US1204860A - Universally-flexible brake. - Google Patents

Description

,W. F. GRUPE.

UNIVERSALLY FLEXIBLE BRAKE.

APPLICATION FILED FEB. 20. I915.

1 304,869, Patented Nov. 14, 1916.

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WILLIAM F. (morn, or JERSEY CITY, new JERSEY, assrcnon; BY mnsm'a assrcnmnn'rs, T vim-o-rnonn conrm, or NEW YORK, n. Y., .e. conrona'rron OF NEW YORK.

UNIVEBSALLY-FLEXIBLE BRAKE. I

Specification of Letters Patent.

Patented Nov. 14, 1916.

Application filed'liebruary 20, 1915. Serial No. 9,611.

-ful Improvements in Universally-Flexible Brakes, described morepartic'ularly herein andallustrated m the accompanying draw- ,ment of, my invention; Fig. 2 is-a detail side ing's in which.-

Figure 1 1s a plan -v1ew of one embodielevation of parts of Fig. 1, as viewed in the. direction of arrow 2; and Fig. 3 is a detail plan view on the line 33 of Fig. 2, and also showing a modification;

According to the drawings, the casing 1 of the phonograph or talking machine is of any construction. The turntable 2 shown mounted toward one side of the casing 1, is driven by suitable mechanism.' (not shown). The movable tone arm 3 carrying the sound box 4 is illustrated as oscillatably mounted toward the opposite end of the casing 1. e

The braking means comprises the follow; ing. The arm. 5, preferably carrying a friction pad (5, is actuated by the arm 7, whereby the turntable 2 is brought to rest upon movement of the movable tone arm 3 into a predetermined position, such as its non-playing position. 5 and the arm 7 are constructed as integrally connected to each other and preferably of resilient material. To effect the above relation of parts I have shown the projection 8 carried by the movable tone arm 3 and adapted, when the tone arm 3 is in non-playing position, to engage the hook end 9 of arm 7 and thereby move the friction pad 6 into braking position. The bar 5, 7, is shown carried by the stud 10 having the enlarged head 11 and stem 12 passing through the opening 13. The stud 13 is flexibly positioned by means of the resilient element 14; shown as a spring washer, and held in position relatively to the top wall of the casing 1 by means of the adplstable nut 15. Means are provided for biasing the brake means 5, 7, in such direction that the effective braking end or friction pad 6 is normally held rom engagement with the turntable 2. As an illustration thereof, I have shown the spring arm 16 engaging at its portion 17 againsta fixed part, such as the inner face of a wall Preferably the arm of easing 1, and having another portion 18 related to the stud 10, whereby stud 1O tends to twist in the desired rotational d rection to hold the arm 5 out of contact with the turntable :2. For sin'ipli city of as- ,sembly and construction the portion 18 proects through recesses of the washer 14 and.

through the slot 19 of the stud 10. The hook portion 9 of brake arm 7 is preferably provided with the abutment portion 20 adapted normally to engage the fixed collar or base 21 of the tone arm 3.

In accordance with the described specific construction, the eflective braking end or friction pad 6 will be thrown into engagement with the turntable .2 when the movable tone arm 3 is po itioned in its non-playing position, to wit, by means of the projection S and hook 9. 3 is moved out of its nonplaying position, the spring 16 forces the abutment portion 20 into engagement with the fixed collar 21, thereby moving the effective braking end or friction pad (3 out of contact with the. turntable 2. liponrelease ot' the turntable from the brake. the motor mechanism is permitted to drive the turntable under the speed conditions determined by the speed regulating means.

It will be noted that my invention results in a brake which is universally yieldable, that is, yieldable in all directions. Such construction is advantageous in reducing breakage of the'brake parts to a minimum. and is of particular value in reducingthe cost of breakage during assembly. The construction is also of value in that the assem adjustability of the parts does not require especial skill or repeated trials for attain ing the desired results. I

In a similar manner, the universally yieldable features of my invention, wholly or partly, operates to brake the rotating ele ment of the device when the tone arm, or other swinging member is in any predetermined position or positions other than the non-playing or non-operative position.- Such result may be attained, in a similar manner, by providing the stud or similar pivotal supporting means of the )rake proper, with an enlarged opening through which it passes and a resilient righting means similar to the spring washer, for

\Vhen the movable tone arm righting the stud to its normal operating position, inthe event that blows, shocks or the like he encountered by the brake proper. Other means'may be provided, similar to the spring 16 for normally holding the brake proper out of braking position.

Whereas I have described my invention by reference to specific forms thereof, it will be understood thatniany modifications and changes may be made without departing from the spirit ofmy invention. Thus'the slot in the stem 12 of stud 10 may be positherewith, a fixed base for said rotating element andsaid swinging element, a brake controlling said rotating element when said swinging element is in a predetermined position, a stud passing'through an opening in saidflfixed base supporting said brake, the dimension vofsaid opening in a certain difrecti'on being greater than the corresponding dimensionof said supporting stud, a resilient element extending from a portion of said supporting part to said fixed base, and a spring extending from a- .fixed point con trolling the rotational movement of said supporting part.

2. The combination with a rotating ele- "ment, of a swinging element, a fixed base for said rotating element and said swinging element, a brake controlling said rotatingele- 'ment when 'said swinging element is in a predetermined position, a stud passing through'an opening in said fixed base supporting said brake, the dimension of said 0 ening in a certain direction being greater is an the corresponding dimension of saidstud, said stud being provided with a recess, and a resilient element extending from said fixed base through said recess.

3. The combination with a rotating element, of a swinging element, a base carrying saidIro'tating element and said swinging .element, a brake controlling said rotating filament, a stud carrying said brake and provided with a recess, said base being provided with an opening through which said stud extends and having a dimension greater than the corresponding dimension of said stud, a flexible washer connecting said stud with said base, and a flexible arm extending from said base and through'said recess and tending normally to move said brake in a direction away from said rotating element.

4. The combination with a rotatable table, of a swinging tone arm, a base supporting said table, a pivoted reciprocating braking member mounted on said base, resilient means having one end-in fixed relation to said base and its other end engaging said braking member to thereby tend tounove said braking member in a certain direction.

to effect non-braking, a stop positioned on said 'base limiting the movement of said braking member in said certain direction, a hook controlling said braking member and a projection in fixed relation to said swinging tone arm arranged to engage said hook when said swinging tone arm is in non-playing position to thereby move said braking vmember into braking position.

5. The combination with a rotatable table of a swinging tone arm, a base supporting said table, a braking member pivoted onto said base, said braking member having a part extending angular-1y with respect to another part of said braking member, a fric-' tion pad carried by said first named part of the braking member, resilient means having one end abutting said base and its other end engaging said braking member thereby tending to move said braking member in a certain direction to effect non-braking, a stop positioned on said base limiting the movement of said braking member in said certain direction, a hook carried by Said other part of the braking member and a projection carried by said swinging tone arm arranged to engage said book when said swinging tone arm is in non-playing position to thereby move said braking member into braking position.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

VILLIAM F. GRUPE.-

Witnesses: HENRY J. LUCKE,

K. G. Ln Ann.

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