METHOD OF ROUNDING THE BACKS OF BOOKS AND A MACHINE FOR PERFORMING THE SAME

摘要

A method and a machine for rounding the backs of books by first rounding one side of the backs with a first set of shaping rolls progressively approaching the median central plane of the books; whilst the books are conveyed through the machine and by then rounding the other side of the backs with a second preferably similar set of shaping rolls as the books continue to be conveyed through the machine.