GB451135A - Improvements in or relating to snap-action electric switches - Google Patents

Improvements in or relating to snap-action electric switches

Info

Publication number
GB451135A
GB451135A GB1368035A GB1368035A GB451135A GB 451135 A GB451135 A GB 451135A GB 1368035 A GB1368035 A GB 1368035A GB 1368035 A GB1368035 A GB 1368035A GB 451135 A GB451135 A GB 451135A
Authority
GB
United Kingdom
Prior art keywords
roller
snap
spring
rod
end positions
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
GB1368035A
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.)
FOSTER ENGINEERING Co Ltd
Original Assignee
FOSTER ENGINEERING Co 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 FOSTER ENGINEERING Co Ltd filed Critical FOSTER ENGINEERING Co Ltd
Priority to GB1368035A priority Critical patent/GB451135A/en
Publication of GB451135A publication Critical patent/GB451135A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/40—Driving mechanisms having snap action
    • H01H21/42—Driving mechanisms having snap action produced by compression or extension of coil spring

Landscapes

  • Toys (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

451,135. Snap-action switches. FOSTER ENGINEERING CO., Ltd., and DOBSON, E., Apex Works, South Wimbledon, London. May 9, 1935, No. 13680. [Class 38 (v)] A snap-action switch comprises an insulating roller 2 carrying contact blades 3 and driven with lost-motion by a cranked spindle 10 connected by a deadcentre tension spring 5 to a fixed bracket 9. To reduce operating shocks on the roller 2, a rod 6 is placed inside the spring 5 to arrest the spindle 10 just before the roller 2 reaches its end positions, the roller completing its travel by its own inertia. The rod 6 may be replaced by a sleeve surrounding the spring 5, and instead of engaging a bracket may engage a rubber pad on the side of the casing. In addition, resilient pads may be placed to cushion the contact blades in their end positions.
GB1368035A 1935-05-09 1935-05-09 Improvements in or relating to snap-action electric switches Expired GB451135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1368035A GB451135A (en) 1935-05-09 1935-05-09 Improvements in or relating to snap-action electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1368035A GB451135A (en) 1935-05-09 1935-05-09 Improvements in or relating to snap-action electric switches

Publications (1)

Publication Number Publication Date
GB451135A true GB451135A (en) 1936-07-30

Family

ID=10027452

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1368035A Expired GB451135A (en) 1935-05-09 1935-05-09 Improvements in or relating to snap-action electric switches

Country Status (1)

Country Link
GB (1) GB451135A (en)

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