The machinist and tool maker's instructor, containing an easy method of calculating and laying out difficult work in the machine shop .. (1896)
Genung, Edward. [from old catalog] · New York [Press of J. B. Savage, Cleveland] · leaf 191
, however, you will have 186 THE MACHINIST AND TOOL MAKERS INSTRUCTOR. to have one of these pieces, shown at B, for each size mill.This piece is reamed parallel, as shown by the dotted lines,and turned taper to suit the body of chuck nearly three-fourthsof its length, and from there to the front… … THE MACHINIST AND TOOL, MAKEEs INSTRUCTOR. 187 *4 from the end, each alternately starting from oppositeends, and in this manner the shell will close parallel on thework. The body of the chuck A and also the shell B shouldbe made of tool steel. Figure 52 represents a special chuck that I made…
Machinery
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