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US 4,378,732 AGranted
Tying apparatus for agricultural roll balers
AssigneeGebruder Welger GmbH & Co. Kommanditgesellschaft
InventorsJurgen Simonis, Hans-Otto Sacht
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AssigneeGebruder Welger GmbH & Co. Kommanditgesellschaft
InventorsJurgen Simonis, Hans-Otto Sacht
Estimating the term…
Apparatus for forming roll bales of agricultural harvest material operating to helically tie the roll bales with twine is provided with a twine guide member moving along a front intake aperture of the baler and automatically controlled by a ratchet and pawl mechanism. The guide member is biased toward a lateral rest position by a spring. An actuating line is attached to the guide member to enable the guide member to be moved to an opposite lateral start position against the force of the spring. The actuating line is wound around a pulley of the ratchet and pawl mechanism. The ratchet and pawl mechanism includes a releasing disc which is driven by the twine itself during a tying operation and which carries a lifting cam which alternately disengages a pair of pawls of the ratchet and pawl mechanism. The guide member is first pulled by the actuating line into its start position and the spring will subsequently draw the guide member back toward its rest position with the return motion being controlled by the ratchet and pawl mechanism.
An apparatus for helically tying with twine roll bales of agricultural crop material formed in a bale chamber housing of a roll baler having an intake aperture extending across the width thereof comprising a guide member for guiding said twine along said intake aperture, spring means biasing said guide member toward a lateral rest position, said spring means being tensioned by movement of said guide member into a start position opposite said rest position and control means for controlling the rate of feed of said guide member during tying, said control means comprising a ratchet and pawl mechanism operating to hold said guide member in position against the force of said spring means and to release said guide member from movement toward said rest position under the force of said spring means.
Dependencies are inferred from the claim text.