| US 7,490,544 B1 | ||
| Twin twine arm for a baler | ||
| Shane A. Bollinger, Leighton, Iowa (US); and Ryan G. Walker, Newton, Iowa (US) | ||
| Assigned to Vermeer Manufacturing Company, Pella, Iowa (US) | ||
| Filed on Sep. 20, 2007, as Appl. No. 11/858,653. | ||
| Int. Cl. B65B 13/18 (2006.01); A01D 39/00 (2006.01) | ||
| U.S. Cl. 100—5 [100/13; 100/88; 56/341; 53/587] | 1 Claim |
| 1. A baler including a baling chamber having transversely spaced first and second sides and a double twines arm assembly for
dispensing twine for wrapping a large cylindrical bale located within the bale chamber, said twine arm assembly comprising:
a first twine arm including a first twine dispensing end being pivotally mounted for oscillation about an axis to sweep a
path between first and second locations respectively disposing the first twine dispensing end thereof adjacent the first and
second sides of the chamber for wrapping the twine on a bale being formed in the baling chamber, the bale having a width extending
from the first side to the second side of the chamber;
a second twine arm pivotally attached to the first twine arm including a second twine dispensing end and being mounted for
oscillating in a path at least adjacent to the path swept by the first twine arm;
a reversible drive coupled to said first twine arm for oscillating the first twine arm between said first and second locations;
a spring, having a biasing force, operatively attached to the first and second twine arms for biasing the second twine dispensing
end of the second twine arm to a first position away from the first twine dispensing end and permitting the second arm to
pivot to a second position wherein the second twine dispensing end of the second twine arm is closer to the first end of the
first twine dispensing end than in the first position thereof;
a stop operatively attached to and located at a place on the baler for engaging the second twine arm to stop the second twine
arm from moving toward the first location while the first twine arm continues to move toward the first location, thereby moving
the second twine arm end to move closer to the first twine dispensing end in opposition to the biasing force of the spring;
and
the baling chamber has a twine starting side on the first side of the chamber and a twine cutting side on the second side
of the bale chamber and the stop is located adjacent the starting side, a first distance between the first twine dispensing
end of the first twine arm and the second twine dispensing end of the second twine arm when the first and second twine arms
are at the twine starting side is significantly less than a second distance between the first twine dispensing end of the
first twine arm and the second twine dispensing end of the second twine arm when the first and second arms are at the twine
cutting side of the chamber, a position adjustable finger on the twine cutting side of the bale chamber for engaging the twines
to limit the twines from wrapping to the end of the bale.
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