GB329445A - Improvements in and relating to electric switches - Google Patents

Improvements in and relating to electric switches

Info

Publication number
GB329445A
GB329445A GB972729A GB972729A GB329445A GB 329445 A GB329445 A GB 329445A GB 972729 A GB972729 A GB 972729A GB 972729 A GB972729 A GB 972729A GB 329445 A GB329445 A GB 329445A
Authority
GB
United Kingdom
Prior art keywords
relating
electric switches
switches
electric
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
GB972729A
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 GB972729A priority Critical patent/GB329445A/en
Publication of GB329445A publication Critical patent/GB329445A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
    • H01H1/10—Laminated contacts with divided contact surface
GB972729A 1929-03-26 1929-03-26 Improvements in and relating to electric switches Expired GB329445A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB972729A GB329445A (en) 1929-03-26 1929-03-26 Improvements in and relating to electric switches

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB972729A GB329445A (en) 1929-03-26 1929-03-26 Improvements in and relating to electric switches

Publications (1)

Publication Number Publication Date
GB329445A true GB329445A (en) 1930-05-22

Family

ID=9877591

Family Applications (1)

Application Number Title Priority Date Filing Date
GB972729A Expired GB329445A (en) 1929-03-26 1929-03-26 Improvements in and relating to electric switches

Country Status (1)

Country Link
GB (1) GB329445A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765077C (en) * 1940-05-11 1954-09-27 Aeg Crank switch for precision measurements
US2786104A (en) * 1952-11-04 1957-03-19 Muirhead & Co Ltd Rotary stud switches
DE1118860B (en) * 1958-05-02 1961-12-07 Smit & Willem & Co Nv Step switch for high voltage for step transformers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765077C (en) * 1940-05-11 1954-09-27 Aeg Crank switch for precision measurements
US2786104A (en) * 1952-11-04 1957-03-19 Muirhead & Co Ltd Rotary stud switches
DE1118860B (en) * 1958-05-02 1961-12-07 Smit & Willem & Co Nv Step switch for high voltage for step transformers

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