GB838684A - Improvements in and relating to actuators for electrical switches - Google Patents

Improvements in and relating to actuators for electrical switches

Info

Publication number
GB838684A
GB838684A GB2724658A GB2724658A GB838684A GB 838684 A GB838684 A GB 838684A GB 2724658 A GB2724658 A GB 2724658A GB 2724658 A GB2724658 A GB 2724658A GB 838684 A GB838684 A GB 838684A
Authority
GB
United Kingdom
Prior art keywords
knob
actuator
lug
indicator
slider
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
GB2724658A
Inventor
Eric Horne Whitfield
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.)
Welwyn Electrcal Laboratories Ltd
Original Assignee
Welwyn Electrcal Laboratories 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 Welwyn Electrcal Laboratories Ltd filed Critical Welwyn Electrcal Laboratories Ltd
Priority to GB2724658A priority Critical patent/GB838684A/en
Publication of GB838684A publication Critical patent/GB838684A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/16Indicators for switching condition, e.g. "on" or "off"

Landscapes

  • Spectrometry And Color Measurement (AREA)

Abstract

838,684. Indicators for switches. WELWYN ELECTRICAL LABORATORIES Ltd. Aug. 25, 1958, No. 27246/58. Addition to 836,264. Class 38 (5). A switch 16, as in the parent Specification, has a V-form abutment member 19, the arms of which are alternately engaged by a trigger member 10 to change the condition of the switch upon successive actuations of a knob 8. The trigger 10 has a lug 11 accommodated in a slot 12 in a slidable actuator member 6 and retained against one end 13 of the slot 12 by a spring 24 which thereby also serves to retract the member 6. When knob 8 is pushed the trigger 10, in moving the V-member to its alternate position, swings to one side, the lug 11 being re-seated in slot 12 upon retraction of actuator 6. The knob 8 has a rectangular tunnel in which is slidably located an indicator member 37 of different colour to the knob 8 and/or carrying the word ON while the sill of the tunnel at the inclined corner surface 38 carries the word OFF. The indicator 37 is displaceable by an extension 39 of a slider 28 overlying actuator 6 and having a lug 33 (Fig. 2) engaged by a light spring 30 and a lug 35 (Fig. 1) which can enter a recess 36 in the side of actuator 6. When the switch is operated such that the V-member 19 moves clockwise (Fig. 1) the arm 20 thereof and/or the corner of trigger 10 disengages the lug 35 from recess 36. When actuator 6 is retracted the spring 30 holds the slider 28 stationary and hence the indicator 37 is hidden in the tunnel in knob 8. On the next actuation the V-member 19 is moved anticlockwise, allowing lug 35 to re-enter recess 36 and the slider 28 is moved back with actuator 6, and indicator 37 is thus visible at the edge 38 of knob 8. In a modification, the actuator 6 may be mounted for angular movement on an arm pivoted about one of the bolts or rivets 17, 17a, a suitable knob being provided, and the slider 28 being connected by a lever to an indicator movable from side-to-side within the knob.
GB2724658A 1958-08-25 1958-08-25 Improvements in and relating to actuators for electrical switches Expired GB838684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2724658A GB838684A (en) 1958-08-25 1958-08-25 Improvements in and relating to actuators for electrical switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2724658A GB838684A (en) 1958-08-25 1958-08-25 Improvements in and relating to actuators for electrical switches

Publications (1)

Publication Number Publication Date
GB838684A true GB838684A (en) 1960-06-22

Family

ID=10256479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2724658A Expired GB838684A (en) 1958-08-25 1958-08-25 Improvements in and relating to actuators for electrical switches

Country Status (1)

Country Link
GB (1) GB838684A (en)

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