Positive

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Positive

(a.) Designating, or pertaining to, a motion or device in which the movement derived from a driver, or the grip or hold of a restraining piece, is communicated through an unyielding intermediate piece or pieces; as, a claw clutch is a positive clutch, while a friction clutch is not.
(a.) Designating, or pertaining to, a device giving a to-and-fro motion; as, a positive dobby.
(a.) Designating a method of steering or turning in which the steering wheels move so that they describe concentric arcs in making a turn, to insure freedom from side slip or harmful resistance.