ground frame

plural ground frames · alternative groundframe

1. rail transportA lever frame controlling the operation of points and/or signals which is installed at ground level.

   Before long, this box will be installed nearer Grosmont (NYM) level crossing to permit control of the crossing gates (presently hand-worked) and to replace the eight-lever ground frame which currently operates the pointwork.

   1979 August, Michael Harris, “A line for all reasons: the North Yorkshire Moors Railway”, in Railway World, page 412

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   At the western [actually eastern] end of the line, operation of the ground frames at Grosmont and Whitby for NYMR [North Yorkshire Moors Railway] services is time-consuming: if we could speed that up, we'd improve track occupancy. Motorising points is quite easy to do.

   2019 October, James Abbot, “Esk Valley revival”, in Modern Railways, page 78