Importance

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Abstract

Seaming apparatus has two sets of opposed seaming rollers (21, 22 and 23, 24) rotatably mounted on a base (20) and positioned so that the sets successively engage and track on opposite side edge portions of the panel and bend a terminal side section (17) under to form a continuous seam. A drive motor (111) and drive train (81, 82, 83, 84, 113) between the motor and rollers provides a direct positive drive for each roller. One roller of each set is mounted on a slidable base portion (27) that provides for varying the roller spacing and is removable from a main base (26) and reinsertable thereinto along the opposite side to reverse roller positions. Modified forms of seaming apparatus have two spaced slide bores (335) in blocks (333) sandwiched between spaced plates (331, 332) with thrust pins 341 slidable in the bores for guided movement of two base portions (326, 327). A dual clevis (370) on a single actuator arm (363) and detents (382) on the inboard base portion with springs (350) between the base portions move and lock the base portions. Pin (401) and slot (402) couplings are disclosed for interchanging the outboard rollers or a duplicate set of leading rollers (531 and 532) is used on the opposite ends of the base portions for reversing the direction of the seaming apparatus.

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First Claim