GB190116419A - Improvements in Frogs, or Points, and Crossings, to be used in connection with the Conductors of Electric Tramways or Railways.
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Improvements in Frogs, or Points, and Crossings, to be used in connection with the Conductors of Electric Tramways or Railways.
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Hugh Godfrey Nicholson
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16,419. Nicholson, H. G. Aug. 15. Electric railways and tramways with overhead conductors. Conductors. - Frogs, points, and crossings are made as plates with projections on the underside leaving space for the trolley wheels to pass. The projections are sloped off at their ends to guide the wheel at D, E, F and Q, R, S, T. On the crossing- plate the central projection H may be provided.
GB190116419D1901-08-151901-08-15Improvements in Frogs, or Points, and Crossings, to be used in connection with the Conductors of Electric Tramways or Railways.
ExpiredGB190116419A
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