Pattern making; a practical treatise for the pattern maker on wood-working and wood turning, tools and equipment, construction of simple and complicated patterns, modern molding machines and molding practice (1921)
Ritchey, James, Monroe, Walter W. (Walter William), b. 1869 · Chicago, American technical society · leaf 144
connected together by a strong center bar, whichis fitted, glued, and screwed into each, serving not only to strengthenthe pattern, but also to hold the connecting dowel pins. When thetwo halves of the pattern are clamped together, it serves also as asecure means of centering in the lathe. PATTERN…
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
