US403820A - yeakel - Google Patents

Description

(No Model.)

A. M. YBAKEL. STEM WINDING AND SETTING WATCH.

No. 403,820. Patented May 21 1889.

III

UNITED STATES PATENT OFFICE.

ABRAHAM M. YEAKEL, OF SELLERSVILLE, PENNSYLVANIA, ASSIGNOR TO CRESSMAN & YEAKEL, OF SAME PLACE.

STEM WINDING AND SETTING WATCH.

SPECTFICATION forming part of Letters Patent No. 403,820, dated May 21, 1889.

Application filed January 16, 1889. Serial No. 296,392 (No model.)

To aZZ whom it may concern.-

Be it known that I, ABRAHAM M. YEAKEL, a citizen of the United States, and a resident of Sellersville, in the county of Bucks and State of Pennsylvania, have invented cert-ain new and useful Improvements in Stem Vinding and Setting \Vatches; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form a part of this specification, and in which- Figure 1 is a front or face view of a watch with the dialplate removed, showing part of my improved stem setting and winding mechanism. Fig. 2 is a longitudinal sectional View of the pendant. Fig. 3 is a perspective view of the same, showing its several component parts separated from one another. Fig. 4 is a cross-section through the pendant on line a; 00 in Fig. 2. Fig. 5 is a detail view of the winding and setting stem or key removed from the pendant, and Fig. 6 represents two sectional detail views of the arbor-socket, which receives the winding and setting stem with its plunger and yoke.

Like letters of reference denote corresponding parts in all the figures.

This invention relates to that class of stem winding and setting watches in which the spur wheels or pinionsi which engage the wheels upon the post of the mainspring and the wheels of the hands are journaled at the ends of a yoke having a common spur-wheel engaging at will those wheels at the ends, and thereby engaging the setting and winding pinion, said yoke being adapted to be rocked or tilted, so as to engage either the winding or the setting mechanism, as desired.

The object of my invention is to simplify both the construction and the manner of operating watches of that type; and to this end it consists in certain improvements upon the stem winding and setting mechanism for which Letters Patent of the United States No. 350,407 were granted to me on the 5th day of October, 1886, which. said improvements will be hereinafter more fully described and claimed.

Reference being had to the accompanying drawings, the letter A denotes the front plate of the movement; 13, a spur-wheel secured upon the post of the mainspring, (not shown,) and 0 represents the minute-wheel, the wheels B and 0 being disposed on opposite sides of the center arbor and sleeve.

F is the yoke, which is pivoted upon a circular disk or bearing, G, and carries at one end the wheel M, adapted to intermesh with the mainspring-wheel B, and at the other end a wheel, N, similarly adapted to engage the wheel Qwhich, as we have seen, meshes with the pinion upon the post of the minute-hand. Thus it will be seen that by tilting or rocking the yoke to one side in the position shown in full lines in Fig. 1, wheels M and B will intermesh, while by tilting the yoke in the opposite direction wheels M and B will be disengaged,whereas the wheels N and C will intermesh or engage each other. Both the wheels M and N engage opposite sides of a central spur-wheel or toothed ring, I, which revolves upon the circular disk or hearing G, and which in turn intermeshes with a bevel-pinion, H, Fig. 6, so that by rotating the latter a revolving motion will be imparted to wheel I and through it to the intermeshing yokewheels M and N, which motion will be imparted either to the winding-wheel B or the setting-wheel 0, according to which one of said two wheels B or O is in engagementwith its appropriate yoke-whcel for the time being.

I have described this partof the watchmovement, although it forms no part of my invention, because it is necessary to understand it in order to properly comprehend the mechanism whereby this tilting or rocking motion of the yoke is eltected, and which I shall now proceed to describe.

The pinion ll is provided with a socketed arbor, a, into which fits movably the lower square end of the arborstem 1) below its cylindrical shoulder or offset 0, and it follows that when this stem or key is rotated the arbor a and pinion ll will revolve with it. The

cylindrical upper end of the arbor-stem b is threaded and screwed into a threaded socket,-

' ral spring, 2', the lower end of which bears of different makes and styles.

