US731789A

US731789A - Stem-winding watch.

Info

Publication number: US731789A
Application number: US12777302A
Authority: US
Inventors: Edouard Koehn
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-10-18
Filing date: 1902-10-18
Publication date: 1903-06-23
Anticipated expiration: 1920-06-23

Description

PATENTED JUNE'23, 1903.

E. KOEHN. STEM WIN DING WATCH.

APPLICATION FILED OCT. 18, 1902. v

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No. 731,789. PATENTED JUNE 23, 1903. E. KOEHN.

STEM WINDING WATCH.

nrmouxon rum) 00T.18, 1902. no MODEL. ZSHEBTS-SHEET 2 Patented June 23, 1903.

PATENT ()FFic EDOUARD, KOEHN, on GENEVA, SWITZERLAND.

STEM-WINDING WATCH.

SPECIFICATION forming part of Letters Patent No. 731,789, dated June 23, 1903.

Application filed October 18, 1902- Serial No. 127,773. (No model.)

To all whom it may concern:

Be it known that I, EDOUARD KOEHN, manufacturer, of Geneva, Switzerland, have invented certain new and useful Improvements in Vatches, of which the following is a specification.

My invention consists in certain improvements in and relating to watches, and especiallyto the so-called extra flat watches and the invention refers, on the one hand, to a peculiar arrangement of the movers intended to combine a very strong mainspring and spring-barrel with such an extra flat watch notwithstanding the small space which is available in such watches, and, on the other hand, to provide a new winding-up device for such mainspring and a handsetting mechanism both acted upon by the stem of the eXtra fiat watch.

The present invention consists in the said improvements without reducing in any way the normal height of the escapement and in a manner which allows the balance-wheel to project above the other parts of the watch.

In the drawings, Figure 1 is a plan view of those portions of the watch which are in cluded in the invention and which are located under the dial. Fig. 2 is a similar plan view of the opposite face of the watch-movement.

Fig. 3 is a partial plan of the movement,

showing the parts in a different position than Fig. 2 and after the withdrawal of the mainspring-barrel and first or center wheel. Fig.

4 is a side elevation of the rocking lever b.

Fig. 5 illustrates separately and on an e11- larged scalethe setting-screw Z. Fig. 6 is a plan view similar to Fig. 1, showing a modified construction of the rocking lever Z. Fig. 7 is a plan view similar to Fig. 2, showing the said modification. Fig. 8 is a cross-section on the line A B O D of Fig. 6.

In Figs. 1 to 5, a is the watch-plate, on which is pivotally connected arocking bridge Z), Fig. 2, by means of a pivot-screw c, which, passes through the said plate a and is screwed to a disk (Z, placed on the opposite face of the plate, Fig. 1. The disk cZ acts as a pivot for the gear-wheel e, which meshes with the usual stem-pinionf. A spring q is provided, which tends to maintain the rocking bridge 1) into its normal position. (Shown in Fig. 2.)

The rocking bridge Z) has a projection 1),

Figs. 3 and 4, which passes through an opening a in the plate a and which carries a pinion g, continuously in gear with the wheel 8 and which may be put into gear with the minute-wheel h when the parts are thrown into their positions shown in Fig. 3that is to say, when the stem 70 is moved in the direction shown by an arrow in the said Fig. 3. Z is the hand-setting lever, one end of which engages the circumferential groove 7t of the stem 70, and the other arm of which engages one of the notches of the arm Z) of the rocking bridge 1).

In order that the stem It may be easily removed when the movement is to be taken out of the casing, the pivot-screw i of the lever dis provided with a head having a doubleconical recess, 'as shown in Fig. 5, and the hole in the said lever i is diagonal or made with inclined walls, as shown in the said figure, the plate a being, moreover, provided with a suitable recess allowing the lower conical portion of the said head of screw ito descend into the said recess when the screw 1" is screwed down. When this takes place, the leveriis automatically displaced by the upper conical portion of the screw-head in the direction as shown by the arrow 2, and when the screw 1" is unscrewed, and therefore the lower conical portion of its head raised, it will cause the lever Z to be displaced in the directionas shown by the arrow Z. In the first instance the end of said lever 2' will be caused to engage the groove Zc, and in the second instance it will be removed therefrom. The arm b of the rocking bridge I) is beveled and bears against a pin Z, which passes through an opening a in the plate and is fixed to a disk Z, Fig. 1, pivoted at Z to the plate. To. the disk Z is pivotally connected a pinion m, which gears when in the position shown in Figs. 1 and 2 both with the wheel 6 and with the wheel n. \Vhen the disk Z is rotated, by means of the displacement of the pin Z, from the position of Fig. 2 to the one of Fig. 3, the'pinion m is disengaged from the wheel 71, but remains in gear which passes through an aperture a of the plate, Fig. 2, and which is to be acted upon by hand when it is desired to put the pawl out of action. If one presses the stem is inwardly in the direction shown by an arrow in Fig. 1, the lever z' is rocked into the position I in which it allows the rocking bridge I) to be placed by the action of the spring q into the position shown in Fig. 1, and the spring 0 then keeps the pinion m in gear with the barrel-wheel at.

