GB524816A - Improvements in and relating to electromagnetic switches - Google Patents
Improvements in and relating to electromagnetic switchesInfo
- Publication number
- GB524816A GB524816A GB3991/39A GB399139A GB524816A GB 524816 A GB524816 A GB 524816A GB 3991/39 A GB3991/39 A GB 3991/39A GB 399139 A GB399139 A GB 399139A GB 524816 A GB524816 A GB 524816A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- armature
- feb
- air gap
- close
- 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
- H01H50/86—Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
- H01H50/88—Mechanical means, e.g. dash-pot
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
524,816. Electromagnetic switches. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 7, 1939, No. 3991. Convention date, Feb. 8, 1938. [Class 38 (v)] In an electromagnetically - con - trolled self starter, wherein main contacts 2, 3 are first closed and then, after a time delay, step contacts 27, 28, 29, 30. all the contacts are operated by one magnet 11 which has two armatures 6, 13 connected in series in the main magnetic flux. the armature 6 having a large air gap and responding without time lag to close the main contacts and the armature 13 having a small air gap and operating under the influence of a checking mechanism 20 to close the step contacts. The armature 13 is connected by a link 15 to the pivoted contact-carrying member 17 which is retarded in its movement by a rack 19 engaging a pinion 21 of the checking mechanism 20. The movable contacts, the armature 6 and the member 17 are mounted on knife-edge bearings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE524816X | 1938-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB524816A true GB524816A (en) | 1940-08-15 |
Family
ID=6552416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3991/39A Expired GB524816A (en) | 1938-02-08 | 1939-02-07 | Improvements in and relating to electromagnetic switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB524816A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156156A (en) * | 1984-03-15 | 1985-10-02 | Hager Electro Gmbh & Co | Electromagnetic switch arrangement |
-
1939
- 1939-02-07 GB GB3991/39A patent/GB524816A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2156156A (en) * | 1984-03-15 | 1985-10-02 | Hager Electro Gmbh & Co | Electromagnetic switch arrangement |
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