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
Links
Landscapes
- 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.
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)
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 |
-
1901
- 1901-03-16 GB GB190105562D patent/GB190105562A/en not_active Expired
Cited By (2)
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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