Head

That part of a wooden press in which the nut of the spindle is fixed; it has a tenon at each end which fit into long mortises in the cheeks, not tightly, but sufficiently so to prevent lateral motion; and it is suspended from the cap by two long iron bolts, which go through the head and the cap, above which are iron washers and screws by which to lower the head, or screw it up tighter.

The head is usually made of elm. The whole of the pressure in the process of printing is between the head and the winter.