GB205062A - Improvements in switching apparatus for telephone exchange systems - Google Patents

Improvements in switching apparatus for telephone exchange systems

Info

Publication number
GB205062A
GB205062A GB22819/23A GB2281923A GB205062A GB 205062 A GB205062 A GB 205062A GB 22819/23 A GB22819/23 A GB 22819/23A GB 2281923 A GB2281923 A GB 2281923A GB 205062 A GB205062 A GB 205062A
Authority
GB
United Kingdom
Prior art keywords
ratchet
vertical
rotary
pawl
magnet
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
GB22819/23A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB205062A publication Critical patent/GB205062A/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
    • H01H67/14—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection
    • H01H67/16—Multi-position wiper switches having wipers movable in two mutually perpendicular directions for purpose of selection one motion being rotary and the other being parallel to the axis of rotation, e.g. Strowger or "up and around" switches

Abstract

205,062. McBerty, F. R. Oct. 6, 1922, [Convention date]. Automatic exchange apparatus; selectors.- -The wipers of selector in which the rotary precedes the vertical movement are relieved of the pressure of the returning spring while they are in engagement with the bank terminals. The wiper carriage may be disengaged from the, operating mechanism to allow of inspection of the wipers and the operating mechanism is arranged so that during the rotary movement the vertical mechanism is not moved and vice versa. As shown, Fig. 1, the speech and test terminals are arranged in a single bank, the two sets being separated by a metal sector 51 into which are screwed the bolts holding the bank together. The wiper carriage 3 is of insulating material and mounted on a fixed rod 4 and engages the rotary ratchet 17 by means of pins 25 and slots 26, Fig. 3. An arm 38 carried by the vertical ratchet 32 carries a pin 39 which works in a groove 40 surrounding the carriage. The magnet 11 drives the ratchet 17 against a spring 27 which is arranged inside the ratchet. Stops 22, 23 are so arranged that the armature 15 and pawl 16 respectively reach them simultaneously, to minimize wear of pawl 16. The armature-returning spring 19 is adjusted by means of a screw 21 the pitch of which is greater than that of the spring, the inside of which it engages. The ratchet 32 is operated by magnet 12 through a pawl 31. At the first vertical step the slots 26 leave the pins 25 so that the wipers are relieved of the pressure of the returning spring. Vertical release is effected by magnet 13 which disengages detent 36 and pawl 31 and allows the wiper carriage to drop to its lowest position, in which it is in engagement with the rotary ratchet, after which, e.g. by means of vertical off-normal springs 44, magnet 14 is operated and releases the rotary ratchet. The supporting frame 1 is stamped from sheet metal, the supporting members 8 - - 10 being integral with it, and most of the other parts are also stamped from sheet metal. The insulating parts are machined from hard rubber, a phenolic condensation substance &c.
GB22819/23A 1922-10-06 1923-09-11 Improvements in switching apparatus for telephone exchange systems Expired GB205062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US205062XA 1922-10-06 1922-10-06

Publications (1)

Publication Number Publication Date
GB205062A true GB205062A (en) 1924-05-08

Family

ID=21798979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22819/23A Expired GB205062A (en) 1922-10-06 1923-09-11 Improvements in switching apparatus for telephone exchange systems

Country Status (1)

Country Link
GB (1) GB205062A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657590A (en) * 1949-05-03 1953-11-03 Automatic Elect Lab Double dog detent for two-motion switches
EP0072115A1 (en) * 1981-08-03 1983-02-16 General Motors Corporation Remote control unit
US4481585A (en) * 1981-08-03 1984-11-06 General Motors Corporation System for selectively controlling motor vehicle electrical loads

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657590A (en) * 1949-05-03 1953-11-03 Automatic Elect Lab Double dog detent for two-motion switches
EP0072115A1 (en) * 1981-08-03 1983-02-16 General Motors Corporation Remote control unit
US4481585A (en) * 1981-08-03 1984-11-06 General Motors Corporation System for selectively controlling motor vehicle electrical loads

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