3848875 A US 3848875A US 00310708 A US00310708 A US 00310708A US 31070872 A US31070872 A US 31070872A US 3848875 A US3848875 A US 3848875A
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- 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
Definitions
- 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.
- 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:
- 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.
- FIGS. 24(A) and 24(3) are schematic diagrams of a modified cam member, respectively showing the tonearm shifting device in different operative positions.
- 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.
- a suitable electric motor not shown
- 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 engage
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- actuating link 16 and friction link 17 may be a one-piece construction in which case, the
Abstract
An automatic record player capable of functioning with various capabilities, which essentially comprises a tonearm, a turntable, a turntable drive system for rotating the turntable at a predetermined speed selected by the setting of a speed control knob, an operational mode control including a control knob manually movable to any one of start, manual and stop positions and a record size selector for permitting the tonearm to be brought to the lead-in groove of a record of a predetermined diameter at the time of start of operation of the record player. The automatic record player herein provided is easily manufactured with a substantial reduction of the costs in manufacture.
Description
United States Patent 1191 Miyoshi Nov. 19, 1974 1 AUTOMATIC RECORD PLAYER [51] Int. Cl. Gllb 17/08 [75] Inventor: Seizo Osaka Japan Fleld of Search 274/10 R [73] Assignee: Matsushita Electric Industrial Co.,
Ltd Osaka, Japan [56] 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 [30] 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 [57] 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 [52] 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
which;
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
Claims (8)
1. In an automatic record player, the combination which comprises a tonearm including a pickup stylus interchangeably carried thereby; a turntable; a turntable drive system comprising an electrical motor for rotating said turntable in one predetermined direction when said motor is operated; an operational mode control including a control knob manually movable to any one of start, manual and stop positions; an electrical switch for connecting a suitable power source to said motor; means rotatable between first and second positions and including a spring element for normally urging said rotatable means to said first position in which condition said switch is opened, said rotatable means being rotated to the second position when said control knob is moved either to the start position or to the stop or manual position to close said switch thereby to operate said motor; pivotable means rotatable together with said tonearm connected therewith by means of a tonearm shaft and having a projection; a drive plate reciprocatable and including a cam member rigidly carried thereby at one end thereof; transmission means for transmitting a rotational force of said turntable to said drive plate for causing said drive plate to move in one direction during a first portion of an operation of said transmission means; a lifting rod having a lower end slidably engaging said cam member and an upper end for supporting said tonearm and operable in such a manner that, when said drive plate is moved in said one direction, said lifting rod shifts said tonearm upwardly and, when said drive plate is moved in said opposite direction, said lifting rod is allowed to downwardly shift; a record size selector comprising a selector knob movable among first, second and third detent stop positions, that are respectively associated with standardized diameters of 7, 10 and 12 inches of commercially available records, and at least one positioning plate having stepped edges corresponding to said detent stop positions of said selector knob, said positioning plate being pivotable in response to the movement of said drive plate in said one direction thereby to permit any one of said stepped edges, selected by the setting of said selector knob to the corresponding one of the detent stop positions, to be positioned in the path of angular travel of said projection of said pivotable means for enabling the pickup stylus to be automatically engaged in the lead-in groove of a record to be played; a detector plate relatively slidably carried by said drive plate, said detector plate being movable together with said drive plate when said control knob is moved to the stop position past the manual position and capable of undergoing a relative motion with respect to said drive plate, when said control knob is moved to the start position, in such a way that, after said drive plate is moved in a predetermined distance in said one direction, said detector plate is held stationary and said drive plate is permitted to further move in said one direction, said detector plate including a spring element for urging said detector plate in one direction whereby, after said drive plate has been moved a predetermined distance is said opposite direction said detector plate commences to move together with said drive plate further moving in said opposite direction; escapement means operable, when the control knob is moved to the start position to cuase said transmission means to undergo one cycle of the operation thereof, to rotate the tonearm in one direction from the resting position to another position immediately above the lead-in groove of the record to be played in response to the relative motion of said detector plate with respect to said drive plate, said tonearm after having played said record being returned to the resting position by said escapement means when said drive plate is moved in said one direction during a subsequent cycle of operation of said transmission means caused upon entry of the pickup stylus in the lead-out groove of said record, said escapement means being operatively carried by said drive plate adjacent to said cam member and also operable, when the control knob is moved to the stop position past the manual position while the record is being played, to immediately return said tonearm to the resting position in response to the movement of said drive plate in said one direction caused through said transmission means by manually moving said control knob to said stop position; means for causing the relative motion between said detector plate and said drive plate only when said control knob is moved to said start position; means for locking said rotatable means in said second position when said rotatable means is rotated to said second position; and a stop plate carried by the detector plate and frictionally rotatable between first and second positions, said stop plate being normally maintained in the first position when the relative motion between the detector plate and the drive plate does not take place and rotated to the second position when said relative motion takes place, said stop plate in said second position being capable of engaging with said locking means upon completion of the movement of said drive plate in said opposite direction thereby permitting said switch to be turned off with said rotatable means rotated to said firSt position.
