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GB291869A - Improvements in apparatus for the control of electric circuits - Google Patents

Improvements in apparatus for the control of electric circuits

Info

Publication number
GB291869A
GB291869A GB660427A GB660427A GB291869A GB 291869 A GB291869 A GB 291869A GB 660427 A GB660427 A GB 660427A GB 660427 A GB660427 A GB 660427A GB 291869 A GB291869 A GB 291869A
Authority
GB
United Kingdom
Prior art keywords
contactors
group
shaft
controllers
sequence
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
GB660427A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB660427A priority Critical patent/GB291869A/en
Publication of GB291869A publication Critical patent/GB291869A/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
    • H01H50/86—Means for introducing a predetermined time delay between the initiation of the switching operation and the opening or closing of the contacts
    • H01H50/88—Mechanical means, e.g. dash-pot

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

291,869. James, H. V., and Stevens, A. H. March 9, 1927. Controllers, actuating; controllers, multiple rocking-bar.-In apparatus for effecting seriesshunt control of electric motors, a solenoid 16 rocks a shaft 13 on which is mounted a partconcentric cam 9 for closing a group of series contactors 1, and a separate member 15 for opening a group of shunt contactors 2. Each group of contactors moves as a whole, the separate contactors being adjusted to come on and off in sequence by means of screws 28, 8. After all the series contactors have been closed, the concentric part of the cam holds, them against spring pressure and further rocking movement of the shaft opens the shunt contactors in sequence. The shaft may carry additional cams for operating additional groups of contactors. A dash-pot 24 retards the operation.
GB660427A 1927-03-09 1927-03-09 Improvements in apparatus for the control of electric circuits Expired GB291869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB660427A GB291869A (en) 1927-03-09 1927-03-09 Improvements in apparatus for the control of electric circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB660427A GB291869A (en) 1927-03-09 1927-03-09 Improvements in apparatus for the control of electric circuits

Publications (1)

Publication Number Publication Date
GB291869A true GB291869A (en) 1928-06-11

Family

ID=9817493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB660427A Expired GB291869A (en) 1927-03-09 1927-03-09 Improvements in apparatus for the control of electric circuits

Country Status (1)

Country Link
GB (1) GB291869A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941983C (en) * 1938-11-28 1956-04-26 Vapor Heating Corp Electrical switching device with a plurality of contact pairs
GB2233824A (en) * 1989-07-06 1991-01-16 B & R Electrical Plc A solenoid actuated relay

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE941983C (en) * 1938-11-28 1956-04-26 Vapor Heating Corp Electrical switching device with a plurality of contact pairs
GB2233824A (en) * 1989-07-06 1991-01-16 B & R Electrical Plc A solenoid actuated relay
GB2233824B (en) * 1989-07-06 1993-12-22 B & R Electrical Plc Design of a solenoid actuated relay

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