Direct-acting
Direct-acting , adjective
(Machinery) Acting directly, as one part upon another, without the intervention of other working parts.
Collocations (2)
Direct-acting steam engine , one in which motion is transmitted to the crank without the intervention of a beam or lever; -- also called direct-action steam engine.
Direct-acting steam pump , one in which the steam piston rod is directly connected with the pump rod; -- also called direct-action steam pump.