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 systemsInfo
- 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
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.
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) |
-
1930
- 1930-02-24 GB GB6092/30A patent/GB345060A/en not_active Expired
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