GB191417131A - Improvements in Methods for Producing Devices consisting a Substances liable to Changes in their Ohmic Resistance under the Action of Light, especially Electric Light Sensitive Preparations and the like. - Google Patents
Improvements in Methods for Producing Devices consisting a Substances liable to Changes in their Ohmic Resistance under the Action of Light, especially Electric Light Sensitive Preparations and the like.Info
- Publication number
- GB191417131A GB191417131A GB191417131DA GB191417131A GB 191417131 A GB191417131 A GB 191417131A GB 191417131D A GB191417131D A GB 191417131DA GB 191417131 A GB191417131 A GB 191417131A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- selenium
- bridges
- action
- methods
- 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
Links
Abstract
17,131. Kahan, S., [Yapolsky, N. S.]. July 20. Selenium cells.-A selenium cell is made by immersing a mould, comprising bridges a', k<1>, Fig. 5, with linear teeth a<2>, k<2>, into liquid or plastic selenium under diminished pressure and cooling the selenium under increased pressure, after which the base of the mould uniting the bridges a<1>, k<1> is removed either mechanically or chemically. In a modification the mould has curved teeth. The mould for the cell shown in Fig. 5 is made by electrolytically depositing about a core A' of a metal, alternate layers of this metal and another metal, as shown in Fig. 10. A section of the block so obtained is polished and acted upon by a solvent which reacts on one of the metals more than the other, thereby forming the linear teeth of the mould. The parts of the surface required to form the bridges are covered with a substance upon which the solvent does not act. The mould may be cast or stamped from a mould made as described above. Specification 3927/91, which describes a selenium cell the conducting-strips of whiich are separated by paper and connected alternately to bridge strips, is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191417131T | 1914-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191417131A true GB191417131A (en) | 1915-07-20 |
Family
ID=32374601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB191417131D Expired GB191417131A (en) | 1914-07-20 | 1914-07-20 | Improvements in Methods for Producing Devices consisting a Substances liable to Changes in their Ohmic Resistance under the Action of Light, especially Electric Light Sensitive Preparations and the like. |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB191417131A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2949539A (en) * | 1956-11-21 | 1960-08-16 | Baldwin Piano Co | Optical encoder |
| US3013232A (en) * | 1957-12-16 | 1961-12-12 | Hupp Corp | Control of response curves for photoelectric cells |
-
1914
- 1914-07-20 GB GB191417131D patent/GB191417131A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2949539A (en) * | 1956-11-21 | 1960-08-16 | Baldwin Piano Co | Optical encoder |
| US3013232A (en) * | 1957-12-16 | 1961-12-12 | Hupp Corp | Control of response curves for photoelectric cells |
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