Ornamental turning : a work of practical instruction in the above art (1880)
Evans, J. H. (John Henry), lathe-maker · London : J.H. Evans · leaf 82
ich are, in many cases, insufficient for the depth of work. It will be seen that the rod which holds the tool may be increased in length, or reduced if less extension is necessary. For such work it is a most important addition, and is now largely used. It was invented and introduced by the author.… … to height of centre. The edge may be sharp, round, or flat, to suit the material to be operated upon, and by grinding the top face, a more or less acute cutting angle is obtained. This tool, although appropriated to metal turning as a rule, may be applied to roughing-over ivory of uneven surface,…
Turning (Lathe work)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.