US165786A - Improvement in stem-winding watches - Google Patents

Description

J, D. BREZ.

Stem-Winding watches.

Patented July 20,1875.

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, FLPETERS. PHOTWLITHDGHMYHERY WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

JOHN DANIEL BREZ, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN STEM-WINDING WATCHES.

Specification forming part of Letters Patent No. 165,786, dated July 20, 1875; application tiled June 23, 1875.

To all whom it may concern: Be it known that l, JOHN DANIEL BREZ, of Brooklyn, in the county of Kings andV State ot f N eWYork, have invented a new and useful Improvement in Stem-finding Watches, which improvement is fully set forth in the following specification, reference being had to the accompanying drawing, in Which`- -v Figure l is a cross-section of a watch containing my improvement. Fig. 2 is a front view thereof, partly in section. FiO. 3 is a' sectional view ofthe coupling-piece on an enlarged scale.`

Similar letters indicate corresponding parts.

`My invention relates to certain improvements in stemwinding Watches, and has for one of its objects to admit of removing the movement from the watch-case without disturbing the stem, and Without separating the parts of the watch.

My invention consists in the combination of a coupling-piece with the stem, which extends from the crown -piece, and with the winding-arbor of the Watch, the 'couplingpiece being arranged in such a manner, with respect to the Windingarbor, that the coupling-piece partakes of the movement of the crown-piece andthe stem, While it imparts such movement to the Winding-arbor, as hereinafter fully set forth.

ln the drawing, the letter A designates a Watch-ease, which is provided with a pendant, B, containing the crown-piece O, from which extends the stem D. The crown-piece C is held in place by a screw, a, (one or more,) passing through the side of the pendant B, and catching in an annular groove, b, formed in the shank of the crown-piece in the usual manner, the whole being so arranged that the crown-piece is adapted to turn, in order to ad mit of Winding up the watch, as hereinafter explained, and that the crown-piece is capable of an up-anddoWn movement, being made to form a pusher, and to release the spring F, that confines the front plate of the Watchbase. G designates a winding-arbor, which is conibined with an inner case, H, containing the Works or watchmovement, the arbor G being made to project in order that it may be connected with the Winding' mechanism, composed of the stem D and the crown-piece. The arbor G is connected with the stem D by means of a coupling-piece, l, which is so constructed and connected to the Winding-arbor G and the stem D that by turning the crown-piece O its movement is transmit-ted through the stem D and the coupling-piece to the Winding-arbor G, and by this means the Watch may be Wound up. rlhev coupling-piece I, in the present example, has the form of a barrel, Which embraces loosely the stem D and the Windingarbor, but said coupling-piece may be made in any other form or shape. The lower end of the coupling piece l rests on the casespring F, which is provided with a suitable aperture for the passage ofthe arbor G, While the lower terminus ofthe crown-piece C abuts against the upper end of the coupling-piece, so that when the crown-piece is depressed the spring partakes oi' its depression through the coupling-piece l, and thus the spring is released.

When it is desired to remove the case H containing the movement from the Watchcase A it is only necessary to free it from the rim ofthe watch-case, when the Windingarbor G may be readily disengaged from the coupling-piece, and it follows that the Watch-move ment may be taken out.

rlhe coupling-piece I is held in place When the Watch-movement is removed by the casespring F, when a case-spring is used, as in hunting-Watches. In Watches having an open face, and in which a case-spring is not commonly used, the coupling-piece l may be held in place by other means-as, for instance, the rim of the Watch-case A may form an abutment for the coupling-piece, in Which case the rim is provided with an aperture of sufficient diameter to admit the stem D, but at the same time to prevent dropping out of the couplingpiece.

To replace the Watchmovement in the case A, the Windingarbor G is inserted in the coupling-piece I, whereupon the Watch-movement may be placed in the proper position Without disturbing the crownpiece, the stem, or the pendant B.

By arranging the couplin g-piece loosely with relation to the stem D it has a slight play in a lateral direction, and thus no difficulty is lencountered in connecting the arbor G with it.

To further faeiiitate the introduction of the winding-arbor in placing the Wateirinovenieut in the ease A, the lower end of the coupling piece I is beveled within, as at d. The arbor G can thus be held at an angle to the coupling-piece I in the act of introducing it Without danger of injuring :my of the parts.

In stein-Winding Watches, its heretofore oonstructed, the crown-piece must be removed before the wateh-movement een be got out of the ease, the crown-piece being freed by taking out the screw which attaches it to the pendant. rIhis defect is obviated by my invention, inasmuch as the crown-piece remains undisturbed in removing the Watch-movement, While at the same time the several parts remain complete, und t firm connection of the Winding parts is effected.

That I elztiln as new, and desire to secure J. D. BREZ. [L. s] Witnesses:

W. HAUFF, GHAs. WAHLERS.

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