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Trolley pole

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File:Trolley Wheel.jpg
Trolley Wheel on TCRT 1300

A trolley pole is a tapered cylindrical pole of wood or metal, used to transfer electricity from a "live" overhead wire to the control and propulsion equipment of a tram or trolley bus. The use of overhead wire in a railway electrification system is said to be the 1880 invention of Frank J. Sprague.[1]

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  1. ↑ Dr. Romin Koebel (2005). "Boston Transit Milestones". MIT Open Courseware. Archived from the original on 2006-09-20. Retrieved 2006-10-24.


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