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 270
rfectly adapted. The moulding-sand cannot, however, be used without external support, and which is given by shal-low iron frames, without tops or bottoms, called flasks, represented in Figs. 807 and 808. The bottompart, 4, 5, is supposed to have been rammed full of sand, and to stand upon a flat… … The top part of the flask 2, 3, is shown still empty, and in the act of being attached to 4, 5 by itspins, which enter corresponding holes in the latter, easily but without shake: 2, S is also rammed fullof sand, and covered with a top board, 1, not represented to avoid conrision. The mould is…
Mechanical engineering · Mechanics · Engineering
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