The little gold mine. Conklin's handy manual of the mechanical arts and house plans .. (1889)
Conklin, [George W.] [from old catalog] · Chicago, Laird & Lee · leaf 329
is a view of a commonform of drawing die for deep work.They are used for making caps, cart-ridge cases, etc. It consists of around disk of steel about 7/^ deepwith a hole the size of shell required bored in it. This hole is well rounded off at the corner, and counter-Dored from the bottom with a… … Fig. 4.
Industrial arts · Workshop recipes · Architectural drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