2. The record player as claimed in claim 1, wherein said lifting rod includes means for giving contact pressure to said pivotable means, when said lifting rod is in the upwardly lifted position with said lower end thereof sliding over said cam member, thereby to prevent said pivotable means and, hence, the tonearm, from fluttering during rotation thereof.
3. The record player as claimed in claim 1, wherein said lifting rod further includes an adjustment device for adjusting the height of the tonearm with respect to the plane of the turntable.
4. The record player as claimed in claim 1, wherein said turntable drive system further comprises an idler wheel, a capstan rigidly mounted on a drive shaft of said motor and having at least three different diameter portions and a speed selector knob manually movable among first, second and third detent positions which respectively correspond to said three different diameter portions of said capstan and represent the standardized speeds of 33 1/3 , 45 and 78 round per minute of rotation of the turntable, said idler wheel capable of being brought into an operative position by said rotatable means, when said control knob is moved either to the start position or to the manual or stop position, thereby to transmit the rotational force of said capstan to said turntable and brought back to an inoperative position when said rotatable means is rotated to said first position.
5. The record player as claimed in claim 4, wherein said idler wheel is provided with an adjustment device for manually adjusting the height of said idler wheel with respect to any one of said different diameter portions of said capstan.
6. The record player as claimed in claim 1, further comprising a cuing device for manually forcibly bringing the tonearm to the upwardly shifted position, said cuing device comprising a pivotably lever pivotable between operative and inoperative positions, a tension spring for urging said pivotable lever to said inoperative position a guide member having one end rigidly connected with the lifting rod, said pivotable lever having one end formed as a handle and the other end slidably engageable with the other end of said guide member whereby, only when said lever is manually pivoted to the operative position against the tension spring with said other end thereof lifting said guide member, the lifting rod is forcibly upwardly lifted and, when said lever is allowed to return to the inoperative position with said other end thereof separating from said guide member, said lifting rod is allowed to downwardly shift.
7. In an automatic record player, the combination which comprises a tonearm including a pickup stylus interchangeably carried thereby; a turntable; a turntable drive system comprising an electrical motor for rotating said turntable in one predetermined direction when said motor is operated; an operational mode control including a control knob manually movable to any one of start, manual and stop positions; an electrical switch for connecting a suitable power source to said motor; means rotatable between first and second positions and including a spring element for normally urging said rotatable means to said first position in which condition said switch is opened, said rotatable means being rotated to the second position when said control knob is moved either to the start position or to the stop or manual position to close said switch thereby to operate said motor; pivotable means rotatable together with said tonearm connected therewith by means of a tonearm shaft and having a projection; a drive plate reciprocable and including a cam member rigidly carried thereby at one end thereof; transmission means for transmitting a rotational force of said turntable to said drive plate for causing said drive plate to move in one direction during a first portion of an operation of said transmission means; a lifting rod having a lower end slidably engaging said cam member and an upper end for supporting said tonEarm and operable in such a manner that, when said drive plate is moved in said one direction, said lifting rod shifts said tonearm upwardly and, when said drive plate is moved in said opposite direction, said lifting rod is allowed to downwardly shift; a record size selector comprising a selector knob movable among first, second and third detent stop positions that are respectively associated with standardized diameters of 7, 10 and 12 inches of commercially available records, and at least one positioning plate having stepped edged corresponding to said detent stop positions of said selector knob, said positioning plate being pivotable in response to the movement of said drive plate in said one direction thereby to permit any one of said stepped edges, selected by the setting of said selector knob to the corresponding one of the detent stop positions, to be positioned in the path of angular travel of said projection of said pivotable means for enabling the pickup stylus to be automatically engaged in the lead-in groove of a record to be played; a detector plate relatively slidably carried by said drive plate, said detector plate being movable together with said drive plate when said control knob is moved to the stop position past the manual