GB700549A - Improvements in speed control devices for electric motors - Google Patents
Improvements in speed control devices for electric motorsInfo
- Publication number
- GB700549A GB700549A GB10653/52A GB1065352A GB700549A GB 700549 A GB700549 A GB 700549A GB 10653/52 A GB10653/52 A GB 10653/52A GB 1065352 A GB1065352 A GB 1065352A GB 700549 A GB700549 A GB 700549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spring
- speed
- bias
- switch
- centrifugal
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/066—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current using a periodic interrupter, e.g. Tirrill regulator
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
700,549. Centrifugal governors. BRITISH THOMSON-HOUSTON CO., Ltd. April 28, 1952 [April 28, 1951], No. 10653/52. Class 57 [Also in Group XXXVII] In a speed responsive switch, such as that of Specification 675,390, for governing the speed of an electric motor, the actuated element 15 of a centrifugal governor 11 is biased by a spring 14 against a switch member 4 which is subject to spring bias opposite to and greater than the bias of the spring 14. The blade spring switch member 4 carries a contact 3 normally engaging a fixed contact 2 under the bias of a spring 5 interposed between movable insulating members 6, 7. A speed control knob 10 carrying a cam 9 engaging the member 6 may be rotated to adjust the compression of the spring 5 to determine the speed at which the contacts are opened. The governor unit 11 has a member 16 fixed to a driven shaft 12 and provided with recesses 17 containing balls 118, which under centrifugal action urge the actuating element 15 away from the member 16 to open the contacts at the desired speed. The recesses 17 may be inclined in the direction of rotation so as to render the unit responsive to acceleration as well as to speed. It is stated that the spring 14 in maintaining the element 15 against the switch member 4 minimizes bouncing and so ensures stable operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US700549XA | 1951-04-28 | 1951-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB700549A true GB700549A (en) | 1953-12-02 |
Family
ID=22092830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10653/52A Expired GB700549A (en) | 1951-04-28 | 1952-04-28 | Improvements in speed control devices for electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB700549A (en) |
-
1952
- 1952-04-28 GB GB10653/52A patent/GB700549A/en not_active Expired
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