GB345060A - Improvements in or relating to selectors particularly as used in automatic telephone systems - Google Patents

Improvements in or relating to selectors particularly as used in automatic telephone systems

Info

Publication number
GB345060A
GB345060A GB6092/30A GB609230A GB345060A GB 345060 A GB345060 A GB 345060A GB 6092/30 A GB6092/30 A GB 6092/30A GB 609230 A GB609230 A GB 609230A GB 345060 A GB345060 A GB 345060A
Authority
GB
United Kingdom
Prior art keywords
wires
arm
wipers
wiper
spring set
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
GB6092/30A
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB345060A publication Critical patent/GB345060A/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
    • H01H67/12—Linear-motion switches

Landscapes

  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Abstract

345,060. Automatic exchange switches. TELEFONAKTIEBOLAGET L. M. ERICSSON, 33, Kungsgatan, Stockholm. Feb. 24, 1930, No. 6092. Convention date, Oct. 23, 1929. [Class 40 (iv).] In a system in which a selector arm moves into a bare wire multiple bank, the bank wires are evenly distributed on either side of the arm and are evenly spaced. The wipers may be disconnected whilst the switch moves from position to position. In the arrangement shown in Fig. 1 the three wires of a circuit are all on one side of the arm, the wires of consecutive circuits being on opposite sides and being staggered to prevent simultaneous connection with two circuits. The " c " wire is disconnected between setting positions by means of the spring set 19 .. 22. This spring set may be replaced by revolving wiper tips insulated from the wires in two of three positions and revolved by the wires as indicated in Fig. 7. Alternatively the wires of a circuit may be distributed two on one side and one on the other of the wiper arm, as shown in Fig. 4, the relative sides being reversed for consecutive sets. A four-wiper arm is provided and a threeposition spring set connects wipers 27, 28, 25 to the a, b, and c wires respectively in the first position, wipers 26, 25 and 28 in the second position and. disconnects all wires in the third position in which wires of different groups engage the wiper tips.
GB6092/30A 1929-10-23 1930-02-24 Improvements in or relating to selectors particularly as used in automatic telephone systems Expired GB345060A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE345060X 1929-10-23

Publications (1)

Publication Number Publication Date
GB345060A true GB345060A (en) 1931-03-19

Family

ID=20308477

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6092/30A Expired GB345060A (en) 1929-10-23 1930-02-24 Improvements in or relating to selectors particularly as used in automatic telephone systems

Country Status (1)

Country Link
GB (1) GB345060A (en)

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