Trolley pole facts for kids

Kids Encyclopedia Facts
Trolley Wheel
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 system of current collection is reputed to be the 1880 invention of Frank J. Sprague.

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Trolley pole Facts for Kids. Kiddle Encyclopedia.