Earth working – With actuator on trailing ground supported frame for moving... – Vertically
Patent
1993-03-29
1994-11-15
Reese, Randolph A.
Earth working
With actuator on trailing ground supported frame for moving...
Vertically
172677, 2804051, A01B 59042
Patent
active
053639243
ABSTRACT:
A pair of grain drills are positional for side by side operation in the field and connected to a towing tractor by weight transfer hitch having a rear end portion connected to the grain drills and a forward tongue portion having its front end connectable to the tractor drawbar and its rearward end totally connected to the forward end of the rear hitch portion for swinging about a transverse horizontal pivot. A hydraulic cylinder has its ends respectively connected to the tongue and the rear hitch portion and pressure to the cylinder is controlled by an adjustable pressure control valve that delivers pressurized fluid from the tractor hydraulic system to the cylinder at a pre-selected pressure below the tractor system pressure, whereby the force exerted by the cylinder on the tongue transfers a portion of the weight of the machine to the tractor drawbar.
REFERENCES:
patent: 3463510 (1969-08-01), Van Syoc
patent: 4588201 (1986-05-01), Mohrbacker
patent: 5261497 (1993-11-01), Snyder et al.
patent: 5265898 (1993-11-01), Houck
Erskin Manufacturing Company Inc. brochure entitled "Two Drill System Custom Engineered for the John Deere 750 No-Till Drills" published in U.S.A.
Foley Daniel M.
Snyder Michael D.
Deere & Company
Reese Randolph A.
Warnick Spencer
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