International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 620
a much smaller one is bored forthe balance of the distance through which the threadis to pass. A wrought or /////r/zri/washer cut fromsheet iron should be i)laced under the head ofeach lag-screw. The ordinary form of lag-screw isin Fig. 615. Fig. Gl.j. shown RAILROAD STRUCTURES. 1205 1774.… … dimensions are given in Table 50. The solid washers areplaced under the head and the slotted washers, or those TABLE 50. DETAILS OF CAST-IRON TVASHERS. Dimensions in Inches. Kind, Fig. 616. Diameter Diameter Diameter Thickness. of Back. of Face. of Hole. A 2f If 1 1 3 B 3 2i 1 1 2 c 3 If 1 f D 3 2…
Railroad engineering
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