US 4,067,179 AGranted

Driving arrangement for a harvester

AssigneeBusatis-Werke KG

InventorRudolf Schneider

Life of this patent

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Abstract

A pair of cooperating elongated cutting members is mounted on the frame of a harvester for reciprocation along a common plane located intermediate the cutting members by means of arms pivotally connected to the frame and to the cutting members. A lever is pivoted to each of the cutting members and to the frame and has the same effective length as the associated arm, the pivot points of the associated arm and lever being located in the corners of an imaginary parallelogram. A crank drive moves a pair of connecting rods which are articulated to the respective levers intermediate the pivot points thereof. The cutting members have a plurality of recesses which are laterally bounded by cutting edges extending transversely of the elongation of the respective cutting members so that the objects which enter into the recesses are cut by the cutting edges in the common plane. The axis of rotation of the crank may be vertical, while the levers and arms may reciprocate in parallel horizontal planes. A hydraulic motor for driving the crank may be located directly above the crank, and the crank may be mounted on the output shaft of the motor for shared rotation therewith.

Claims15

Dependent claims

In a cutting machine, particularly in a harvester, a combination comprising support means;

cutting means including a first and a second cutting member having respective cutting edges;
means for mounting said cutting means on said support means for individual displacement along a common plane located intermediate said cutting members, including at least one first and one second arm, a first and a second journal mounting said first and second arms, respectively, on said support means for movement in parallel planes, and a first and a second pivot articulating said first and second arms, respectively, to said first and second cutting members, said first pivot being spaced a first distance from said first journal, and said second pivot being spaced a second distance from said second journal;
and means for displacing said cutting means, including driving means, crank means driven by said driving means into rotation about an axis normal to said parallel planes and including a first and a second crank portion offset from said axis, and transmission means including a first and a second lever, a first and a second additional journal mounting said first and second levers, respectively, on said support means for movement in parallel planes, a first and a second additional pivot articulating said first and second levers, respectively, to said first and second cutting members, said first additional pivot being spaced said first distance from said first additional journal and said second additional pivot being spaced said second distance from said second additional journal, and a first and a second connecting rod mounted on said first and second crank portions, respectively, and pivoted to said first and second levers, respectively.

Dependencies are inferred from the claim text.