US1268121A - Stopping attachment for talking-machines. - Google Patents

Description

H. HUBBELL.

STOPPING ATTACHMENT FOR TALKING MACHINES.

APPLICATION man JUNE 21. 1916.

1%68, 121 I Patented June 4, 1918.

1 III 70,,

WITNESS INVENTOR 1 A "I Q A TTOR/VE V HARVEY H'U'IBBETJL, QF BEIDGEPOBT, CONNECTICUT.

STOPPLENG ATTACHMENT FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented June a, T918.

a lication filed June 21, me. s mi to. 106,188. 7

To all whom it may concern:

Be it known that I, HARVEY HUBBELL, a citizen of the United States, residing at Bridgeport, county of Fairfield, State of Connecticut, have invented an Improvement in Stopping Attachments for Talking-Machines, of which the following 1s a speclfication.

This invention has for its ob ect to pro vide a simple and inexpensive stopping attachment adapted to be secured to the top of the case of any talking machine, which may be set to stop the rotation of the turntable at the end of a record or after a half or any other portion of a record has been played by the movement of the tone arm and without appreciable resistance to the tone arm.

With this end in view I have devised the novel attachment which I will now describe, referring to the accompanying drawing forming a part of this specification an using reference characters to intimate the several parts;

Figure 1 is a plan view of a talking machine with my novel attachment in place thereon, the tone arm and sound box being out of operative position;

Fig. 2 a similar view showing the manner in which the tone arm cooperates with the stopping attachment in setting the latter;

Fig. 3 a plan view of the attachment on i an enlarged scale;

Fig. 4 a section on the line 4-4 in Fig. 3, looking in the direction of the arrows;

Fig. 5 a section on the line 5-5 in Fig. 3, looking in the direction of the arrows, and

Fig. 6 is a section on the lme 6-6 1n Fig. 3, looking in the directlon of the arrows.

10 denotes the case of a talking machine, 11 the turntable, 12 a record thereon, 13 the tone arm, which swings in the hor zontal plane, and 14 the sound box, whlch 1s p1voted to the free end of the tone arm to swing in the vertical plane. These parts may be of any ordinary or preferred construction, my

present attachment being equally adapted to all machines using a swinging tone arm.

My novel attachment comprises essentially a plate 15, a brake lever 16, a brake shoe 17, an operating member 18 and a stopping arm 19. T e plate is provided with holes to receive screws by which it is attached to the case and with upturned lugs 20 -which are set in'close relation to the edge of the turntable and act as guides to prop-' erly aline the plate in attaching it in lace. The brake shoe is provided with a friction facing 21 adapted to bear against the edge of the turntable and is pivoted to one arm of the brake lever. This lever is in general form a bell crank lever, one arm being longer than the other and the brake shoe being pivoted to the outer end of the long arm. The short arm of this lever is pivoted to swin on a pin 22 extending upward from the p late. I have shown the brake lever as blanked out and formed from sheet metal and the short arm as made U-shaped in order to give a double bearing on the pin and insure steadiness of movements The operating member is likewise blanked out and formed from sheet metal, is made substantially U-shaped, and is adapted to oscillate on a pin 23 extending upward from the plate. The operating member is provided with an arm 24: having near its end a slot 25 which is engaged by a pin 26 extending u ward from the brake lever. Oscillation o the operating member will cause the brake shoeto be swung toward or from the edge of the turntable. As seen in the draw-- ing, the turntable rotates from left to right. It is important to note that neither the tone arm nor the action of a spring is depended upon to stop the rotation of the turntable. The tone arm simply places the brake shoe in engagement with the turntable. The instant this'engagement takes place the turntable itself causes the brake shoe to produce a wedging action. This is owing to the fact that the pivotal points of the operating member and of the brake shoe to the operating lever are on opposite sides of the general longitudinal line of the short arm of the lever, which if extended would intersect, or approximately intersect, the pivotal points of the operating lever and the turntable. The instant the brake shoe is caused to engage the edge of the turntable, the friction of the turntable on the brake shoe will carry the latter in the direction in which the wedging action which immediately stops the .rotation of the turntable. In other words, the action of the operating member upon the brake lever is not depended upon to stop the rotation of the turntable, the function of the operatin member being s1mply to oscillate the brake lever sufiiciently to place the brake shoe in en a ement with. the turn-- table, after which it 1s the action of the turntable on the brake shoe in car 1n t forward in the direction in who t e turntable is rotating that stops the rotation of tional engagement between the stopping arm and the operating member is provided to cause the stopping arm, when engaged by the tone arm, to oscillate the operating member, said member in turn swinging the brake lever and causing en agement of the brake shoe with the turnta le. The outer end of the stopping arm is suitably shaped to adapt it for engagement by; the tone arm. In the present instance I ave shown the outer end of the tone arm as reduced in width and bent to form a coil. It should be understood, however, that the special design or configuration of the several members is' wholly immaterial so far as the principle of the invention is concerned.

