GB260497A - Improvements in electric signalling systems - Google Patents

Improvements in electric signalling systems

Info

Publication number
GB260497A
GB260497A GB1075226A GB1075226A GB260497A GB 260497 A GB260497 A GB 260497A GB 1075226 A GB1075226 A GB 1075226A GB 1075226 A GB1075226 A GB 1075226A GB 260497 A GB260497 A GB 260497A
Authority
GB
United Kingdom
Prior art keywords
bell
switch
lamp
lit
terminals
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
GB1075226A
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.)
WILLIAM KENNETH LEWIS
Original Assignee
WILLIAM KENNETH LEWIS
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 WILLIAM KENNETH LEWIS filed Critical WILLIAM KENNETH LEWIS
Priority to GB1075226A priority Critical patent/GB260497A/en
Publication of GB260497A publication Critical patent/GB260497A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Audible And Visible Signals (AREA)

Abstract

260,497. Lewis, W. K. and Anido, A. J. April 23, 1926. Indicating ringing of bells to operators. - An indication of the operation of a bell &c. g is given by associating the bell with an ordinary electric lighting circuit, having a lamp a and a switch b. A 2-way switch c in which the terminals h, i are normally connected is connected at the signalling end to the lamp a, switch b, and bell g as shown in Fig. 1. Ringing of the bell is effected by pressing the switch to connect the terminals h, j. If the lamp a is lit when the switch c is operated, it remains lit. provided the bell rings. If it is out, it is lit on the operation of the switch, again provided the bell rings. In both cases, if the bell fails to ring, the lamp is not lit. A pendulum indicator f may be placed in series with the bell, and additional circuits k may be employed for other indicators. A resistance is shunted across the bell.
GB1075226A 1926-04-23 1926-04-23 Improvements in electric signalling systems Expired GB260497A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1075226A GB260497A (en) 1926-04-23 1926-04-23 Improvements in electric signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1075226A GB260497A (en) 1926-04-23 1926-04-23 Improvements in electric signalling systems

Publications (1)

Publication Number Publication Date
GB260497A true GB260497A (en) 1926-11-04

Family

ID=9973611

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1075226A Expired GB260497A (en) 1926-04-23 1926-04-23 Improvements in electric signalling systems

Country Status (1)

Country Link
GB (1) GB260497A (en)

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