Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 653
uch lightparticles as may possibly reach the top of the diaphragm, the nature of the second part of the in-vention consists in arranging an air-chamber within the diaphragm at the top of the stack, whichchamber is ventilated or exhausted by means of tubes connecting that chamber with the air-flue…
Mechanical engineering
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