Trolley pole

device allowing a tram or bus to collect current from overhead wires

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]

Trolley Wheel on TCRT 1300


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