US151021A - Improvement in watch-case springs - Google Patents
Improvement in watch-case springs Download PDFInfo
- Publication number
- US151021A US151021A US151021DA US151021A US 151021 A US151021 A US 151021A US 151021D A US151021D A US 151021DA US 151021 A US151021 A US 151021A
- Authority
- US
- United States
- Prior art keywords
- case
- watch
- improvement
- springs
- shank
- 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
- 239000002184 metal Substances 0.000 description 5
- 240000000233 Melia azedarach Species 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
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
- My invention is intended to occupy much less space than the springs now in use, and yet be as perfect as any in its practical operation.
- Figure 1 is a view, in perspective, 0f a case-lifting spring embodying my invention.
- Fig. 2 is a plan view of' the same.
- a is the lip, constructed substantially as usual.
- c is a sheet-metal shank, bent into circular form, and tting against the case.
- e is a small flange or lift, extending from the shank c toward the center of the case, and attaching to the case by screws. Inasmuch as the ilange e extends inward instead of outward, the shank c is allowed to press back tightly against the case, thus taking but little room, and not interfering with the movement.
- the catch-spring is made in exactly the same Hlllllllel.
- a sheetmetal ease lifting or catch spring having the flange c extending from the shank c inwardly or toward the center of the case, substantially as herein specified.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Food-Manufacturing Devices (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Description
l. HABWOOD.
Watch-Case Springs.
No.l5l,02l'. PatentedMay19,1874.
/viz
UNITED STATES PATENT GEEIGE JOHN HARWOOD, OF SOMERVILLE, MASSACHUSETTS.
IMPROVEMENT IN WATCH-CASE SPRINGS.
Specification forming part of Letters Patent No. l5 [,021, dated May 19, 1874; application filed March 9, 1874.
To all whom it may concern:
Be it known that I, JOHN HARwooD, of Somerville, in the county of Middlesex and .State of Massachusetts, have invented a new and valuable Improvement in Watch Oase Springs, of which the following, when taken in connection with the accompanying drawings, is a full, clear, and exact specification.
This improvement is applicable to a catchspring or to a case-lifting spring. The latter` only is shown in the drawings, and described belowo Oase-lifting springs are usually made ot' a comparatively thick piece of metal, thus occupyin g considerable space; some, however, are made from sheet metal, having a curved lian ge bent back and outward from the shank and extending along its entire length, so that, practically, as much or more room is taken as by those made of thicker metal. It is hardly necessary to state that as little room must be taken up by the spring as possible.
My invention is intended to occupy much less space than the springs now in use, and yet be as perfect as any in its practical operation.
In the accompanying drawings, Figure 1 is a view, in perspective, 0f a case-lifting spring embodying my invention. Fig. 2 is a plan view of' the same.
Similar' letters of reference indicate corresponding parts.
a is the lip, constructed substantially as usual. c is a sheet-metal shank, bent into circular form, and tting against the case. e is a small flange or lift, extending from the shank c toward the center of the case, and attaching to the case by screws. Inasmuch as the ilange e extends inward instead of outward, the shank c is allowed to press back tightly against the case, thus taking but little room, and not interfering with the movement. The catch-spring is made in exactly the same Hlllllllel.
Having thus fully described my invention, I do not claim a sheet-metal shank as anything new'or novel; but
What I claim, and desire to secure by Letters Patent, is-
A sheetmetal ease lifting or catch spring, having the flange c extending from the shank c inwardly or toward the center of the case, substantially as herein specified.
lVitnesses: JOHN HARWOOD.,
HENRY W. WILLIAMS, E. II. OBER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US151021A true US151021A (en) | 1874-05-19 |
Family
ID=2220433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US151021D Expired - Lifetime US151021A (en) | Improvement in watch-case springs |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US151021A (en) |
-
0
- US US151021D patent/US151021A/en not_active Expired - Lifetime
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