US2265048A - Device for inverting record disks automatically - Google Patents

Description

2,265,048.A DEvIcE FoR INVERTING .REG0RD DISKSAUTOMATICALLY l l Filed sept 2f?, 1938 ateie .2, gd

nevica ron ma ancona nrsxs An'romarrcmr "rsurumcm mama, shammi-cho, Ryo. Ku, Tokyo, Japan Application September 27, 1938, Serial No. 231.868

En Japan January 17, 1938 6 C ti The present invention relates to a device of simple construction for inverting sound record disks automatically on the turntable of a reproducing machine such as a talking machine. Qne of its objects is to ensure the smooth operation of rst removing from the turntable and inverting record disks and then replacing the disks on said turntable without any possibility of damage to said disks. The other objects and the nature and advantages of this invention will appear more fully hereinafter as this specication proceeds.

In accordance with the invention the device comprises a member of approximately U-shape or horse-shoe shape mounted on a stationary axis for pivotal movement between a substantially horizontal position beneath the plane of the turntable and an upwardly inclined position 'above the turntable and by which the disk is removed from the turntable and supported during inversion, characterized by the provision ci a single semi-circular inverting arm pivotally attached at its ends to the side arms of the disksupporting member and adapted to be swung upwardly in a direction counter to that of said member while the latter is being raised so as to -pivot the disk between the side arms of said member.

The invention will become apparent from the following description ofv a constructional emhodixnent thereof, reference being had to the accompanying drawing, which shows a perspective view of the device mounted in position on the motorboard of a reproducing apparatus, parts being broken away to better reveal certain detail.

Referring now to the drawing, the nur neral l designates generally the element by which the disk is removed from and'replaced on the turntable and on which it is supportedwhile being inverted. This element consists of a substantially U-shaped or horse-shoe shaped memberl pivotally mounted at its closed end on a stationary spindle 2 and having its side arms so spaced that during operation the element not only can be swung freely between a substantially horizontal position beneath the plane of the turntable and an inclined position above the turntable but during said operation will engage beneath and lift the disk from the turntable and support it during the inverting operation.

Provided substantially centrally of each of the side arms of the member I and in a vertical plane passing approximately through the centre of the turntable is a depending lug or bracket 3 suitably formed integrally with said arms and extending from the inner edges thereof. Also formed integrally with one of the arms of the element i and located substantially vertically above the corresponding lug 3 is anupstanding lug 3. Fitted loosely within an. aperture in each of the lugs is a pivot pin d, the inner end of which is secured to one end of a semi-circular inverting arm 5, said arm thereby being free to turn about the axis t. d relative to the element I.

Secured to one of the pins t is a pinion 1 which meshes with the teeth 8 of a rack formed on the lower edge of a horizontally arranged link 8, the teeth of the rack being maintained in engagement with the pinion by means of va guide pin 6 secured to the lug 3' and against which the upper edge of the link 8 engages. The rear end of the link 3 is pivotally attached to one end of a lever S which is pivotally mounted intermediate its ends on a pin I0 suitably secured to a stationary part of the apparatus such as the motorboard. The other end of the lever 9 is maintained in contact with the circumferential face of a cam.- disk i2, fast on a shaft I3, by

means of a tension spring il, one end of which is attached to the arm. and the other `end to a stationary part of the apparatus.

As previously mentioned, the member i is mounted for pivotal movement on a xed axis and during operation it is rocked about its pivot firstly in an upward direction to lift the disk from the turntable, when the disk is inverted by the arm 5 as will hereinafter be described, and then lowered to its original position below vthe plane of the turntable to deposit the disk thereon with the hitherto lower` surface uppermost. This movement ofthe member i is controlled by a cam I@ also fast on the shaft I3 and located below the underface of the member I and adjacent the pivoted end thereof. Rotation of the shaft I3 and therefore of the cam It actuates a link system consisting of links it and Il connected together, link I6 being connected at one end to the motorboard at i8 and link Il connected at its outer end to the member I at I9 which links together operate said member.

Actuation of the member I may be effected in any convenient manner by causing rotation of shaft I3 and thus of cam Id which lifts link I6,

raising said member I, this operation being preferably automatically controlled from the motor driving the turntable through the intermediary of a clutch and lever mechanism (not shown) which connects the motor to the cam shaft I3 when the first side ofthe disk I5 on the turntable has been played.

