US1407231A

US1407231A - Pendant setting mechanism

Info

Publication number: US1407231A
Application number: US437795A
Authority: US
Inventors: Staehli Edward
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-01-17
Filing date: 1921-01-17
Publication date: 1922-02-21
Anticipated expiration: 1939-02-21

Description

asmgnu. PENDANT SETTING MECHANISM.

' APPLICATION FILED JAN. I7, 1921- Patented Feb. 21, 1922.

1 levers are so minute and mounted so close to UNITED STATES PATENT OFFICE.

EDWARD STAEHLI, OF LA GRANGE, ILLINOIS.

IENDANT SETTING MECHANISM.

Application filed January 17, 1921.

To all whom it may concern:

Be it known that l, Eowenn Sramrm, a citizen of the United States, residing at La Grange, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Pendant Setting Mechanism, of which the following. is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to pendant setting mechanism for watches and has to do more particularly with an improved and simpli iied mechanism for operating the clutch wheel by the winding and setting stem, and also for holding the stem in operative relation to the windingand setting mechanism in such a manner that it may be readily re moved therefrom.

Mechanism of this character, and particularly where used in the very small watches such as wrist watches and the like, the parts ordinarily are of very minute construction and so closely mounted on account of lack of space that some of the screws and edges of the plates that it is exceedingly difficult to assemble and disassemble the parts.

One of the features of my invention is the provision of a pendant winding and setting mechanism of the positive type in which the elements are sufliciently separated and so mounted that more space is given to the placing of screws and the use of larger ones than ordinarily employed.

Another feature of my invention the provision of a slidably mounted primary clutch wheel shift bar which is acted upon by the stem to shift the clutch wheel and also acts to hold the stem in the watch.

Another feature is the provision of a cam shouldered screw for holding the slidably mounted primary bar in operative relation to the stem but which screw may be rotated to permit separation of the parts so that the stem may be Withdrawn.

There are other features of my invention but these will be more particularly referred to throughout the specification and in the appended claims.

For a better understanding of my invention reference is to be had to the accompanying drawing in which'- Fig. 1 is a face view showing the preferred Specification of Letters Eatent.

Patented Feb. 21, 1922.

Serial No. 67,795.

form of my improved pendant winding and setting mechanism with the parts in wind position;

Fig. 2 shows the parts with the stem in setting position;

Fig. 3 shows the slidably mounted primary clutch wheel shift bar pressed out of operaive relation with the stem to permit withdrawal thereof;

Fig. i is a transverse section along the line l-d of 3; and

Fig. 5 is an enlarged view of the cam shouldered screw and primary bar or setting cam.

Referring now more in detail to the form of my invention as illustrated, I have shown the main frame 6 of the watch but have left out the usual standard mechanism employed, showing only the parts immediately involved in the winding and setting mechanism. The winding and setting stem 7 is also shown extending r'lownwardly through the usual winding pinion S and clutch wheel 9 to a suitable bearing its lower end. The clutch wheel 9 is slidingly carried by the stem and when in its upper position ens the winding pinion 8 but when in its lower position engages the setting pinion 10, which is of course, connected to the usual gear train to the hands although this not shown. The pinion 8 and clutch wheel 9 are set in suitable recesses so that they will be maintained in proper align- =nt when the stem 7 is withdrawn. The "liltCll wheel 9 has a central annular groove d by the arm of the secondary shiftl this lever being mounted in a tween the main frame and the usual ate or bridge piece depending upon the construction employed. This secondary lever if is pivotally mounted by a screw 12 which with my improved construction may be spaced a desirable distance from the edge of the frame so as to provide sufficient stock between the screw and the edge of the frame to make it of more easy construction. Also by means of my improved construction the screw 12 may be made of larger diameter than heretofore employed in setting mechanism of the positive type such as is here employed. This is, of course, of great importance where parts are so closely ass mbled a few thousandths of an inch is In order to main provide a spring 13'which acts upon the depending portion of the secondary lever 11. so as to normally hold the clutch wheel 9 in operative engagement with the winding pinion 8.

In order to shift the secondary lever 11 so as to move the clutch wheel 9 from its winding to its setting position and vice versa, 1 provide a primary setting bar 14- slida ly mounted upon the frame between the plates of the watch and supported at one end by the pin 15 which extends through a movement limiting slot in the bar 14-, and supported at its other end by av screw 16 which holds the end it of: the primary bar in operative relation to the annular slot 7 in the stem '7, so that the shitting of the stem will slidably move the primary bar 1%. I also pro ide a spring 17 which engages the primary bar 1% under tension. This spring 17 serves several purposes. One purpose is to act upon the primary bar or setting cam so as to effect a snap action of: the stem 7 when moved from one position to another. This is brou ht about by the free end oi the spring 14 engaging the notches in the bar 14las it is shifted from one position to as the movementof the cam 14: is started, as the spring rides over the central portion between the notches, it falls into the'opposite depression and thus forces the bar it one way or the other.

Another purpose of the spring 17 is to move the arm 14- out of holding engagement with the annular groove 7 of the stem. as shown in Fig. 3, so as to permit a withdrawal of the stem. In order to bring this about, screw 16 is turned so that its camshaped poi ion 16 is moved far enough to permit the spring 1'7 to press the primary bar 14; away from the stem as in and Spring 17 also holds the bar and stem in alternate positions.

