GB155123A - Improvements in indicators or annunciators - Google Patents

Improvements in indicators or annunciators

Info

Publication number
GB155123A
GB155123A GB19020A GB19020A GB155123A GB 155123 A GB155123 A GB 155123A GB 19020 A GB19020 A GB 19020A GB 19020 A GB19020 A GB 19020A GB 155123 A GB155123 A GB 155123A
Authority
GB
United Kingdom
Prior art keywords
pendulum
armature
core
slip
bent
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
GB19020A
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.)
STERLING TELEPHONE AND ELECTRI
Original Assignee
STERLING TELEPHONE AND ELECTRI
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 STERLING TELEPHONE AND ELECTRI filed Critical STERLING TELEPHONE AND ELECTRI
Priority to GB19020A priority Critical patent/GB155123A/en
Publication of GB155123A publication Critical patent/GB155123A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B5/00—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
    • G08B5/22—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission
    • G08B5/24—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane
    • G08B5/30—Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied using electric transmission; using electromagnetic transmission with indicator element moving about a pivot, e.g. hinged flap or rotating vane with rotating or oscillating members, e.g. vanes

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Displays For Variable Information Using Movable Means (AREA)

Abstract

155,123. Sterling Telephone & Electric Co., and Bell, F. G. Jan. 2, 1920. Vibrating-disk indicators or annunciators.- The armature is formed of a bent slip of iron 7, so shaped that the part nearest the core 6 when the pendulum is hauging vertical is at a less distance from the point of suspension of the pendulum than the part of the armature which approaches the core when the pendulum swings to one side. The pendulum portion shown in Fig. 3, consists of a bent slip 1 of thin non-magnetic metal the two parallel portions of which are provided with perforations 2, Fig. 1, by means of which the pendulum is slung over an arm of the bracket 3 carried in the casing 4. Between the two parallel parts of the slip 1 is carried the bent armature 7, which at no position of the pendulum can make contact with the core 6.
GB19020A 1920-01-02 1920-01-02 Improvements in indicators or annunciators Expired GB155123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB19020A GB155123A (en) 1920-01-02 1920-01-02 Improvements in indicators or annunciators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB19020A GB155123A (en) 1920-01-02 1920-01-02 Improvements in indicators or annunciators

Publications (1)

Publication Number Publication Date
GB155123A true GB155123A (en) 1920-12-16

Family

ID=9699986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19020A Expired GB155123A (en) 1920-01-02 1920-01-02 Improvements in indicators or annunciators

Country Status (1)

Country Link
GB (1) GB155123A (en)

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