[go: up one dir, main page]

GB135971A - Improvements in Electric Ringing Keys. - Google Patents

Improvements in Electric Ringing Keys.

Info

Publication number
GB135971A
GB135971A GB2091018A GB2091018A GB135971A GB 135971 A GB135971 A GB 135971A GB 2091018 A GB2091018 A GB 2091018A GB 2091018 A GB2091018 A GB 2091018A GB 135971 A GB135971 A GB 135971A
Authority
GB
United Kingdom
Prior art keywords
rod
piece
cross
return spring
electric ringing
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
GB2091018A
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.)
John Davis and Son Derby Ltd
Original Assignee
John Davis and Son Derby 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 John Davis and Son Derby Ltd filed Critical John Davis and Son Derby Ltd
Priority to GB2091018A priority Critical patent/GB135971A/en
Publication of GB135971A publication Critical patent/GB135971A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/635—Contacts actuated by rectilinearly-movable member linked to operating part, e.g. by pin and slot

Landscapes

  • Push-Button Switches (AREA)

Abstract

135,971. Davis & Son, J., and Dearle, G. Dec. 16, 1918.. Retractive switches.-In an electric ringing- key, a rod d mounted in bearings e within a casing a carries a cross-piece f, the outer ends f<1> of which are resilient and adapted to engage laminated spring contacts h, j. The rod is hinged or loosely connected to a spindle b operated from outside the casing against a return spring c. An additional light return spring g is provided on the rod d. The cross-piece f is adjustably mounted on the rod.
GB2091018A 1918-12-16 1918-12-16 Improvements in Electric Ringing Keys. Expired GB135971A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2091018A GB135971A (en) 1918-12-16 1918-12-16 Improvements in Electric Ringing Keys.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2091018A GB135971A (en) 1918-12-16 1918-12-16 Improvements in Electric Ringing Keys.

Publications (1)

Publication Number Publication Date
GB135971A true GB135971A (en) 1919-12-11

Family

ID=32409193

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2091018A Expired GB135971A (en) 1918-12-16 1918-12-16 Improvements in Electric Ringing Keys.

Country Status (1)

Country Link
GB (1) GB135971A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012063004A1 (en) 2010-11-11 2012-05-18 Norberto Neves Device for dispensing a deodorant product for a toilet flushing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012063004A1 (en) 2010-11-11 2012-05-18 Norberto Neves Device for dispensing a deodorant product for a toilet flushing device

Similar Documents

Publication Publication Date Title
GB135971A (en) Improvements in Electric Ringing Keys.
GB270980A (en) Fluid-tight electric switch
US889533A (en) Illuminating electric clock and call system.
GB972462A (en) Electrical key switch
GB686453A (en) Improvements relating to housings for electrical components
GB111609A (en) Improvements in and connected with Electric Bells.
US2066402A (en) Electrical system
GB298779A (en) Improvements in or relating to telephone instruments
US2522726A (en) Control device for the automatic recording of telephone conversations
GB191213428A (en) Automatic Cut-out for Electric Lines.
US2522727A (en) Control device for the automatic recording of telephone conversations
GB191421536A (en) Improvements in or relating to Water Tight Electric Bells and the like.
GB111948A (en) Improvements in Electric Bells.
GB191212A (en) Improvements in electric burglar alarm apparatus
GB358921A (en) Improvements in telephone sets
GB178545A (en) Improvements in pressure and vacuum alarms
GB254776A (en) Improvements in switches
GB139087A (en) Electric switches
GB187531A (en) Improvements relating to electric sound-producing horns
GB190723669A (en) Improvements in Steam Generator Alarms and Damper-controlling Devices for use in connection with Steam Engines.
GB144964A (en) Improvements in or relating to electric bells
GB102162A (en) Improvements in Automatic Organs.
GB122931A (en) Improvements in Mine and like Electric Bells.
GB191120898A (en) Improvements relating to Telephonic Apparatus.
GB283149A (en) A repeater alarm or signalling device