Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 790
this outer ring a platform of timber is laid, resting upon and fastened to the arms kk. the beltholes being shown in the figure; upon this platform the rails of the road are placed i ti. Fig. S6SJ TURN-TABLE. 783 ehowa the timber, the upper side of which is level with tlie top of tlie i iitcr ring… … We have said that the top of tl e turn-table is covered with timber, on which the rails forming therailway is laid; in many cases the top is formed of cast-iron, the rails being raised a little above thesurface of the cast-iron plate.
Mechanical engineering · Mechanics · Engineering
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