GB176333A - Improvements in electric relays - Google Patents
Improvements in electric relaysInfo
- Publication number
- GB176333A GB176333A GB2396/22A GB239622A GB176333A GB 176333 A GB176333 A GB 176333A GB 2396/22 A GB2396/22 A GB 2396/22A GB 239622 A GB239622 A GB 239622A GB 176333 A GB176333 A GB 176333A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contact
- bimetallic
- circuit
- heated
- sufficiently heated
- 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
Landscapes
- Thermally Actuated Switches (AREA)
- Breakers (AREA)
Abstract
176,333. Metropolitan - Vickers Electrical Co., Ltd., (Assignees of Smith, B. H.). Feb. 26, 1921, [Convention date]. Thermal switches.-A thermal relay of the cartridge type has a bimetallic member, one portion only of which is traversed by the circuit current, the other portion controlling a contact. The bimetallic member 12 comprises a wide portion 14 and a narrow portion 15. The part 14 is heated by the current and the part 15 by conduction from the part 14. The part 15 when sufficiently heated is adapted to break contact with a stationary contact 11, so de-energizing the electromagnet 4 and rupturing the circuit 2. The contact 11 is carried adjustably by the insulating case 7, which is fitted with metal ferrules 8, 9. Terminals 8<a>, 9<a> support the conducting tube 10 to which also is rigidly attached the part 14. The main circuit is then 9<a>-12-14-10-8<a>. In another type, the contact 11 is adapted to engage the member 12 when sufficiently heated. Preferably the member 12 consists of a plurality of thin bimetallic strips secured together.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US176333XA | 1921-02-26 | 1921-02-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB176333A true GB176333A (en) | 1922-03-30 |
Family
ID=21783676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2396/22A Expired GB176333A (en) | 1921-02-26 | 1922-01-26 | Improvements in electric relays |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE368031C (en) |
| GB (1) | GB176333A (en) |
-
1922
- 1922-01-26 GB GB2396/22A patent/GB176333A/en not_active Expired
- 1922-01-31 DE DEW60391D patent/DE368031C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE368031C (en) | 1923-01-30 |
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