US348980A - Escapement-lever for time-pieces - Google Patents

Description

(No Model.)

A. M. LANE.

ESGAPEMENT LEVER FOR TIME PIECES. No. 348,980. Patented Sept. l4, 1886.

UNITED STATES A L HER PATENT OFFICE...

N M. LANE, OF MERIDEN, CONNECTICUT.

ESCAPEMENT-LEVER FOR TIME-PIECES.

S'PEGIFICATION forming part of Letters Patent No. 348,980, dated September 14, 1886.

Application filed February 6. 1886. Serial No. 190,978. (No model.)

To all whom it may concern.-

Be it known that I, ALMEEON M. LANE, a citizen of the United States, residing at Meri- (len, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in EscapementLevers, of which the following is a specification.

My invention relates to improvements in escapement-lcvers for marine clocks; and the objects of my improvement are to lessen the cost of production and to produce a lever which shall be very durable and accurate.

in the accompanying drawings, Figure 1 is an elevation 01' my lever, together with the verge and the shat't upon which they are mounted. Fig. 2 isaside elevationot't'he same, and Fig. 3 is a plan view of the blank from which my said lever is formed. All of said figures are on an enlarged scale.

A designates the shaft, B the verge, and C the escapement-lever. As in prior clocks, this lever is provided with a poise at one end and at the other end with a fork havingaccntral slot and a guard-pin for operation, rc spectivcly, in connection with the pin and crescent ot the balance-wheel.

Heretot'ore the guard-pin in levers of this class has been made at a separate piece and secured to the lever by screws, rivets, and analogous fastenings, and oftentimes of wire bent up and secured by one end to the lever within the hole made to receive it. This pin has generally been secured by both riveting and soldering one end to the lever; but sometimes the soldering has been omitted. Such a construct-ion is not only expensive, but considerable labor is required after the lever is made to bring the guard'pin to the exact length required, and even when titted itis very liable to becomeloosened,so as not to 0p crate properly.

In my lever the end which serves as a poise I have marked a, the fork having the central slot is marked 1), and the guard-pin is marked 0. I first blank out the lever C in the form shown in Fig. 3, without any proper slot in the end which is to form the fork; but 1 form at the middle of this end the guardpin c, which, however, yond the end of the rest of the blank. This blank is then placed in a combined cutting and swaging dic,which acts to simultaneously cut the blank on the parallel broken lines shown in Fig. 3 and bend or swage the metal so cut into the form represented in Figs.1 and 2, thereby otlsetting the body of the guardpin 0 from the slot of the fork and bringing the outer portion of said pin into a plane at one side of the longitudinal plane of the lever C, and drawing its end inward into proper working positiongvhiclnin the particular construction shown, is in the same transverse plane as that of the end of the fork- By this construction I save the expense ot drilling the lever and ot' riveting and soldering the guardpin therein. The construction is notonly more economical at first, but the construction is so accurate that no fitting is required, and the guard pin or point is so rigid as to be very du rable, and not likely to he accidentally displaced.

'lhe verge herein shown is made the subject of another application 01' even date herewith.

I claim as my invention The herein-descri bed escapenient-lever,having the guardpinc, whose body is offset from the slot of the fork, said t'ork, guard-pin, and body of the lever all being formed of one piece of sheet metal the thickness of which is substantially represented in the finished lever, substantially as described, and for the pnrpose specified.

ALMERON M. LANE.

W'itnesses:

JAMES SHEPARD, J OHN Enwanns, J r.

projects longitudinally be-

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