Fig. 28.
Having shown how to delineate the locking face of the engaging pallet when locked, we will now consider how to draft both it and the disengaging pallet in correct positions when unlocked; to do so we direct our attention until further notice to [Fig. 28]. The locking faces
Q M
of the engaging and
S N
of the disengaging pallets are shown in dotted lines when locked. We must now consider the relation which the locking faces will bear to
E B
in the engaging, and to
F B