GB605049A - Electrical signalling - Google Patents

Electrical signalling

Info

Publication number
GB605049A
GB605049A GB24603/44A GB2460344A GB605049A GB 605049 A GB605049 A GB 605049A GB 24603/44 A GB24603/44 A GB 24603/44A GB 2460344 A GB2460344 A GB 2460344A GB 605049 A GB605049 A GB 605049A
Authority
GB
United Kingdom
Prior art keywords
rectifier
springs
relays
line
relay
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
GB24603/44A
Other languages
English (en)
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority claimed from US523626A external-priority patent/US2406001A/en
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority claimed from US723446A external-priority patent/US2502440A/en
Publication of GB605049A publication Critical patent/GB605049A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of dc signals of alternating polarity, coded pulses or impedance dialling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/32—Signalling arrangements; Manipulation of signalling currents using trains of dc pulses
    • H04Q1/34—Impulse regenerators with mechanical or other non-electrical marking arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Telephone Set Structure (AREA)
GB24603/44A 1944-02-24 1944-12-08 Electrical signalling Expired GB605049A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US523626A US2406001A (en) 1944-02-24 1944-02-24 Electrical signaling system
US583478A US2434910A (en) 1944-02-24 1945-03-19 Electrical impulse sending device
US723446A US2502440A (en) 1947-01-21 1947-01-21 Variable impulse transmitter

Publications (1)

Publication Number Publication Date
GB605049A true GB605049A (en) 1948-07-15

Family

ID=27414872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24603/44A Expired GB605049A (en) 1944-02-24 1944-12-08 Electrical signalling

Country Status (7)

Country Link
US (1) US2434910A (da)
BE (2) BE466097A (da)
CH (2) CH265061A (da)
DE (1) DE869502C (da)
FR (2) FR938184A (da)
GB (1) GB605049A (da)
NL (1) NL70470C (da)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US316686A (en) * 1885-04-28 van hoevenbeegh
US1251249A (en) * 1915-01-18 1917-12-25 Joseph H Lehman Combined timer, distributer, and current-reversing device.
US1415369A (en) * 1917-10-30 1922-05-09 Joseph H Lehman Electric-current making, breaking, and reversing device
US1743711A (en) * 1925-11-21 1930-01-14 Bell Telephone Labor Inc Supervisory system
US2052057A (en) * 1929-01-04 1936-08-25 Reid Frederick Fire alarm system
US2136630A (en) * 1935-08-13 1938-11-15 Bell Telephone Labor Inc Telephone system
GB501353A (en) * 1937-08-25 1939-02-27 Automatic Telephone & Elect Improvements in or relating to impulse sending arrangements for use in telephone or like systems

Also Published As

Publication number Publication date
FR938184A (fr) 1948-09-07
BE467162A (da)
FR58602E (fr) 1954-03-02
CH265061A (fr) 1949-11-15
DE869502C (de) 1953-03-05
CH269356A (de) 1950-06-30
BE466097A (da)
US2434910A (en) 1948-01-27
NL70470C (da)

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