GB191222311A - An Oscillating Spring Contact for Operating Electric Bells, and such like Apparatus. - Google Patents

An Oscillating Spring Contact for Operating Electric Bells, and such like Apparatus.

Info

Publication number
GB191222311A
GB191222311A GB191222311DA GB191222311A GB 191222311 A GB191222311 A GB 191222311A GB 191222311D A GB191222311D A GB 191222311DA GB 191222311 A GB191222311 A GB 191222311A
Authority
GB
United Kingdom
Prior art keywords
spring contact
oscillating spring
electric bells
operating electric
bells
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
Inventor
Francis Burr
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
Application granted granted Critical
Publication of GB191222311A publication Critical patent/GB191222311A/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
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/74—Mechanical means for producing a desired natural frequency of operation of the contacts, e.g. for self-interrupter

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)

Abstract

22,311. Burr, F. Oct. 1. Switches. - An oscillating spring contact device for use with electric bells and like apparatus comprises a narrow strip of metal a one end of which is coiled into a helix of one or more convolutions, and secured to a fixed member c, while the other end b is left uncoiled and provided with an adjustable knob or weight l, which serves as a handle whereby the strip may be set in oscillation and caused to make and break circuit a number of times with an adjustable contact-screw f.
GB191222311D 1912-10-01 1912-10-01 An Oscillating Spring Contact for Operating Electric Bells, and such like Apparatus. Expired GB191222311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191222311T 1912-10-01

Publications (1)

Publication Number Publication Date
GB191222311A true GB191222311A (en) 1913-04-17

Family

ID=32643271

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191222311D Expired GB191222311A (en) 1912-10-01 1912-10-01 An Oscillating Spring Contact for Operating Electric Bells, and such like Apparatus.

Country Status (1)

Country Link
GB (1) GB191222311A (en)

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