What is "air-pump"

Usage examples of "air-pump".

For this purpose I unrigged the air-pump apparatus, and almost, but not quite, closed the valve, leaving an aperture about the twentieth part of an inch in diameter.

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.

The Relative Proportion of the Heating Surfaces in the Elements of the Multiple Evaporator and their Actual Dimensions -- The Pressure Exerted by Currents of Steam and Gas upon Floating Drops of Water -- The Motion of Floating Drops of Water upon which Press Currents of Steam -- The Splashing of Evaporating Liquids -- The Diameter of Pipes for Steam, Alcohol, Vapour and Air -- The Diameter of Water Pipes -- The Loss of Heat, from Apparatus and Pipes to the Surrounding Air, and Means for Preventing the Loss -- Condensers -- Heating Liquids by Means of Steam -- The Cooling of Liquids -- The Volumes to be Exhausted from Condensers by the Air-pumps -- A Few Remarks on Air-pumps and the Vacua they Produce -- The Volumetric Efficiency of Air-pumps -- The Volumes of Air which must be Exhausted from a Vessel in order to Reduce its Original Pressure to a Certain Lower Pressure -- Index.

I work the air-pump, and raise the organ by an exhausted receiver.

He also subsequently invented the D slide valve, or at least greatly improved it, while he added to the power of the air-pump, and gave a new arrangement to the other parts, with a view to the simplification of the powers of the engine.

The bedsprings and old windows, the girders and steam engines from ancient locomotives, the air-pumps and fans, the pulleys and belts and shattered powerlooms were falling like an optical illusion into an alternative configuration.