US1659847A - Stopping means adapted to talking machines - Google Patents

Description

Feb. 21, 1928.

E. N. WATERWORTH STOPPING MEANS ADAPTED T0 TALKING MACHINES Filed Aug. 23, 1926 w jmrm far V ENVWzZenuorZ/t Patented Feb. 21, 1928.

UNITE STATES 1,559, 42, PATE T! OFF Ems INEWHAM wamnnwon 'rn, or wEsTHoBART, TASMAN'IA, Ausrnenm.

s'rorrme Means ADAPTED :To TALKING MACHINES;

Application filed August'23, 1926, Serial Nb. 131,045,:and in Australia October 22,1925.

This invention has reference to talking mach nes of the disc' type and .jprov1des means for stopplnga turntable on which is a record in a self acting way after the record has been played. g

Inalready known stopping means, the

tone arm of the machine has been used, duringits movements across the record, to'actuate the stopping levers. In the present machine, while the movlng tone arm is employed to control certain .movements, its

function so far as stopping the movement of the record is concerned, is limited to prevent the brake beingapplicd until the movement of thetone arm ceases. by keeping sepa-rate in a positive way, except for a brushing contact at intervals, the brake operating parts while traversing the record, but when its movement ceases, then parts, that hitherto have been keptain motion, have their rotary movements converted into a rockingmovement, or rocking movements are inducechdirectly under the influ= ence of the machine motor'to tree the brake lever that is then applied to the turn table on which the record lies.

To this end a pivotal member .is intermittently moved into a turntable brake actuating :means, the means has time to operate, is withheld by the moving tone arm until the movement of the tone arm ceases, when thepivotal member is engaged by the actuating means and the machine motor operates parts to re-' tuate a wheel, called the pallet wheel, that at intervals in its rotary movements engages a lever, called the .pallet lever. The parts are so arranged that the rotary movement of the pallet wheel will be arrested by the pallet' lever only when the tone arm and stylus havecome to the end of the record. 7

V] hen this happens the power of the machine motor is applied to turn the pallet wheel and a plate upon which it is mounted, in an are about the motor spindle aXis. movement otthe whole operates mechanism to release the brake to permit of its application to the turntable. I

The tonearm connections are such that while the stylus is traversing the record ar restof the pallet wheel is rendered impossible. Itsinfluence upon the pallet lever This it does position to engage the' but before- The,

during this period is tokeep it"away from the pallet wheel except for the brushing contactaforesaid. This is effected in a simple and direct way from the tone armmounting by using a make and break pivot adapted to contact upon anwextension from a pivoted Z shaped lever actuated from the tone arm mounting such pivot being upon an extension from the pivotally mounted pallet lever, the make and break being governed from the .rotary movement of the pallet wheel.

, When the extension from the lever actuated from the tone farm mounting has been moved far enough "due to the movement across the record of the tone arm, say 'when the record has been about one third played, it will movea .lever that bestrides the spindle mounting the pallet lever. The latteris kept in a backward position by a tension spring secured to the :bes'triding lever and this spring must be relieved from duty in order to permit the arresting means to fu'ncQ v 'Fig. 2 is a perspective view of part of the pallet wheel and pallet lever and a lever that disconnects at intervals theton'e' arm connections and the pallet lever, and

Fig. 3 is a like view of pallet lever by means of which the spring that tends to remove. the pallet lever from the pallet wheel can be cutout of action;

At the base of the tone arm 4 an arm or bracket 5 is attached so as to move with the arm and on the'bracket is a plate 6 having a curved edge concentric with the tone arm axis. On this plate is a pin or post 7 and adjacent thereto a lever 8 is pivotally mounted at -9. Onthe forward end ofthe lever is a jaw 10 and at the head of same a depending lug 1 1 is-attached. In the drawing the of a leverpand part i tone arm is shown in position when the recin the jaw, provides tor a fair position as in the drawing. approach the lever is locked by the plate 6' But when the tone arm is at the beginning of the record the post 7 will be some dis tance from the jaw and will steadily approach-the same until the arm, comes to the During the and lug 11 that rests against the curved plate until the position indicated is reached the pallet wheel 15 on a spindle 16 mounted and supported in the plate 17 that pivots on the motor spindle 13. On the pallet wheel 15 is a post 18 and under the wheel 15 is another pin 19 that is set slightly in advance of the post 18. The plate 17 is retained inposition by the spring 20, against the post 2O" in the base plate 21. A rocking lever 22 is pivotally mounted in'the base vplate at 23 and one endot this lever comes under the pallet wheel while its other part passes under the pallet lever 24 and is turned up closely adjacent to a flat spring 25 secured to pallet lever. On the end of this spring is a knife edge 26 that contacts with the edge of the member 12.

