US157291A - Improvement in watch-case springs - Google Patents
Improvement in watch-case springs Download PDFInfo
- Publication number
- US157291A US157291A US157291DA US157291A US 157291 A US157291 A US 157291A US 157291D A US157291D A US 157291DA US 157291 A US157291 A US 157291A
- Authority
- US
- United States
- Prior art keywords
- spring
- watch
- case
- improvement
- hooks
- 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
- 238000007514 turning Methods 0.000 description 6
- 230000000717 retained Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000789 fastener Substances 0.000 description 2
- 239000007787 solid Substances 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
- G04B37/00—Cases
- G04B37/0008—Cases for pocket watches and wrist watches
- G04B37/0025—Cases for pocket watches and wrist watches with cover or bottom with a spring (savonette) bench watches opening or closing with spring action G04B37/0463
Definitions
- the object of my invention is to provide a simple and convenient means of clamping and holding a watch-case spring in the rim of a case in such a manner that the spring can be inserted, adj usted, and secured in an instant by turning a screw, and also instantly freed and removed by turning the screw in a reverse way. It consists in hooks or projections von the spring, and a clamping device that engages the hooks, and is retained and operated in the hollow of the rim by a set-screw, that enters from the outside oi' the rim, as hereinafter fully set forth.
- Figure 1 in my drawing is aperspective view, illustrating the construction ot' my improved spring.
- a a represent the hooks or projections on the top and rear and convex side of the central part ofthe spring. They may be formed solid with the spring by swaging, or they may be made and attached in any suitable manner. The space between the hooks is about half an inch, for the purpose of allowing longitudinal adjustment of the spring when the hooks have engaged the clamping device in the rim.
- d represents the clamping device, and is a perspective view from the rear or convex side. It conforms with the shape oi' the spring and the hooks a, which it is to engage, and has a swell or enlargement, a, in its center on the rear or convex side. A female screw is cut into this central enlargement, to receive the set-screw, which enters through the rim of the case.
- Fig. 3 is a perspective view of a section oi' a watch-case, and illustrates the relative positions and operations of the several parts of my invention.
- b is the rim of the case; c, a section of the spring; d, the clamping device; g, the setscrew.
- the clamp d is first placed in the hollow of the rim b, and the set-screw g then passed through the rim, and into the place provided for it in the enlarged center oi' the clamp. In this position the clamp can always be retained, and needs only to be adj usted vertically by means oi the screw g to hold or free the spring c.
- the hooks a may stand upward from the lower edge of the spring, and the clamp d maybe pressed upon them, to accomplish the results contemplated by my invention.
Description
'1. PARMELEE. Watch-Case Springs.
Patented Dec. l, 1874.
Mmaexwf. XMK@ UNITED STATES PATENT OFFICE.
JULIUS PARMELEE, OF DES MOINES, IOWA.
IMPROVEMENT IN WATCH-CASE SPRINGS.
Specification forming part of Letters Patent No. 157,291. dated December 1, 1874 application tiled February 5, 1874.
To all whom it may concern Be it known that I, J ULrUs PARMELEE, of Des Moines, in the county of Polk and State of Iowa, have invented an Improved Watch- Oase Spring and Fastener, of which the following is a specification:
The object of my invention is to provide a simple and convenient means of clamping and holding a watch-case spring in the rim of a case in such a manner that the spring can be inserted, adj usted, and secured in an instant by turning a screw, and also instantly freed and removed by turning the screw in a reverse way. It consists in hooks or projections von the spring, and a clamping device that engages the hooks, and is retained and operated in the hollow of the rim by a set-screw, that enters from the outside oi' the rim, as hereinafter fully set forth.
Figure 1 in my drawing is aperspective view, illustrating the construction ot' my improved spring.
a a represent the hooks or projections on the top and rear and convex side of the central part ofthe spring. They may be formed solid with the spring by swaging, or they may be made and attached in any suitable manner. The space between the hooks is about half an inch, for the purpose of allowing longitudinal adjustment of the spring when the hooks have engaged the clamping device in the rim.
In Fig. 2, d represents the clamping device, and is a perspective view from the rear or convex side. It conforms with the shape oi' the spring and the hooks a, which it is to engage, and has a swell or enlargement, a, in its center on the rear or convex side. A female screw is cut into this central enlargement, to receive the set-screw, which enters through the rim of the case.
Fig. 3 is a perspective view of a section oi' a watch-case, and illustrates the relative positions and operations of the several parts of my invention.
b is the rim of the case; c, a section of the spring; d, the clamping device; g, the setscrew.
In the practical use of my improvement, the clamp d is first placed in the hollow of the rim b, and the set-screw g then passed through the rim, and into the place provided for it in the enlarged center oi' the clamp. In this position the clamp can always be retained, and needs only to be adj usted vertically by means oi the screw g to hold or free the spring c. To insert the spring, lower the clamp l by turn ing the screw g, and allow the hooks a to pass over its top edge; adjust the spring c longitudinally, as may be required, and then raise the clamp d by drawing it up with the screw g, and the top edge of the spring will be pressed iirmly against the roof of the rim b, and securely held in its proper position to perform its function. To free and remove the spring', turn the screw in the reverse way, and lower the clamp, so that the hooks will disengage and allow the spring to drop out.
The hooks a may stand upward from the lower edge of the spring, and the clamp d maybe pressed upon them, to accomplish the results contemplated by my invention.
I claim as my inventionrIhe combination of the watch-case spring having the hooks a a., the clamping device d, and fastening device g, witha watch-case, substantially as described, and for the purposes specified.
J ULIUS IARMELEE. Witnesses:
L. A. CRANE,
E. W. ATTMORE.
Publications (1)
Publication Number | Publication Date |
---|---|
US157291A true US157291A (en) | 1874-12-01 |
Family
ID=2226701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US157291D Expired - Lifetime US157291A (en) | Improvement in watch-case springs |
Country Status (1)
Country | Link |
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US (1) | US157291A (en) |
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0
- US US157291D patent/US157291A/en not_active Expired - Lifetime
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