Placed or situated overhead, or at a distance above the ground. Also (of a driving mechanism): situated above the object driven; (of a machine)…

step by step. attributive or quasi-adj. = that moves or advances step by step; esp. (of mechanisms and the like) moving with pauses at regular…

Designating a mechanism, component, etc., that tightens a machine belt.

Designating a mechanism by which some part of a machine is disconnected, or its action suspended (esp. the mechanism by which the driven and driving…

Mechanics. Designating, relating to, or involving a part which rotates about its own centre or central axis, while the axis itself rotates about…

That preselects something; permitting or involving preselection; that uses or includes a preselector.

Of a machine, mechanism, etc., or its motion: smooth.

Of, relating to, or involving a servomechanism.

Of or relating to the operation of a device or mechanism by means of a servomechanism.

Of a mechanism: turned on or off by a switch. Also figurative.

(of a mechanism) maintained at a constant rate of rotation by means of a vibrating quartz crystal; (of speed control) that maintains a constant…