- a platelike part of a mechanism, oscillating in its own plane, to which links or rods are attached by pins.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for wrist plate
The exhaust valves are both opened and closed by the action of the wrist-plate and connecting rods.
When in operation, the bell-crank is rotated in the direction of the arrow by the action of the wrist-plate and connecting-rod.
The valve gear is of the regular Corliss type, driven by a single eccentric and wrist-plate.