Pleger, John J · Chicago : The Inland printer company · leaf 74
striker cam head. With the third setof pens proceed in the same manner as with the secondset, but use the other underlift bar, other pen rest, andother set of cams. Feed a sheet through and rule; ifall the struck lines do not drop and rise at the properpoints, adjust the cams a trifle either way… … 64 BOOKBINDING UNDERLIFT BAR. This is a small, half-round bar with a flat piece ofsteel on top, forming a clamp to hold small pieces ofbrass or tin which are set beneath any number of thepens to raise and lower them as the bar rises and lowers,independently and separately from the rising and…
Bookbinding
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