The pallet lever 24 is shaped as a bell crank and pivoted at 27 and on its pivotal axis is fitted a bestriding lever j28 that is extended under the pallet lever and turned up to bear against its edge as shown in Fig. 8: it is attached to a spring 29 secured to the bed plate. bears against the inner edge of the member 12 that is inclined for the reason to be hereinafter explained.

On the other end of thepallet lever a rocking lever 30 is pivotally mounted and retained in position by a strong tension spring 31 against an adjustable stop 31. This lever comes at one end over the pallet wheel 15 and is fitted with two'members, one being a pallet formed'with inclined plane surface 32 and the other a tooth 33 that is adapted to engage the pin 18 on the pallet wheel. This is for thepurpose of arresting the movement of the pallet wheel when the progress of the tone arm ceases. I

On the platel'? is a pawl 34 that has an inclined surface in contact with a in 35 on the base plate and which is adapted to neatly engage in the tooth on a quadrant 36 pivotally mountedfat 37 the extension from which is a lever 38 that terminates in The back of this leverv 28 will slide over the inclined edge 48 and'be rocked by the spring to apply the brake 45 to the depending flange on the turn table 46. In operation, the handle 39 is first moved to the on position which sets the brake.

lever upon the quadrant 36, pawlfit bemg tor dle' each revolution, engage the inclining member torock the pallet-lever against the 13 and the enmeshing pallet wheel 15.

a s i ing the lever. Meanwhile, the playing 'o'f'the clear of the quadrant. The machine mo rotates the spur wheel 14 on the spine the wheel .15 rotates its pin 18 will, at

29 that afterwards reacts to' return.

record has commenced'and as the tone arm traverses the same and when it has advanced about one third across it,-the post 7 engages n the jaw 10 of the pivoted Z-lever 8 which immediately commences to move.

This causes the advancement of the tail piece 12 the inclining end of which contacts with the bestriding lever. 28 thus moving the' turned up end of the lever away from'the pallet lever and cutting out the influence of the spring29. This freed position of the pallet lever 24 in relation tov spring 29 is maintained until the playing of the record is finished and the tone arm is re-v turned to its initial position.

tervals to be drawn to the pallet Wheel. Just prior to this movement the pin 19 will con- F tact with the lever 22 to push same outwards to cause its other end to press against the spring 25 on wh ch the knife edge26 1s mounted and to withdraw the part 26--from the member 12, This permits the palet lever to be drawn in without putting The pallet lever is new :tree to move about its pivot and as the wheel 15 rotates' and the pin 18 engages, it'will continue at in llt) strain on member 12, and through it and V lever 8 to the delicate track of the record;

Meanwhile, the part 12 is advancing and on.

the return or the knife edge to its former -position it will engage the knurled edge of V 12 that will move the pallet lever outwards :trointhe pallet wheel. This rocking move:

ment of the pallet lever 24: continues with Y each revolution of the pallet wheel until the playing of the record is finished and' the tone arm has ceased to move.

At the next revolution of the pallet wheel the pin 18 engages the pallet lever member 32 as usual but owing to the member 12 be ing stationary the lever will not .be returned and on the next revolution of 15 :the pin '18 will engage the tooth '33 therebyFarresting the movement of thewheel 15 carried on the plate 17. When thisoccursthe plate 17 and wheel 15 are levered around the spindle 13 thus causingthe pawl 3A to come into sthe tooth on the quadrant 86 and to move it far enough to disengage the brake lever 42 from the quadrant. The spring 3L4 then reacts to apply the brake 45 to the turntable and'ithe lever handle 38 moves to the offposition. lVhen the plate 1? strikes the stop 47 the pressure of the pin 18, Which is still under the influence of the motor, and the momentum of the turntable causes the bell crank 30 to rock against the spring 31, when the pin 18 slips by the tooth and the plate 17 is returned by spring 20 to rest against the stop 20 Having now described my invention what I claim as new and desire to secure by Letters Patent is v 1. In stopping means in talking machines, a tone arm, a motor and brake releasing means, a pivotal member that is intermittently moved into a position to actuate means to release the brake and is withdrawn therefrom by the moving tone arm until its movement ceases when the pivotal member is held and the motor induces movements to release the brake.

