Origin of compressed air
Examples from the Web for compressed air
The hoisting was done by a small Lidgerwood compressed-air hoister, and set up on an overhead platform across the tunnel.
In such places, low, compressed-air locomotives were sometimes used; but these were very expensive.Every-day Science: Volume VI. The Conquest of Nature|Henry Smith Williams
Her motive power consisted of compressed-air engines of eighty horsepower.
Our compressed-air reservoir was a soda-water fountain tank.
Prior to 1893 Mr. Hargraves (of cellular kite fame) studied the question of compressed-air motors for model flying machines.The Theory and Practice of Model Aeroplaning|V. E. Johnson