by positive interengagement, e.g. by a pawl

Full Title

Means for preventing, limiting or returning the movements of parts of a control mechanism, e.g. locking controlling member (G05G17/00 takes precedence) > for holding members in an indefinite number of positions, e.g. by a toothed quadrant (G05G5/28 takes precedence) > by locking a member with respect to a fixed quadrant, rod, or the like > by positive interengagement, e.g. by a pawl