position and capable of undergoing a relative motion with respect to said drive plate, when said control knob is moved to the start position, in such a way that, after said drive plate is moved a predetermined distance in said one direction, said detector plate is held stationary and said drive plate is permitted to further move in said one direction, said detector plate including a spring element for urging said detector plate in one direction whereby, after said drive plate has been moved a predetermined distance in said opposite direction said detector plate commences to move together with said drive plate further moving in said opposite direction; escapement means operable, when the control knob is moved to the start position to cause said transmission means to undergo one cycle of the operation thereof, to rotate the tonearm in one direction from the resting position to another position immediately above the lead-in groove of the record to be played in response to the relative motion of said detector plate with respect to said drive plate, said tonearm after having played said record being returned to the resting position by said escapement means when said drive plate is moved in said one direction during a subsequent cycle of operation of said transmission means caused upon entry of the pickup stylus in the lead-out groove of said record, said escapement means being operatively carried by said drive plate adjacent to said cam member and also operable, when the control knob is moved to the stop position past the manual position while the record is being played, to immediately return said tonearm to the resting position in response to the movement of said drive plate in said one direction caused through said transmission means by manually moving said control knob to said stop position; means for causing the relative motion between said detector plate and said drive plate only when said control knob is moved to said start position; means for locking said rotatable means in said second position when said rotatable means is rotated to said second position; a stop plate carried by the detector plate and frictionally rotatable between first and second positions, said stop plate being normally maintained in the first position when the relative motion between the detector plate and the drive plate does not take place and rotated to the second position when said relative motion takes place, said stop plate in said second position being capable of engaging with said locking means upon completion of the movement of said drive plate in said opposite direction thereby permitting said switch to be turned off with said rotatable means rotated to said first position; a multi-play turntable spindle a tubular spindle housing a having a loWer end portion formed with an opening, an inner shaft having a lower end portion formed with first and second notches, the first one of which is in register with said opening when said inner shaft is upwardly shifted within said spindle housing, a primary support operatively carried by said inner shaft and operable in such a manner that, when said inner shaft is in the upwardly shifted position, said primary support comes into action to support a plurality of records to be played mounted on said turntable spindle and a secondary support operatively associated with said primary support and operable in such a manner that, when said primary support is withdrawn within said spindle housing, said secondary support comes into action to support the stack of records except for the lowermost one of them which is then permitted to fall down said turntable spindle on to the turntable; a spindle drive mechanism including a seesaw lever having one end pivotally connected with a fixed framework and the other end carrying thereon a record feeder, and at least one cam plate rigidly secured to the drive plate and having a substantially arched slot along which said other end of said seesaw lever is guided in response to the movement of the drive plate so as to selectively upwardly and downwardly shift said record feeder, said record feeder having a pivotable hooking member engageable in said second notch of said inner shaft during the downward movement of said record feeder thereby to forcibly lower the inner shaft whereby the lowermost one of the stacked record mounted on the turntable spindle is permitted to fall down said turntable spindle on to the turntable with said primary support withdrawn within said spindle housing and said second support in position to support the stacked records except for the lowermost one of them; and a barrier means for restricting the inner shaft from downwardly shifting when the control knob is moved to either the manual position or the stop position past the manual position while permitting the record feeder to undergo idle operation.
8. The record player as claimed in claim 7, wherein said record feeder includes an adjustment device for manually adjusting the positioning of the inner shaft within said spindle housing to ensure that, when said feeder is upwardly shifted, said inner shaft is upwardly shifted with the secondary support withdrawn within the spindle housing whereby insertion and removal of the records can be facilitated.
