GB781852A - Improvements in and relating to electromagnetic devices - Google Patents

Improvements in and relating to electromagnetic devices

Info

Publication number
GB781852A
GB781852A GB23286/53A GB2328653A GB781852A GB 781852 A GB781852 A GB 781852A GB 23286/53 A GB23286/53 A GB 23286/53A GB 2328653 A GB2328653 A GB 2328653A GB 781852 A GB781852 A GB 781852A
Authority
GB
United Kingdom
Prior art keywords
knife
edge
armature
aug
recess
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
GB23286/53A
Inventor
Frederick Emil Rommel
Norman Francis Pettet
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.)
Telephone Manufacturing Co Ltd
Original Assignee
Telephone Manufacturing 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 Telephone Manufacturing Co Ltd filed Critical Telephone Manufacturing Co Ltd
Publication of GB781852A publication Critical patent/GB781852A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H01H50/26—Parts movable about a knife edge
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)

Abstract

781,852. Electric selectors. TELEPHONE MANUFACTURING CO., Ltd. Aug. 24, 1954 [Aug. 24, 1953], No. 23286/53. Class 40 (4). A bar-relay selector of the type described in Specification 728,891 comprises an armature with a knife-edge entering a recess in a support, the knife-edge carrying a non-magnetic member serving to define the residual gap in the magnetic circuit when the armature is in operated position and serving also to retain the knife-edge in the recess. Figures 1-8 (not shown) and the related description are identical with those of Specification 781,851 but the claims differ. The spring member 45 carrying interference member 46 may be modified as shown in Fig. 9, projections 45c engaging under a spring plate 52, Fig. 10.
GB23286/53A 1953-08-24 1953-08-24 Improvements in and relating to electromagnetic devices Expired GB781852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23285/53A GB781851A (en) 1953-08-24 1953-08-24 Improvements in and relating to electromagnetic devices

Publications (1)

Publication Number Publication Date
GB781852A true GB781852A (en) 1957-08-28

Family

ID=10193181

Family Applications (2)

Application Number Title Priority Date Filing Date
GB23285/53A Expired GB781851A (en) 1953-08-24 1953-08-24 Improvements in and relating to electromagnetic devices
GB23286/53A Expired GB781852A (en) 1953-08-24 1953-08-24 Improvements in and relating to electromagnetic devices

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB23285/53A Expired GB781851A (en) 1953-08-24 1953-08-24 Improvements in and relating to electromagnetic devices

Country Status (3)

Country Link
US (1) US2821598A (en)
BE (2) BE531358A (en)
GB (2) GB781851A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2476789A (en) * 1944-03-13 1949-07-19 Ericsson Telefon Ab L M Contact selecting finger for crossbar switches
US2553517A (en) * 1946-02-15 1951-05-15 Isserstedt Siegfreid Gordon Electrical remote control
NL157717B (en) * 1949-12-08 Marvin Henry Grove En Julie Mi DEVICE FOR GENERATING A GAS PRESSURE SIGNAL TO BE USED FOR CALIBRATION AND TESTING OF EQUIPMENT RESPONDING TO PRESSURE CHANGE.

Also Published As

Publication number Publication date
US2821598A (en) 1958-01-28
GB781851A (en) 1957-08-28
BE531358A (en)
BE531359A (en)

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