GB190103636A - Improvements in Devices for connecting Electrical Circuits to Earth, in Case of Emergency, Chiefly for Use with Overhead Wires. - Google Patents

Improvements in Devices for connecting Electrical Circuits to Earth, in Case of Emergency, Chiefly for Use with Overhead Wires.

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Publication number
GB190103636A
GB190103636A GB190103636DA GB190103636A GB 190103636 A GB190103636 A GB 190103636A GB 190103636D A GB190103636D A GB 190103636DA GB 190103636 A GB190103636 A GB 190103636A
Authority
GB
United Kingdom
Prior art keywords
earth
plate
emergency
case
wires
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
Edward Massey Hollingsworth
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 GB190103636A publication Critical patent/GB190103636A/en
Expired legal-status Critical Current

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  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

3636. Hollingsworth, E. M. Feb. 20. Electric railways and tramways with safety appliances for use in connection with overhead conductors. Conductors.-To enable any person to connect to earth &c. any charged wires in case of emergency, especially trolley wires on electric tramways, encased switches, operated by breaking a plate of glass or other fragile material, are provided at suitable points. Fig. 1 shows a switch b adapted to connect the supply and earth wires d, e, enclosed in a cage a and prevented from closing by a connection! to a glass plate g. In a modification, a weight attached to one lead is suspended by a cord attached to the plate and falls on to a contact connected to the other lead when the plate is broken.
GB190103636D 1901-02-20 1901-02-20 Improvements in Devices for connecting Electrical Circuits to Earth, in Case of Emergency, Chiefly for Use with Overhead Wires. Expired GB190103636A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190103636T 1901-02-20

Publications (1)

Publication Number Publication Date
GB190103636A true GB190103636A (en) 1901-09-28

Family

ID=32420929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB190103636D Expired GB190103636A (en) 1901-02-20 1901-02-20 Improvements in Devices for connecting Electrical Circuits to Earth, in Case of Emergency, Chiefly for Use with Overhead Wires.

Country Status (1)

Country Link
GB (1) GB190103636A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077527A (en) * 1961-06-21 1963-02-12 S & C Electric Co Circuit interrupter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3077527A (en) * 1961-06-21 1963-02-12 S & C Electric Co Circuit interrupter

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