. American engineer and railroad journal . as the officeof the general superintendent of motive power, shall keep intouch with the improvements thit are made in machine toolsfrom time to time, by carefully noting the catalogs and descrip-tive matter received from the machine tool builders, and by per-sonal visits to other shops and manufacturing plants, makingnotes of machines for special work, and new attachments on ma-chines with which the motive power department is familiar, forfuture reference. The Mineral Production in the United States now ex-ceeds two billion dollars per annum, and it c
. American engineer and railroad journal . as the officeof the general superintendent of motive power, shall keep intouch with the improvements thit are made in machine toolsfrom time to time, by carefully noting the catalogs and descrip-tive matter received from the machine tool builders, and by per-sonal visits to other shops and manufacturing plants, makingnotes of machines for special work, and new attachments on ma-chines with which the motive power department is familiar, forfuture reference. The Mineral Production in the United States now ex-ceeds two billion dollars per annum, and it contributes morethan 65 per cent, to the total freight traffic of the country. Wenow produce nearly 500,000,000 tons of coal per annum, or 40per cent, of the worlds product. We also produce 58 per cent,of the worlds iron; 22 per cent, of the worlds gold; 60 per the worlds copper. To Find the Weight of Castings multiply the cubic inches ; for iron. for steel and for brass. 130 AMERICAN ENGINEER AND RAILROAD FIG. —DIES AND FORMER FOR BAGGAGE CAR DOOR KNOB. FIG. 6.—DIES AND FORMER FOR CASTLE NUT. FORGING AT THE COLLINWOOD SHOPS.; Lake Shore & Michigan Southern Railway. Truck Hanger.—The dies and formers for forging a truckhanger for the standard Lake Shore & Michigan Southern Rail-way four-wheel passenger truck are shown in Figs, i, 2 and hanger is made of two pieces of wrought iron 1/$ by 3 size. These pieces are heated and bosses are forged on theends which form the fork, while they are separate, by the diesshown in Fig. 1. The two pieces are then clamped together,heated to a welding heat and the slotted end is formed by usingthe dies shown in Fig. 2; the two pieces are welded together atthis end at the same time by squeezing them tight between thejaws with the side motion of the machine. The jaw, or forkedend, is opened with a common wedge in a bulldozer. The forked end of the hanger is then reheated and brought toa welding
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
