Pitman mower

Details Pitman mower Pitman mower

1975-04-10

1976-05-11

Chamblee, Hugh R.

Harvesters

Motorized harvester

With condition-responsive operation

56 126, 56 152, 56 158, 56264, A01D 3508

Patent

active

039553442

ABSTRACT:
A pitman mower has a hitch frame, a drag bar, a cutterbar pivotally attached to the drag bar for pivotal movement in the transverse vertical plane and a drive mechanism for the cutterbar mounted on the drag bar. A pair of fore-and-aft extending links interconnect the hitch frame and drag bar in a generally horizontal four bar parallel linkage, the left link being resilient in the transverse direction, preferably comprising a leaf spring, having one end rigidly connected to its adjacent member. The right link comprises a breakaway pull bar assembly rotatable about an axis generally longitudinal thereof and has a float spring and lifting chain connected thereto and disposed to rotate the pull bar against the load imposed thereon by a gag link connected to the pull bar away from the axis of rotation thereof and extending to the cutterbar to control its rotation about the drag bar.

REFERENCES:
patent: 2495986 (1950-01-01), Schroeppel
patent: 3791115 (1974-02-01), Nelsen et al.

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