B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
156/32.17
B65B 13/22 (2006.01)
Patent
CA 1141649
Abstract of the Disclosure Strap feeding and tensioning apparatus is pro- vided for use in a strapping machine to feed steel or plastic strapping in a loop around an object to be strap- ped and tension the strap loop about the object, provid- ing maximum gripping force on the strap and minimum mar- ring thereof. The apparatus includes a motor-driven drive wheel geared to a feed wheel, the drive wheel and feed wheel respectively having circumferential strap-engaging surfaces which cooperate frictionally to grip the strap- ping therebetween and move the strapping in a tensioning direction in response to rotation of the drive wheel. The axis of rotation of the feed wheel is shiftable about a fixed axis to accommodate movement of the feed wheel toward and away from the drive wheel, tensioning of the associated strap exerting a resultant force on the feed wheel tending to effect movement thereof about the fixed axis in a direction to increase the frictional gripping force exerted on the associated strap by the feed wheel and the drive wheel. The axes of the drive and feed wheels lie in a plane disposed at a predetermined angle of less than 26 degrees with respect to a plane defined by the fixed axis and feed wheel axis. For use with steel strap the strap-engaging surfaces of the drive and feed wheels are substantially smooth and the predetermined angle can be as low as about 6 degrees. For use with plastic strap- ping the drive wheel has a toothed or knurled strap-en- gaging surface and the predetermined angle can be as low as about 12 degrees.
346892
Simmons James R.
Weller Frank C.
Cass Strapping Corporation
Hewitt Neville S.
LandOfFree
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