Patent ID: 6782807
Filing Date: 2004-08-31
Classification: A01F

Abstract:
In a twine tensioner including first and second, cooperating ribbed rollers, having respective ribs adapted for engaging a length of twine extending between the rollers, and being respectively coupled to first and second shafts, with said first roller being mounted for movement toward and away from said second roller and a spring assembly being coupled to said first roller for exerting a force yieldably resisting movement of said first roller away from a position wherein it is spaced a minimum distance from, and has ribs intermeshed with ribs of, said second roller, the improvement comprising:a mounting structure being provided with a guide surface engaged by and guiding said second shaft and being in such geometrical relationship to said spring assembly that as said first roller moves away from said second roller said force remains substantially constant, whereby a knot in a length of twine extending between said cooperating ribbed rollers may be pulled through said rollers without appreciably increasing a tension force in said length of twine.