owned, sharply-crested grinders fitted . for grazing feet below the surface. The force of Egyptian work- the real stone. After the incision the cleaver inserted upon the harder kind of herbage. , The narrow muz- men, as directed and coached by Messrs. Granger and zle of the head indicated that the… … ished is made of cast iron THE ROOM IN WHICH THE CULLINAN DIAMOND IS BEING POLISHED, SHOWING THE STEEL DISK IN ed dust, shellac was pour- and steel, and revolves at ed, and not until the speci- THE FOREGROUND. a, rate of 2,400 revolutions men was hardened, could per minute. The. disk will turn…
Patents · Machine · Drum · Wire · Supplement · American supplement · Scientific American · Reinforced concrete · Model commission · Patent office · Years ago · Short arm · Iron wire · Buy machinery · Wireless telegraph
Internet Archive · Public domain (published before 1931). Free to use for anything.
