US312856A

US312856A - Trustees

Info

Publication number: US312856A
Authority: US
Publication date: 1885-02-24
Anticipated expiration: 1902-02-24

Description

G. HUNTER.

STEM WINDING AND HAND SETTING ATTAGHMENT FOR WATUHES.

(No Model.)

Patented Feb. 24, 1885.

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UNITED STATES PATENT OFFIc GEORGE HUNTER, OF ELGIN, ILLINOIS, ASSIGNOB, BY MESNE ASSIGNMENTS, TO ROYAL E. ROBBINS, OF BOSTON, MASS, AND TIIOS. M. AVERY, OF

CHICAGO, ILLINOIS, TRUSTEES.

STEM-WINDING AND HAND-SETTING ATTACHMENT FOR WATCHES.

SPECIFICATION forming part of Letters Patent No. 312,856, dated February 24-, 1885.

Application filrd August 2:, L884.

lb aZZ whom it may concern:

Be it known that I, GEORGE HUNTER, of Elgin, in the county ofKane, and in the State of Illinois, have invented certain new and useful Improvements in Stem-Winding and Hands Setting Attachments for IVatches; and I do hereby declare that the iollo'wing is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which Figure 1 is an enlarged perspective view of my push-pin and its connections separated from each other. Fig. 2 is a like view of the same combined. Fig. 3 is a longitudinal section of the stem or pendent portion of a watchcase containing my invention, the push-pin being in position for operating the winding mechanism; and Fig. 4 is a like View of the same with said push-pin in position for actuating the hands-setting mechanism.

Letters of like name and kind refer to like parts in each of the figures.

My invention is an improvement upon a like invention for which Letters Patent No. 192,425 were issued upon the 26th day ofJune, 1877; and it consists, principally, as an improvement in stem-winding and handsetting watches, in a push-pin which is adapted at its inner end to engage with the winding and hands-setting train, and is provided with a retainingspring that is attached directly to, is adjustable lengthwise of, and moves with, said push-pin, in combination with the chambered stem or pendant of a watch-case, substantially as and for the purpose hereinafter specified.

It consists, further, in combining with the chambered stem or pendant ofa watch-case a ring of hard metal, which is secured within said chamber and is adapted to engage with the retaining-spring of a removable push-pin, substantially as and for the purpose hereinafter shown.

It consists, finally, in the combination of the push-pin, the adj ustable retaining-spring, the chambered stem or pendant, and the engaging-ring, substantially as and for the purpose hereinafter set forth.

In the annexed drawings, A represents the (No model center-band, B the stem or pendant, O the bow, and D the case-spring, of a watch-case of usual construction.

The stem or pendant B isprovided with the usual axial opening, 7), that at its inner end has a slightly greater diameter than the push-pin or windingstem arbor IQ, which is to be used therein, while the outer portion of said opening is considerablyincreased in diameter,and at or within its outer end contains a ring, Z), constructed from hard metal, that is secured in place by burnishing, or other suitable means, and forms at such point a rounded shoulder. The push-pin or windingarbor E has such diameter of its inner portion as to enable the same to be loosely contained within the corresponding part of the stein-opening 1), and such length that when said inner end is resting upon the spring D its outer end will project the required distance from out of the stem B, and at such point receive a crown, F.

At a point near the longitudinal center of the push-pin IE is a threaded enlargement, 6, upon which is placed a U-shaped spring, G, that at its inner end has a threaded opening, g, which passes over and engages with said enlargement e. The outer ends of the arms 9 of the spring G are slightly spread, so that their outer faces at such point will have a greater spread than the inner diameter of the ring I), and within such faces is provided a circumferential groove, 9 that corresponds in transverse size and shape to the inner face of said ring Z).

As thus constructed the spring G operates by engagement of its outer ends, or of the groove ,\\ith the ring I) to hold thepush-pin E in position within the stem or pendant B, while permitting of its ready withdrawal therefrom when a suificient force is exerted 0 in an outward direction.

In adjusting the push-pin E to the watchcase, the spring G is moved longitudinally until its outer ends will bear lightly against the lower side of the ring Z), when the inner end of said push-pin has a bearing upon the spring D, by which means all rattle from end motion of said puslrpin is avoided.

The push-pin E is used for the movement of the spring G precisely as in ordinary cases,

and by the engagement of its inner end with Winding and hands-setting mechanism may be used in any usual manner for winding the mainsyning and setting the hands, while by withdrawing said push-pin until the springgrooves engage with the ring I) said push pin, while held in such position, will be free to revolve.

The partial withdrawal of the push-pin E may be utilized for throwing the hands-setting train into position for use, and also en ables the watch-movement to be easily removed from or placed within the case.

Having thus fully set forth the nature and merits of my invention, what I claim as new is 1. As an improvement in stem-winding and hand-setting watches, a push-pin which is adapted at its inner end to engage with the winding and handssetting' train, and is pro vided with a retaining-spring that is attached directly to, is adjustable lengthwise of, and moves with, said puslrpin, in combination with the chambered stem or pendant of a watch-ease, substantially as and for the purpose specified.

2. ln combination with the chambered stem or pendant of a watch-case, a ring of hard metal which is secured within said chamber and is adapted to engage with the retaining spring of a removable pushpin substantially as and for the purpose shown.

3. The combination of the push-pin, the adjustable retaining-spring, the chambered stem or pendant, and the engagingring, substantially as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 21st day of July, A. D. 1881-.

GEORGE HUNTER.

\Vitnesses:

XVILLLUI II. CLOUDMAN, H. L. GIVEN.