GB669237A - Improvements relating to switches in portable electric appliances - Google Patents

Improvements relating to switches in portable electric appliances

Info

Publication number
GB669237A
GB669237A GB13863/50A GB1386350A GB669237A GB 669237 A GB669237 A GB 669237A GB 13863/50 A GB13863/50 A GB 13863/50A GB 1386350 A GB1386350 A GB 1386350A GB 669237 A GB669237 A GB 669237A
Authority
GB
United Kingdom
Prior art keywords
switch
pedal
pivoted
armature
magnet
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
GB13863/50A
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.)
Hoover Ltd
Original Assignee
Hoover 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 Hoover Ltd filed Critical Hoover Ltd
Publication of GB669237A publication Critical patent/GB669237A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4002—Installations of electric equipment
    • A47L11/4008—Arrangements of switches, indicators or the like
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2836—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means characterised by the parts which are controlled
    • A47L9/2842—Suction motors or blowers
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2857—User input or output elements for control, e.g. buttons, switches or displays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2868—Arrangements for power supply of vacuum cleaners or the accessories thereof
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/28—Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
    • A47L9/2889—Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user
    • 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
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/26—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for operation by a part of the human body other than the hand, e.g. by foot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/50—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
    • H01H3/503—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring making use of electromagnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Switches With Compound Operations (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Push-Button Switches (AREA)

Abstract

669,237. Automatic circuit-breakers. HOOVER, Ltd. June 2, 1950. [June 14, 1949] No. 13863/50. Class 38 (v). [Also in Group XXIII] The motor of a portable powerdriven appliance such as a floor polisher is controlled by a switch which is moved "on" by depression of a pedal 13 and is then held "on" against the action of a return spring by the attraction of the field magnet 35 of the motor for an armature 36 so that failure of current causes automatic return to the "off" position. The switch may also be moved "off" by a second depression of the pedal. The switch, Fig. 3, is of the kind in which successive depressions of a button 26 move a pivoted member 27 alternately right and left, thereby operating the contact member alternately "on" and "off" through a dead-centre spring mechanism. In the form shown the button 26 is operated by a bar 19 on the pedal operated member 13 pivoted at 15. The member 27 passes through a hole in a slide 40 urged to the left, i.e. to the "off" position by a spring 42. Operation of the switch "on" therefore by the pedal 13 causes the slide 40 to move to the right and this operates a bell crank lever 38 so as to allow the armature 36 pivoted at 37 to engage and be held by the magnet 35. In a modification, Fig. 6, the left hand position of the slide 40<SP>1</SP> corresponds to the "on" position, and the pedal 13<SP>1</SP> operates a rectilinearly-moving slide 53 which engages the button 26<SP>1</SP> of the switch and also by means of a cam surface 65 rotates a plate 60 pivoted at 61, the plate in turn actuating a member 56 pivoted at 57 and thereby bringing the armature 36<SP>1</SP> up to the magnet 35<SP>1</SP> where it is held. The above movement of the plate 60 allows the switch to close, such movement otherwise being prevented by the interengagement of catches 62, 63 on members 60, 40<SP>1</SP> respectively. In this modification, operation of the pedal 13<SP>1</SP> to open the switch does so without pulling the armature away from the magnet.
GB13863/50A 1949-06-14 1950-06-02 Improvements relating to switches in portable electric appliances Expired GB669237A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US98958A US2574965A (en) 1949-06-14 1949-06-14 Safety switch for portable appliances

Publications (1)

Publication Number Publication Date
GB669237A true GB669237A (en) 1952-04-02

Family

ID=22271735

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13863/50A Expired GB669237A (en) 1949-06-14 1950-06-02 Improvements relating to switches in portable electric appliances

Country Status (4)

Country Link
US (1) US2574965A (en)
DE (1) DE846136C (en)
FR (1) FR1020889A (en)
GB (1) GB669237A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH288563A (en) * 1951-02-15 1953-01-31 Bruno Angel Electric switch.
US3867591A (en) * 1974-01-16 1975-02-18 Whirlpool Co One piece switch holder and foot operated hinge actuator for vacuum cleaner switch

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US528430A (en) * 1894-10-30 Florence l
US938501A (en) * 1904-02-27 1909-11-02 Burroughs Adding Machine Co Adding machine.
US1751781A (en) * 1929-04-20 1930-03-25 Electric Sprayit Company Motor-driven-tools switch
US2073244A (en) * 1933-11-22 1937-03-09 Electrolux Corp Vacuum cleaner switch
US2257033A (en) * 1940-01-25 1941-09-23 Crouse Hinds Co Switch operating mechanism
US2389220A (en) * 1942-11-20 1945-11-20 Earl W Tredeau Switch actuator

Also Published As

Publication number Publication date
DE846136C (en) 1952-08-11
US2574965A (en) 1951-11-13
FR1020889A (en) 1953-02-11

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