Pneumatic Jack
A pneumatic jack is a hydraulic jack that is actuated by compressed air - for example, air from a compressor - instead of human work. This eliminates the need for the user to actuate the hydraulic mechanism, saving effort and potentially increasing speed. Sometimes, such jacks are also able to be operated by the normal hydraulic actuation method, thereby retaining functionality, even if a source of compressed air is not available.
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Famous quotes containing the words pneumatic and/or jack:
“Uncorseted, her friendly bust
Gives promise of pneumatic bliss.”
—T.S. (Thomas Stearns)
“Just we two
Darby and Joan, who used to be Jack and Jill.”
—Oscar Hammerstein II (1895–1960)