In order to operate the secondary lever 11 so as to shift the clutch wheel 9, cooperating cam mechanism on the primary and sec-- ondary levers is provided, this being preten ably in the form of a cam-Shaped end 4!. carried by the primary bar which engages pin 18 carried by the secondary lever 11. Thus, when the stem 7 is moved from its winding position as shown in Fig. 1 to its setting position as shown in Fig. 2, the upward movement of. the primary bar 14: causes the cam 14 to engage the pin 18 and rotate the secondary lever 11 about its axis 12 so to move its arm downwardly to shift the clutch wheel 9 into engagement with the setting pinion 10 as shown in Fig. A reverse movement of the stem 7, that is downwardly or inwardly, will bring about a reverse movement of the parts so as to shift the clutch wheel back to its winding position as shown in Fig. 1.

another. That is, stem 7 and setting hat I claim as new and desire to secure by U. S. Letters Patent is:

1. A pendant winding and setting mecha nism for watches including a stem, a clutch wheel carried by the stem, a primary bar operative'ly engaged by the stem and having a vertical part slidably mounted to one side thereof, a secondary lever tor shifting the clutch-wheel, and cam mechanism carried by said'bar and lever beyond the vertical part of the bar whereby the operation of the primary bar actuates the secondary lever to shift the clutch-wheel.

2. A pendant windin and setting mechanism for watches including a stem, a clutchvwheel carried by the stem, a slidably mounted primary bar 'operatively engaged by the stem, means for releasing the primary bar from the stem to permit withdrawal of the stem, a secondary lever tor shitting the clutch-wheel, and cam mechanism carried by said bar and lever whereby the operation ol the primary bar aetuates the secondary lever to shift the clutch-wheel.

A pendant winding and setting mechanism for watches including a stem, a clutchwheel carried by the stem, a slidably mounted primary bar operativcly engaged by the stem, screw ope 'ated means for holding the primary bar in operative relation to the stem and whereby said means may be operated to release the primary bar from the stem to pen mit withdrawal of the stem, at secondary lever for shifting the clutch-wheel, and cam mechanism carried by said bar and lover whereby the operation of the primary bar actuates the secondary lever to shift the clutch-wheel.

at. A pendant winding and setting mechanism for watches including a stem, a. primary clutcn-wheel shifbbar slidably mount ed to move parallel with the stem and in operative relation therewith, a spring tending to press the bar out of operative relation to the stem, and an adjustable stop to normally hold the bar and stem in operative relation but movable to permit said spring to move the bar away whereby the stem may be withdrawn.

5. A pendant winding and setting mechanism for watches including a stem, a primary clutch-wheel shift-bar slidably mounted to move parallel with the stem and in operative relation therewith, a spring tendingto press the her out of operative relation to the stem, notches in said bar cooperative with said spring to effect a snap'action of the stem, and an adjustable stop to normally hold the bar and stem in operative relation but movable to permit said spring to move the bar away whereby the stem may be withdrawn.

6. A pendant winding and setting mecha nism for watches including an annularly grooved stem, a primary clutch-wheel shiftbar operatively related to said stem by the stem groove, and means for limiting the movement of the shift-bar to limit the movement of the stem and means whereby the shift-bar may be moved laterally away from the stem without dismounting same so as to permit withdrawal of the stem.

7. A pendant winding and setting mechanism for watches including an annularly grooved stern and a primary clutch-wheel shift-bar operatively related to said stem by the stem groove and also holding the stem against withdrawal, and means whereby the shift-bar may be moved laterally away from the stem without dismounting same so as to permit withdrawal of the stem.

8. A pendant winding and setting mechanism for watches including a stem, a main plate and bridgeplate, a primary clutchwheel shift-bar slidably mounted between said plates in operative relation to the stem, and a screw having a cam-shoulder portion positioned between the plates to hold the bar in operative relation to the stem, said screw being operative to release the shift-bar from operative relation to the stem.

9. A pendant winding and setting mechanism for watches including an annularly grooved stem, a primary clutch-wheel shiftbar operatively related to said stem by the stem groove, and means for slidably mounting said bar so as to be slidably movable parallel with the stem but pivotally mounted so as to be tiltable away from the stem to permit withdrawal thereof.

10. A pendant winding and setting mechanism for watches including a stem, a clutchwheel carried by the stem, a primary bar operatively engaged by the stem and having a vertical part slidably mounted to one side thereof, a secondary lever for shifting the clutch-wheel, and cam mechanism carried by said bar and lever beyond the vertical part of the bar whereby the operation of the primary bar actuates the secondary lever to shift the clutch-wheel, and an adjustable stop-screw and spring acting to hold primary bar and stem in operative relation but permit separation of the parts whereby the stem may be withdrawn.

11. A pendant winding and setting mechanism for watches including a stem, a clutchwheel carried by the stem, a slidably mount ed primary bar operatively engaged by the stem, a secondary lever for shifting the clutch-wheel and in operative relation with the primary bar, an adjustable cam engaging the bar to normally hold it in operative relation with the stem but whereby the bar is released from the stem when the cam is adjusted so as to permit withdrawal of the stem.

12. A pendant winding and setting mechanism for watches including a stem, a clutch wheel carried by the stem, a slidably mounted primary bar operatively engaged by the stem, a secondary lever for shifting the clutch-wheel and in operative relation with the primary bar, an adjustable cam engaging the bar to normally hold it in operative relation with the stem but whereby the bar is released from the stem when the cam is adjusted so as to permit withdrawal of the stem, and a spring pressing said bar against the cam.

13. A pendant winding and setting mechanism for watches including a stem, a primary clutch-wheel shaft-bar slidably mounted to move parallel with the stem and in op erative relation therewith, a spring tending to press the bar out of operative relation to the stem, means on said bar cooperative with said spring to effect a snap action of the stem, and an adjustable stop to normally hold the bar and stem in operative relation but movable to permit said spring to pivotally move the bar away whereby the stem may be withdrawn.

In witness whereof, I hereunto subscribe my name this 31st day of December A. D.,

EDWARD STAEHLI.