Manual of recommended practice for railway engineering and maintenance of way (1905)
American Railway Engineering and Maintenance-of-Way Association · Chicago, Ill. : The Association · leaf 77
e, other than rounding off the corners bycurves of ^-in. radius, Fig 3. MOLDS. 30. The molds should be made of brass, bronze or some eqvially non-corrodible material, having sufficient metal in the sides to prevent spread-ing during molding. 31. Gang molds, which permit molding a number of… … FIG. 4.—DETAILS FOR GANG MOLD. 32. The molds should be wiped with an oily cloth before using. MIXING. 33. .Ml proportions should be stated by weight; the quantity ofwater to be used should be stated as a percentage of the dry material. 34. The metric system is recommended because of the…
Railroad engineering · Railroads
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