GB166213A - Improvements in or relating to electro-magnetic devices for use with alternating currents - Google Patents
Improvements in or relating to electro-magnetic devices for use with alternating currentsInfo
- Publication number
- GB166213A GB166213A GB838819A GB838819A GB166213A GB 166213 A GB166213 A GB 166213A GB 838819 A GB838819 A GB 838819A GB 838819 A GB838819 A GB 838819A GB 166213 A GB166213 A GB 166213A
- Authority
- GB
- United Kingdom
- Prior art keywords
- armature
- circuited
- poles
- 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
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
- H01H47/04—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 holding armature in attracted position, e.g. when initial energising circuit is interrupted; for maintaining armature in attracted position, e.g. with reduced energising current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnets (AREA)
Abstract
166,213. Switchgear & Cowans, Ltd., Ogley, D. H., and Neep, G. H. April 3, 1919. Electromagnets.-An electromagnet excited by an alternating current for operating electric switches and the like is arranged in series with a non-inductive resistance and is provided with a core or armature which makes direct contact with the pole or poles without the intervention of non-magnetic material. In the arrangement shown in Fig. 2 the armature h is pivoted and comes directly in contact with the poles d' and d<2> from which it is withdrawn by a spring f when the current falls below a certain value. A non- inductive resistance, e.g. a lamp e is arranged in series with the magnet coil a and can be automatically short-circuited when the armature leaves the magnet so that on the current again rising to its normal value the armature may be attracted. For this purpose a switch j is provided, operated by a member k on the armature. In a modification the resistance is short-circuited by hand. Reference has been directed by the Comptroller to Specifications 11429/00, 23831/10, and 28864/12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB838819A GB166213A (en) | 1919-04-03 | 1919-04-03 | Improvements in or relating to electro-magnetic devices for use with alternating currents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB838819A GB166213A (en) | 1919-04-03 | 1919-04-03 | Improvements in or relating to electro-magnetic devices for use with alternating currents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB166213A true GB166213A (en) | 1921-07-11 |
Family
ID=9851561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB838819A Expired GB166213A (en) | 1919-04-03 | 1919-04-03 | Improvements in or relating to electro-magnetic devices for use with alternating currents |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB166213A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046351A (en) * | 1972-01-03 | 1977-09-06 | Lang Gregor L | Solenoid fluid valves |
| US4088975A (en) * | 1972-01-03 | 1978-05-09 | Lang Gregor L | Alternating current solenoids |
| US4262877A (en) * | 1975-05-09 | 1981-04-21 | Lang Gregor L | Solenoid fluid valves |
-
1919
- 1919-04-03 GB GB838819A patent/GB166213A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4046351A (en) * | 1972-01-03 | 1977-09-06 | Lang Gregor L | Solenoid fluid valves |
| US4088975A (en) * | 1972-01-03 | 1978-05-09 | Lang Gregor L | Alternating current solenoids |
| US4262877A (en) * | 1975-05-09 | 1981-04-21 | Lang Gregor L | Solenoid fluid valves |
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