Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 275
and the side A of the mould is then well dusted; alayer of sand is now tin-own on, and rammed tolerably firm to form an annular core, which is madeexactly level with the inner margin b of the pattern, and the core is well dusted; lastly, the side B isput on and rammed as usual To extract the model,… … The entire mould is now turned over; A is first removed, then the remaining half pattern a, a, whichmust be touched very tenderly or it will break down the core; and the runner (which divides in twobranches around the core) is also scooped out in the side A, wliich is dusted with flour and…
Mechanical engineering · Mechanics · Engineering
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