Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 284
under makes frequent use of flasks which divide in three or four parts; this is done inmany cases simply to increase the depth of the contained space ; in which case, when wooden flaskswere employed, they admitted of being temporarily fixed together by dogs, or large iron staples, drivena little… … A casting, such as Fig. 834, which represents the top of a sliding-rest for a lathe, might be mouldedin a very deep two-part flask, if the parting were made upon the dotted line a a; but there would bevery great risk of tearing down the mould in drawing out the pattern ; and from the depth, there…
Mechanical engineering
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