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 31
itflKll ANIMAL MATTER USED IN THE ARlS. 27 The round plate of shell is first placed centrally over the edge of the ring, as in Fig. 39 ; it is slightlysqueezed with the small round-edged block g, and the entire press is then lowered into the boiling water;in one quarter, or half an hour, it is…
Mechanical engineering
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