Origin of direct-acting
Examples from the Web for direct-acting
In a direct-acting engine the throw of the crank is equal to the stroke of the piston.An Introduction to Machine Drawing and Design|David Allan Low
Each was fitted with a Blake, horizontal, direct-acting, vacuum pump.
Fishers carriages were driven by direct-acting engines, one cylinder on each side of the smoke-box.Automobile Biographies|Lyman Horace Weeks
A vastly simpler form of pumping-engine without fly-wheel is the now common “direct-acting steam-pump.”A History of the Growth of the Steam-Engine|Robert H. Thurston
Direct-acting compressors are liable to center when doing work at slow speed.