Rebinding grinder

Claim 1

IN A BOOK GRINDING MACHINE, OPPOSED CLAMPING PLATES, MEANS FOR EFFECTING RELATIVE MOVEMENT OF SAID PLATES TOWARD AND AWAY FROM EACH OTHER TO SELECTIVELY CLAMP AND RELEASE A PLURALITY OF BOOK PAGES THEREBETWEEN IN FACE-TO-FACE RELATION, A BOOK SUPPORT ADJACENT OF CORRESPONDING EDGES OF SAID CLAMPING PLATES ADAPTED TO BE ENGAGED BY A PORTION OF SAID BOOK PAGES EXTENDING FROM SAID EDGES OF THE CLAMPING PLATES TO POSITION SAID PAGES AS THEY ARE CLAMPED BETWEEN THE CLAMPING PLATES, MEANS FOR ADJUSTING THE SPACING BETWEEN SAID SUPPORT AND SAID CLAMPING PLATE EDGES TO VARY THE AMOUNT OF THE PAGES EXTENDING FROM BETWEEN SAID CLAMPING PLATES, OPPOSED RIBS ON SAID PAGE-ENGAGING FACES OF THE CLAMPING PLATES ALONG SAID EDGES THEREOF FOR CONCENTRATION OF CLAMPING FORCE ADJACENT THE SAID CLAMPING PLATE EDGES, A ROTATING CUTTER OPPERABLE TO CUT IN A PLANE BETWEEN SAID BOOK SUPPORT AND SAID CLAMPING PLATE EDGE AND SUBSTANTIALLY PARALLEL TO THE PLANE OF SAID EDGES OF THE CLAMPING PLATES, SAID CUTTER BEING SPACED FROM SAID SUPPORT IN A DIRECTION LONGITUDINALLY OF THE CLAMPING PLATES, MEANS MOVING THE CLAMPING PLATES RELATIVE TO SAID CUTTER FOR CUTTING THE EXTENDING BOOK PAGES TO FORM A PLANAR EDGE THERETO, SAID ROTATING CUTTER CONSISTING OF A CYLINDRICAL DISC MEMBER HAVING AN END FACE AND A V-SHAPED GROOVE IN THE PERIPHERY