against a loose collar or washer, j, resting upon the ofiset c of the pin, the end of said spring projecting into a notch, 76, in collar j. The upper end of the spring impinges upon an inwardly-projecting annular offset or shoulder, Z, in the sleeve f, so that it will be seen thatthe spiral spring 11 is confined endwise between the washer j of thearbor-stem and the inner shoulder, Z, of sleeve f. The latter is inserted through a collar, m, having an upper threaded flange, n, which is screwed into the rim or flange of the crown, and a downwardly-projecting rim or flange, 0, which overlaps the upper rim of the pendant P, so as to have a free sliding up-and-down motion upon the same. By adjusting the relative positions of the crown or winding-knob e and collar m by means of their intermeshing screw-threads the central arbor-stem or key-pin, b, (the upper end of which, as we have seen, is fastened in the crown,) may be gaged as to length so as to project more or less from the lower end of the pendant into the Watch-case and movement, thereby greatly simplifying and facilitating the adjustment of the arbor-stem to the arbor-socket in movements and cases This collar m, by being screwed into the crown and forming a part thereof, also operates to make the pendant and its interior mechanism dustproof, as well as very strong and durable.

By reference to the detail views, Fig. 6, it will be seen that the tilting yoke F bears at one end (011 the side of the wheel N) against a spring, S, which operates to hold the yoke in the position shown in dotted lines in Fig. 1that is to say, with the yoke-wheel N engaging the setting-wheel C; but after the movement has been inserted into its proper case and the length of the arbor-stem b properly adjusted the tension or pressure of the yoke-spring S is overcome by the pressure of .the stiffer spring, '5, which encircles the arborstem and forces the same in a downward direction. The squared lower end of this arbor-stem or key-pin b bears against a plunger, p, which is inserted into the square socket a from below and bears with its enlarged lower end against a shoulder, g, on the inner side of the yoke-plate F. Thus it will be seen that, the downward pressure of the stem 12 and plunger p (actuated by the spiral spring 1') being greater than the lifting-power of the yoke-spring S, the yoke will under normal conditions be in the position illustrated in full line in Fig. 1, in which the pinions and wheels H, I, M, and B intermesh, so that by revolving the or own or winding-knob e the watch will be wound; but if a person, by pulling upon the winding-knob with sufficient force to overcome the tension of its spring 2', lifts stem 2) in its socket a, thereby releasing the yoke-plunger p, it follows that pressure upon spring S being now relaxed, the latter will force the yoke into the setting-position (indicated by dotted lines in Fig. 1) with the pinion s and wheels H, I, N, C, D, and E thrown into en gagement' with one another, so that by turning the crown while held in this position the hands may be set. By letting go of the knob it will instantly and automatically fly back to its normal position, impelled by spring 1', no pressure or other adjustment of the knob or any other part of the watch being necessary to cause the parts to resume their normal positionz 6., with the yokewheel M and winding-wheel B engaging each other. i

It will be seen that my improvement is adapted to watch-cases of the different styles known to the trade as dust-proof, openface, hunting-case, &c., and also that it 'maybe applied to all those movementsin which the setting mechanism is brought into action by downward pressure upon the arborstem or key-pin. As types of this class of movements may be mentioned the Waltham, Elgin, Rockford, and many others. None of these well-known movements require to be changed or altered in any manner to adapt them to myimproved automatic stem winding and setting mechanism.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States 1. In a stem winding and setting watch of the described class, the combination of the tilting yoke, yoke-spring, socketed arbor, plunger working in said arbor, and spring-actuated arbor-stem or key-pin bearing against the plunger and yoke with a greater downward pressure than the lifting-power of the yoke-spring, substantially as and for the purpose set forth.

2. In a stem. winding and setting watch of the described class, the combination of the socketed winding and setting arbor, shouldered arbor-stem or key-pin, spiral spring, crown or winding-knob having a downwardlyprojecting central threaded socket for the attachment of the arbor-stem, the inner sleeve encircling said stem and its spring, the collar screwed adjustably into the inner rim of the winding-knob, and the pendant, substantially as and for the purpose shown and set forth.

3. In a stem winding and setting watch, the combination of the case, pendant, central shouldered stem-arbor or key-pin, the Washer Working on the shoulder of said pin, the spiral spring, shouldered sleeve, sooketed and threaded crown orwi11dingk11ob, and the oo1 1m attached adjustably to the crown and adapted to slide upon the pendant, substmr tially as and for the purpose shown and set forth.

In testimony that I claim the foregoing as my own I have hereunto aflixed my signature in presence of two Witnesses.

- ABRAHAM M. YEAKEL.

XVitnesses:

BENJ. H. LESTER, JOHN HARE.

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