Importance

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Abstract

A railway reference machine is provided for surveying and aligning a railroad track, and includes a collapsible projector assembly having a pusher buggy assembly, and a lifting device. A plurality of projectors is mounted to a projector cart. The pusher buggy assembly has extendable and retractable linkage sections such that the linkage sections are stackable and nestable within a space defined by the lifting device and the projector cart. At one end, the pusher buggy assembly is connected to the projector cart and at an opposite end is connected to the lifting device such that the projector cart pivots upwardly about a pivot point to rest the projector assembly in a space defined by a chassis being dimensional for supporting the reference machine, and pivots downwardly about the pivot point to lower the projector assembly on the railroad track.

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First Claim