Harvesters – Raking and bundling
Reexamination Certificate
2000-06-15
2002-09-17
Will, Thomas B. (Department: 3671)
Harvesters
Raking and bundling
C056S364000
Reexamination Certificate
active
06449936
ABSTRACT:
BACKGROUND OF THE INVENTION
The geometry of the linkages currently used for suspending the windrow pick-up on a known cylindrical baler having a wide pick-up overloads the system resulting in premature wear of components. Additionally, the cantilevered method of mounting the pick-up to the baler creates large moments when the wide pick-up is used with secondary augers, which add weight to the system. Due to this large mass, the pick-up flotation is difficult to control, resulting in the pick-up “hopping” during operation. Also, the windrow pick-up mechanism is very heavy to lift manually when service is required.
SUMMARY OF THE INVENTION
According to the present invention, there is provided an improved pick-up float suspension.
An object of the invention is to provide an improved suspension for permitting a crop pick-up to undergo a controlled float during operation.
A more specific object is to provide a pick-up which is suspended so as to undergo floatation during operation and wherein a float spring assembly is so located and arranged that it imposes a substantially constant lifting force on the pick-up throughout its vertical movement.
Still a more specific object is to provide a wide pick-up, for use with a large round baler, which is used together with an intermediate conveyor including centering augers mounted for rotation about a horizontal transverse axis located behind the pick-up wherein the pick-up is mounted for pivoting vertically about the transverse axis.
These and other objects will become apparent from a reading of the ensuing description together with the appended drawings.
REFERENCES:
patent: 2757602 (1956-08-01), Nolt
patent: 2839981 (1958-06-01), Harstick et al.
patent: 3798885 (1974-03-01), Glass et al.
patent: 3939631 (1976-02-01), Blanshine
patent: 4085571 (1978-04-01), Mortier et al.
patent: 4187666 (1980-02-01), McIlwain
patent: 5916116 (1999-06-01), Vande Ryse et al.
patent: 6212865 (2001-04-01), Peeters et al.
Anstey Henry Dennis
Derscheid Daniel Eric
Engel Manfred
Frimml Roger William
Deere & Company
Mammen Nathan
Will Thomas B.
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