GB194747A - Improvements in or relating to apparatus especially useful as relay, oscillograph, telephone, automatic current or tension regulator and other arrangements sensitive to variations of electric tensions - Google Patents

Improvements in or relating to apparatus especially useful as relay, oscillograph, telephone, automatic current or tension regulator and other arrangements sensitive to variations of electric tensions

Info

Publication number
GB194747A
GB194747A GB3035721A GB3035721A GB194747A GB 194747 A GB194747 A GB 194747A GB 3035721 A GB3035721 A GB 3035721A GB 3035721 A GB3035721 A GB 3035721A GB 194747 A GB194747 A GB 194747A
Authority
GB
United Kingdom
Prior art keywords
oscillograph
relay
telephone
arrangements
relating
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
GB3035721A
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 GB3035721A priority Critical patent/GB194747A/en
Publication of GB194747A publication Critical patent/GB194747A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H45/00—Details of relays

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

194,747. Johnsen, F. A., and Rahbek, K. Nov. 14, 1921. Addition to 144,761, [Class 40 (ii), Phonographs &c.]. Drawings to Specification, Processes, special.-In the apparatus described in the parent Specification in which the friction between two bodies in relative movement is varied electrostatically, the moving body is continuously cleaned or polished by a grindstone or by polishing material applied to softer bodies such as leather, wood, wool, or paper, or by polishing material distributed through rubber. The grindstone or rubber is itself periodically cleaned by rubbing on a second grindstone, rubber, or file. If the moving body is a rotating cylinder, the grinding medium may during its reciprocating movement engage a rough part of the cylinder where it is cleaned by attrition.
GB3035721A 1921-11-14 1921-11-14 Improvements in or relating to apparatus especially useful as relay, oscillograph, telephone, automatic current or tension regulator and other arrangements sensitive to variations of electric tensions Expired GB194747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3035721A GB194747A (en) 1921-11-14 1921-11-14 Improvements in or relating to apparatus especially useful as relay, oscillograph, telephone, automatic current or tension regulator and other arrangements sensitive to variations of electric tensions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3035721A GB194747A (en) 1921-11-14 1921-11-14 Improvements in or relating to apparatus especially useful as relay, oscillograph, telephone, automatic current or tension regulator and other arrangements sensitive to variations of electric tensions

Publications (1)

Publication Number Publication Date
GB194747A true GB194747A (en) 1923-03-14

Family

ID=10306357

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3035721A Expired GB194747A (en) 1921-11-14 1921-11-14 Improvements in or relating to apparatus especially useful as relay, oscillograph, telephone, automatic current or tension regulator and other arrangements sensitive to variations of electric tensions

Country Status (1)

Country Link
GB (1) GB194747A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737569A (en) * 1969-02-26 1973-06-05 Xerox Corp Transmission device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3737569A (en) * 1969-02-26 1973-06-05 Xerox Corp Transmission device

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