GB534910A - Improvements in, and connected with, electromagnetic switches - Google Patents

Improvements in, and connected with, electromagnetic switches

Info

Publication number
GB534910A
GB534910A GB3092639A GB3092639A GB534910A GB 534910 A GB534910 A GB 534910A GB 3092639 A GB3092639 A GB 3092639A GB 3092639 A GB3092639 A GB 3092639A GB 534910 A GB534910 A GB 534910A
Authority
GB
United Kingdom
Prior art keywords
rotor
lever
armature
core
carrying
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
GB3092639A
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.)
JA Crabtree and Co Ltd
Original Assignee
JA Crabtree and 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 JA Crabtree and Co Ltd filed Critical JA Crabtree and Co Ltd
Priority to GB3092639A priority Critical patent/GB534910A/en
Publication of GB534910A publication Critical patent/GB534910A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity
    • H01H51/08—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet
    • H01H51/082—Contacts alternately opened and closed by successive cycles of energisation and de-energisation of the electromagnet, e.g. by use of a ratchet using rotating ratchet mechanism

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)

Abstract

534,910. Electromagnetic switches. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and MORGAN, R. W. Nov. 28, 1939, No. 30926. [Class 38 (v)] A contact-carrying rotor c is rotated step-bystep by successive energizations of a low-voltage electromagnet f, the cone e of which is connected to a lever n carrying a pawl d which successively engages pins l on the rotor. The other end of the lever n moves to engage a pin l to stop the rotation of the rotor and a spring-pressed lever r engages another pin to prevent reverse rotation. The rotor carries a contact which bridges contacts k in a high-voltage circuit in alternate positions of the switch. A resistance is also introduced into the circuit when the armature is attracted. In the form shown, the resistance takes the form of a coil which attracts an additional armature pushed up by an insulating member v on the core e, the additional armature being held up after the reduced current in the main coil f has released the core e.
GB3092639A 1939-11-28 1939-11-28 Improvements in, and connected with, electromagnetic switches Expired GB534910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3092639A GB534910A (en) 1939-11-28 1939-11-28 Improvements in, and connected with, electromagnetic switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3092639A GB534910A (en) 1939-11-28 1939-11-28 Improvements in, and connected with, electromagnetic switches

Publications (1)

Publication Number Publication Date
GB534910A true GB534910A (en) 1941-03-21

Family

ID=10315249

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3092639A Expired GB534910A (en) 1939-11-28 1939-11-28 Improvements in, and connected with, electromagnetic switches

Country Status (1)

Country Link
GB (1) GB534910A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550605A (en) * 1945-07-25 1951-04-24 Bell Telephone Labor Inc Circuit closing device
US4038626A (en) * 1975-06-11 1977-07-26 I-T-E Imperial Corporation High voltage contactor
FR2951863A1 (en) * 2009-10-28 2011-04-29 Mitsubishi Electric Corp Device for short-circuiting resistor of starter of engine of vehicle to start engine, has external electrodes exposed to outer side of terminal plate, and resistor connected between external electrodes at outer side of terminal plate
CN113485239A (en) * 2021-06-22 2021-10-08 郭恩训 Finger pressing device and control circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2550605A (en) * 1945-07-25 1951-04-24 Bell Telephone Labor Inc Circuit closing device
US4038626A (en) * 1975-06-11 1977-07-26 I-T-E Imperial Corporation High voltage contactor
FR2951863A1 (en) * 2009-10-28 2011-04-29 Mitsubishi Electric Corp Device for short-circuiting resistor of starter of engine of vehicle to start engine, has external electrodes exposed to outer side of terminal plate, and resistor connected between external electrodes at outer side of terminal plate
CN113485239A (en) * 2021-06-22 2021-10-08 郭恩训 Finger pressing device and control circuit

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