GB537195A - Improvements in or relating to circuit breakers and the like electro-magnetically operated switches - Google Patents
Improvements in or relating to circuit breakers and the like electro-magnetically operated switchesInfo
- Publication number
- GB537195A GB537195A GB361340A GB361340A GB537195A GB 537195 A GB537195 A GB 537195A GB 361340 A GB361340 A GB 361340A GB 361340 A GB361340 A GB 361340A GB 537195 A GB537195 A GB 537195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- mercury
- contact
- electro
- relating
- 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
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 abstract 4
- 229910052753 mercury Inorganic materials 0.000 abstract 4
- 230000035939 shock Effects 0.000 abstract 2
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
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
- H01H71/1054—Means for avoiding unauthorised release
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Keying Circuit Devices (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
537,195. Electromagnetic switches; mercury switches. WHIPP & BOURNE Ltd., and WHIPP, F. Feb. 27, 1940, No. 3613. [Class 38 (v)] The pressure between the contacts of an electromagnetic switch is increased, when the switch is subjected to a sudden shock, by the operation of an auxiliary switch also subject to the shock. The auxiliary switch may be a mercury switch, Fig. 3 the mercury in which is adapted to be displaced so as to bridge the gap between a metal casing 16 and a contact 18. The channel between the casing 16 and contact 18 is small so that mercury will flow through it slowly and contact will be maintained for a time. The operation of the auxiliary switch preferably serves to bridge at 15 an economy resistance such as 14 Fig. 2, which is in series with the coil 9 holding the main contacts 11, 12 of the electromagnetic switch closed, thus increasing the holding force. Specifications 214,667, [Class 38 (v)], 521,073, 521,074 and 525,510 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB361340A GB537195A (en) | 1940-02-27 | 1940-02-27 | Improvements in or relating to circuit breakers and the like electro-magnetically operated switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB361340A GB537195A (en) | 1940-02-27 | 1940-02-27 | Improvements in or relating to circuit breakers and the like electro-magnetically operated switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB537195A true GB537195A (en) | 1941-06-12 |
Family
ID=9761623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB361340A Expired GB537195A (en) | 1940-02-27 | 1940-02-27 | Improvements in or relating to circuit breakers and the like electro-magnetically operated switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB537195A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1173754B (en) * | 1959-07-18 | 1964-07-09 | Continental Elektro Ind Ag | Arrangement to prevent the transfer of movements generated by impact from shock-sensitive parts to release parts |
| EP0121963A1 (en) * | 1983-03-10 | 1984-10-17 | SACE S.p.A. Costruzioni Elettromeccaniche | Automatic locking device for linkages subjected to undesirable mechanical stresses, applicable in particular to electrical switches |
-
1940
- 1940-02-27 GB GB361340A patent/GB537195A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1173754B (en) * | 1959-07-18 | 1964-07-09 | Continental Elektro Ind Ag | Arrangement to prevent the transfer of movements generated by impact from shock-sensitive parts to release parts |
| EP0121963A1 (en) * | 1983-03-10 | 1984-10-17 | SACE S.p.A. Costruzioni Elettromeccaniche | Automatic locking device for linkages subjected to undesirable mechanical stresses, applicable in particular to electrical switches |
| US4644181A (en) * | 1983-03-10 | 1987-02-17 | Sace S.P.A. Costruzioni Elettromeccaniche | Automatic locking device for linkages subjected to undesirable mechanical stresses, applicable in particular to electrical switches |
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