GB521004A - Improvements in or relating to selector switch banks - Google Patents

Improvements in or relating to selector switch banks

Info

Publication number
GB521004A
GB521004A GB3239038A GB3239038A GB521004A GB 521004 A GB521004 A GB 521004A GB 3239038 A GB3239038 A GB 3239038A GB 3239038 A GB3239038 A GB 3239038A GB 521004 A GB521004 A GB 521004A
Authority
GB
United Kingdom
Prior art keywords
strips
terminals
switches
portions
multipling
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
GB3239038A
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.)
FRANS VAN LAETHEM
Original Assignee
FRANS VAN LAETHEM
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 FRANS VAN LAETHEM filed Critical FRANS VAN LAETHEM
Priority to GB3239038A priority Critical patent/GB521004A/en
Publication of GB521004A publication Critical patent/GB521004A/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

Landscapes

  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

521,004. Automatic exchange switches. STANDARD TELEPHONES & CABLES, Ltd. (Laethem, F. van.). Nov. 8, 1938, No. 32390. [Class 40 (iv)] A unitary flat contact-' bank for a group of switches is built up of continuous self-multipling contact strips separated by insulating strips of wood impregnated with synthetic resin or of other heat-bondable material, the assembly being then subjected to heat and pressure. Various methods are described for punching the strips from blanks. In the upper portion of Fig. 1 the lines represent cuts and the shaded parts punched out portions, the punched blank being then expanded as shown in the lower half of the figure. The root portions of the terminals 5 of a group of strips are bent to bring the terminals to the same level and the terminals may be twisted to lie in planes at right angles to the contact strips. Figs. 10 and 11 show a method of producing strips for back-to-back switches, the multipling portions being in twisted zig-zag formation although expansion , into straight formation may be effected. Specification 521,144 is referred to.
GB3239038A 1938-11-08 1938-11-08 Improvements in or relating to selector switch banks Expired GB521004A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3239038A GB521004A (en) 1938-11-08 1938-11-08 Improvements in or relating to selector switch banks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3239038A GB521004A (en) 1938-11-08 1938-11-08 Improvements in or relating to selector switch banks

Publications (1)

Publication Number Publication Date
GB521004A true GB521004A (en) 1940-05-09

Family

ID=10337863

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3239038A Expired GB521004A (en) 1938-11-08 1938-11-08 Improvements in or relating to selector switch banks

Country Status (1)

Country Link
GB (1) GB521004A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718559A (en) * 1950-10-23 1955-09-20 Ericsson Telefon Ab L M Cross-bar switch
DE1033728B (en) * 1956-06-29 1958-07-10 Siemens Ag Method for producing a multiple contact field for telecommunications systems
DE1053573B (en) * 1957-04-17 1959-03-26 Siemens Ag Keypad for telecommunications, especially telephone systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2718559A (en) * 1950-10-23 1955-09-20 Ericsson Telefon Ab L M Cross-bar switch
DE1033728B (en) * 1956-06-29 1958-07-10 Siemens Ag Method for producing a multiple contact field for telecommunications systems
DE1053573B (en) * 1957-04-17 1959-03-26 Siemens Ag Keypad for telecommunications, especially telephone systems

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