dges, or railroads. It is known The scarf should be sufficiently larger than the finished starting or impelling the car, which apparatus consists, gen- as Ball's patent jackscrew, and is manufactured by Mr. erally, of springs, a oord or chain, a conical spirally grooved size to permit the weld to… … a piece of wood made ragged by having been hammered. at once drop upon the rails and operate to raise the truck in 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. Pig. -3. should receive light and quickly succeeding…
Patents · Patented · Iron · Machine · Images · Improved · Scientific American · Sun · Washing machine · Tubular screw · Wrought iron · Car wheels · Wire cloth · Water wheel · Sunward side · Takes place · Steam pipes
Internet Archive · Public domain (published before 1931). Free to use for anything.
