A treatise on the origin, progressive improvement, and present state of the manufacture of porcelain and glass (1832)
[Porter, George Richardson], 1792-1852. [from old catalog] · Philadelphia, Carey & Lea · leaf 161
, as the mixture of any of these foreignmatters would infallibly spoil the beauty of the plate. Thesedone, the cuvette is wound up to a sufficient height by a crane;air1 then, by means of another simple piece of mechanism, isswung over the upper end of the casting table; and beingthrown into an… … The glass is prevented from running off the sides of the tableby ribs of metal, one of which is placed along the whole lengthof each side, their depth being the exact measure which it isdesired to give to the thickness of the glass. A similar rib, at-tached to a cross piece, is temporarily held,…
Porcelain · Glass manufacture
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