GB210896A - Improvements in automatic electric circuit breakers - Google Patents
Improvements in automatic electric circuit breakersInfo
- Publication number
- GB210896A GB210896A GB31230/22A GB3123022A GB210896A GB 210896 A GB210896 A GB 210896A GB 31230/22 A GB31230/22 A GB 31230/22A GB 3123022 A GB3123022 A GB 3123022A GB 210896 A GB210896 A GB 210896A
- Authority
- GB
- United Kingdom
- Prior art keywords
- loop
- current
- contact
- shunt
- secured
- 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
- H01H71/18—Electrothermal mechanisms with expanding rod, strip, or wire
Landscapes
- Thermally Actuated Switches (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
- Breakers (AREA)
Abstract
210,896. Clossmann, J. von, and Halberstadt, H. Nov. 15, 1922. Switches, partly electromagnetic; thermal switches; magnetic blow-outs.- A thermal switch, adapted to be released by hand, or by the heating effect of the current, comprises a strip of spring carrying at its free end a contact engaging a fixed contact and adapted to expand longitudinally to break circuit. As shown in Fig. 1, the expanding strip a is secured at b and sprung against a fixed contact c, from which it may be moved also by hand, or by a finger f moving the contact c, as shown in Fig. 2. The wire a may have a loop e of one or more convolutions whereby it is secured, and the magnetic effect of the current assists the opening movement; the stationary end b may engage a rock g for setting the tension. For varying the maximum current, a resistance may shunt the loop e and a fuse may also be incorporated. For use with alternating current, a choking coil or condenser may shunt the loop e. The dimensions of the loop itself may be varied to vary the time taken for opening the circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEC30942D DE395782C (en) | 1921-07-26 | 1921-07-26 | Electrical safety switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB210896A true GB210896A (en) | 1924-02-14 |
Family
ID=10319979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31230/22A Expired GB210896A (en) | 1921-07-26 | 1922-11-15 | Improvements in automatic electric circuit breakers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US1471241A (en) |
| DE (1) | DE395782C (en) |
| FR (1) | FR558798A (en) |
| GB (1) | GB210896A (en) |
-
1921
- 1921-07-26 DE DEC30942D patent/DE395782C/en not_active Expired
-
1922
- 1922-11-15 GB GB31230/22A patent/GB210896A/en not_active Expired
- 1922-11-17 FR FR558798D patent/FR558798A/en not_active Expired
- 1922-12-16 US US607442A patent/US1471241A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE395782C (en) | 1924-05-22 |
| FR558798A (en) | 1923-09-03 |
| US1471241A (en) | 1923-10-16 |
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