US344026A - Stem-winding mechanism for watches - Google Patents

Description

(No Model.)

W. BELL.

STEM WINDING MECHANISM FOR WATCHES.

Patented Jun 22 Wol'neu ea.

N. PLrERs MW wanin n. c

UNITED STAT S PATENT OFFI E.

IVEBSTER BELL, OF BOSTON, MASSACHUSETTS.

STEM-WINDING MECHANISM FOR WATCHES.

SIECIFIGATION forming part of Letters Patent No. 344,026, dated June 22, 1886.

Application filed March 29, 1886.

To all whom, it may concern.-

Be it known that I, \VEBs'rER BELL. of Bos ton, in the county of Suffolk, State of Massachusetts, have invented a certain new and useful Improvement in \Vatches, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which'said invention appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is an enlarged plan view showing the movement of a hunting-case watch with the case and dial removed; Fig. 2, a like view of the movement of my improved watch, and Fig. 3 a reduced view of the dial detached.

Like letters of reference indicate corresponding parts in the different figures of the drawings.

My invention relates more especially to that class of stem-windin g watches which are known to the trade as the Howard Steel-Barrel WVatchf and it consists in a novel construc tion and arrangement of the parts, as herein after more fully set forth and claimed, by means of which the movement of an ordinary hunting-case watch of this character is adapted for use with an open dial.

In huntingcase watches of the character described the winding'stem is placed opposite the figures III on the dial, in order that when the case is opened in the usual manner to ascertain the time the figures XII will be uppermost; but in open-face watches it is desirable, for like reasons, that the stem should stand opposite the figures XII, or be so disposed that when the watch is drawn from the pocket and held up to view by the ring or stem said last named figures will appear uppermost.

To convert the hunter movement shown in Fig. 1 into the open-face movement shown in Fig. 2, or to adapt the movement of a steelbarrel Howard stem -winding huntingcase watch to be used with an open dial, and have the stem disposed in proper position, is the object of my present invention, the nature of which will be readily understood by all conversant with such matters from the following explanation.

In the drawings, A represents the barrel; B, the stop wheel; O, the barrel-arbor; D, the

Serial No. 196,9 l9. (No model.)

barrel bridge. or plate; E, the click or retaining-pawl, which engages teeth on the barrelwheel; F, the clielespring; G, the winding bridge or plate; II, the stem; I, the bevelwheel; J, the windingwheel No.1; K, the

set-wheel No. 1; L, the set-wheel No. 2; M, the hour dial-wheel, and N the minute dialwheel, these parts in Fig. 1 being all of the ordinary form and construction found in hunting-case watches of this character.

In order to better understand the nature of my improvement, attention is called to some of the principal changes necessary to convert the movement shown in Fig. 1 into that shown in Fig. 2.

In Fig. 1 the barrel A and barrel-plate D are disposed at the left of the stem and nearly opposite the position of the figures XII on the dial, and in Fig. 2 at the right of the stem and nearly opposite the position of the figures III on the dial. In Fig. 1 the click E and clickspring F are disposed at the left of the barrel, nearly opposite the position of the figure X on the dial, and in Fig. 2 below the barrel, nearly opposite the position of the figures IIII on the dial. In Fig. 1 the winding-plate G is provided with a projection, 03, at the left of the stem II, nearly opposite the position of the figures II on the dial, and in Fig. 2 this projection is at the right of the stem, nearly opposite the position of figure I on the dial. In Fig. 1 the winding-wheel J is disposed above or at the left of the stem, and in Fig. 2 at the right of the stem. In Fig. 1 the bevel-wheel I and set-wheel L stand opposite the figures III on the dial, and in Fig. 2 opposite the position of the figures XII on the dial. In Fig. 1 the set-wheel K is disposed below or to the right of the stem and nearly opposite the position of the figures IIII on the dial, and in Fig. 2 to the left of the stern and nearly opposite the position of the figure X on the dial; and in Fig. 1 the dial-wheel N stands below the dial-wheel M and nearly opposite the po sition of the figures VI on the dial, while in Fig. 2 the dial-wheel N is disposed at the left of the wheel M and nearly opposite the position of the figures IX on the dial, these changes in the construction and arrangement of the parts being necessary in order to transfer the stem H from its position at the right of the ICC hunter movement,- as shown in Fig. 1, to the Having thus explained my invention, what top ofthe open-face movement shown in Fig. 2. I I claim is- It will be understood that the watch is to be In a watch, the stem H, plates D G, barrel provided with a case and crystal,and is also A, stop-wheel B, wheels M N K L I J, click 15 5 provided with such plates, wheels, and work: E, spring F, and dial 0, constructed, conning partsin addition to those shown as to renbined, and arranged substantially as and for der it operative; but as said plates, wheels, I the purpose shown and described.

WEBSTER BELL.

and working parts are constructed and arranged substantially in the same manner as in Witnesses: 1o ordinary watches of this character, it is not 0. M. SHAW,

deemed essential to describe them more fully. E. L. SAWYER.

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