Guideo carriage assembly for photodrafting equipment

Details Guideo carriage assembly for photodrafting equipment Guideo carriage assembly for photodrafting equipment

1977-09-26

1980-07-08

Lechert, Jr., Stephen J.

Illumination

Work-table lighting system

362 97, 354 77, A61G 1300

Patent

active

042120497

ABSTRACT:
A guided carriage assembly for photodrafting equipment comprises a carriage and guide means for the carriage wherein the guide means comprises three parallel rails presenting accurately ground horizontally extending straight edges, one of the outermost straight edges lying in a horizontal plane and the other outermost edge and the intermediate edge being inclined to the horizontal in opposite directions, and the carriage assembly comprises two pairs of aligned rollers bearing on the inclined edges and a single roller bearing on the horizontal edge. The arrangement is such that the precision of movement of the carriage is governed substantially entirely by the straightness of the edges. A preferred embodiment comprises two such assemblies one mounted atop the other with the rails of the one extending orthogonally to those of the other whereby to provide an X-Y table.

REFERENCES:
patent: 2877556 (1959-03-01), Hulen

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