GB208567A - Improvements in and relating to electric switches - Google Patents
Improvements in and relating to electric switchesInfo
- Publication number
- GB208567A GB208567A GB31779/23A GB3177923A GB208567A GB 208567 A GB208567 A GB 208567A GB 31779/23 A GB31779/23 A GB 31779/23A GB 3177923 A GB3177923 A GB 3177923A GB 208567 A GB208567 A GB 208567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contactors
- series
- another
- motor
- group
- 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
- H01H51/00—Electromagnetic relays
- H01H51/02—Non-polarised relays
- H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
- H01H51/12—Armature is movable between two limit positions of rest and is moved in both directions due to the energisation of one or the other of two electromagnets without the storage of energy to effect the return movement
-
- 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
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Stopping Of Electric Motors (AREA)
- Electromagnets (AREA)
Abstract
208,567. British Thomson-Houston Co., Ltd., (Assignees of Carichoff, E. R.). Dec. 18, 1922,. [Convention date]. Void [Published under Sect. 91 of the Act]. Electromagnetic switches for use as electric motorstarting contactors, or other purposes are constructed so that each switch or contactor is composed of two electromagnets 10, 11 with mutually independent fluxes, mounted upon a common base 23 and acting oppositely upon a common pivoted member 13. When a group of such contactors is used for cutting out resistance in starting a motor, all the windings of the magnet 11 are connected in series with one another across the supply 22, and those of the magnets 10 are connected in series with one another across the motor armature A, in order that the contactors may respond to rising counter electromotive force at values differing by approximately constant amounts from the supply voltage, irrespective of fluctuations affecting the whole group, and of temperature changes of individual contactors.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US607576A US1648674A (en) | 1922-12-18 | 1922-12-18 | Electromagnetic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB208567A true GB208567A (en) | 1924-10-23 |
Family
ID=24432876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31779/23A Expired GB208567A (en) | 1922-12-18 | 1923-12-18 | Improvements in and relating to electric switches |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1648674A (en) |
| GB (1) | GB208567A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2426608A (en) * | 1942-07-08 | 1947-09-02 | Sperry Gyroscope Co Inc | Control unit for hydraulic servomotors |
| US2439930A (en) * | 1942-10-10 | 1948-04-20 | Westinghouse Electric Corp | Differential relay and restraint magnet therefor |
| US4522122A (en) * | 1983-05-03 | 1985-06-11 | Ncr Canada Ltd - Ncr Canada Ltee | Fast impact hammer for high speed printer |
-
1922
- 1922-12-18 US US607576A patent/US1648674A/en not_active Expired - Lifetime
-
1923
- 1923-12-18 GB GB31779/23A patent/GB208567A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US1648674A (en) | 1927-11-08 |
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