GB170915A - Improvements in balanced electrical relays - Google Patents
Improvements in balanced electrical relaysInfo
- Publication number
- GB170915A GB170915A GB2229620A GB2229620A GB170915A GB 170915 A GB170915 A GB 170915A GB 2229620 A GB2229620 A GB 2229620A GB 2229620 A GB2229620 A GB 2229620A GB 170915 A GB170915 A GB 170915A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fulcra
- contacts
- protective arrangements
- electrical relays
- balanced electrical
- 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
- H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
- H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
- H01H47/14—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for differential operation of the relay
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Breakers (AREA)
Abstract
170,915. Railing, A. H., Garrard, C. C., and Wilson, W. July 27, 1920. Protective arrangements; electromagnetic and magnetic switches; contacts.-Balanced electric relays, for use in conjunction with protective arrangements of the type described in Specification 105,356, are constructed with solenoids E, E<1> mounted in a frame B, their plungers D, D, being hung from an arm A, supported on two fulcra C, C<1>. These fulcra are so disposed that the out-of-balance current must exceed a predetermined proportion of the total current passed before the energization of the coil affected is sufficiently strong to rock the bar A on its adjacent pivot, thereby completing a tripping-circuit through contacts F, G or F1, G1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2229620A GB170915A (en) | 1920-07-27 | 1920-07-27 | Improvements in balanced electrical relays |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2229620A GB170915A (en) | 1920-07-27 | 1920-07-27 | Improvements in balanced electrical relays |
Publications (1)
Publication Number | Publication Date |
---|---|
GB170915A true GB170915A (en) | 1921-10-27 |
Family
ID=10177070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2229620A Expired GB170915A (en) | 1920-07-27 | 1920-07-27 | Improvements in balanced electrical relays |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB170915A (en) |
-
1920
- 1920-07-27 GB GB2229620A patent/GB170915A/en not_active Expired
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB170915A (en) | Improvements in balanced electrical relays | |
US2427719A (en) | Polarized direct-current contactor | |
GB578134A (en) | Improvements in or relating to electro-magnetic switches | |
GB546404A (en) | Improvements in or relating to electromagnetic switches | |
GB727968A (en) | Improvements in or relating to electric calculating machines | |
GB196305A (en) | Improvements in and relating to electric relays and the like | |
GB272012A (en) | Improvements in or relating to electromagnetic switches operated by alternating current | |
US2134777A (en) | Solenoid | |
GB502943A (en) | Arrangement of contacts for electrical switches | |
GB219483A (en) | Improvements in or relating to electric switches for use in electric meters and for other purposes | |
GB208567A (en) | Improvements in and relating to electric switches | |
US1855322A (en) | Electromagnetic device | |
GB478110A (en) | Improvements in or relating to electrical relays | |
GB290620A (en) | ||
GB601838A (en) | Improvements in and relating to electric switches having arc-rupturing devices | |
GB838491A (en) | Improvements in and relating to alternating current electric relays of the inductiontype | |
GB844069A (en) | Direct current electromagnetic delayed-action relays | |
GB176126A (en) | Improvements in or relating to electromagnetic relays | |
GB275208A (en) | Improvements in and relating to electric circuit interrupters | |
GB231676A (en) | Improvements in or relating to electromagnetic relays | |
GB191410549A (en) | Improvements in Relays connected with Electric Signalling in Mines and the like. | |
GB359331A (en) | Improvements in and relating to electric transformers | |
GB185100A (en) | A new or improved electric relay | |
GB163027A (en) | Improvements in electric relay devices | |
GB217396A (en) | Improvements in or relating to electric distribution systems and switches therefor |