Applications Claiming Priority (17)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP46098783A JPS515924B2 (en) | 1971-12-06 | 1971-12-06 | |
| JP9878271A JPS5024602B2 (en) | 1971-12-06 | 1971-12-06 | |
| JP9878171A JPS503924B2 (en) | 1971-12-06 | 1971-12-06 | |
| JP11515871 | 1971-12-07 | ||
| JP11515771 | 1971-12-07 | ||
| JP11708371 | 1971-12-08 | ||
| JP11708271 | 1971-12-08 | ||
| JP11708471 | 1971-12-08 | ||
| JP11708571 | 1971-12-08 | ||
| JP11707871 | 1971-12-09 | ||
| JP11707671 | 1971-12-09 | ||
| JP11707971 | 1971-12-09 | ||
| JP11707571 | 1971-12-09 | ||
| JP10039471A JPS503922B2 (en) | 1971-12-10 | 1971-12-10 | |
| JP46100393A JPS503925B2 (en) | 1971-12-10 | 1971-12-10 | |
| JP10048271A JPS503923B2 (en) | 1971-12-11 | 1971-12-11 | |
| JP11697271 | 1971-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3848875A true US3848875A (en) | 1974-11-19 |
Family
ID=27585958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00310708A Expired - Lifetime US3848875A (en) | 1971-12-06 | 1972-11-30 | Automatic record player |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3848875A (en) |
| CA (1) | CA969871A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4023813A (en) * | 1976-01-12 | 1977-05-17 | James T. Dennis | Automatic record changer with cycle delay to facilitate changing of thin, lightweight records |
| US4046385A (en) * | 1974-12-18 | 1977-09-06 | Plessey Handel Und Investments Ag | Record players |
| EP0033991A2 (en) * | 1980-02-12 | 1981-08-19 | Koninklijke Philips Electronics N.V. | Record player |
| US4320494A (en) * | 1978-03-14 | 1982-03-16 | Dual Gebruder Steidinger Gmbh & Co. | Switch device for a turntable |
| US7302982B2 (en) * | 2001-04-11 | 2007-12-04 | Avery Dennison Corporation | Label applicator and system |
| US9741328B2 (en) * | 2015-01-14 | 2017-08-22 | Daniel J. Howington | Apparatus for varying the pitch of audible tones driven by a turntable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3625521A (en) * | 1968-11-12 | 1971-12-07 | Plessey Co Ltd | Record-changer gramophones |
| US3697087A (en) * | 1968-11-13 | 1972-10-10 | Pioneer Electronic Corp | Automatic record player |
| US3762723A (en) * | 1970-05-11 | 1973-10-02 | Rca Corp | Automatic record changer |
-
1972
- 1972-11-30 US US00310708A patent/US3848875A/en not_active Expired - Lifetime
- 1972-12-04 CA CA157,949A patent/CA969871A/en not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3625521A (en) * | 1968-11-12 | 1971-12-07 | Plessey Co Ltd | Record-changer gramophones |
| US3697087A (en) * | 1968-11-13 | 1972-10-10 | Pioneer Electronic Corp | Automatic record player |
| US3762723A (en) * | 1970-05-11 | 1973-10-02 | Rca Corp | Automatic record changer |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046385A (en) * | 1974-12-18 | 1977-09-06 | Plessey Handel Und Investments Ag | Record players |
| US4023813A (en) * | 1976-01-12 | 1977-05-17 | James T. Dennis | Automatic record changer with cycle delay to facilitate changing of thin, lightweight records |
| US4320494A (en) * | 1978-03-14 | 1982-03-16 | Dual Gebruder Steidinger Gmbh & Co. | Switch device for a turntable |
| EP0033991A2 (en) * | 1980-02-12 | 1981-08-19 | Koninklijke Philips Electronics N.V. | Record player |
| US4348756A (en) * | 1980-02-12 | 1982-09-07 | U.S. Philips Corporation | Record player control mechanism |
| EP0033991B1 (en) * | 1980-02-12 | 1983-05-25 | Koninklijke Philips Electronics N.V. | Record player |
| US7302982B2 (en) * | 2001-04-11 | 2007-12-04 | Avery Dennison Corporation | Label applicator and system |
| US9741328B2 (en) * | 2015-01-14 | 2017-08-22 | Daniel J. Howington | Apparatus for varying the pitch of audible tones driven by a turntable |
Also Published As
| Publication number | Publication date |
|---|---|
| CA969871A (en) | 1975-06-24 |
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