. American engineer and railroad journal . on the frame back has the correct taper, so that when thehammer strikes it, it will be driven into place. The brace C ismade of two pieces of 4 in. x y% in. iron bolted fast to the backand the holes are spaced the correct distance to allow the braceto slide into place. When the brace is put in place ready forwelding it will stand away some distance from the limb; as arule we put a block of soft wood between the brace and the limbwith the grain running the right way so that when the bracebegins to draw the block will split, allowing the brace to comeba
. American engineer and railroad journal . on the frame back has the correct taper, so that when thehammer strikes it, it will be driven into place. The brace C ismade of two pieces of 4 in. x y% in. iron bolted fast to the backand the holes are spaced the correct distance to allow the braceto slide into place. When the brace is put in place ready forwelding it will stand away some distance from the limb; as arule we put a block of soft wood between the brace and the limbwith the grain running the right way so that when the bracebegins to draw the block will split, allowing the brace to comeback into position. Fig. 5 shows the lower rail pieces in place. They should bewelded first at A and S, and then at C and D. By this methodyou reduce the strains that on the legs and a few blows of 414 AMERICAN ENGINEER AND RAILROAD JOURNAL October. 1911. the hammer on the braces after the weld is made will furtherremove them. The proper place to strike the braces is indicatedby the arrow heads on the sketch. The front end as used on. some of our heavier engines is made in one piece under the ham-mer and is shown in Fig. 6. This tvpe of front section is fin-ished m the machine shop and drilled before it is welded to theframe. The type of front limb that is ordinarily used is shown inFig. 7, and A shows the part ready to weld in place. Weld asmall stub on the frame back and then weld on the front making the offset frame shown in Fig. 8, the back is madein two pieces, and is then welded at A, after which the work FIG. 4.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering
