GB172935A - - Google Patents
Info
- Publication number
- GB172935A GB172935A GB2901021A GB2901021A GB172935A GB 172935 A GB172935 A GB 172935A GB 2901021 A GB2901021 A GB 2901021A GB 2901021 A GB2901021 A GB 2901021A GB 172935 A GB172935 A GB 172935A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- spring
- torque
- magnetic
- flux
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
172,935. Siemens & Halske Akt.-Ges. Dec. 11, 1920, [Convention date]. Electromagnetic switches; relays.-Closed circuit relays with a spring or gravity control are made sensitive to very short interruptions of the maintaining current by arranging that such interruptions cause a movement which brings about a disappearance or reversal of the holding- torque. The lozengeshaped armature 2 is pivoted at 3 between the shaped poles of an electromagnet 1, a spring 6 tending to rotate the armature in an anti-clookwise direction, Fig. 1. The magnetic flux normally passes longitudinally along the armature, traversing the low reluctance air gaps between the adjacent co-operating surfaces 4, 5, thereby ensuring a stable position which is unaffected by mechanical vibration. On a momentary current interruption any motion of the armature caused by the spring 6 increases the air gaps at 4, 5 and diverts the flux transversely across the armature, Fig. 2, destroying the magnetic holding torque. A stop 2 arrests the armature in this position. In a modified form, Fig. 3, motion of the armature on interruption of the current causes a diversion of the flux producing a reversal of magnetic torque, the torque in the second position, Fig. 5, assisting the controlling spring 6. The armature and core are arranged to work at comparatively low values of magnetic saturation so that the shifting of all the lines of force in the pole-pieces at a determined place can be more easily effected. A bridging contact 7 carried by the armature joins pairs of stationary contacts 8, 9 in the two stable positions of the armature. The spring 6 may be replaced by an equivalent gravity control.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DES54994D DE371626C (en) | 1920-12-12 | 1920-12-12 | Quiescent current relay, in which the armature permanently drops in the event of temporary power interruptions |
US522116A US1426993A (en) | 1920-12-12 | 1921-12-13 | Closed-circuit relay |
Publications (1)
Publication Number | Publication Date |
---|---|
GB172935A true GB172935A (en) | 1923-02-01 |
Family
ID=25995426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2901021A Expired GB172935A (en) | 1920-12-12 | 1921-11-01 |
Country Status (4)
Country | Link |
---|---|
US (1) | US1426993A (en) |
DE (1) | DE371626C (en) |
FR (1) | FR542963A (en) |
GB (1) | GB172935A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2455049A (en) * | 1948-11-30 | Shockpkoof electromagnetic | ||
US2424308A (en) * | 1942-09-15 | 1947-07-22 | Westinghouse Electric Corp | Contactor |
US2553478A (en) * | 1944-10-26 | 1951-05-15 | Arrow Hart & Hegeman Electric | Rotary electromagnetic transfer switch |
US2619563A (en) * | 1945-08-07 | 1952-11-25 | Kesselring Fritz | Electromagnetic control device |
BE471339A (en) * | 1946-02-23 | |||
US2549323A (en) * | 1948-11-15 | 1951-04-17 | Mcmullen Elvin | Automatic electromagnetic switch |
NL178634B (en) * | 1952-05-29 | Philips Nv | DEVICE FOR DETECTING UNDESIRABLE SIGNAL COMBINATIONS OF TWO SIGNAL LAMPS FOR TRAFFIC LIGHTS. | |
NL183132B (en) * | 1954-01-25 | Greiner Kg | STACKABLE CLOSING SLEEVE AS WELL AS COMBINATION OF A WAREHOUSE FILLED WITH SUCH CLOSING SLEEVES. | |
DE1126994B (en) * | 1958-03-22 | 1962-04-05 | Electro Entpr L | Rotating armature electromagnet |
US4814428A (en) * | 1987-06-04 | 1989-03-21 | General Electric Company | Method of increasing the thermal stability of cyclic carbonate oligomers |
-
1920
- 1920-12-12 DE DES54994D patent/DE371626C/en not_active Expired
-
1921
- 1921-11-01 GB GB2901021A patent/GB172935A/en not_active Expired
- 1921-11-02 FR FR542963D patent/FR542963A/en not_active Expired
- 1921-12-13 US US522116A patent/US1426993A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE371626C (en) | 1923-03-17 |
US1426993A (en) | 1922-08-22 |
FR542963A (en) | 1922-08-24 |
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