US1274581A - Brake mechanism for talking-machines. - Google Patents

Description

M. NYSTROM.

BRAKE MECHANISM FOR TALKING MACHINES.

APPLICATION FILED AUIG.23. 1911.

' 1,274,581. Patented Aug. 6, 1918.

UNITED swir s PATENT carton.

MARTIN NYSTROM, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BRUNSWICK-BALKE- COLLENDER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

BRAKE MECHANISM FOR TALKING-MACHINES.

Specification of Letters Patent.

Patented Aug. 6, 1918.

Application filed August 23, 1917. Serial No. 187,746.

and has for its primary object the provisionof a brake mechanism for automatically stopping the record table when the reproduction has been completed.

A further object of my invention is the provisionof abrake mechanism as above described which may be manually set to disengage the record table and either manually or automatically released, as desired.

Further objects and advantages of my invention will be apparent as it is better understood by reference to the followingspecification when read in connection with the accompanying drawing, illustrating'the preferred embodiment thereof, in which Figure 1 is a plan view of a talking machine with my improved brake mechanism applied thereto;

Fig. 2 is a side elevation, partially in section, of the structure illustrated in Fig. 1;

Fig. 3 is an enlarged detail in perspective of the brake and latch therefor, and

Fig. 4 is a detail in section illustrating the pivot of the latch lever.

Referring to the drawing, 5 indicates a casing orsupport upon which the record table 6 is rotatablv. mounted to support the record 7. The table (3 is driven by suitable mechanism well-known in the art and therefore not illustrated and is preferably provided .with a depending flange 8. A tone arm 9 is supported in movable relation to the sound amplifier 10 and is provided with a sound box 11 carrying a stylus 12 adapted to cooperate with the record 7 in a wellknown manner to reproduce sounds recorded on the record.

A plate 13 is secured to the upper surface of the support 5 bcneaththc table 6. Pivotally mo uted at 14 on the plate 13 is a brake 15 having a manually operable handle 16 projecting beyond the periphery of the table 6 and an arm 17 carrying friction material 18 adapted to coiiperate with the inner face of the depending flange 8 to prevent rotation of the table 6 when the friction material is in engagement with the flange.

The brake 15 is provided adjacent its pivot 14; with an abutment 19. A lever 20 is pivotally mounted on a stud 21 at about themiddle of the plate 13. As will be seen by reference to Fig. 41 the stud 21 is fast to the plate 13 and a washer 22 is disposed between the plate and the lever 20; Thus the lever is lifted slightly from the plate 13 to prevent frictional engagement between the parts which might retard the rapid opera tion of the lever or increase the resistance to actuation thereof. Movement of the lever 20 .is limited at one end by a stud 23 and at the other by a stud 24 and a keeper 25 on theplate 13.

The end of the lever 20 adjacent the brake 15 is provided with a toe 26 adapted to engage the abutment 19 and hold the brake 1,5 in inoperative position with the friction material 18 disengaged from the flan e 8. A. spring 27 connects the stud 28 on the lever 20 to a stud 29 on the brake 15 and tends to return the brake tp its normal position with the friction material 18 in engagement with the flange 8. The brake 15 is provided with a cam surface 30 which engages a heel 31 011 the end of the lever 20 opposite the toe 19. \Vhen the brake is moved to inoperative position the cam surface 30 thereon engages the heel 31 and positively actuates the lever 20 abutment '19.

A collar 32. on the tone arm 9 pivotally supports a member 33 having an operating handle 34 and :1 depending arm 35 which is adapted to contact with the tail 36 of the lever 20 when the tone arm is moved to the position indicated in dotted lines in Fig. 1 or when the reproduction is completed.

to move the toe 26 into engagement with the The lever 20 is thus swun about its ivot pending arm 35 engages the tail 36 of the lever.

The brake may be manually movedv to operative position when desired Without Waiting for the automatic disengagement of the toe 26 from the upright 19 by grasping the handle 16 and swinging the brake in a clockwise direction, viewing Fig. 1. The abutment 19 Will cause the lever 20- to swing in an anti-clockwise direction until the toe 26 is disengaged therefrom.

From the foregoing it will be readily understood that I have perfected a brake mechanism for talking'machines Which embodies relatively few and simple parts of inexpensive construction. My improved brake. mechanism is adapted to accomplish the desired. function of automatically stopping the talking machine at the conclusion of the reproduction. and is manually ope-i able to either operative or inoperative position It will be further understood that various changes may be made in the form, construe tion and arrangen'ient of the parts Without departing from the spirit and scope it the invention or sacrificing any of its i'naterial advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. In a mechanismot the charm-tor described, the combination of a pivoted brake adapted to engage a moving part 01" a, tall;- ing machine and having an abutment there-- on, an elongated pivoted lever luwinp: ates at one end adapted to engage said almtn'uuit, to hold said brake in inoperative position, a spring connecting said brake and lever and tending to move said brake to operative position when said'toe is disengaged from said abutment, adjustable means moving with the tone arm of the talking machine and adapted to engage and actuate the other end of said lever, and a heel on said lever opposite said too and disposed in the path of: movement of Said brake as the latter is moved to inoperative position to positively move said lever to engage said toe with said abutment.

2. In amechanism of. the character de scribed, the combination of a plate, a brake lever pivoted thereon and having an operating arm, ane arm carrying t'rietiou means adapted to engage a moving part of a tallo ing machine and an abutment adjacent its pivot, an elongated lever pivoted on said plate and spaced there'lrom to prevent trio 'tioual engagement therewith, a toe on one end of said lever adapted to engage said ahuin'ient, a spring connected to said brake on the side of its pivot opposite lid abutment and to said lever, and mljmstablemeans moving), with the tone arm of the talking machine and adapted to engu and actuate the other end of said lever to disengage said tee from said.almtment.

in a mechanism of the character described, the combination ol a plate, a, brake lever pivoted thereon and having an operating arm, an arm carrying friction means adapted to engage a moving part of a tall;- ing' machine and an abutment adjacent i;s pivot, an elongated lever pivot-ed on said plate and space-fl therefrom to prevent frictioiial enga 'ement. therewith, a. toe on one 1 end of said lever adapted to engage said abutment, a spring connected to said brake on the side of its pivot opposite said abutment and to said lever, adjustable means moving with the lone arm of the talking machine and adapted to engage and actuate the other end of said lever to disengage said too lrom said abutment, and a heel on said lever opposite said toe and disposed in the path cl movement of said brake as the latter isv moved to inoperative posi ion to positively move said lever to en ge said too with said abutmen In a ll'ZGClltll'llrllll of the character de- .;'-:cril ed, the eombimition olfa, plate, a brake lever pivoted thereon and having: an operating arm, an arm carrying friction means mingled to engage a moving part of a tall inn; machine. and'an abutmei'it adjacent the pivot, a single elongated lever pivoted on Id plate and spaced lluire'l rom to prevent riclional ciunihemont therewith, a keeper on said plate embracing said lever to limit movement thercot, a stud on said brake opposite said abutment, a rorrespomlii'ig stud on said lever, a spring cmmocted to said studs, a. toe on one end of said lever adapted to engage said abutment, and adjustable mezmsmoviugr with the tone arm of the talking machine and adapted to engage and actuate the other end of said lever to disensaid toe from said abutment.

h llilillil NYEVIRUM.

Witnesses J. U. ANDREWS,

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