Society of Glass Technology · [Sheffield] · leaf 518
n, may be provided in the inner faces of theslabs to allow circulationof hot air through thepassages, c, and the kilnchamber. The joint with the blocks, /, is formed by a rib, d, andgroove, c, and recesses, m, are provided in the upper and loweredges of the slabs to receive strips, I, of fireclay… … 47. Tank Furnace for Drawing Sheet Glass. Henry Douchamp (U.S.A. Pat., March 25th, 1919, No. 1298474. FiledSeptember 20th, 1916. No. 121222).—The specification describesa tank furnace construction forming part of an apparatus by whichcylinders of sheet glass are drawn directly from the metal in…
Glass
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