GB298641A - Improvements in and relating to centrifugal electric switches - Google Patents
Improvements in and relating to centrifugal electric switchesInfo
- Publication number
- GB298641A GB298641A GB29274/28A GB2927428A GB298641A GB 298641 A GB298641 A GB 298641A GB 29274/28 A GB29274/28 A GB 29274/28A GB 2927428 A GB2927428 A GB 2927428A GB 298641 A GB298641 A GB 298641A
- Authority
- GB
- United Kingdom
- Prior art keywords
- weights
- decreases
- commutator
- until
- tendency
- 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
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K27/00—AC commutator motors or generators having mechanical commutator
- H02K27/04—AC commutator motors or generators having mechanical commutator having single-phase operation in series or shunt connection
- H02K27/10—AC commutator motors or generators having mechanical commutator having single-phase operation in series or shunt connection with switching devices for different modes of operation, e.g. repulsion-induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Current Collectors (AREA)
Abstract
298,641. British Thomson-Houston Co., Ltd., (Assignees of Schild, C. A.). Oct. 13, 1927, [Convention date]. Alternating-current commutator machines. - A centrifugal switch, which will operate with a snap action and have no tendency to return until its speed of rotation has substantially decreased, uses rotatable weights acting on a spring member of such form that its resistance to the centrifugal force of the weights decreases as it is deflected. As applied to a short-circuiting device for the commutator of a repulsion-induction motor, an annular spring member 12 with a concave surface is secured to the shaft 11 between collars 13, 14 and is flexed by weights 18 attached to itself. A spring 15 between a spacing washer 15<a> and the collar 13 resists flexing of the member 12. In operation, as the centrifugal force of the weights 18 decreases the concavity of the member 12, the resistance of the latter decreases until it is snapped into engagement with the contact surfaces of the commutator segments 10<a>, and there is no tendency for the switch to open until the speed has decreased considerably.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US298641XA | 1927-10-13 | 1927-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB298641A true GB298641A (en) | 1929-07-04 |
Family
ID=21851309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29274/28A Expired GB298641A (en) | 1927-10-13 | 1928-10-11 | Improvements in and relating to centrifugal electric switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB298641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2686501A (en) * | 1950-10-25 | 1954-08-17 | Syntron Co | Ignition speed cutout for internal-combustion percussion tools |
-
1928
- 1928-10-11 GB GB29274/28A patent/GB298641A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2686501A (en) * | 1950-10-25 | 1954-08-17 | Syntron Co | Ignition speed cutout for internal-combustion percussion tools |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB634171A (en) | Improvements in rotary electric switches | |
| GB298641A (en) | Improvements in and relating to centrifugal electric switches | |
| GB696625A (en) | Improvements in or relating to governor devices for telephone calling dials | |
| GB642188A (en) | Improvements in or relating to a windshield cleaner | |
| US2438810A (en) | Centrifugally operated switch | |
| US2611602A (en) | Centrifugal operating device | |
| US1399991A (en) | Short-circuiting means for armature-windings | |
| US1982000A (en) | Electrical speed governor | |
| US1515531A (en) | Timer | |
| US2414470A (en) | Circuit control device | |
| US3058355A (en) | Control apparatus | |
| GB758992A (en) | Improvements in or relating to speed-responsive electric switches | |
| US2688665A (en) | Electrical contact device | |
| US2210687A (en) | Centrifugal device | |
| GB672740A (en) | Improvements in and relating to rotary cam actuated electrical switches | |
| US1415496A (en) | Governor for electric circuits | |
| GB500778A (en) | Improvements in and relating to centrifugal electric switches | |
| US2573968A (en) | Centrifugal switch | |
| US2767273A (en) | Centrifugal switch mechanism | |
| GB480351A (en) | Improvements in speed-responsive switches | |
| GB928437A (en) | Improvements relating to speed-responsive electric switches | |
| US1779006A (en) | Short circuiter | |
| GB693208A (en) | Improvements relating to centrifugal switches for electric motors | |
| US1557194A (en) | Electrical apparatus | |
| US2062736A (en) | Centrifugal switch mechanism |