GB385384A - Improvements relating to automatic telephone and like selective systems - Google Patents

Improvements relating to automatic telephone and like selective systems

Info

Publication number
GB385384A
GB385384A GB2911631A GB2911631A GB385384A GB 385384 A GB385384 A GB 385384A GB 2911631 A GB2911631 A GB 2911631A GB 2911631 A GB2911631 A GB 2911631A GB 385384 A GB385384 A GB 385384A
Authority
GB
United Kingdom
Prior art keywords
outlets
class
odd
impulses
received
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
GB2911631A
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.)
Siemens Brothers and Co Ltd
Original Assignee
Siemens Brothers and Co Ltd
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 Siemens Brothers and Co Ltd filed Critical Siemens Brothers and Co Ltd
Priority to GB2911631A priority Critical patent/GB385384A/en
Publication of GB385384A publication Critical patent/GB385384A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

385,384. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and PATTERSON, W. G., 68, Eltham Road, Lee, both in London, and LONG, D. P., 3, Ingleby Way, Chislehurst, Kent. Oct. 20, 1931, No. 29116. Drawings to Specification. [Class 40 (iv).] In a single-motion selector which has two sets of wipers giving access to different groups of outlets and advances automatically during impulse reception, impulses are received by a pair of relays which at each odd impulse mark a stopping point at the beginning of the two corresponding groups of outlets. In one embodiment, which is identical with the incoming selector, shown in Fig. 7, of Specification 378,585, the wiper-switching relay is controlled by a discriminating signal from the preceding selecting stage, while in the other embodiment, which is substantially similar in other respects, the marking relays control wiper-switching according as the number of impulses received is odd or even. Specification 221,316, [Class 40 (iv), Telephones &c.], also is referred to.
GB2911631A 1931-10-20 1931-10-20 Improvements relating to automatic telephone and like selective systems Expired GB385384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2911631A GB385384A (en) 1931-10-20 1931-10-20 Improvements relating to automatic telephone and like selective systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2911631A GB385384A (en) 1931-10-20 1931-10-20 Improvements relating to automatic telephone and like selective systems

Publications (1)

Publication Number Publication Date
GB385384A true GB385384A (en) 1932-12-29

Family

ID=10286411

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2911631A Expired GB385384A (en) 1931-10-20 1931-10-20 Improvements relating to automatic telephone and like selective systems

Country Status (1)

Country Link
GB (1) GB385384A (en)

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