. The Street railway journal . bridge, which is shown in Figs. 1and 2. This bridge is carefully fitted to the rail and is se- 206 STREET RAILWAY JOURNAL. [Vol. XV. No. 4. curely held in place by bolts. Long, tapering approachesare furnished at both ends, so that cars have no difficulty inpassing over without interfering in any way with the jointunderneath. The mould proper is of a new design, andconsists of three main parts. These are shown upon theground in Fig. 1, and attached m place to the joint in The parts can be placed in position around the jointready for the pouring in a very f
. The Street railway journal . bridge, which is shown in Figs. 1and 2. This bridge is carefully fitted to the rail and is se- 206 STREET RAILWAY JOURNAL. [Vol. XV. No. 4. curely held in place by bolts. Long, tapering approachesare furnished at both ends, so that cars have no difficulty inpassing over without interfering in any way with the jointunderneath. The mould proper is of a new design, andconsists of three main parts. These are shown upon theground in Fig. 1, and attached m place to the joint in The parts can be placed in position around the jointready for the pouring in a very few minutes. They areheld together by bolts, and in addition a small clamp isused for supporting the under piece. Before the moulds are placed in position the ends of FIG. 2.—JOINT READY FOR CASTING the rails are carefully cleaned and polished by means of asand blast, which is also of recent design. This blast isoperated by a gas engine, and with it the rails can be bur-nished and made absolutely clean in about a minute. The. FIG. 3.—CUPOLA IN OPERATION very best grade of sand obtainable is used with this ma-chine. This blast opens the pores of the steel at the endsof the rails, thus giving a better opportunity for the weld-ing or fusion of the cast iron and steel. The cupola for heating the metal is illustrated in , and the method of pouring is shown in Fig. 4. Thecupola contains a number of improvements, and is givingexcellent satisfaction. The process of pouring is very sim-ple, although quite ingenious. The ladle or pot for hold-ing the molten metal is attached to two long rods, one ofwhich has two branches at its end, as shown in Fig. rods are carried by means of two wooden poles, hav-ing at their centers an eye or staple, through which therods are inserted. Five or six men arc required to carrythe ladle from the cupola to the joint to be welded, andfour men are employed in the actual process of pouring;two to support the ladle, one to tip it, and the other t
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
