Trolley Pole

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 the electric traction motors 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, while the first working trolley pole was developed and demonstrated by Charles Van Depoele, in autumn 1885.

Read more about Trolley PoleOrigin of The Term, Description of The Device, Single- and Double-pole Usage, Decline in Usage On Railways

Other articles related to "trolley pole, trolley poles, trolley, trolleys":

Trolley Pole - Decline in Usage On Railways
... All trolleybuses use trolley poles, and thus trolley poles remain in use worldwide, wherever trolleybuses are in operation (currently, some 315 cities), and several ... However, on most railway vehicles using overhead wire, the trolley pole has given way to the bow collector or, later, the pantograph, a folding metal device that presses a wide contact ... While more complex than the trolley pole, the pantograph has the advantage of being almost free from dewiring, being more stable at high speed, and being easier to raise and ...
Tram - Etymology and Terminology
... in English North Americans prefer trolley, trolleycar or streetcar ... When electrification came, Americans began to speak of trolleycars or later, trolleys, believed to derive from the troller, a four-wheeled device that was dragged along dual ... The trolley pole, which supplanted the troller early on, is fitted to the top of the car and is spring-loaded in order to keep the trolley wheel or alternately, a grooved lubricated "skate", at the top of ...

Famous quotes containing the word pole:

    I wouldn’t take the Pope too seriously. He’s a Pole first, a pope second, and maybe a Christian third.
    Muriel Spark (b. 1918)