1895 23 May The area of the water piston power.]
1899 7 Dec. 3/5 These solid slabs of metal are forced by..‘piston-power through a series of holes.’
1991 Nov. 34/1 A pair of Merlins with ‘handed’ (one going round each way) propellers, eliminating most of the swing and allowing that full punch of piston power to be achieved quickly.