US1317474A - Fbitz babbezat - Google Patents

Description

F. BARBEZAT.

WATCH. APPLICATION F`ILED PEAB-1, 1918.

1,317,474. Patented Sept. 30, 1919.

INVENTOPv rEiTz BAEEEZAT, or La CHAUX-DE-Eonns, SWITZERLAND.

WATCH.

Specification of Letters Patent. Patented Sept. 30, 1919.

Application led February 7.y 1918. Serial No. 215.745.

To all whom t may concern:

Be it known that I, FRITZ BARBEZAT, citizen of the Swiss Republic, residing at La ChauX-de-Fonds, Switzerland, have invented certain new and useful Improvements in Vatches, of which the following is a specification.

My invention relates to watches and particularly to an improvement in the stemwinding, stemsetting mechanism and to means for fastening the watch movement in the casing, including a yoke connected with the winding stem, saidyoke being operated by aXial motion of said Winding stem, the yoke being engaged in a groove provided in the stem, thus connecting the stem with the watch movement. In the invention, the aforesaid yoke is provided with a resilient arm connected with the winding stem which arm constantly tends to keep itself enga ed within a peripheral groove of the stem, ut may be disengaged so as to allow said stem to be disconnected from the movement by means of a sliding member acting on said arm and operated by hand.

On the accompanying drawing, forming part of this specification, Figure 1 is a partial face elevation showing the mechanism placed under the watch dial, whereas Fig. 2 is a partial transverse section taken approximately, on line A-B of Fig. 1.

In the drawing, 1 represents the watchinovement and 2 the watch-case, 3 the pendant with the bow thereof and 4 the winding crown adjusted to the upper end of the winding-stem 5. The winding and setting mechanism of the watch is of the stemwinding and stem-setting type and is provided, in addition to the stem 5 with the wheel 6 connected with the windin pinion 7 and the two yokes 8 and 9, pivote respectively in 8 and 9-10 is the minute wheel with its pinion 11; 12 is the intermediate wheel thereof, whereas 18 represents the cannon pinion.v An arm 14 of the yoke 9 is provided with a pin 15 engaged in a groove 16 of the winding stem, so that yoke 9 may be operated by axial motion of stem 5, and may act, in its turn, on yoke 8 of the wheel 6, thus causing the latter to clutch with intermediate wheel 12 for the purpose of setting the hands. The arm 14 of the yoke 9 acts as a spring in a plane normal to that of said yoke and thus constantly tends to keep within groove 16 of the stem 5 so as to connect the latter with the watch movement.

Inorder to allowof stem 5 being easily and quickly pushed in or pulled out, of the casing for detaching or attaching the movementito or from the watch-case, a device is provided which permits arm 14 to be disengaged from stem 5. IhisI device includes a. lever 17 pivoted on stop-screw 18 forming pivot 8 of yoke 8. As long as arm 14 is engaged in groove 16 of stem 5 a saddlebacked projecting piece 19 of lever 17 placed under arm 14 is engaged in a corresponding notch 2O of said arm. But, on removing the lever so as to bring the latter to a position shown on the drawing in a dash-and-dot line, by moving a knob 21 provided on said bolt, the projecting piece 19 leaves the notch 2O and shifts the arm 14 as shown by dashand-dot line on Fig. 2. Hence, the pin 15 is disengaged from groove 16 of stem 5 and the latter may be removed from the watch altogether. After having re-adjusted the stem, the latter is fastened by pushing the `lever toward its former position, so that the projecting part 19 is rengaged into notch 2O of arm 14, which allows the latter to return and be rengaged by the pin 15 in the groove 16 of the winding stem. In the eX- ample shown, the lever is also used for the purposeof fixing the movement to the watchcase. To that effect, said lever 17 is inserted in a recess of the movement plate and reaches a point below the watch-case flatedge 22, close to a notch 23 thereof. The width of notch 28 corresponds to the width of the end of the lever 17 and allows said end to pass freely when placing the movement for casing the latter under the edge of the Watch-case. On pushing the lever to the left (Fig. 1), said bolt is engaged frictionally under flat edge 22 by a notch 24 provided in the movement plate and simultaneously connects stem 5 to the movement and the latter to case 2. To uncase the movement, the lever has but to be moved to the right, as shown by the dash-and-dot line on Fig. 1, as far as required for the end of said lever to be placed within notch 28 of flat edge 22, a position allowing stem 5 to be set free from arm 14 thus permitting said stem to be withdrawn from the watch.

The advantage resulting from the invention hereinbefore described is easy and quick casing and uncasing of the movement, since said operations may be done without using any tool, the members connecting the winding stein to the movement and fixing the latter to the watch case not requiring any screws.

Having thus fully described my` invention, What I claim as new and desire to secure by Letters Patent of the United States is,-

In combination, a Watch easing, a Watch movement including a detachable Winding and setting stem having a groove formed therein, an arm biased toward said stem, a pin on said arm and disposed in said groove, and means for actuating said arm to remove said pin from the groove, said means comprising a level' operable exteriorly of the casing, andj a, cam formed on the lever and actuating with the arm.

In testimony whereof I have aixed my signature in presence of tivo Witnesses.

FRITZ BARBEZAT.

Witnesses:

CH. C. KLINGEL, M. J. STEHLIN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner` of Patents, Washington, I). C.

Images