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Frank George Evans
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Individual
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Current-Collector Devices For Electrically Propelled Vehicles
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Abstract
3174. Evans, F. G. Feb. 14. Electric railways and tramways with safety appliances for cutting out overhead conductors should the conductor break, which are inoperative when the supply is switched off. Conductors.-The Figure shows the arrangement. In each section pillar is placed a pair of electromagnets 1, 2 connected to earth at 12, 13, and to the overhead conductor 5, 6 through wires 3, 4. The feeder 9 is connected to the sections through cut-outs 10, 11 and conductors 7, 8. Pivoted in front of the magnets are armatures 26, 27 carrying contacts 22, 23 adapted to connect either of the feeders 7, 8 to earth through the contacts 28, 16 or 29, 17. The armature levers are provided with projections 24, 25, which interlock and prevent the earth connection when the current is cut off from both electromagnets simultaneously. Weights 30, 31 are fitted on the levers for adjusting them.
Improved Means Applicable for Use with Overhead Electric Conductors for the Prevention of Danger in the Case of Telephone, Telegraph or other Wires Falling Across them.