GB638614A - Improvements in or relating to rotation-responsive electric switches - Google Patents
Improvements in or relating to rotation-responsive electric switchesInfo
- Publication number
- GB638614A GB638614A GB999648A GB999648A GB638614A GB 638614 A GB638614 A GB 638614A GB 999648 A GB999648 A GB 999648A GB 999648 A GB999648 A GB 999648A GB 638614 A GB638614 A GB 638614A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- rotation
- pin
- mercury switch
- magnet
- 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
- H01H3/00—Mechanisms for operating contacts
- H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
- H01H3/56—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using electromagnetic clutch
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Adjustable Resistors (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
638,614. Magnetic couplings. REDLER CONVEYORS, Ltd., and ALLIN, C. W. April 9, 1948, No. 9996. [Class 35] [Also in Group XXXVII] Rotation of a shaft 22 carrying a permanent magnet 26 causes the rotation through a limited angle of a contact-operating conducting drum 29 owing to magnetic drag. The magnet 26 may comprise four radial poles the flux from which passes through the drum 29 to a fixed iron cylinder 35. The drum is biassed by gravity or a spring to one position, and moves to the other position when the speed of the magnet is great enough. In so moving, a pin 38 on the drum either directly engages a tilting mercury switch to cause it to open or as shown, Fig. 4, engages a latch 51 which moves relatively to the mercury switch without operating it during movement of the pin 38 to the right. Tilting of the mercury switch is in this case effected momentarily when the speed lessens and the pin 38 moves back to the left. An electric impulse may thus be given when the speed exceeds or falls below a certain value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB999648A GB638614A (en) | 1948-04-09 | 1948-04-09 | Improvements in or relating to rotation-responsive electric switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB999648A GB638614A (en) | 1948-04-09 | 1948-04-09 | Improvements in or relating to rotation-responsive electric switches |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB638614A true GB638614A (en) | 1950-06-14 |
Family
ID=9882643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB999648A Expired GB638614A (en) | 1948-04-09 | 1948-04-09 | Improvements in or relating to rotation-responsive electric switches |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB638614A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3431522A (en) * | 1967-04-14 | 1969-03-04 | Automatic Switch Co | Adjustable spring tension means |
-
1948
- 1948-04-09 GB GB999648A patent/GB638614A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3431522A (en) * | 1967-04-14 | 1969-03-04 | Automatic Switch Co | Adjustable spring tension means |
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