The operation is as follows: Fig. 1 shows the normal or inoperative position of the parts with a record upon the turntable ready to be played. To set the stopping attachment the operator swings the sound box over mto operative position and then swings the tone arm inward, as in .Fig. 2, until the needle will register with'the groove in the record near its inner end, if it is desired to lay the entire record, or with the mid llmgth or any other portion of the groove if 'it is not desired to play the entire record.

As the tone arm is swung inward, it picks up the stopping arm of the attachment and car-,-

ries it with it as far inward as the tone arm is moved. The operator then swings 'the tone arm away from the stopping arm, leavin the latter set. The tone arm is then set wit the needle near the outer end of the groove in the record in the usual manner. The tone arm as it swings inward in playing the recor moves toward the stopping arm, picks up the latter and carries it forward with it. The degree of frictional engagement of the stopping arm with the operating member is of course determined by comprisin adjustment of the wing nut. It must be suf- 1. A stoppingattachment for talking ma- 1 chines having a turntable and a tone arm, a bell crank brake lever having long and s ort arms and ivoted to swing on its short arm, a brakes oe pivoted to the free end of sald lever and adapted to contact with the turntable, an pperating member having pivotal connection with the brake lever, and a stopping arm having frictional connection with the operating member and a ,head in the path of movement of the tone arm, the pivotal points of the o crating member and of the brake shoe to t e brake lever lying on opposite sides of a line longitudinal to the s ort arm of said lever, substantially as described, for the purpose set forth,

2. An attachment of the character described, comprisin a bell crank brake lever having long and s ort arms and pivoted to swing on its short arm, a concave brake shoe pivoted to the long arm of said lever, and

an operatin member having pivotal connection 'wlth said lever, the pivotal points of the operating member and of the brake shoe to the brake lever lying on opposite sides of a line longitudinal to the short arm of said lever, so that actuation of the operating member will cause the brake shoe to engage the edge of a turntable after which the turntable will carry the shoe forward and produce a wedgin action.

3. An attac ment of the character de-.

scribed, comprisin a bell crank brake lever having long and s ort arms and pivoted to swing on its short arm, a brake shoe pivoted to the long arm ofsaid lever, an operating member having pivotal connection with the a brake lever, the ivotal points of theoperating member. and of the brake shoe to the brake lever lying on opposite sides of a line longitudinal to the short arm of said lever, and a stopping arm adapted to be engaged by a tone arm and to be moved independently of the operating member, but normally oscillating said member by frictional engagement.

be engaged by a tone arm.

member and of the brake shoe to the brake lever lying on opposite sides of a linelongitudinal to the pivoted arm of said lever.

5. An attachment of the character described, comprising a bell crank brake lever pivoted to swing on one arm, a brake shoe pivoted to the other arm and adapted to contact with a turntable, an operating member having pivotal connection with the brake lever, the pivotal points of the operating member and of the brake shoe to the brake lever lying on opposite sides of a line longitudinal to the pivoted arm of said lever, and a stopping arm having frictional connection with the operating member and adapted to 6. An attachment of the character described, comprising a bell crank brake lever pivoted to swing on one arm, an elongated concave brake shoe pivoted to the other arm and an operating member having pivotal connection with the brake lever, the pivotal points of the operating member and of the brake shoe to the brake lever lying on oppositesides of a line longitudinal to the pivoted arm of said lever.

7 An attachment of the character described, comprising a bell crank brake lever pivoted to swing on one arm, an elongated concave brake shoe pivoted to the other arm, an operating member having pivotal connection with the brake lever, the pivotal points of the operating member and of the brake shoe to the brake lever lying on opposite sides of a line longitudinal to the pivoted arm of said lever, and a stopping arm having frictional connection with the op-' erating member, and a head in the path of movement of the tone arm, whereby the brake shoe is caused to engage a turntable and continued movement of the turntable will carry the shoe forward and stop rotation of the turntable by a wedging action.

In testimony whereof I aflix my signature.

HARVEY HUBBELL.

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