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 268
nd the bottompart or core is knocked out of the casting by the edge; lastly, the two sides are pulled asunder bytheir handles, and the casting is removed from the one in which it happens to stick fast; but it requirescautious handling not to break it. The face of the mould is slightly coated with… … Most of the works made in the veiy useful material, pewter, are cast in gun-metal moulds, which re-quire much skill in their construction ; thus, a pewter tankard, with a lunged cover and spout, consistsof six pieces, every one of which requires a different mould. Thus:— 1. The body has a mould in…
Mechanical engineering · Mechanics · Engineering
Internet Archive · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-1057-474.webp)
