B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
156/32.15
B65B 51/08 (2006.01)
Patent
CA 1294529
ABSTRACT A machine for applying a twist-type tie to the neck of a bag has a path and sets of endless belts which come together at a nip along the path to propel a bag neck which passes into the nip forwardly to a tying zone in the path. Here a twist-type ribbon crosses the path and is secured at its end in a holder. An endless chain carries a pusher tab up to the tying zone behind the bag neck, causing the bag neck to gather behind and deflect the ribbon, then pauses, and thereafter resumes its forward motion to drive the bag neck out of the machine. During the pause a bag clamp secures the bag neck against a surface that is along the path and a needle lifts a portion of the ribbon upwardly behind the gathered bag neck and brings that portion of the ribbon to the holder so that the ribbon loops below the bag neck in the form of leading and trailing segments. While the needle is extended, a twister hook gathers its leading and trailing segments and twists them together. As the tie is completed, the holder shears the trailing segment of ribbon and at the same time grips that segment so the ribbon remains extended across the path. A ribbon stripper moves forwardly from behind the twister hook and clears the severed twist tie from the tying zone as the pusher tab resumes its forward motion.
560337
Miravalle Peter S.
Swabey Ogilvy Renault
LandOfFree
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