US359397A - Watch-case pendant - Google Patents

Description

(Model.)

E. P. MARGOT.

WATCH CASE PENDANT.

Patented Mar. 15, 1887.

v UNITED STATES PATENT OFFICE.

EUGENE F. MABGOT, OF BOSTON, MASSACHUSETTS.

WATCH-CASE PENDANT.

SPECIFICATION forming part of Letters Patent No. 359,397, dated March 15, 1887.

Application filed October 8, 1886. Serial No. 215,646. (Model.)

To aZZ whom it may concern.:

Be it known that I, EUGENE FELIX MARGOT, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Watch-Pendants, of which the following is a specification, reference being had to the accompanying drawings, in which- Figure lis an axial section of a watch-pendant embodying my invention, and Fig. 2 an other axial section on a plane at right angles to the plane of Fig. l, these two sections illustrating my invention as applied to a case with a spring-catch to hold the back or the cover down. Figs. 3 and 4 are sectional views of a watch-pendant embodying my invention, like Figs. 1 and 2, except that the winding-arbor does not serve as a pusher for a spring-catch to hold the back or cover down. Fig. 5 is an elevation of the tubular stern of the pendant detached, and Fig. 6 an elevation of the crown. All the gures are enlarged for clearness.

My invention consists in the combination of the stem 'and crown of the pendant by means of a slight ridge on the stern and an enlargement of the bore of the crown, as will be more fully described.

In the drawings, A is the stem of the pendant, B the crown, D the bow, and F the winding-arbor. These parts are all of usual construction, except that'a ridge, a, is formed on the stein A, and a depression, b, within the crown B. The interior of the crown is cut away above the mouth, and left so thin near the mouth that the niouth will slightly enlarge when the crown is pushed down over the ridge a, and yet regain its original size after the mouth of the crown has passed over the ridge.

I have found in practice, when the crown is made in the usual way-that is, with ornamental ridges b-that the ends of these ridges act'as slight springs-that is, the mouth of the crown surrounded by these ridges will open or enlarge sufficiently to pass over the ridge a on stem A, and yet not become permanently. enlarged, so that the crown will be held in its usual place, with the ridge a above the mouth of the crown, and yet the crown can be readily shifted to bring its mouth above the ridge t on stein A for the purpose of setting the hands.

In Figs. 1 and 2 the crown is used as a thumb-piece to force the winding-arbor F against the catchspring g, which holds the cover h closed. This is a common use of the crown and winding-arbor in hunting-cases,an d often in open-face watches, where the cover` or back is held closed by a catch-spring. retaining-screw j is used to prevent the crown B and winding-arbor F from heilig pulled too far out when the crown is pulled out, so as to bring the key of the winding-arbor F into position to set the hands.

In most stein-winders, and in stem-winders where the crown is not pulled out to position f'or use in setting the hands, the main function of the ridge a will be to hold the crown B in place on the stein A; but its position in Figs. l and 2 is to hold the crown in either of its two positions, and also to so hold the crown as not to interfere with its function as a thumb-piece for the spring-catch g.

In Figs. 3 and 4 the crown B has no function as a thumb-piece, but must occupy the position shown on the stem A for use as a stemwinder, but be pulled back so that the mouth of the crown will be above the ridge a on stem A when the crown is to be used to set the hands.

I have shown the ridge a as an annular ridge, but it is not essential that it should extend around the stein as an annulus, although that is the form I prefer.

What I claim as my invention is In a Watch-pendant, the stem A, with its ridge a, in combination with the crown B, grooved at b, all as and for the purpose specilied.

EUGENE F. MABGOT. i

Witnesses:

J. E. MAYNADIEE, JOHN B. SNOW.

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