'Ihe following is an explanation of the manner ci operating this invention:

When one side o! a disk IB has been played and the cam shaft I3 coupled to the motor I0 as above described, the cam. I4 through the link system I6, I1 causes the member I to swing upwardly about the spindle 2 and lift the disk ofi the turntable, the disk then resting at approximately diametrically opposed points on the side arms of said member. During this tilting movement of the member I the inner end of the disk, i. e. the portion of the disk am'acent the spindle 2 on which the member I is pivoted, tends to drop between the side arms of said member. At the same time the cam I2 causes the link 8 to move rearwardly (to the right in the drawing) thereby rotating the pinion I in a clockwise direction. This causes the arm which, in its normal position lies slightly below the plane of the member I, to swing upwardly about the pivot pins 4, 4 and engage the inner portion of the disk I5. concurrently with the continued upward pivotal movement oi' the member I under the action of the cam I4. the inverting arm 5 also'continues to swing upwardly under the action of the cam I2, the eiect being rthat while the inner end of the disk is raised more and more by the arm 5, its rear end drops downwardly between the side arms of the member I, the edge of the disk being supported by the inner edges of said side arms. The disk eventually reaches a vertical position, still being supported by the inner edges of the side arms of the member I, with a minor portion below and a major portion above said member and thereafter swings over by its own weight, fulcrumming about the points on said arms with which its edge is in contact. The disk continues its free swinging movement until it once again reaches a plane which is parallel to that of the member I, being"- with a rubber covering to prevent the arm dami aging the disks.

Having now fully describedmy invention, I claim:

1. A device for automatically inverting a record disk upon the turntable of a talking machine,

comprising a segmental and at least partly annular disk carrying arm disposed partly about the turntable and pivotally mounted upon said machine to swing upon a horizontal axis located exteriorly of a diameter of said turntable, an

arcuate inverting bar pivoted at both ends to spaced portions of said arm adjacent to substantially opposite portions of the turntable in lowered position of said arm, and means for raising said arm and also swinging said arcuate bar in an opposite direction to that of the swinging movement of the arm in order to turn a record upon said arm.

2. A device for automatically inverting a record disk upon the turntable of a talking machine, comprising a segmental and at least partly annular disk carrying arm disposed partly about the turntable and pivotally mounted upon said machine to swing upon a horizontal axis located exteriorly of a diameter of said turntable and having a pair o! spaced lugs on said arm which in lowered position o! said arm are located adiacent to^substantially opposite portions oi the turntable, an arcuate inverting'bar pivoted-at one end to one of said lugs and having a shai't ilxed to the other end and rotatably mounted in the other of said lugs, means for raising said ann and means for simultaneously swinging said arcuate bar in an opposite direction to thatot the swinging movement ot the arm in order to .having a pair of spaced lugs onsaid arm which in lowered position oi said arm are located adjacent to substantially opposite portions of the turntable, an arcuate inverting bar pivoted at one end to one of said lugs and having a shaft fixed to the other end and rotatably mounted in the other of said lugs, a pinion fixed on said shaft, a rack meshing with said pinion, projecting means on said arm maintaining said rack in mesh with said pinion in all positions of the arm,

means for raising said arm, and means for moving said rack longitudinally in lorder to swing said arcuate bar in an opposite direction to that of the swinging movement of the arm in order to turn a record upon said arm.

4. A device for automatically inverting a record disk -upon the turntable of a talking machine, comprising a segmental and at least partly annular disk carrying arm disposed partly about the turntable and pivotally mounted upon said machine to swing upon a horizontal axis located exteriorly of a diameter oi said turntable and having a pair of 'spaced lugs on s'aid arm which in lowered position of said arm are located adjacent to substantially opposite portions of the turntable, an arcuate inverting bar pivoted at one end to one of said lugs and having a shaft xed to the other end and rotatably mounted in the other of said lugs, a pinion ilxed on said shaft, a rack meshing with said pinion, projecting means on said arm maintaining said rack in mesh with said pinion in all positions oi the arm, means for raising said arm, including a driven cam shaft carrying a cam with an eccentric portion transmitting raising movement to the arm. a second cam ilxed upon said camshaft, a lever pivotally connected to one end of said rack and being itself swingably mounted in proximity to said second cam so that rotation of the latter with the camshaft and iirst cam will rock said lever and shift the rack longitudinally and thereby rotate the pinion and ultimately swing said arcuate bar in an opposite direction to that of the swinging movement of the arm in order to turn a record upon said arm, and means including a spring for retaining the lever in contact with said second cam.

5. A device for automatically inverting a sound record disk upon a turntable of a reproducing apparatus, comprising a record disk supporting member having a pair of spaced side arms giving said member an approximately U-shape or horse-shoe shape, said member being mounted fonmovement about a stationary horizontal axis from a substantially horizontal position beneath the plane of the turntable and an upwardly inclined position above the level of the turntable in order to remove the record disk from the turntable and support the same during inversion, a.

single substantially semi-circular inverting arm pivotaliy attached at its ends to the side arms of the record disc supporting member intermediate the ends of said side arms and the pivotal mounting of said record disk supporting member and adapted to be swung upwardly in a direction counter to that of the supporting member while the latter is being raised so as to pivot the disk' lo between the side arms thereof, and means for raising the supporting member and also swinging said inverting arm.

6. A device according to claim 5, wherein thesaid supporting member.

TSURUKICHI TSUCHIYA.

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