GB150730A - Improvements in time-limit relays for use in electrical supply systems - Google Patents

Improvements in time-limit relays for use in electrical supply systems

Info

Publication number
GB150730A
GB150730A GB25466/20A GB2546620A GB150730A GB 150730 A GB150730 A GB 150730A GB 25466/20 A GB25466/20 A GB 25466/20A GB 2546620 A GB2546620 A GB 2546620A GB 150730 A GB150730 A GB 150730A
Authority
GB
United Kingdom
Prior art keywords
time
shaft
cam
clutch
limit
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
GB25466/20A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Publication of GB150730A publication Critical patent/GB150730A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay

Landscapes

  • Electric Propulsion And Braking For Vehicles (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Mechanical Operated Clutches (AREA)
  • Measurement Of Predetermined Time Intervals (AREA)

Abstract

150,730. Metropolitan-Vickers ELectrical Co., (Assignees of Wensley, R. J.). Sept. 3, 1919, [Convention date]. Time-limit devices; electric-motor actuation.- A relay, with an adjustable time-limit, for maintaining an electric traction supply for a given time after the demand has ceased, consists of a cam member 11 on a shaft 10 carrying a magnetic clutch disk 9 which, when the clutch is energized, connects the shaft to the slow-speed wheel 6 of a train of reduction gear 6, 5, 3, 4 driven by a small fan motor 1. After a certain time depending upon the initial position of an adjustable back-stop 12 against which the cam member normally rests, the cam is driven by the gear train to press a contact 13 against a fixed contact 14. When the clutch is de-energized, the shaft 10 is uncoupled and, under the action of the spiral spring 15, is brought back, unretarded, to the initial position in which the cam rests against the back-stop.
GB25466/20A 1919-09-03 1920-09-03 Improvements in time-limit relays for use in electrical supply systems Expired GB150730A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US321409A US1597851A (en) 1919-09-03 1919-09-03 Time-limit relay

Publications (1)

Publication Number Publication Date
GB150730A true GB150730A (en) 1921-09-22

Family

ID=23250502

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25466/20A Expired GB150730A (en) 1919-09-03 1920-09-03 Improvements in time-limit relays for use in electrical supply systems

Country Status (2)

Country Link
US (1) US1597851A (en)
GB (1) GB150730A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114013A (en) * 1961-03-21 1963-12-10 Morschel Franz Time switch with mechanical clutch actuating arrangement
DE1239761B (en) * 1963-07-16 1967-05-03 Helmut Schleicher Mechanical time relay with electromagnetic clutch

Also Published As

Publication number Publication date
US1597851A (en) 1926-08-31

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