US202458A - Improvement in center rijvis for watch-cases - Google Patents
Improvement in center rijvis for watch-cases Download PDFInfo
- Publication number
- US202458A US202458A US202458DA US202458A US 202458 A US202458 A US 202458A US 202458D A US202458D A US 202458DA US 202458 A US202458 A US 202458A
- Authority
- US
- United States
- Prior art keywords
- center
- watch
- cases
- improvement
- rijvis
- 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
- 239000011324 bead Substances 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- 239000010970 precious metal Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 241000220010 Rhode Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005096 rolling process Methods 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
Definitions
- This invention consists in the novel construction of the center rim, by which the two side bands are made in one piece of sheet metal, and the soldering of each side band to the center bead avoided, as will be more fully set forth hereinafter.
- Figure 1 represents the center rim with the side bands on one side, and Fig. 2 the opposite side of the same.
- Fig. 3 is a view of the center bead;
- Fig. 4 an enlarged sectional view of the center rim, showing the center bead and the side bands.
- the center rim for watch-cases is that central portion to which the works of the watch, the bezel to hold the watch-glass, and the inner cover, as well as the outer cover, are secured and consists of the center bead a and the two side bands 11 and I).
- These side bands have heretofore been made separately, and were each secured to the center bead by soldering, requiring considerable time and skill. After they were secured to the center bead they were required to be finished so that the bezel and covers would accurately fit and spring on the bands.
- Our improved side bands are formed out of strips of stock-plate, which is formed between suitable rollers by rolling or drawing so as to conform to the section required, and as the central portion uniting the two side bands can be reduced more in thickness than the rest, the metal forms a spiral, from which the rings are cut, the ends soldered together, and the whole finished in suitable dies, when the center bead is forced over the side bands, and thus firmly secured, making a stronger, better, and cheaper center rim than when the two side bands are separately made and secured to the center bead.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adornments (AREA)
Description
D. H. PEARCE 8a A. W. TAFT.
Center-Rim for Watch-Case. No. 202,458..
Patented April 16, 1878.
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UNITED STATES PATENILQFFIGE.
DAVID H. PEARCE AND ALANSON W. TAFT, OF PROVIDENCE, R. I.
IMPROVEMENT IN CENTER RIMS FOR WATCH-CASES.
Specification forming part of Letters Patent No. 202,458, dated April 16,1878 application filed July 5, 1877.
To all whom "it may concern:
Be it known that we, DAVID E. PEARCE and ALANSON W. TAFT, both of the city and county of Providence and State of Rhode Island, have invented new and useful Improvements in Center Rims for Watch-Gases; and we hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming part of this specification.
This invention consists in the novel construction of the center rim, by which the two side bands are made in one piece of sheet metal, and the soldering of each side band to the center bead avoided, as will be more fully set forth hereinafter.
Figure 1 represents the center rim with the side bands on one side, and Fig. 2 the opposite side of the same. Fig. 3 is a view of the center bead; Fig. 4, an enlarged sectional view of the center rim, showing the center bead and the side bands.
The center rim for watch-cases is that central portion to which the works of the watch, the bezel to hold the watch-glass, and the inner cover, as well as the outer cover, are secured and consists of the center bead a and the two side bands 11 and I). These side bands have heretofore been made separately, and were each secured to the center bead by soldering, requiring considerable time and skill. After they were secured to the center bead they were required to be finished so that the bezel and covers would accurately fit and spring on the bands.
In the manufacture of watch-cases it is im portant that all parts should at times be made of stock-plate, either of pure precious metal, alloys of metal, or of inferior metal covered at the sides with precious metal of the same or different grades of fineness.
Our improved side bands are formed out of strips of stock-plate, which is formed between suitable rollers by rolling or drawing so as to conform to the section required, and as the central portion uniting the two side bands can be reduced more in thickness than the rest, the metal forms a spiral, from which the rings are cut, the ends soldered together, and the whole finished in suitable dies, when the center bead is forced over the side bands, and thus firmly secured, making a stronger, better, and cheaper center rim than when the two side bands are separately made and secured to the center bead.
Having thus described our invention, we claim as new and desire to secure by Letters Patent- In a center rim for watch-cases, the combi nation, with the two side bands Z) and b, made of one piece of drawn or rolled metal, of the center head a, substantially as and for the purpose described.
DAVID H. PEARCE. ALANSON IV. TAFT.
Witnesses:
J osEPH A. MILLER, J OSEPH A. MILLER, Jr.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US202458A true US202458A (en) | 1878-04-16 |
Family
ID=2271863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US202458D Expired - Lifetime US202458A (en) | Improvement in center rijvis for watch-cases |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US202458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD799989S1 (en) * | 2016-03-15 | 2017-10-17 | Citizen Watch Co., Ltd. | Wrist watch case |
-
0
- US US202458D patent/US202458A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD799989S1 (en) * | 2016-03-15 | 2017-10-17 | Citizen Watch Co., Ltd. | Wrist watch case |
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