GB610491A - Improvements in or relating to electric switches, particularly ceiling switches - Google Patents

Improvements in or relating to electric switches, particularly ceiling switches

Info

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
Application number
GB1079746A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Novar ED&S Ltd
Original Assignee
MK Electric Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MK Electric Ltd filed Critical MK Electric Ltd
Priority to GB1079746A priority Critical patent/GB610491A/en
Publication of GB610491A publication Critical patent/GB610491A/en
Expired legal-status Critical Current

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

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.
GB1079746A 1946-04-08 1946-04-08 Improvements in or relating to electric switches, particularly ceiling switches Expired GB610491A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
GB656483A (en) Improvements in nut structures
GB610491A (en) Improvements in or relating to electric switches, particularly ceiling switches
GB581824A (en) Improvements in or relating to snap action electrical switches
GB1516783A (en) Fastening means
GB904970A (en) Improvements relating to door or like handles
GB661188A (en) Improvements in switching devices actuated on the reversal of a rotary member
GB613338A (en) Improvements connected with clothes pegs
GB648555A (en) Improvements in and relating to click mechanisms
GB661889A (en) A new or improved control for variable speed gears on cycles
GB1060152A (en) Improvements relating to electric switches
ES380276A1 (en) Vehicle door latch
GB609642A (en) Improvements relating to pawl and ratchet mechanism
GB516154A (en) Improvements relating to electric ceiling switches
GB622502A (en) Improvements in or relating to small non-return valves
GB692246A (en) Improvements relating to cam-operated electric switches
GB778464A (en) Screw cap
GB616462A (en) Improvements relating to ratchet-type mechanisms
GB614694A (en) Improvements in or relating to electric switches of the "push-bar" type for lamp-holder sockets and the like
GB682595A (en) Improvements in electrical socket contact members
GB621416A (en) Improvements in or relating to electric tumbler switches
GB604896A (en) Improvements relating to electric tumbler switches
GB1505590A (en) Control stepping devices
GB614619A (en) Improvements in electric tumbler switches
GB918627A (en) Improvements relating to electric pull switches
JPS51148486A (en) Rotary sample-base