Harvesters – Motorized harvester – With condition-responsive operation
56 149, 56364, A01D 7528
A header includes a substantially rigid header frame having a main longitudinal rear tube and a plurality of beams extending downwardly and forwardly from the main tube to a cutter bar which is maintained substantially straight and parallel to the main tube. Adjustment of the longitudinal shape of the cutter bar is effected after the header is assembled by operating screwjacks on two inner beams which cause plastic bending of the beams to raise or lower a center portion of the cutter bar so that when assembled the cutter bar is longitudinally straight or slightly upwardly concave. This adjustment after the assembly is complete allows the cutter bar to be adjusted to the required longitudinal shape for optimum cooperation with the reel.
patent: 4211057 (1980-07-01), Dougherty et al.
patent: 4517792 (1985-05-01), Denning et al.
patent: 5115628 (1992-05-01), Garter et al.
patent: 5473872 (1995-12-01), Fox et al.
patent: 5535578 (1996-07-01), Honey
Brochure of Case IH--"Soybean Header" (2 pages) undated.
Brochure of John Deere--"Dial-a-matic Header Height Control" (1 page) undated.
Fox Thomas R.
Battison Adrian D.
MacDon Industries Ltd.
Thrift Murray E.
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