GB497195A - Improvements in and relating to electric switches responsive to direction of rotary motion - Google Patents
Improvements in and relating to electric switches responsive to direction of rotary motionInfo
- Publication number
- GB497195A GB497195A GB10538/38A GB1053838A GB497195A GB 497195 A GB497195 A GB 497195A GB 10538/38 A GB10538/38 A GB 10538/38A GB 1053838 A GB1053838 A GB 1053838A GB 497195 A GB497195 A GB 497195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shaft
- crank
- levers
- april
- rest
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
497,195. Actuation of switches; control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. April 6, 1938, No. 10538. Convention date, April 6, 1937. [Classes 38 (iii) and 38 (v)] A switch responsive to the direction of rotation of a shaft 14 is operated by the limited rotary displacement of a coaxial shaft 22 which is yieldably, coupled, e.g. by a magnetic coupling to the shaft 14. The shaft 22 carries an aluminium member 18 movable in the gap between a magnet 17 and a magnetic field member 21. The members 17, 21 rotate with the shaft 14 so that the shaft 22 tends to follow them. The shaft 22 carries a crank 19 having a pin 33 which is embraced bv two levers 36, 37 pressed towards each other by springs 34, 35. The levers also embrace a stop 40 and thus tend to hold the crank 19 in the central position shown in Fig. 2. When the shaft 14 rotates, the force acting on the shaft 22 causes the crank 19 to move in one direction or the other and the pin 33, which moves in a slot 32 in another lever 28, operates the lever 28 to bring a contact arm 26 into engagement with a contact 30 or 31. The invention is specially applicable to electric motors which are brought quickly to rest by reversing the connections, the above switch serving to disconnect the motor immediately it has come to rest and before it reverses. Specification 424,746, [Group II], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US497195XA | 1937-04-06 | 1937-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB497195A true GB497195A (en) | 1938-12-14 |
Family
ID=21961320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10538/38A Expired GB497195A (en) | 1937-04-06 | 1938-04-06 | Improvements in and relating to electric switches responsive to direction of rotary motion |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB497195A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121242A (en) * | 1982-05-10 | 1983-12-14 | Kollmorgen Tech Corp | Electric motor with a capacitive position sensor |
-
1938
- 1938-04-06 GB GB10538/38A patent/GB497195A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2121242A (en) * | 1982-05-10 | 1983-12-14 | Kollmorgen Tech Corp | Electric motor with a capacitive position sensor |
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