Office punch with U=shaped hand lever - cuts four holes in leaf edge with inner holes oval and has waste box in moulded plastics body

摘要

The office punch is lever-handle acutated, cuts four aligned holes of which the inner pair are oval. It is used on paper sheets in prepn. for insertion in a conventional bi-pronged file, and suits a wide range of file types. A moulded plastics body constitutes a flat base in the form of a confetti box, with two pairs of integral pillars (7, 8) which cantilever over the base to form two forks. Each pillar has a bore locating a punch (12, 14) which can slide normal to the base. The outer punches are of round section, the inner punches are of oval section, and all punches traversing the cantilever gap (9) to pass through windows in the top of the base. A horizontal rod (16) connects the heads of the punches and the leg ends (17) of a 'U' shaped hand-lever, each leg end continuing a short distance to be pinned (21) to a stirrup (10) which is itself pinned (22) between pillars. Springs (18) on the outer punches maintain all punches in a raised repose position leaving the cantilever gap clear for leaf insertion.