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GB191002057A - Improvements in Telephone Switching Apparatus. - Google Patents

Improvements in Telephone Switching Apparatus.

Info

Publication number
GB191002057A
GB191002057A GB191002057DA GB191002057A GB 191002057 A GB191002057 A GB 191002057A GB 191002057D A GB191002057D A GB 191002057DA GB 191002057 A GB191002057 A GB 191002057A
Authority
GB
United Kingdom
Prior art keywords
magnet
stud
arm
switch
connexion
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
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.)
British Insulated and Helsby Cables Ltd
Original Assignee
British Insulated and Helsby Cables 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 British Insulated and Helsby Cables Ltd filed Critical British Insulated and Helsby Cables Ltd
Application granted granted Critical
Publication of GB191002057A publication Critical patent/GB191002057A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/50—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring
    • H01H3/503—Driving mechanisms, i.e. for transmitting driving force to the contacts with indexing or locating means, e.g. indexing by ball and spring making use of electromagnets

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Telephone Set Structure (AREA)

Abstract

2057. Aitken, W., and British Insulated and Helsby Cables, Ltd. Jan. 27. Electrically-released switches.-In telephone systems in which a switch is moved manually to make a required connexion, it is arranged that the switch is held in the required position electro-magnetically until the connexion is broken by the hanging-up of the receiver or the like, whereupon the magnet is de-energized, and the switch released. The depression of the stud k completes contact between the spring m and one of a number of studs n. The stud is held down by the electro-magnet b and armature e while the magnet is energized and, when the circuit is broken by hanging up the receiver or otherwise, the coiled spring g returns the plunger f and push k to the normal position. The arm p moves round a serrated disk to ensure the arm j resting only on a stud. Series of contact-springs may be arranged round the magnet to be actuated by the arm j. Specifications 16,642/09 and 16,643/09, [Class 40, (iv), Telephones &c.], are referred to.
GB191002057D 1910-01-27 1910-01-27 Improvements in Telephone Switching Apparatus. Expired GB191002057A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191002057T 1910-01-27

Publications (1)

Publication Number Publication Date
GB191002057A true GB191002057A (en) 1910-05-26

Family

ID=32560047

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191002057D Expired GB191002057A (en) 1910-01-27 1910-01-27 Improvements in Telephone Switching Apparatus.

Country Status (1)

Country Link
GB (1) GB191002057A (en)

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