GB667508A - Improvements relating to portable hand tools and electric switches therefor - Google Patents

Improvements relating to portable hand tools and electric switches therefor

Info

Publication number
GB667508A
GB667508A GB8135/50A GB813550A GB667508A GB 667508 A GB667508 A GB 667508A GB 8135/50 A GB8135/50 A GB 8135/50A GB 813550 A GB813550 A GB 813550A GB 667508 A GB667508 A GB 667508A
Authority
GB
United Kingdom
Prior art keywords
trigger
portable hand
improvements relating
hand tools
electric switches
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
GB8135/50A
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.)
Wolf Electric Tools Ltd
Original Assignee
Wolf Electric Tools 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 Wolf Electric Tools Ltd filed Critical Wolf Electric Tools Ltd
Priority to GB8135/50A priority Critical patent/GB667508A/en
Priority to US163876A priority patent/US2609468A/en
Priority to DEW4815A priority patent/DE857179C/en
Publication of GB667508A publication Critical patent/GB667508A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H13/04—Cases; Covers
    • H01H13/08—Casing of switch constituted by a handle serving a purpose other than the actuation of the switch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
    • B23B45/001—Housing of the drill, e.g. handgrip
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20636—Detents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
  • Portable Power Tools In General (AREA)
  • Drilling And Boring (AREA)

Abstract

667,508. Switches held set and freed mechanically. WOLF ELECTRIC TOOLS, Ltd., and GUBBINS, C. H. March 31, 1950. No. 8135/50. Class 38 (v). The trigger 25 of a portable hand tool is slidable between guide surfaces 28, 30 and has a projection 31 arranged, in the "on" position, to engage behind a shoulder 32 at the end of surface 28, so as to hold the switch closed, Fig. 5, the trigger being, for this purpose, canted by the throw-off spring 38. The switch is opened by upward pressure on part 25b of the trigger. The switch comprises a tumbler 21 pivoted at 23 and carrying contacts 22 arranged to bridge fixed contacts 15, when a spring-pressed ball 36 carried by the trigger moves to the right of the pivots 23.
GB8135/50A 1950-03-31 1950-03-31 Improvements relating to portable hand tools and electric switches therefor Expired GB667508A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8135/50A GB667508A (en) 1950-03-31 1950-03-31 Improvements relating to portable hand tools and electric switches therefor
US163876A US2609468A (en) 1950-03-31 1950-05-24 Switch actuator for portable hand tools
DEW4815A DE857179C (en) 1950-03-31 1950-12-22 On and off switch for power-driven hand tools, such as hand tools, with a spring-loaded push button to switch on and off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8135/50A GB667508A (en) 1950-03-31 1950-03-31 Improvements relating to portable hand tools and electric switches therefor

Publications (1)

Publication Number Publication Date
GB667508A true GB667508A (en) 1952-03-05

Family

ID=9846420

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8135/50A Expired GB667508A (en) 1950-03-31 1950-03-31 Improvements relating to portable hand tools and electric switches therefor

Country Status (3)

Country Link
US (1) US2609468A (en)
DE (1) DE857179C (en)
GB (1) GB667508A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031502B (en) * 1956-01-05 1958-06-04 Festo Maschf Stoll G Roller feed device for woodworking machines
US7305980B2 (en) * 2006-02-01 2007-12-11 Guay Guay Trading Co., Ltd. Gear box structure for a toy gun
US9500432B2 (en) * 2013-06-04 2016-11-22 Easebon Services Limited Hinged arm safety mechanism for foam dart launcher
US9032945B2 (en) * 2013-06-04 2015-05-19 Easebon Services Limited Hinged arm safety mechanism for foam dart launcher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE474135C (en) * 1926-12-03 1929-03-27 Fein C & E Handle switch with a control pin that slides on the back of a two-armed switch lever and is movable in a guide under spring pressure
US2283778A (en) * 1938-07-19 1942-05-19 Black & Decker Mfg Co Electric tool
US2373842A (en) * 1942-10-16 1945-04-17 Independent Pneumatic Tool Co Portable hand held electric tool
US2488637A (en) * 1943-11-22 1949-11-22 Smith & Sons Ltd S Control for alarm clocks
US2487011A (en) * 1946-06-18 1949-11-01 Black & Decker Mfg Co Switch assembly for portable electric tools

Also Published As

Publication number Publication date
US2609468A (en) 1952-09-02
DE857179C (en) 1952-11-27

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