Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 654
I- • that the -park chamber J i- exhausted of its air. in part, bj I • quently between every pulsation there will be a dr well a- through the aperture •; of the diaphragm <». This dra.ad- the -park chamber.I will have the effect to create a draught upw: a the chime hich the. draught of the…
Mechanical engineering
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