GB785513A - Improvements in electric cables for fire protection systems - Google Patents

Improvements in electric cables for fire protection systems

Info

Publication number
GB785513A
GB785513A GB650756A GB650756A GB785513A GB 785513 A GB785513 A GB 785513A GB 650756 A GB650756 A GB 650756A GB 650756 A GB650756 A GB 650756A GB 785513 A GB785513 A GB 785513A
Authority
GB
United Kingdom
Prior art keywords
fire protection
electric cables
protection systems
core
wire
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
GB650756A
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.)
Mather and Platt Ltd
Original Assignee
Mather and Platt 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 Mather and Platt Ltd filed Critical Mather and Platt Ltd
Priority to GB650756A priority Critical patent/GB785513A/en
Publication of GB785513A publication Critical patent/GB785513A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Insulated Conductors (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

785,513. Cables. MATHER & PLATT, Ltd. (Grinnell Corporation). March 1, 1956, No. 6507/56. Class 36. [Also in Group XXXVIII] A cable for use in a fire-detecting system (see Group XXXVIII) comprises a conducting core 12 and a wire 14 wrapped therearound and insulated therefrom. The core and/or the wire may be insulated, and both may comprise a number of wires connected either in series or parallel, the overall resistance of the wrapping and the core being equal.
GB650756A 1956-03-01 1956-03-01 Improvements in electric cables for fire protection systems Expired GB785513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB650756A GB785513A (en) 1956-03-01 1956-03-01 Improvements in electric cables for fire protection systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB650756A GB785513A (en) 1956-03-01 1956-03-01 Improvements in electric cables for fire protection systems

Publications (1)

Publication Number Publication Date
GB785513A true GB785513A (en) 1957-10-30

Family

ID=9815776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB650756A Expired GB785513A (en) 1956-03-01 1956-03-01 Improvements in electric cables for fire protection systems

Country Status (1)

Country Link
GB (1) GB785513A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100416616C (en) * 2005-11-14 2008-09-03 李刚进 Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100416616C (en) * 2005-11-14 2008-09-03 李刚进 Fire detecting cable based on memory alloy wire and pressure-sensing conductive rubber and alarm method

Similar Documents

Publication Publication Date Title
GB1226766A (en)
GB785513A (en) Improvements in electric cables for fire protection systems
JPS5279706A (en) Subscriber line calling system in key telephone unit
CA616093A (en) Sheath and hanger clamp for electrical distribution system
CH612808A5 (en) Device for coupling one of a plurality of insulated double wires running in a phase cable of a medium-voltage line, for communications systems
GB880866A (en) Improvements in and relating to pull-wire signalling systems for use in mines, quarries and the like
GB895501A (en) Improvements in or relating to stranded alternating current conductors
GB946402A (en) Single and multi-wired electric cables
CA590687A (en) Connecting electrical conductors
GB885233A (en) Improvements in or relating to connections between electric conductors
GB872706A (en) Improvements in or relating to joints for multi-conductor telephone cables
AU235411B2 (en) Three wire electric distribution system
GB1140113A (en) Improvements in and relating to insulated electrical conductors
CA625845A (en) Conductor bar and sheath for electrical distribution system
CA549137A (en) Transmission line insulator and wire clamp unit
GB1255246A (en) Improvements relating to flat shielded cables
AU4565759A (en) Three wire electric distribution system
GB919704A (en) Improvements in or relating to electric cable joints
GB797490A (en) Improvements in or relating to transposed electrical conductors
CA597280A (en) Multiple electric wire connector
CA641280A (en) Insulated electrical conductors and coils
CA591684A (en) Electrical insulation system
CA611344A (en) Electric terminal for cables and apparatus
JPS52139306A (en) Calling system for key telephone equipment
CA575515A (en) Wire cutter and insulation stripping apparatus