GB304773A - Improvements in or relating to automatic switches for use in telephone or like systems - Google Patents

Improvements in or relating to automatic switches for use in telephone or like systems

Info

Publication number
GB304773A
GB304773A GB2074/29A GB207429A GB304773A GB 304773 A GB304773 A GB 304773A GB 2074/29 A GB2074/29 A GB 2074/29A GB 207429 A GB207429 A GB 207429A GB 304773 A GB304773 A GB 304773A
Authority
GB
United Kingdom
Prior art keywords
prong
engages
telephone
wipers
ledge
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
GB2074/29A
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.)
Associated Telephone and Telegraph Co
Original Assignee
Associated Telephone and Telegraph Co
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 Associated Telephone and Telegraph Co filed Critical Associated Telephone and Telegraph Co
Publication of GB304773A publication Critical patent/GB304773A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/02—Multi-position wiper switches
    • H01H67/04—Multi-position wiper switches having wipers movable only in one direction for purpose of selection
    • H01H67/06—Rotary switches, i.e. having angularly movable wipers

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Transmission Devices (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

304,773. Associated Telephone & Telegraph Co., (Assignees of Sengebusch, H.). Jan. 27, 1928, [Convention date]. Automatic exchange selectors.-A rotary switch with bare wire multiples has wipers, Fig. 4, of which the part 28 engages plates 3 while the part 29 (prong 30) engages the wires. The prong 31 engages a, ledge 2 to prevent the prong 30 from engaging two wires at once, but the ledge may be absent from the part 9 of the circumference occupied by test multiples. The plates 3 are moulded in an insulating base 1 mounted by screws on an angle-iron 10. Eight wipers are mounted 45 degrees apart on an insulating spider 16, driven by a ratchet wheel 26 under the base 1.
GB2074/29A 1928-01-27 1929-01-21 Improvements in or relating to automatic switches for use in telephone or like systems Expired GB304773A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US249815A US1737807A (en) 1928-01-27 1928-01-27 Switch mechanism

Publications (1)

Publication Number Publication Date
GB304773A true GB304773A (en) 1930-04-22

Family

ID=22945129

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2074/29A Expired GB304773A (en) 1928-01-27 1929-01-21 Improvements in or relating to automatic switches for use in telephone or like systems

Country Status (2)

Country Link
US (1) US1737807A (en)
GB (1) GB304773A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2568050A (en) * 1946-04-05 1951-09-18 Siemens Brothers & Co Ltd Rotary selective switch
US2698884A (en) * 1950-09-21 1955-01-04 Raymond T Moloney Rotary switch contact assembly
CA965149A (en) * 1972-12-18 1975-03-25 Vernon E. Dickson Rotary switch

Also Published As

Publication number Publication date
US1737807A (en) 1929-12-03

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