US792414A - Stem winding and setting mechanism for watches. - Google Patents

Description

PATENTED JUNE 13, 1905.

A. GUGGISBERG. STEM WINDING AND SETTING MECHANISM FOR WATCHES,

APPLIOATION FILED 1330.29, 1904.

ym: e/wbo a W w vllwzaow W 3531 fiki Mum m3 UNI ED STATES Patented June 13, 1905.

PATENT OFFICE.

ALBERT GUGGISBERG, OF ST. IM'IER, SlVITZERLAND, ASSIGNOR TO FABRIQUE DES LONGINES, FRANCILLON ET COMPAGNIE, OF ST.

IMlER, SVI ZERLAND.

STEM WINDING AND SETTING MECHANISM FOR WATCHES.

SPECIFICATION forming part of Letters Patent No. 792,414, dated June 13, 1905.

Application filed December 29, 1904. Serial No. 238,752. i

To (0 10/2/0772. it may concern:

Be it known that I, ALBERT Guecrsnnne, a citizen of the Republic of Switzerland, resid ing at St. Imier, in the Canton of Bern and Republic of Switzerland, have invented a new and useful Improvement in a Combined Stem \Vinding and Setting Mechanism, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to improvements in mechanisms for winding and setting timepieces, such as watches; and the object of my invention is to provide a stem winding and setting mechanism of this kind which will be simple and cheap in construction and eflicien in operation.

Combined stem winding and setting mechanisms are known in which a sliding pinion and a false stem are used, the latter being in prolongation of the crown-stem and so arranged that it must participate in its longitudinal displacements and acts on a settinglever, which, by virtue of the action of the false stem, causes a second lever, or windinglever, in engagement with the sliding pinion to assume the position for winding.

The mechanism which it is the object of the invention herein described to provide differs from those heretofore known in that there is arranged therein a spring pivoted on the plate and interposing in the path of the end of the setting-lever a heel or lug upon which the setting-lever bears when it is in winding position in such manner that the free end of the spring by acting upon the stud-lug of the winding-lever maintains the sliding pinion yieldingly in engagement with the crownwheel.

In the drawings illustrating the principle of my invention and the best mode now known to me of applying that principle, Figure 1 is an elevation showing the mechanism in position for setting. 2, 3, and 4 are elevations showing a modified form of my invention, Fig. 2 illustrating the mechanism as in setting position, Fig. 3 representing it in winding position, and Fig. 4 portraying it in the position it takes when the secret of the case is operated. Figs. 5 and 6 are details which will be hereinafter referred to.

The winding-lover H is arranged in front of the plate beside the dial and is in engagement with the sliding clutch-sleeve L, which is slidably mounted on the false stem D. As shown in Fig. 1, the winding-lever H is in setting positionthat is to say, in a position such that the sliding clutch-sleeve meshes with the hour-train and it is kept in this position by reason of the fact that its stud-lug G, which projects through the plate from the lever H and against which rests the free end of the spring J, abuts against the face of the end of the setting-lever E, which cannot pass in front of the stud-lug Gr without crowding or wedging back the latter somewhat, and thereby compressing the spring J. lVhen the crownstem B is pushed inward, the lever E liberates the stud-lug G and forces the spring J to rotate about the point or pivot K, compressing this spring, the free end of which acting upon the stud-lug G brings the lever H into position for winding. When the crown-stem is withdrawn or pulled outward, the tension of the compressed spring J restores the lever E to the position shown in Fig. 1, and the free end of the lever E adjoining the stud-lug Cr forces the lever H into setting position again.

Referring now to Figs. 2, 3, and 4, which illustrate a modified form of my invention. the Winding-lever H is, as before, arranged in front of the plate beside the dial and engages the sliding clutch-sleeve L, which slides on the false stem D. In Fig. 2 the lever H is shown is setting position, while in Fig. 3 it is indicated in winding position. The stud-lug G of the winding-lever H projects in rear of the plate through a slot therein and abuts against the face of the end of the setting-lever E, controlled by a spring C, which maintains the tailpiece of the lever F] in contact with the inner end of the false stern D, the outer end of which under the action of the spring C presses constantly against the inner end of the crown-stem B, a faced portion P of which engages within the sleeve A idle, on which is mounted the crown-wheel F, so fitted in the plate that it cannot be displaced axially. The

