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 181
ether, while ramming the core,are iron or soft-steel forgings and can be fitted by the metal-pattern 162 PATTERN MAKING maker. In ramming the core, the sides are clamped together andplaced on the bottom. Core sand is rammed to the underside of the lower draw piece,and is then struck offwith the… … Fig. 282, Elevation of Guide-Ring Core Looking fromRing Center Outward
Patternmaking
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from The gentlemens or builders companion : containing variety of usefull designs for doors, gateways, peers, pavilions, temples, chimney-pieces, slab tables, pier glasses, or tabernacle frames, ceiling peices [sic] &c. (1739)](https://img.insideoutlibrary.com/img/200/ia-gentlemensorbuil00jone-22-9.webp)
