Method and device for the permanent binding of sheaves of paper

摘要

A device for the permanent binding of sheaves of paper and method for using it to fasten sheaves of paper. The device comprises a rod made from synthetic material whose diameter is smaller than that of the perforations in the sheaf of paper to be joined, ending at one end in a checker top for limiting insertion and in the other in an entry zone of diminishing section, being fitted with a metallic, cylindrical and hollow sleeve, whose outside diameter is slightly less than that of the perforations of the sheets to be joined; at one end, the sleeve has a checker top for limiting insertion into the sheaf of paper and, at the other end and on the inside of the opening a rim with a diameter which is slightly smaller than that of the rod and which is pushed into it for the purpose of retaining it after the sleeve is moved along the rod until the check position is reached. <IMAGE>