GB717860A - Improvements in or relating to apparatus including a photo-electric cell - Google Patents
Improvements in or relating to apparatus including a photo-electric cellInfo
- Publication number
- GB717860A GB717860A GB449852A GB449852A GB717860A GB 717860 A GB717860 A GB 717860A GB 449852 A GB449852 A GB 449852A GB 449852 A GB449852 A GB 449852A GB 717860 A GB717860 A GB 717860A
- Authority
- GB
- United Kingdom
- Prior art keywords
- photo
- cell
- housing
- feb
- window
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
717,860. Photocell housing. GENERAL ELECTRIC CO., Ltd., and VARNEY, K. H. Feb. 4, 1953 [Feb. 20, 1952], No. 4498/52. Class 40 (3) A housing for photo-cell equipment used in a hot, dirty atmosphere comprises two concentric cylinders 12, 13 (Fig. 1) forming a jacket round the photo-cell 23 for the passage of cooling liquid. The outer housing 13 has a window 18 of armour plate, heat resisting glass at one end, and a gland 31 at the other end for carrying leads to the photo-cell 23 and a valve 24 assembled in the inner cylinder 12, the photo-cell being held by a helical spring 27 against a tapered seating 26. The output of the photo-cell 23 biases the A.C. fed valve 24, whose anode current controls a relay 33 (Fig. 2) to indicate in an external circuit an increase or decrease in bias, as predetermined, produced by admitting or cutting-off light respectively to the photo-cell via the window 18.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB449852A GB717860A (en) | 1952-02-20 | 1952-02-20 | Improvements in or relating to apparatus including a photo-electric cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB449852A GB717860A (en) | 1952-02-20 | 1952-02-20 | Improvements in or relating to apparatus including a photo-electric cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB717860A true GB717860A (en) | 1954-11-03 |
Family
ID=9778323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB449852A Expired GB717860A (en) | 1952-02-20 | 1952-02-20 | Improvements in or relating to apparatus including a photo-electric cell |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB717860A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2871372A (en) * | 1954-12-16 | 1959-01-27 | Siemens Ag Albis | Infrared image converter apparatus |
| US3241595A (en) * | 1963-04-22 | 1966-03-22 | Combustion Eng | Flame detector cooling means |
| GB2161938A (en) * | 1984-07-13 | 1986-01-22 | Centro Speriment Metallurg | Probe for detection of surface defects in metal bodies at high temperatures |
-
1952
- 1952-02-20 GB GB449852A patent/GB717860A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2871372A (en) * | 1954-12-16 | 1959-01-27 | Siemens Ag Albis | Infrared image converter apparatus |
| US3241595A (en) * | 1963-04-22 | 1966-03-22 | Combustion Eng | Flame detector cooling means |
| GB2161938A (en) * | 1984-07-13 | 1986-01-22 | Centro Speriment Metallurg | Probe for detection of surface defects in metal bodies at high temperatures |
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