Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . into the belly of the mould, by pressing with his foot upon the first treadle,he brings up the neck-piece, then forces the glass into contact with all parts of the mould by a ] ow-erful blast, and finishes the bottle by working the second treadle, which forces the pestle against thebottom. On the removal of the pipe, the rim of the neck is all that remains to be perfected. Champagne bottles require to be made more than usually strong in consequence of the pressureexerted by the carboni
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . into the belly of the mould, by pressing with his foot upon the first treadle,he brings up the neck-piece, then forces the glass into contact with all parts of the mould by a ] ow-erful blast, and finishes the bottle by working the second treadle, which forces the pestle against thebottom. On the removal of the pipe, the rim of the neck is all that remains to be perfected. Champagne bottles require to be made more than usually strong in consequence of the pressureexerted by the carbonic acid inclosed within them, and they are particularly liable to fracture duringthe bottle-fermentation of the wine. Yet they will often withstand a pressure of 40 atmospheresand upward (= 600 lbs. on the square inch). The Manufacture of Mirrors.—Plate-glass has to undergo three operations before it is first is smoothing. The rough plates are fastened with plaster upon a stone or cast-iron means of a long beam of iron suspended from the ceiling and moved circularly, masses of wood. 2191.
Size: 1624px × 1538px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
