Detent—A stop or checking device, as a pin, lever, etc.
Dowel—A pin or peg, usually cylindrical, for joining together two adjacent parts.
Escapement—A mechanical device used for securing a uniform movement.
Gear—Any set of appliances as of cog wheels, serving to transmit motion.
Gib—A wedge-shaped or other piece of metal that holds another in place or presses two pieces together.
Link—Any intermediate rod or piece for transmitting force or motion, especially a short connecting rod with a bearing at each end.
Pawl—A hinged or pivoted piece, having a point, edge, or hook made to engage with ratchet teeth, as for driving a rachet-wheel, or preventing reverse motion; a click, detent, or ratchet.
Pinion—A toothed wheel driving or driven by a large cog wheel.
Segment—A geared wheel, cam, or pulley, the outline or efficient working surface of which is a section of the whole circle.
Slide—A sliding part of a machine or implement.