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Updated: July 5, 2025
If we tie up an empty or collapsed bladder, and place it in a vessel over an air-pump, we may see, as we withdraw the air from the vessel, and so diminish its pressure, the bladder gradually expand and swell as it does under inflation. The cohesive power of water is beautifully illustrated.
He said aloud of motor-cars, and specially of steam ones, all the things which I had read in the faces of superior coachmen. Then he pulled slantwise across me. There was a vociferous steam air-pump attached to that car which could be applied at pleasure.... The cart was removed about a bowshot's length in seven and a quarter seconds, to the accompaniment of parcels clattering.
The brass mechanism at the end of the next table is the perfected air-pump of Robert Boyle, Newton's contemporary, one of the founders of the Royal Society and one of the most acute scientific minds of any time. And here between these two mementos is a higher apparatus, with crank and wheel and a large glass bulb that make it conspicuous. This is the electrical machine of Joseph Priestley.
When his son was born, nine years after the great struggle had passed into history, Caleb, the soldier, was still using charcoal for fuel and blowing his cupola fire with the wooden air-pump whose staves had been hooped together by the hands of his father, and whose motive power was a huge overshot wheel swinging rhythmically below the stone dam in the creek.
Out into the river they sailed, Eva at the wheel, while Locke busied himself over the sputtering engine. Soon they arrived at a spot which was suitable for the test of the suit. Locke had brought along the full equipment, and, while Eva took charge of the air-pump, Locke donned the diving-suit. Soon all was ready and Locke descended over the side, after carefully instructing Eva in each detail.
The fine stream of kerosene which, under pressure from the air-pump, is impinged against the perforated copper cup, heated to redness by burning alcohol, and is thus vaporized first passes through several convolutions of pipe within the burner, and then issues from a hole so fine that some people would not call it a hole at all but an orifice or something like that.
Henderson, and Jack and Mark told what they knew of the explosion. "I was working over an extra air-pump that I wish to take along with us," stated Mr. Roumann, "when I was startled by seeing two strangers standing near my work bench. One I recognized as the insane machinist who was here before. The other "
The facility, with which each muscle changes from one associated tribe to another, and that either backwards or forwards, is well observable in the muscles of the arm in moving the windlass of an air-pump; and the slowness of those muscular movements, that have not been associated by habit, may be experienced by any one, who shall attempt to saw the air quick perpendicularly with one hand, and horizontally with the other at the same time.
Before me the pale serpent-girdled section of the sun sank and sank, and the advancing shadow swept to seize the sphere before I could reach it. I was two miles away, a hundred leaps or more, and the air about me was thinning out as it thins under an air-pump, and the cold was gripping at my joints. But had I died, I should have died leaping.
On one side of the principal bookcase was an electrical machine, and on the other an air-pump; while a rusty sword and a pair of ancient gauntlets served as links to connect the warlike past with the pacific present.
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