page_title: Trolley pole
hierarchical_section_title: Trolley pole
caption_attribution_description: Deutsch: Stromabnehmer an einem Obus ÖAF Gräf &amp; Stift NGE 152 M17 English: Pantograph of an ÖAF Gräf &amp; Stift NGE 152 M17 trolleybus Suomi: ÖAF Gräf &amp; Stift NGE 152 M17 -johdinauton virroitin
context_page_description: 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. It is a type of current collector. The use of overhead wire in a system of current collection is reputed to be the 1880 invention of Frank J. Sprague, but the first working trolley pole was developed and demonstrated by Charles Van Depoele, in autumn 1885.
context_section_description: 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. It is a type of current collector. The use of overhead wire in a system of current collection is reputed to be the 1880 invention of Frank J. Sprague, but the first working trolley pole was developed and demonstrated by Charles Van Depoele, in autumn 1885.
caption: A trolleybus with a pair of trolley poles on the roof
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