GB239521A - Safety cable for preventing explosions - Google Patents

Safety cable for preventing explosions

Info

Publication number
GB239521A
GB239521A GB22012/25A GB2201225A GB239521A GB 239521 A GB239521 A GB 239521A GB 22012/25 A GB22012/25 A GB 22012/25A GB 2201225 A GB2201225 A GB 2201225A GB 239521 A GB239521 A GB 239521A
Authority
GB
United Kingdom
Prior art keywords
conductor
current
main
safety cable
cut
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
GB22012/25A
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
Publication of GB239521A publication Critical patent/GB239521A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/32—Insulated conductors or cables characterised by their form with arrangements for indicating defects, e.g. breaks or leaks

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

239,521. Sejvl, J. Sept. 4, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Protective a r - rangements. - An electric cable, especially for use in mines is provided with an outer coating of insulated conductors connected in series and carrying a voltage lower than that in the m a i n conductor and so arranged that if the auxiliary conductor is broken the current in the main conductor is cut off. The current in the auxiliary conductor 4 may be supplied from the main conductors 1 through a resistance or by means of a transformer 10, and the conductor 4 is connected with a relay 9 which, when the current in the conductor 4 ceases, allows the automatic switch 7, 8 to open and cut off the current in in the main conductor.
GB22012/25A 1924-09-04 1925-09-03 Safety cable for preventing explosions Expired GB239521A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS239521X 1924-09-04

Publications (1)

Publication Number Publication Date
GB239521A true GB239521A (en) 1926-06-10

Family

ID=5451392

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22012/25A Expired GB239521A (en) 1924-09-04 1925-09-03 Safety cable for preventing explosions

Country Status (1)

Country Link
GB (1) GB239521A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342614A1 (en) * 1988-05-17 1989-11-23 ELECTRICAL SAFETY COMPANY S.r.l. Safety power supply system for movable electric machines
US9683439B2 (en) 2013-10-29 2017-06-20 Halliburton Energy Services, Inc. Safety cable for downhole communications

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0342614A1 (en) * 1988-05-17 1989-11-23 ELECTRICAL SAFETY COMPANY S.r.l. Safety power supply system for movable electric machines
US9683439B2 (en) 2013-10-29 2017-06-20 Halliburton Energy Services, Inc. Safety cable for downhole communications

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