ently larger than the finished houses, ships, engines, bridges, or railroads. It is known starting or impelling the car, which apparatus consists, gen- erally, of springs, a cord or chain, a conical spirally-grooved as Ball’s patent jackscrew, and is manufactured by Mr. size to permit the weld to… … The scarfs should be placed to well overlap each other, and line again, so that the car wheels will be restored to their Fig. 1. should receive light and quickly succecding blows at first, proper position. —>+———— and heavier ones afterward. The screw, as will be seen by reference to the engraving,…
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