GB436404A - Improvements in manually operable selectors suitable for use in intercommunicating telephone systems - Google Patents

Improvements in manually operable selectors suitable for use in intercommunicating telephone systems

Info

Publication number
GB436404A
GB436404A GB18417/34A GB1841734A GB436404A GB 436404 A GB436404 A GB 436404A GB 18417/34 A GB18417/34 A GB 18417/34A GB 1841734 A GB1841734 A GB 1841734A GB 436404 A GB436404 A GB 436404A
Authority
GB
United Kingdom
Prior art keywords
contacts
series
contact
finger
discriminating
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
GB18417/34A
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
Priority to GB18417/34A priority Critical patent/GB436404A/en
Priority to US27429A priority patent/US2073568A/en
Publication of GB436404A publication Critical patent/GB436404A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M9/00Arrangements for interconnection not involving centralised switching
    • H04M9/002Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Telephone Set Structure (AREA)

Abstract

436,404. Intercommunication systems. SHIPTON, E., 12, Dartmouth Street, Westminster. June 21, 1934, Nos. 18417 and 22659. [Class 40 (iv)] [See also Group XXXVII] In selecting switches for use in intercommunicating telephone systems and other remote control systems of the type described in Specification 418,388, in order to increase the number of possible lines to which connection may be made, a manually operable selector is provided with one or more wipers which co-operate with two or more groups of contacts, a manually operable selector moving the wiper on to a contact and discriminating means selecting the contact group over which the signal is transmitted. In the arrangement shown diagrammatically in Fig. 5, a single contact wiper is arranged on the first operation of the manual selecting member to engage any selected one of a set of contacts 1 ... 10 and on a subsequent operation, without replacement of the telephone instrument, engages any selected one of a second series of contacts 11 ... 20 which are interleaved between the first series of contacts 1 ... 10. In order to effect this discriminating action in successive operations of the manual selecting member, the driving disc 4, Fig. 3, which is rotated by the fingerhold plate carries a discriminating member 14 which is pivoted thereto. On the first rotation of the finger-hold plate the upturned end 13<a> of the driven member 13 is engaged by a stepped portion 14<b> of the discriminating member so that the contact wiper 15 operated by the driven member stops opposite one of the first series of contacts 1 ... 10. On a second operation, however, the discriminating member is swung to the right by the spring 14<c> so that the driven member is engaged by the advanced leading edge of the discriminating member, the contact wiper then stopping opposite a selected one of the second series of contacts. Automatic locking means released by replacement of the telephone instrument are provided similar to those described in Specification 418,388. These interlocks hold the contact carrier in its displaced position while permitting the return of the finger-hold plate after operation. The contacts 31, 32 which are closed to complete the battery circuit on the return of the finger-hold plate serve also to guide the pin 14d of the discriminating member, moving it against the light spring 14<c> to the left of the slot 4<a> when the parts are in their normal unoperated position so that the sequence of operations already described can take place in successive dialling movements. In a modified arrangement shown in Fig. 6' two separate wipers 60, 61 engage with the two series of contacts 62, 63. A cam 70 operated with the finger-hold plate causes the stepping round of a disc 67 by a pawl 68 on each operation of the finger-hold plate, so moving a contact arm 64 to one or other of a pair of contacts 65, 66. Thus the control of the particular series in which a selected contact is operative is controlled in accordance with the number of operations made by the finger-hold plate. The selection of the particular series of contacts to be brought into circuit may, however, be effected by a directly-operated manual selecting switch.
GB18417/34A 1934-06-21 1934-06-21 Improvements in manually operable selectors suitable for use in intercommunicating telephone systems Expired GB436404A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB18417/34A GB436404A (en) 1934-06-21 1934-06-21 Improvements in manually operable selectors suitable for use in intercommunicating telephone systems
US27429A US2073568A (en) 1934-06-21 1935-06-19 Manually operable selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB18417/34A GB436404A (en) 1934-06-21 1934-06-21 Improvements in manually operable selectors suitable for use in intercommunicating telephone systems

Publications (1)

Publication Number Publication Date
GB436404A true GB436404A (en) 1935-10-10

Family

ID=10112081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18417/34A Expired GB436404A (en) 1934-06-21 1934-06-21 Improvements in manually operable selectors suitable for use in intercommunicating telephone systems

Country Status (2)

Country Link
US (1) US2073568A (en)
GB (1) GB436404A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL91183C (en) * 1954-01-19

Also Published As

Publication number Publication date
US2073568A (en) 1937-03-09

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