GB216624A - Improvements in electric drum-type controllers - Google Patents

Improvements in electric drum-type controllers

Info

Publication number
GB216624A
GB216624A GB897323A GB897323A GB216624A GB 216624 A GB216624 A GB 216624A GB 897323 A GB897323 A GB 897323A GB 897323 A GB897323 A GB 897323A GB 216624 A GB216624 A GB 216624A
Authority
GB
United Kingdom
Prior art keywords
drum
contacts
sections
electric drum
type controllers
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
GB897323A
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.)
Crompton & Co Ltd
Original Assignee
Crompton & 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 Crompton & Co Ltd filed Critical Crompton & Co Ltd
Priority to GB897323A priority Critical patent/GB216624A/en
Publication of GB216624A publication Critical patent/GB216624A/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

Landscapes

  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Display Devices Of Pinball Game Machines (AREA)

Abstract

216,624. Crompton & Co., Ltd., and Jones, W. F. March 29, 1923. Controllers, drum.-The drum is composed of a number of sections of insulating material B threaded on a spindle D and formed with projecting and recessed parts for mutual engagement. Other recesses M formed on the peripheral surfaces of the drum receive contacts L, which may be cemented in place. The contacts have removable copper facings S. Internal grooves and holes in the sections B accommodate metal rods R for making longitudinal connections between the contacts, and rings N for making transverse connections.
GB897323A 1923-03-29 1923-03-29 Improvements in electric drum-type controllers Expired GB216624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB897323A GB216624A (en) 1923-03-29 1923-03-29 Improvements in electric drum-type controllers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB897323A GB216624A (en) 1923-03-29 1923-03-29 Improvements in electric drum-type controllers

Publications (1)

Publication Number Publication Date
GB216624A true GB216624A (en) 1924-06-05

Family

ID=9862867

Family Applications (1)

Application Number Title Priority Date Filing Date
GB897323A Expired GB216624A (en) 1923-03-29 1923-03-29 Improvements in electric drum-type controllers

Country Status (1)

Country Link
GB (1) GB216624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE879406C (en) * 1942-11-28 1953-06-11 David Burkhardt Shift drum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE879406C (en) * 1942-11-28 1953-06-11 David Burkhardt Shift drum

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