position, as shown in Fig. 2, it islocked in that position, for the stud-lug G and the lever E are wedged against each other in such fashion that the lever E can pass in front of the studlug G only by driving the latter back quite a little, and the stud-lug Gr cannot move the lever E against the opposition of the spring (J. Consequently whatever may be the eflort or force necessary to produce rotation of the hands the sliding clutch-sleeve L cannot become disengaged from the hourtrain. In the position of the levers H and E shown in Fig. 2 the spring J, pivoted at K on the plate, can exert no action on the lever H, for this spring is itself under no tension. The spring Chas therefore in this position of the levers H and E no other force to oppose than the counterpressure of the crown-stem B. To bring the lever H from the position shown in Fig. 2 to that represented in Fig. 3, it is only necessary to push the crown-stem B in ward. The lengthwise movement of the crown-stem is transmitted to the false stem D and causes the lever E to move against the tension of the spring C, the face of the lever E releasing the studlug G adjacent thereto and pressing against the heel of the spring J which is made to turn about its'pivot K, while its free end acting upon the stud-lug G brings the lever H into winding positionthat is to say, into a position such that the sliding clutch-sleeve slidably mounted on a hollow-faced axle or shaft integral with the sleeve A is brought into engagement with the crown-wheel F. In this position by turning the stem B the crownwheel F is made to rotate, and the sliding clutch-sleeve L, being held in yielding engagement with the latter through the intermediary of the spring J, will turn the crown wheel Fonly when the crown-stem B is turned in the direction of the arrow shown in Fig. 3. To restore the lever H to setting position, one simply pulls out the stem B, when the spring C immediately returns the lever E to the position shown in Fig. 2, its free end engaging the stud-lug G and forcing the lever H into a position such that the sliding clutchsleeve again meshes with the hour trainwheel Q. Referring now to Fig. 4, if one pushes the stem B far down toward the inside of the movement the bottom or cover of the case in which the movement is inserted is releasedthat is to say, the secret of the case is operated. So when the stern B is pushed completely inwardly, as shown in Fig. 4:, the false stem D likewise reaches the end of its travel, the lever E passes by the position necessary to bring the lever H into winding position, while the latter remains in the position shown in Fig. 3. The spring J then becomes extended and the two springs C and J act in the same direction on the lever E. the parts resuming the position represented in Fig. 3 as soon as the pressure is removed from the stem B.

In the bridge B, Fig. 5, is engaged a screw M, provided with a conical shoulder 0, adjoining which is a spindle which moves in a hole N in the plate. This screw is arranged in proximity to the longer arm of the lever E, so that by turning the screw down into the bridge R the conical shoulder 0 moves the lever E into winding position and looks it therein. By means of this screw M one can bring the mechanism to winding position and lock it therein even when the movement is out of the case.

What I claim is I 1. In a combined winding and setting mechanism, the combination of a stem; a pinion slidably mounted thereon; a pair of cooperating levers, one of which is provided with a stud-lug and is in engagement with said pinion, and the other of which abuts against the inner end of said stem; and a pivoted spring one end of which coacts with said stud-lug and the other end of which bears against the other lever.

2. In a combined winding and setting mechanism, the combination with setting mechanism of astem; a pinion slidably mounted thereon; a pair of cooperating levers, one of which is provided with a stud-lug and is in engagement with said pinion, and the other of which is controlled by said stem; and a pivoted spring interposed between said levers and adapted to press said stud-lug directly against the other of said levers, when said pinion is in mesh with said setting mechanism.

3. In a combined winding and setting mechanism, the combination of a stem; a pinion slidably mounted thereon; a pair of cooperating levers, one of which is provided with a stud-lug and is in engagement with said pinion; and a spring formed with a heel part interposed in the path of the free end of one of said levers and adapted to transmit the mo tion of said lever to the stud-lug on the other of said levers.

4:. In a combined winding and setting mechanism, the com bination of a stem; a pinion slidably mounted thereon; a pair of cooperating levers one of which engages said pinion and is formed with a stud-lug and the other of which is controlled by said stem; and a spring having a heel-piece at its pivoted end, the free end of one of said levers lying adjacent to said heel-piece and the stud-lug on the other of said levers being held between said free end and the free end of said spring, whereby said pinion in winding position is held yieldingly and is locked in setting position.

5. In a combined winding and setting mechanism, the combination of a stem; a pinion slidably mounted thereon; a pair of cooperating levers, one of which is provided with a studlug and is in engagement with said pinion, and the other of which is controlled by said stem; a pivoted spring interposed between said studlug and the free end of the other of said levers; and a spring which bears against the tailpiece of the other of said levers.

6. In a combined winding and setting mechanism, the combination of a plate; a settinglever pivoted thereon; a bridge; and a screw which engages said bridge and is formed with a shoulder which bears against said lever and with a spindle portion which is guided in a hole in said plate, whereby the movement may be set and locked when out of its case.

7. In a combined winding and setting mechanism, the combination of a plate; a stem; a pinion slidably mounted thereon; a pair of cooperating levers one of which is provided with a stud-lug that projects through said plate, and the other of which is controlled by said stem; settingmechanism; andapivoted spring which presses said stud-lug directly against said other lever when said pinion is in mesh with said setting mechanism.

8. In a combined winding and setting mechanism, the combination of a stem; a pinion slidably mounted thereon; a pair of cooperating levers one of which actuates said pinion and the other of which is controlled by said stem; setting mechanism; and a pivoted spring which presses directly against one of said levers and forces it into locking engagement with the other of said levers when the said pinion and setting mechanism are in engagement.

9. In a combined winding and setting mechanism, the combination of a pinion slidably mounted thereon; winding mechanism; spring-controlled levers which cooperate to throw said pinion into and out of mesh with said winding mechanism; and a conical-shouldered screw which bears against one of said lovers to move said pinion into mesh with said winding mechanism and to lock it in that position.

Dated at Bern, Switzerland, this 29th day of November, A. D. 1904.

ALBERT GUGG ISBERG.

Vitnesses:

FRIEDRICH Nansen, NATHANAI LL LEUBA.

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