US157913A - Improvement in center-pinions for watches - Google Patents
Improvement in center-pinions for watches Download PDFInfo
- Publication number
- US157913A US157913A US157913DA US157913A US 157913 A US157913 A US 157913A US 157913D A US157913D A US 157913DA US 157913 A US157913 A US 157913A
- Authority
- US
- United States
- Prior art keywords
- screw
- shaft
- watches
- pinion
- collet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 241000013987 Colletes Species 0.000 description 10
- 241000256844 Apis mellifera Species 0.000 description 2
- 206010022114 Injury Diseases 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B13/00—Gearwork
- G04B13/02—Wheels; Pinions; Spindles; Pivots
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B1/00—Driving mechanisms
- G04B1/10—Driving mechanisms with mainspring
- G04B1/18—Constructions for connecting the ends of the mainsprings with the barrel or the arbor
- G04B1/20—Protecting arrangements against rupture or overwinding of the mainspring located in the barrel or attached to the barrel
Definitions
- FIG F111 5 WITNEB BEE INVENJI' n UNITED STATES PATENT OFFICE.
- My invention has for its object to provide against the injury to the train of wheels in a watch in case the mainspring breaks or becomes otherwise detached, so that the train will not receive the shock caused by the recoil when the spring gives way.
- my invention consists in the shaft of the center pinion being provided with a screw-thread, upon which works a collet, which is also provided with a correspondin g screw-thread, in combination with a small spring and slot made in the pinion-wheel, in which said slot or groove works a corresponding bar or rib, which is rigidly secured to the said movable collet.
- Figure 1 represents, in elevation, the shaft of a centerpinion of a watch, showing a screw-thread.
- Fig. 2 represents, in plan, the centerpinion.
- Fig. 3 is a side elevation of the pinion-wheel detached from the shaft.
- Fig. 4 is a vertical central section of my improvement in operative position.
- Fig. 5 is a similar section, showing my improvement when out of gear.
- Fig. 6 is an elevation of screwnut.
- Fig. 7 is an elevation of the collet.
- Fig. 8 is an elevation of the spring.
- H represents the shaft upon which the center-pinion of a watch is placed.
- P represents a screw-thread, which commences near the top of the shaft, and extends downward to about the middle of the pinion, more or less, when the pinion is in its position upon the shaft. Below this screw-thread the shaft is made smaller in diameter, so as to allow the collet B to work freely upon the shaft when it has been run down off the screw-thread, at which time it becomes so disengaged that no power or motion is transmitted to the train.
- This screw-collet is provided with a rib or bar, g, which fits closely but loosely in the slot or groove r in the pinion-wheel W".
- S shows a spring, which is secured to the shaft H in such a manner as to act upon the screw-collet. (Shown in Fig. 5.)
- N represents a screw-nut, which secures all the parts of my invention in their proper positions.
- the shaft H provided with a screw-thread, P, spring S, in combination with a movable screw-collet, B, and pinion W, substantially as herein shown and described, and for the purposes set forth.
Description
D. GRUEN. Gentei-Pinions fur Watches.
Patented Dec.22,1874
7 FIG F111 5 WITNEB BEE INVENJI' n UNITED STATES PATENT OFFICE.
mnrnron GRUEN, or DELAWARE, OHIO.
Specification forming part of Letters Patent No. 157,913, dated December 22, 1874; application filed June 12, 1874.
To all whom it may concern:
Be it known that I, DIETRICII GRUEN, of the town of Delaware, in the county of Delaware and State of Ohio, have invented new and useful Improvements in Oenter-Pinions for Watches; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon, making a part of this specification.
My invention has for its object to provide against the injury to the train of wheels in a watch in case the mainspring breaks or becomes otherwise detached, so that the train will not receive the shock caused by the recoil when the spring gives way.
The nature of my invention consists in the shaft of the center pinion being provided with a screw-thread, upon which works a collet, which is also provided with a correspondin g screw-thread, in combination with a small spring and slot made in the pinion-wheel, in which said slot or groove works a corresponding bar or rib, which is rigidly secured to the said movable collet.
To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.
Figure 1 represents, in elevation, the shaft of a centerpinion of a watch, showing a screw-thread. Fig. 2 represents, in plan, the centerpinion. Fig. 3 is a side elevation of the pinion-wheel detached from the shaft. Fig. 4 is a vertical central section of my improvement in operative position. Fig. 5 is a similar section, showing my improvement when out of gear. Fig. 6 is an elevation of screwnut. Fig. 7 is an elevation of the collet. Fig. 8 is an elevation of the spring.
Letters of like name and kind indicate like parts in each of the figures.
H represents the shaft upon which the center-pinion of a watch is placed. P represents a screw-thread, which commences near the top of the shaft, and extends downward to about the middle of the pinion, more or less, when the pinion is in its position upon the shaft. Below this screw-thread the shaft is made smaller in diameter, so as to allow the collet B to work freely upon the shaft when it has been run down off the screw-thread, at which time it becomes so disengaged that no power or motion is transmitted to the train. This screw-collet is provided with a rib or bar, g, which fits closely but loosely in the slot or groove r in the pinion-wheel W". S shows a spring, which is secured to the shaft H in such a manner as to act upon the screw-collet. (Shown in Fig. 5.) N represents a screw-nut, which secures all the parts of my invention in their proper positions.
y The operation of my invention is simple and may be readily understood. hen the pinion-wheel is turned to the right it will be seen that by the action of the spring S the screwcollet is forced up and becomes engaged with the screw-thread on the shaft, and at the same time the screw-collet is carried up and becomes engaged with the screw-nut, and thus becomes rigid with the shaft sufficiently to impart motion to the whole mechanism of the watch for keeping time. In case the mainspring breaks or becomes otherwise detached the action is reversed, at which time the collet runs down off the thread on the shaft, the pinion is carried along from the barrel by the recoil of the spring, and so brings down the screw-collet below the thread, which gives it entire looseness, so as to relieve the strain upon the train.
' It is well known that many watches are made for which no provision is made for the protection of the train of wheels against the recoil of the mainspring in case it breaks or becomes detached. In such case the whole force of the recoil is brought upon the train so suddenly that it is not able to resist it, and the consequence is that very often many of the teeth or pivots are broken and the watch greatly damaged. By my invention this difficulty and danger is entirely obviated; besides, in case the mainspring breaks, a new one can be replaced without the necessity of taking the watch apart.
Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is
The shaft H, provided with a screw-thread, P, spring S, in combination with a movable screw-collet, B, and pinion W, substantially as herein shown and described, and for the purposes set forth.
DIETRIOII GRUEN.
Witnesses:
GEo. O. Enron, D. H. Por'rnn.
Publications (1)
Publication Number | Publication Date |
---|---|
US157913A true US157913A (en) | 1874-12-22 |
Family
ID=2227323
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US157913D Expired - Lifetime US157913A (en) | Improvement in center-pinions for watches |
Country Status (1)
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US (1) | US157913A (en) |
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- US US157913D patent/US157913A/en not_active Expired - Lifetime
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