GB604992A - Improvements in selecting switches such as are used in automatic telephone systems - Google Patents

Improvements in selecting switches such as are used in automatic telephone systems

Info

Publication number
GB604992A
GB604992A GB3347745A GB3347745A GB604992A GB 604992 A GB604992 A GB 604992A GB 3347745 A GB3347745 A GB 3347745A GB 3347745 A GB3347745 A GB 3347745A GB 604992 A GB604992 A GB 604992A
Authority
GB
United Kingdom
Prior art keywords
rubber
telephone systems
row
automatic telephone
adjacent
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
GB3347745A
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 GB3347745A priority Critical patent/GB604992A/en
Publication of GB604992A publication Critical patent/GB604992A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H63/00—Details of electrically-operated selector switches
    • H01H63/02—Contacts; Wipers; Connections thereto
    • H01H63/06—Contact banks

Abstract

604,992. Automatic exchange switches. SIEMENS BROS. & CO., Ltd., and PRICE, J. Dec. 11, 1945, No. 33477. [Class 40 (iv)] A layer of rubber or rubber-like material of an elastic character is placed adjacent to each row of contacts in a selecting switch. This allows the rows to be compressed axially until correct spacing between adjacent rows is achieved and this compression forces the rubber between adjacent terminals in a row so as to exclude dust and moisture. The rubber layer may be provided on one or both sides of a rigid spacer of impregnated paper board or similar material.
GB3347745A 1945-12-11 1945-12-11 Improvements in selecting switches such as are used in automatic telephone systems Expired GB604992A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3347745A GB604992A (en) 1945-12-11 1945-12-11 Improvements in selecting switches such as are used in automatic telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3347745A GB604992A (en) 1945-12-11 1945-12-11 Improvements in selecting switches such as are used in automatic telephone systems

Publications (1)

Publication Number Publication Date
GB604992A true GB604992A (en) 1948-07-14

Family

ID=10353481

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3347745A Expired GB604992A (en) 1945-12-11 1945-12-11 Improvements in selecting switches such as are used in automatic telephone systems

Country Status (1)

Country Link
GB (1) GB604992A (en)

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