GB436010A - Improvements in thermally-released automatic electric circuit-breakers - Google Patents
Improvements in thermally-released automatic electric circuit-breakersInfo
- Publication number
- GB436010A GB436010A GB1063034A GB1063034A GB436010A GB 436010 A GB436010 A GB 436010A GB 1063034 A GB1063034 A GB 1063034A GB 1063034 A GB1063034 A GB 1063034A GB 436010 A GB436010 A GB 436010A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- arms
- breakers
- strips
- thermally
- 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
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
- H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature
Landscapes
- Control Of Resistance Heating (AREA)
- Thermally Actuated Switches (AREA)
Abstract
436,010. Automatic circuit-breakers. ELLISON, Ltd., G., and ANDERSON, J., Wellhead Lane Works, Perry Barr, Birmingham. April 9, 1934, No. 10630. [Class 38 (v)] A thermally released circuit-breaker compensated for variations of external temperature comprises a switch arm e pivoted at b and pressed upwards by a spring d and held in the closed position shown by a notch j in an arm g adjustably connected by screws k to an arm h, the arms g, h pivoting about a point i and the arm h being fixed at o to a bimetallic strip n connected by a link s to a bimetallic strip p fixed at the lower end and heated by a current-carrying coil t. Variations of external temperature cause equal bending of the strips n, p and no movement of the arms h, g. Sufficient heating of the strip p by the coil t causes the arms h, g to move to the right, releasing the switch arm e which thereupon moves to the open position. Resetting is effected by a plunger u. The bimetallic members p, n in the form shown each comprise a pair of strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1063034A GB436010A (en) | 1934-04-09 | 1934-04-09 | Improvements in thermally-released automatic electric circuit-breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1063034A GB436010A (en) | 1934-04-09 | 1934-04-09 | Improvements in thermally-released automatic electric circuit-breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB436010A true GB436010A (en) | 1935-10-03 |
Family
ID=9971409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1063034A Expired GB436010A (en) | 1934-04-09 | 1934-04-09 | Improvements in thermally-released automatic electric circuit-breakers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB436010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2863023A (en) * | 1956-01-27 | 1958-12-02 | Gen Electric | Bimetallic strip thermally responsive device |
| US2908786A (en) * | 1957-01-04 | 1959-10-13 | Arrow Hart & Hegeman Electric | Overload relay switch with ambient temperature compensation |
| US2922008A (en) * | 1957-07-31 | 1960-01-19 | Westinghouse Electric Corp | Circuit breaker |
-
1934
- 1934-04-09 GB GB1063034A patent/GB436010A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2863023A (en) * | 1956-01-27 | 1958-12-02 | Gen Electric | Bimetallic strip thermally responsive device |
| US2908786A (en) * | 1957-01-04 | 1959-10-13 | Arrow Hart & Hegeman Electric | Overload relay switch with ambient temperature compensation |
| US2922008A (en) * | 1957-07-31 | 1960-01-19 | Westinghouse Electric Corp | Circuit breaker |
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