Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 16
tmospheric pressure from without might cause its sides to collapse, and thus effect thedestruction of the boiler. AIR-PUMP. An apparatus to extract or exhaust the air from a vessel, to produce a vacuum. Fig. 5 is a sectional view of the common form of the Air-pump. R is a bell-shaped glass ves-sel,… … 12 AIR-PUMP: rubbed upon the edge of the glass vessel, commonly called the receiver, and then the rim placed, by rkind of circular sliding motion, upon the brass plate, no air can pass in or out of the receiver, betweenits edge and the plate. Through the centre of the brass plate there is drilled…
Mechanical engineering
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