2. In stopping means in talking machines, a tone arm, a motor and brake releasing means, a pallet wheel driven by the motor, a pallet lever that isengaged at intervals in brushing contact by the pallet wheel until the tone arm movement ceases when the pallet wheel becomes locked with the pallet 1 lever and the motor induces movements to 1 braking means is held until the locked parts are rocked by the motor.

4. In stopping means in talking machines, a pallet wheel rotated by a motor, a pallet lever that is kept separate from the pallet wheel (except for a brushing contact therewith at intervals) while a record is being played, a tone arm mounting, a pivoted lever and an extension thereon operated from said mounting and a make and break pivot fiexibly mounted upon the pallet lever and adapted to contact with extensions on said pivoted lever.

mounted upon the pallet lever adapted to contact with extension on said lever and wherein the pallet lever is left free to .be

moved in one direction by a brushing contact with the pin and in the opposite Way through the tone arm lever extensionand the :make and break pivot.

6. In stopping means in talking machines, a pallet lever, and another pin depending therefrom slightly in advance of the top pin, a tone arm mounting, a pivoted lever and an extension thereon operated from said mounting, a flat spring secured to the pallet lever, a make and break pivot on the spring adapted tovcontact with said lever extension, a rocking lever adapted to bear at one end on the inner side of the spring and at the other to be rocked by the depending pin on the pallet wheel as same rotates.

7 In stopping means in talking machines,

a pallet lever, a pallet Wheel, a motor on a spindle that drives said pallet wheel, a plate pivotally disposed on said spindle and mounting saidwheel, an upstanding pin on the Wheel, a rocking lever on the end of the pallet lever, an inclining pallet and a tooth on the forward end of the rocking lever, means whereby the pin shall engage the tooth only when the movement of the tone a pallet wheel, a pin thereon IOU arm ceases, a pawl on the plate, a toothed quadrant in which the pawl may engage and braking means retained on the quadrant and which are released when the quadrant is moved by the pawl.

8. In stopping means in talking machines,

a pallet lever, a pallet wheel, amotor driven spindle, a plate mounting said wheelpivotally disposed on said spindle, an upstanding pin on the pallet wheel, a rocking lever on the end of the pallet lever and an inclining pallet and a tooth on the end of the rocking lever, a tone arm mounting, a Z shaped pivoted lever having a curved base thereon actuated from the said tone arm mounting, a knurled edge on said base, a fiat spring secured to the pallet lever, a knife edge thereon adapted to contact with the lever extension, a rocking lever extending under the pallet wheel and the pallet lever, one end of which bears against the inner side of the flat spring, a pawl on the plate, a toothed quadrant in which the pawl may engage and braking means retained on the quadrant and which are released when the quadrant is moved by the pawl.

9. In a stopping means in a talking machine having a tone arm mounting and a Z shaped pivoted lever actuated from said mounting, a bracket on the mounting and bracket, a jaw to the lever thatis wider than the diameter of the post, a stop on the machine base plate and means for holding the lever against the stop until the post enters the jaw.

10. In stopping means in talking machines, a pallet lever, a pallet wheel, a motor on a spindle that drives said pallet wheel, an upstanding pin on the wheel, a rocking lever on the end of the pallet lever, an inclining pallet and a tooth on the forward end of the rocking lever, a tension spring that re Z plate, an inclined edge thereto near its outer end and a lever bestriding the pallet lever spindle attached at one end to the tension spring which lever as itcontacts with the inclined plane on the curved extension frees the pallet lever from the spring as the Z shaped lever is moved by thepost.

In testimony whereof I aflix my signature ERIC NEWHAM lVATF-RlVORTl-I.

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