GB937229A - Improvements in and relating to control electric switch devices chiefly for use in mines and the like - Google Patents

Improvements in and relating to control electric switch devices chiefly for use in mines and the like

Info

Publication number
GB937229A
GB937229A GB2062360A GB2062360A GB937229A GB 937229 A GB937229 A GB 937229A GB 2062360 A GB2062360 A GB 2062360A GB 2062360 A GB2062360 A GB 2062360A GB 937229 A GB937229 A GB 937229A
Authority
GB
United Kingdom
Prior art keywords
switches
button
arm
pull
wire
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
GB2062360A
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.)
WILFRID BRUCE DAVIS
John Davis and Son Derby Ltd
Original Assignee
WILFRID BRUCE DAVIS
John Davis and Son Derby 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 WILFRID BRUCE DAVIS, John Davis and Son Derby Ltd filed Critical WILFRID BRUCE DAVIS
Priority to GB2062360A priority Critical patent/GB937229A/en
Publication of GB937229A publication Critical patent/GB937229A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/022—Emergency operating parts, e.g. for stop-switch in dangerous conditions
    • H01H3/0226—Emergency operating parts, e.g. for stop-switch in dangerous conditions operated by a pull cord
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/023—Light-emitting indicators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/68—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having two operating members, one for opening and one for closing the same set of contacts

Landscapes

  • Push-Button Switches (AREA)
  • Tumbler Switches (AREA)

Abstract

937,229. Press-button retractive switches; switches held set and freed mechanically. J. DAVIS & SON (DERBY) Ltd., and W. B. DAVIS. June 9, 1961 [June 11, 1960; Dec. 30, 1960], Nos. 20623/60 and 44696/60. Class 38 (5). A switch assembly comprises a combination of latchable and non-latchable retractive switches which may be operated by respective press-buttons or alternatively by a pull-wire acting on a separate common actuator. The latchable switch is optionally latched and unlatched by rotation of its press-button when in the depressed condition, or unavoidably latched when operated by the pull-wire and then unlatched by a separate manual release. A split housing 10 (of which only one part is shown) carries two spring-loaded buttons 15 and 19 acting respectively on leaf spring actuator arms 14 and 18 of switches 12 and 13, the arm 18 simultaneously actuating two switches 13 mounted as shown. By means of a central rib 19a, the button 19 may be rotated after depression, whereupon a pin 30 (which normally moves in a recess 31) engages the housing 10 (as shown in Fig. 5) to prevent button 19 retracting until rotated back again. A pull-wire (not shown) is attached to spring-loaded rod 25 which it can move to the right causing two pins 27, 28 thereon to engage arms 14 and 18 respectively. On release of the pull wire, arm 14 and thus switch 11 restores, but the arm 18 is retained by a latch 35. To restore the switches 13 the button 19 must be depressed when it moves latch 35 aside and on release allows the arm 18 to rise with it. An indicator lamp 37 is provided as shown and is connected to one of the switches 13 to indicate the latched or unlatched condition of these switches.
GB2062360A 1960-06-11 1960-06-11 Improvements in and relating to control electric switch devices chiefly for use in mines and the like Expired GB937229A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2062360A GB937229A (en) 1960-06-11 1960-06-11 Improvements in and relating to control electric switch devices chiefly for use in mines and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2062360A GB937229A (en) 1960-06-11 1960-06-11 Improvements in and relating to control electric switch devices chiefly for use in mines and the like

Publications (1)

Publication Number Publication Date
GB937229A true GB937229A (en) 1963-09-18

Family

ID=10148993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2062360A Expired GB937229A (en) 1960-06-11 1960-06-11 Improvements in and relating to control electric switch devices chiefly for use in mines and the like

Country Status (1)

Country Link
GB (1) GB937229A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451623A1 (en) * 1979-03-10 1980-10-10 Fein C & E Electric hand tool switch control - has one trigger operating mains switch through lug and other switch actuating via levers (NL 12.9.80)
US4458122A (en) * 1982-02-19 1984-07-03 Communication And Control Engineering Company Limited Cam switch mechanism and control device, such as a pullkey, incorporating the same
CN106328408A (en) * 2016-09-29 2017-01-11 池香娥 Push-pull home switch that turns on or off the live wire and the zero wire of power supply at the same time

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451623A1 (en) * 1979-03-10 1980-10-10 Fein C & E Electric hand tool switch control - has one trigger operating mains switch through lug and other switch actuating via levers (NL 12.9.80)
US4458122A (en) * 1982-02-19 1984-07-03 Communication And Control Engineering Company Limited Cam switch mechanism and control device, such as a pullkey, incorporating the same
CN106328408A (en) * 2016-09-29 2017-01-11 池香娥 Push-pull home switch that turns on or off the live wire and the zero wire of power supply at the same time
CN106328408B (en) * 2016-09-29 2019-02-19 池香娥 A kind of plug-type home switch of the firewire for being also turned on or cutting off the power and zero curve

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