Mechanism for folding-in or folding-over end closure portions of a bag in a bag-fabricating machine

摘要

821,374. Toothed gearing. HESSER, MASCHINENFABRIK A.G., F. May 1, 1957 [May 29, 1956], No. 13886/57. Class 80 (1). [Also in Group XVII] A carrier-wheel for bag closure folders (see Group XVII) is given a rotary motion which varies in speed during each revolution, through an arrangement comprising two coaxial gears 23, 24, the gear 24 being connected directly to the carrier-wheel and the gear 23 to the driving mechanism (not shown). A connecting epicyclic gear 25 is oscillated by an arm 28 actuated by an eccentric 27 to give the required speed variations.