Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 186
y the hand-tools. A plug of copper isscrewed into the brass guns to be perforated for the touch-hole, copper being less injured by repeated discharges thanthe alloy of 9 parts copper and 1 part tin, used for the general substance of the gun; the curved bit smooths off the end ofthe plug. BORING… … The larger application of this principle is shown in Fig. 568, in which a cast-iron cutter-block is keyedfast upon a cylindrical bar; the block has four, six, or more grooves in its periphery. Sometimes thework is done with only one cutter, and should the bar vibrate, the remainder of the grooves…
Mechanical engineering
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
