GB190105562A - Improvements in and relating to Devices for Cutting out Broken or Short-circuited Sections of Trolley-wires used in connection with Electric Traction Systems. - Google Patents

Improvements in and relating to Devices for Cutting out Broken or Short-circuited Sections of Trolley-wires used in connection with Electric Traction Systems.

Info

Publication number
GB190105562A
GB190105562A GB190105562DA GB190105562A GB 190105562 A GB190105562 A GB 190105562A GB 190105562D A GB190105562D A GB 190105562DA GB 190105562 A GB190105562 A GB 190105562A
Authority
GB
United Kingdom
Prior art keywords
connection
trolley
wires
relating
short
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
John Wylie Donaldson
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 GB190105562A publication Critical patent/GB190105562A/en
Expired legal-status Critical Current

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  • Emergency Lowering Means (AREA)
  • Push-Button Switches (AREA)

Abstract

5562. Donaldson, J. W. March 16. Electric railways and tramways with safety switches for use in connection with conductors. Conductors switches.-To enable any person to connect to earth or return any charged wires in case of emergency, such as trolley wires on electric tram ways, encased switches operated by breaking a plate of glass are provided at suitable points. Fig. 1 shows a switch n adapted to connect the supply and return wires h, i enclosed in a case a and prevented from closing by a connection o to a glass plate c bearing the coloured button r. In another form, the displacement of a coloured disc inside the glass releases a detent from the pulley from which the weighted contact n is suspended, or a spring may replace the weight. The suspended part is steadied and guided by the fork t embracing an insulating-plate m between the terminals.
GB190105562D 1901-03-16 1901-03-16 Improvements in and relating to Devices for Cutting out Broken or Short-circuited Sections of Trolley-wires used in connection with Electric Traction Systems. Expired GB190105562A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190105562T 1901-03-16

Publications (1)

Publication Number Publication Date
GB190105562A true GB190105562A (en) 1902-02-27

Family

ID=32421902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190105562D Expired GB190105562A (en) 1901-03-16 1901-03-16 Improvements in and relating to Devices for Cutting out Broken or Short-circuited Sections of Trolley-wires used in connection with Electric Traction Systems.

Country Status (1)

Country Link
GB (1) GB190105562A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701282A (en) * 1951-06-25 1955-02-01 Cleveland R Berry Burglar alarm
US3050272A (en) * 1960-04-22 1962-08-21 Aero & Engineering Merseyside Devices responsive to fracture of a frangible member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701282A (en) * 1951-06-25 1955-02-01 Cleveland R Berry Burglar alarm
US3050272A (en) * 1960-04-22 1962-08-21 Aero & Engineering Merseyside Devices responsive to fracture of a frangible member

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