US432709A - Paul ferret - Google Patents

Description

(No Model.)

P. FERRET. STEM WINDING WATCH.

Patented July 22, 1890.

UNITED STATES PATENT ()FFICE.

PAUL FERRET, OF CHAUX-DE-FONDS, SWITZERLAND.

STEM-WINDING WATCH.

SPECIFICATION forming part of Letters Patent No. 432,709, dated July 22, 1890.

Application filed November 12,1888. Serial No. 290,542. (No model.)

T on whom it may concern:

Be it known that 1, PAUL FERRET, watchmanufacturer, of ChauX-de-Fonds, in Switzerland, have invented certain new and useful Improvements in WVatches, of which the following is a specification.

My invention consists of an improved stemwinding and hand-setting mechanism, as hereinafter described.

In the accompanying drawings, Figure l is a top view of the mechanism; Fig. 2, a top view of the spring-barrel and bridge P after removing the bridge G. Fig. 3 is a view of the mechanism placed under the dial in position for winding up the watch. Fig. 4 shows the sanie mechanism in position for setting the hands. Fig. 5 is a cross;section through a: y of Fig. 2.

In all the figures similar letters refer to similar pieces.

The half-plate P is affixed to a plate A by means of the pillars 1, 2, and 3, and it carries the spring-barrel, the first and the second wheel, and the winding mechanism, which is secured upon the half-plate P by means of a bridge G. The screws 1 and 2 secure the bridge G to the half-plate P and the latter to plate A. The screw 3 assists in securing the half-plate P to plate A, and screw 4 secures the bridge G to half-plate P. This arrangement allows of the withdrawal either of the bridge G without unscrewing the screw 3 or of the half-plate P and bridge G without unscrewing the screw 4. The crown-wheel E and the wheel F, which are fixed upon the mainspring-axis, and the click 1%, with its spring r, are in recesses in the half-plate P and held in place by the bridge G.

In my winding-up mechanism the click m does not act as usual upon the wheel F, but upon the wheel E. The pivot of the latter is a cylindrical projection i, forming part of the bridge P, and which is surrounded by a steel ring h, having a pin 71, preventing its rotation. The spring 7 is held in place by the pin 0". The pivot of the click m is also a cylindrical projection formed with the bridge P and into which the screw 4 of bridge G is screwed.

The hand-setting mechanism, placed under the dial, Figs. 3 and 4, consists of a sliding pinion B, an oscillating lever g, a spring 70, acting on said lever, a double-armed lever c, and a sliding bolt cl, which bolt is drawn outwardly in the watch-case, when the hands are to be set, to the position, Fig. 4. The bolt 0?, thus shifted, acts by a cam-notch against a pin 6 and causes the lever c to swing and move the lever g and pinion B, throwing the latter into gear with the wheel Z. The lever g, spring 7c, and wheel Z are within a recess of the plate A and beneath a bridge 0, and the wheel Z is one of the hand-moving gears.

Having thus described my invention, I claim- 1. In winding and hand-setting devices, both acted upon by the stem, the combination, with the wheel E and spring-click m engaging the same, of the sliding pinion B on the winding-stem, the bridge 0, the lever g, and spring is, acting on the pinion B, the lever c, and bolt 61, having a cam-notch for imparting motion to the levers c and g, substantially as shown and described, and for the purpose specified.

2. The combination, with the half-plate P, having three pillars 1, 2, and 3, the bridge G, and wheel F, of the crown-wheel E, a steel ring h and pin t'upon the plate 19 within and forming the axis for the crown-wheel t, the click m, engaging the crown-wheel E, and the spring r for said click, substantially as and for the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

PAUL FERRET.

\Vitnesses:

NUMA FERRET, ALBERT FAVRE.

Images