The invention will be more apparent from the ensuing description of an embodiment thereof given by way of example. In this description reference will be made to the accompanying drawings, in which:
FIG. 1 is a side elevation of a trimming machine according to the present invention;
FIG. 2 is an enlarged and more detailed view of part of FIG. 1 relating to the trimming blade region;
FIG. 3 is an enlarged detail of FIG. 2, showing two books in the position for trimming their fore-edge;
FIG. 4 shows a further enlarged part of FIG. 1 in greater detail, relating to the region comprising the furrower means;
FIG. 5 is a vertical section through the machine taken on the line 5-5 of FIG. 1;
FIG. 6 is a vertical cross-section through the pair of belts, showing schematically a book with flapped cover in its position just prior to encountering the furrower means;
FIG. 7 is similar to FIG. 6, but with the difference that the book is shown in its position just prior to the trimming operation on its fore-edge.