ard, B B, is employed. It is simply a board ranging in thickness from seven eighths inch upwards, according to its length. One of the edges is cut to the conformation of the required core; and all but about three sixteenths of an inch of the thickness of this edge is beveled off at an angle of… … sented by C. The core boxes, being made in halves and loose tion of the arrow, as shown in Fig. 85, in which A repre- at two of the opposite corners, can be drawn away from the sents the tube, B the straw rope, C the loam coating, and D cores, C, leaving them standing, just as they were made, on…
Patents · Improved · Iron · Boiler · Core · Scientific American · Feet · Pattern maker · Spontaneous combustion · Carbonic acid · American institute · Horse power · Side bars · Core box · Feet long · Professor huxley
Internet Archive · Public domain (published before 1931). Free to use for anything.
