Pleger, John J · Chicago : The Inland printer company · leaf 121
Roller BackiriK Machine. 106 BOOKBINDING the roller forward and back two or three times. Releasethe clamp by stepping on the treadle, and remove thebook. ROUNDING AND BACKING MACHINE (CROWLEY).The production of letterpress books by machine hadits beginning with the invention of the rounding… … was thus eliminated. After the backs of the books havebeen glued up as described under Rounding, the booksare fed into the machine between a pair of rollers, theback resting against the guides, which must be accuratelyset. The upper roller descends on the book, the guidesrise up out of the way, and…
Bookbinding
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