GB423660A - Improvements in and relating to electric thermal switches - Google Patents
Improvements in and relating to electric thermal switchesInfo
- Publication number
- GB423660A GB423660A GB15866/33A GB1586633A GB423660A GB 423660 A GB423660 A GB 423660A GB 15866/33 A GB15866/33 A GB 15866/33A GB 1586633 A GB1586633 A GB 1586633A GB 423660 A GB423660 A GB 423660A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- contact
- spring
- june
- thermal switches
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/60—Means for producing snap action
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
423,660. Thermal switches. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Getchell, B. E.; Plainville, Connecticut, U.S.A.) June 1, 1933, No. 15866. Convention date, June 6, 1932. [Class 38 (v)] A thermal switch comprises a bimetallic strip 7 fixed at one end to a plate 8. The free end carries a contact 9 which is free to move between stops 10, 11, one or both of which may also be contacts. The middle of the strip is slotted and between the ends of the slot is mounted a helical tension spring 12. Thus in the position shown, the spring assists the strip in making contact with contact 10. When the strip is heated it bends until it has passed the position in which it is straight, when the spring 12 causes it to snap rapidly on to contact 11. The plate 8 is adjustable by means of screws 16, 17 to vary the temperature at which the switch operates.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US615524A US1919327A (en) | 1932-06-06 | 1932-06-06 | Thermostatic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB423660A true GB423660A (en) | 1935-02-01 |
Family
ID=24465767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB15866/33A Expired GB423660A (en) | 1932-06-06 | 1933-06-01 | Improvements in and relating to electric thermal switches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1919327A (en) |
| GB (1) | GB423660A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2626373A (en) * | 1949-08-02 | 1953-01-20 | Echlin Mfg Company | Switch for relay circuits for automobiles or the like |
| GB1103101A (en) * | 1963-08-29 | 1968-02-14 | Smiths Industries Ltd | Improvements in or relating to snap action electric switches |
| US3256403A (en) * | 1964-01-02 | 1966-06-14 | Gen Electric | Switch relay for use in dynamoelectric machines |
| US5320162A (en) * | 1992-11-05 | 1994-06-14 | Seaman William E | Single pole double throw thermostat for narrow range temperature regulation |
-
1932
- 1932-06-06 US US615524A patent/US1919327A/en not_active Expired - Lifetime
-
1933
- 1933-06-01 GB GB15866/33A patent/GB423660A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1919327A (en) | 1933-07-25 |
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