GB235188A - Improvements in electric switches - Google Patents
Improvements in electric switchesInfo
- Publication number
- GB235188A GB235188A GB14346/25A GB1434625A GB235188A GB 235188 A GB235188 A GB 235188A GB 14346/25 A GB14346/25 A GB 14346/25A GB 1434625 A GB1434625 A GB 1434625A GB 235188 A GB235188 A GB 235188A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rod
- switch
- lever
- manually
- presses
- 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
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
- H01H73/24—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by lever
Landscapes
- Thermally Actuated Switches (AREA)
Abstract
235,188. British Thomson-Houston Co., Ltd., (Assignees of Hall, C. I.). June 3, 1924, [Convention date]. Automatic circuitbreakers. - A snapa c t i o n switch is adapted to be manually closed and either manually opened or automatically opened upon the occurrence of excess current by the movement of a thermal latch. The operating lever 17 when moved to the position shown presses down a rod 18 against the action of a spring 20 the rod 18 being eventually held against return by a bimetallic element 21 slipping over a collar 31 on the rod. A heating coil 26 is in series with the switch contacts and upon overload the element 21 bends and releases the rod 18 which presses the lever 17 into the switch open ' position.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US717649A US1683132A (en) | 1924-06-03 | 1924-06-03 | Electric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB235188A true GB235188A (en) | 1925-10-29 |
Family
ID=24882905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14346/25A Expired GB235188A (en) | 1924-06-03 | 1925-06-02 | Improvements in electric switches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1683132A (en) |
| GB (1) | GB235188A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2425623A (en) * | 1943-02-04 | 1947-08-12 | Cutler Hammer Inc | Protective device |
| US2456945A (en) * | 1944-05-16 | 1948-12-21 | Westinghouse Electric Corp | Relay |
| US2583174A (en) * | 1946-08-14 | 1952-01-22 | Hi Voltage Equipment Company | Electric switch or circuit breaker |
| US2519297A (en) * | 1947-03-27 | 1950-08-15 | Westinghouse Electric Corp | Circuit breaker |
| US3211955A (en) * | 1960-03-29 | 1965-10-12 | Westinghouse Electric Corp | Circuit interrupting device |
-
1924
- 1924-06-03 US US717649A patent/US1683132A/en not_active Expired - Lifetime
-
1925
- 1925-06-02 GB GB14346/25A patent/GB235188A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1683132A (en) | 1928-09-04 |
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