GB591480A - Improvements in and relating to electric relays - Google Patents
Improvements in and relating to electric relaysInfo
- Publication number
- GB591480A GB591480A GB11728/45A GB1172845A GB591480A GB 591480 A GB591480 A GB 591480A GB 11728/45 A GB11728/45 A GB 11728/45A GB 1172845 A GB1172845 A GB 1172845A GB 591480 A GB591480 A GB 591480A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- armature
- bolt
- sleeve
- copper
- 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
- H01H50/00—Details of electromagnetic relays
- H01H50/44—Magnetic coils or windings
- H01H50/46—Short-circuited conducting sleeves, bands, or discs
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Breakers (AREA)
Abstract
591,480. Electromagnetic relays. BRITISH THOMSON-HOUSTON CO., Ltd. May 10, 1945, No. 11728. Convention date, May 10, 1944. [Class 38(v)] An electromagnetic relay has a U-shaped core which is enclose( throughout its lengtl in a sleeve of copper or other non-magnetic conducting materia in order to delay the flux decay when the energizing current ceases. The core is made by first placing a copper sleeve over a straight iron bar and bending the two together. When the bar is circular its diameter may be 0.6 of the external diameter of the sleeve. Fig. 1 shows a relay having a U-shaped core 2 covered throughout its length with a copper sleeve 3. Windings 19, 20 on the limbs of the core may be wound in the same or opposite directions. A pole piece 2a is attached by a bolt 4 to one end of the core and a rocking armature 5 is pivoted at 6 and carries a pair of contacts 13 which co-operate with two fixed contacts 11. The gap between the armature and core poles can be adjusted by a bolt 18 and the armature is biased away from the pole pieces by a spring 14 adjustable by a bolt 15. A brass or other non-magnetic shim may be introduced between the pole piece 2a and the adjacent end of the core to reduce the residual flux in the magnetic circuit and so permit armature drop-out at a low flux value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US534960A US2422986A (en) | 1944-05-10 | 1944-05-10 | Time delay relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB591480A true GB591480A (en) | 1947-08-19 |
Family
ID=24132233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB11728/45A Expired GB591480A (en) | 1944-05-10 | 1945-05-10 | Improvements in and relating to electric relays |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2422986A (en) |
| GB (1) | GB591480A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2760026A (en) * | 1951-01-08 | 1956-08-21 | Clare & Co C P | Relay |
| NL105252C (en) * | 1956-02-13 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1222159A (en) * | 1915-07-03 | 1917-04-10 | Michisuye Suwa | Electric bell. |
| US1600088A (en) * | 1922-12-05 | 1926-09-14 | Burstyn Walther | Mechanical rectifier |
| GB498714A (en) * | 1936-12-19 | 1939-01-12 | British Thomson Houston Co Ltd | Improvements in and relating to permanent magnets |
| US2269839A (en) * | 1938-10-22 | 1942-01-13 | Leonard A Young | Method of forming metallic articles |
| GB543683A (en) * | 1939-11-04 | 1942-03-09 | Westinghouse Electric Int Co | Improvements in or relating to permanent magnets for electrical measuring instruments |
| US2238277A (en) * | 1940-02-09 | 1941-04-15 | Miller Maurice | Combination tube closure and electrode for neon tubes |
-
1944
- 1944-05-10 US US534960A patent/US2422986A/en not_active Expired - Lifetime
-
1945
- 1945-05-10 GB GB11728/45A patent/GB591480A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2422986A (en) | 1947-06-24 |
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