GB610491A - Improvements in or relating to electric switches, particularly ceiling switches - Google Patents
Improvements in or relating to electric switches, particularly ceiling switchesInfo
- Publication number
- GB610491A GB610491A GB1079746A GB1079746A GB610491A GB 610491 A GB610491 A GB 610491A GB 1079746 A GB1079746 A GB 1079746A GB 1079746 A GB1079746 A GB 1079746A GB 610491 A GB610491 A GB 610491A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pawl
- wheels
- members
- switches
- ratchet
- 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
- H01H17/00—Switches having flexible operating part adapted only for pulling, e.g. cord, chain
Landscapes
- Transmission Devices (AREA)
- Push-Button Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
Abstract
610,491. Ceiling switches. ARNOLD, C. L., DOWSETT, R. W., DUFFIELD, J. F., and M.K. ELECTRIC, Ltd. April 8, 1946, No. 10797. [Class 38 (v)] Rotary contact-operating members 8 are actuated stepwise in the same direction by successive reciprocations of a flexible pullmember 22 which is connected to a pawl 24 engaging ratchet-wheels 18 integral with the members 8, the member 22 being biassed by a spring 20 which also biasses the pawl towards the ratchet-wheels. The pawl 24 is notched at 23 to secure the end ball of the pull-member 22 and a slidable element 21 is slotted to receive this ball and the pawl. Shoulders on the pawl 24 engage the element 21 so that the spring 20 urges a pin 25 in the upper end of the pawl on to the face of ratchet-wheels 18, and when the member 22 is pulled, this pin engages undercut teeth 18a to rotate the wheels 18 and hence the members 8 through 90 degrees. The members 8 are in the form of cams which function in the manner described in Specifications 532,336 and 610,490 and have locating depressions formed in their short and long faces 8a, 8b, these faces corresponding to the " open " and " closed " positions of contacts 5, 4. When the member 22 is not tensioned, the lowermost tooth 18a retains the end ball in position.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1079746A GB610491A (en) | 1946-04-08 | 1946-04-08 | Improvements in or relating to electric switches, particularly ceiling switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1079746A GB610491A (en) | 1946-04-08 | 1946-04-08 | Improvements in or relating to electric switches, particularly ceiling switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB610491A true GB610491A (en) | 1948-10-15 |
Family
ID=9974433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1079746A Expired GB610491A (en) | 1946-04-08 | 1946-04-08 | Improvements in or relating to electric switches, particularly ceiling switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB610491A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1017680B (en) * | 1955-04-27 | 1957-10-17 | Busch Jaeger Duerener Metall | Electric pull switch with push contacts |
GB2148599A (en) * | 1983-10-22 | 1985-05-30 | Crabtree Electrical Ind Ltd | Electric switches |
-
1946
- 1946-04-08 GB GB1079746A patent/GB610491A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1017680B (en) * | 1955-04-27 | 1957-10-17 | Busch Jaeger Duerener Metall | Electric pull switch with push contacts |
GB2148599A (en) * | 1983-10-22 | 1985-05-30 | Crabtree Electrical Ind Ltd | Electric switches |
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