If one pulls the stem outwardly in the direction of the arrow shown in Fig. 3, the lever icauses the arm b of the rocking bridge I) to be rocked from the position of Fig. 2 to the position of Fig. 3, and the arm b then displaces the pin P, so as to disengage the pinion m from the wheel n.

In the modification shown in Figs. 6 and 7 the above-described disk Z is replaced by a rocking lever Z pivotally connected to the plate a at Z and guided by means of a fixed screw Z which passes through a suitable slot in the said lever Z The latter carries a pin I, acted upon by the spring 0 in the opposite direction to that in which the spring 0 acts upon the disk Z, as shown in Fig 1. The

lever Z is provided with a pin Z passing through a suitable hole in the plate a on the opposite face of the watch and engaging therewith a rocker r, pivoted to the plate at r and acting upon the rocking bridge I), which is provided in this construction with a suitable recess for the said rocker r. This device works exactly in the same manner as the one shown in Figs. 1 to 5 and hereinbefore described.

Fig. 8 is a cross-section on the line A B C D i of Fig. 6 and shows the arrangement of the mainspring-barrel with regard to the plate a and to the winding-up device.

The mainspring-barrel s is of usual con struction, and its shaft 25 has a collar 25, suitably located in a recess of the plate a. winding-up wheel n is fixed by means of suitable screws to the said collar 25 and is located in a recess made in the opposite face of the plate.

I claim as my invention- 1. In a stem winding and setting watch, the combination with the watch-plate and a stem having a circumferential groove therein, of a rocking lever 'i, one end of which engages the groove of said stem and a pivot-screw t having two conical portions and passing through a diagonal opening in said' rocking lever and into the said plate whereby the said rocking lever may be caused to move laterally and the end thereof made to engage or disengage the said groove in the stem by turning the said pivot-screw.

2. In a stem winding and setting watch, the combination with the watch-plate, a stem, a rocking lever i and a pivot-screw 'i which when turned is adapted to move the said le- The ver laterally, of a hand-setting pinion g, a winding-up pinion m, and means connected with said pinions and actuated by the movement of the said stem through the said rocking lever, whereby the said pinion m is thrown out of gear and the said pinion g is thrown into gear with their respective wheels when the said stem is pulled, and vice versa when the stem is pushed in.

3. In a stem winding and setting watch, the combination with a watch-plate and a stem, of a rocking lever i, a pivot-screw having a double-conical portion and passing through the rocking lever i and adapted to move the same laterally, a three-armed rocking bridge I) actuated by the movement of the lever i, a hand-setting pinion g thereon, a rocking disk Z, a winding-up pinion thereon, and a pin carried by said disk Z and adapted to be engaged by one arm of the bridge Z) whereby the stem may be actuated to throw the pinion m out of gear and the pinion 9 into gear and vice versa, substantially as set forth.

4. In a stem winding and setting watch, the combination with a watch-plate and a stem, of a rocking lever i, a pivot-screw 1" having a double-conical portion and passing through the rocking lever i and adapted to move the same laterally, athree-armed rocking bridge I) actuated by the movement of the lever 2', a hand-setting pinion g thereon, a rocking disk Z, a winding-up pinion thereon, and a pin carried by said disk Z and adapted to be engaged by one arm of the bridge 1) whereby the stem may be actuated to throw the pinion m out of gear and the pinion 9 into gear by pulling out the stem, and means for returning both the bridge I) and disk Z to their normal position when the stem is pushed in, substantially as set forth.

5. In a stem Windin g and setting watch, the combination with a watch-plate and a stem having a circumferential groove therein, of a rocking lever 2', one end of which engagesthe said groove of the stem, means for connecting the said lever to the said plate whereby said lever may be moved to cause the end thereof to engage and disengage the said groove without detaching the said lever from the plate, a hand-setting pinion g, a winding-up pinion m, and means connected with said pinions and actuated by the movement of the said stem through the said rocking lever whereby the said pinion m is thrown out of gear and the said pinion g is thrown into gear with their respective wheels when the said stem is pulled, and vice versa when the stem is pushed in.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

EDOUARD KOEIIN.

WVitn esses E. IMER-SOHNEIDER, En. KoEHN, Jr.