US356729A

US356729A - Hair-sprsng plier

Info

Publication number: US356729A
Authority: US
Publication date: 1887-01-25
Anticipated expiration: 1904-01-25

Description

(No Model) T. REEVE, Jr.

HAIR SPRING PLIERS.

No. 356,729. Patented Jan. 25, 1887.

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NY PETERS mummhc m hur, wahmgmlrc' UNITED Srnrns Parent Oriana THOMAS REEVE, JR, OF GLASSBOROUGH, NEW JERSEY, ASSIGNOR OF ONE- HALF TO CHARLES SGHEER, OF PHILADELPHIA, PENNSYLVANIA.

HAIR-SPRING PL! ER.

SPECIFICATION forming part of Letters Patent No. 356,729, dated January 25, 1887.

Application filed May 8, 1886. Serial No. 201.545. (No model.)

1' all whom it may concern.-

Be it known that I, THOMAS Reeve, J12, a citizen of the United States, residing at Glassborough, in the county of Gloucester and 5 State of New Jersey, have invented certain new and useful Improvements in Hair-Spring- Oollet Removers; and I do hereby declare the following to be afull, clear, and exact description of the invention, such as will enable If) others skilled in the art to which it appertains to make and use the same.

This invention relates to tools iised by watch-makers (or removing the hair-spring collet with its attached spring from the staff of the balance-wheel of a watch when it is de-' sired to remove the spring for any purpose.

The object of the invent-ion is to produce an implement by the aid of which the hail? spring collet and the attached spring may be removed quickly from the staff of a balancewheel, and without in any way disarranging, bending, or distorting the spring, and with out requiring that the balancewheel and spring be removed from the watch-case before separating them.

Vith this object in view the invention resides in an instrument made in the general form of a pair ofpinchers, and having its pivoted arms provided at their operative ends with depending portions so formed as to pass around the hairspring when in position, and to wedge themselves between the collet and the staff of the balance-wheel in such way as effectually to remove the collet and spring.

The invention resides particularly in an instrument made in the general form of a pair of pinchers, provided at their operative ends with depending portions bent outward and then inward at inclines, and having their ends 40 so beveled as to wedge themselves, when proper pressure is'applied, between the collet and the top of the balancewheel, in order to raise the collet from its seat, the bend of the ends being such as to receive the spring between them and prevent injury to the spring by bending or distorting.

I have illustrated the invention in the ac companying drawings, in which- Figure l is a perspective view of a hairspringcollet remover made in accordance with my invention. Fig. 2 is an end view of the same, and Fig. 3 is a plan view showing the instrument in position for operation.

In the drawings, A and A represent pivoted arms, provided with suitable handles, a and a, of such form as to be grasped conveniently by an operator, and pivoted together at b. The operative ends B and B are provided with depending portions b and it. These ends are first bent outward from the portions B and B, and thence inward, forming a space of such form between the two as to provide a receptacle for the hair-spring when the instrument is in use. The lower ends, If and b, of the ends I) and b are quite sharp, and are beveled in such way as to present lower plain surfaces,which slide along the upper portion of the balance-wheel in such manner as to allow the sharp edges to enter the collet and the wheel and exert a wedging action to unseat the collet, and consequently to remove it and the spring attached thereto from the balancewheel.

In using the tool the operative ends are moved apart as far as required to pass over 7 the spring, and the ends b and I) allowed to rest upon the spoke of the balance wheel. The handle portions A and A are then slowly drawn together, sliding the sharp edges b and 21 along the spoke. As the sharp edges come in contact with the collet, and sufficient force is applied, they wedge themselves between the collet and the balance-wheel, and thus separate the collet from the wheel, and the spring and collet may then easily be lifted off.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. An instrument for removing hairspring collets, made approximately in the form of pinchers, provided with depending operative ends which are bent first outward and then inward, forming a receptacle for the spring while being removed, substantially as described.

2. A hair-springcollet remover, made approximately in the form of apair of pinchers, provided with depending operative ends which are bent first outward and then inward. and provided with beveled edges, substantially as 100 and for the purpose set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

THOS. REEVE, JR.

iVitnesses:

DAVID E. MEAD, WM. H. GIVEN.