ly expensive. To meet these requirements, the offering solutions of problems whose complexity baffied The merits of the apparatus described earned for it Pan-American Acetylene Company, of Buffalo, N. Y., the only gold medal for acetylene machines at the have devised an apparatus in which the… … sure of the fluid. When the pressure of the fluid pass- ing through the ports in the upper chamber exceeds that of the air in the lower chamber, the diaphragm is Fig. 2._SECTION OF THE GENERATOR. Fig. 3—THE “NORTHLIGHT” ACETYLENE-GAS depressed, thus causing the spindle to close the double…
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