Duplicator and accompanying stencil carrier

Claim 1

IN A DUPLICATOR OF THE TYPE HAVING PARALLEL, SPACED ROLLERS, ONE OF WHICH IS DRIVEN IN A SYNCHRONIZED MANNER WITH THE MAIN AXLE OF THE DUPLICATOR AND THE OTHER OF WHICH IS AN IDLE ROLLER; A STENCIL CARRIER COMPRISING A PAIR OF ENDLESS BANDS ENTRAINED OVER THE ROLLERS AND COMPOSED OF FLEXIBLE MATERIAL INLAID WITH TWISTED THREADS OF FLEXIBLE, INEXTENSIBLE MATERIAL, SAID BANDS BEING SPACED APART A DISTANCE APPROXIMATELY EQUAL TO THE WIDTH OF A STENCIL, SAID BANDS HAVING RIBS PROVIDED ON THEIR INNER FACES FOR ENGAGING THE ROLLERS WHEREBY THE BANDS ARE POSITIVELY ENTRAINED ON THE ROLLERS TO INSURE SYNCHRONIZATION BETWEEN THE DRIVING ROLLER AND THE STENCIL, A STENCIL HOLDER CARRIED BY THE BANDS, SAID BANDS HAVING TRANSVERSELY ALIGNED AND SPACED APART OPENINGS FORMED THEREIN, SAID HOLDER HAVING TABS EXTENDING THROUGH THE OPENINGS TO THE INNER FACES OF THE BANDS, SAID TABS HAVING HOLES ALIGNED TRANSVERSELY OF THE BANDS AND A LOCKING ELEMENT FITTED IN THE HOLES TO LOCK THE HOLDER ON THE OUTER FACES OF THE BANDS.