GB191016336A - Improvements in "A Central Energy Electrical Signalling System." - Google Patents

Improvements in "A Central Energy Electrical Signalling System."

Info

Publication number
GB191016336A
GB191016336A GB191016336DA GB191016336A GB 191016336 A GB191016336 A GB 191016336A GB 191016336D A GB191016336D A GB 191016336DA GB 191016336 A GB191016336 A GB 191016336A
Authority
GB
United Kingdom
Prior art keywords
relay
circuit
loop
wheel
transmitting
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
Inventor
Albert Goldstein
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
Application granted granted Critical
Publication of GB191016336A publication Critical patent/GB191016336A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/16—Security signalling or alarm systems, e.g. redundant systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)

Abstract

16,336. Goldstein, A. July 8. Fire, police, and like alarm systems.-In normally-closed metallic circuit systems in which a number of transmitting-stations T, T', T<2> are arranged in loops I, II, III in the circuit, it is arranged that, when a break occurs at a point such as Z in a loop I, the loop is short-circuited first through the high - resistance coil of the thermostatic bar S, and then through the bar at the contact 7 and a part of the coil. At a transmitting- station, the wheel N gives a ground connexion during signalling, and the code-wheel M operates the contacts m, m<1>. At the central station, the relays D, E operate the indicator lamp P, Q. The relay B is included in the normal circuit, but when signals are sent the relay F becomes unbalanced and short-circuits the relay B. If one of the grounds G; G<1>, G<2>, G<3> fails, the signals are received over the normal metallic circuit, and the magnet B is given sufficient lag not to respond to the signal impulses.
GB191016336D 1910-07-08 1910-07-08 Improvements in "A Central Energy Electrical Signalling System." Expired GB191016336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191016336T 1910-07-08

Publications (1)

Publication Number Publication Date
GB191016336A true GB191016336A (en) 1911-03-02

Family

ID=33445804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191016336D Expired GB191016336A (en) 1910-07-08 1910-07-08 Improvements in "A Central Energy Electrical Signalling System."

Country Status (1)

Country Link
GB (1) GB191016336A (en)

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