Land vehicles – Wheeled – Articulated vehicle
Patent
1983-05-09
1985-05-28
Pekar, John A.
Land vehicles
Wheeled
Articulated vehicle
280481, 172439, A01B 59043
Patent
active
045196230
ABSTRACT:
A tractor front end hitch comprising a main frame removably secured to the front end of a tractor and having a pair of lower lift arms pivotally secured thereto and extending forwardly therefrom for connection to the implement. A pair of upper lift arms are pivotally secured at their rearward ends to the main frame and extend forwardly therefrom above the lower lift arms. A length adjustable float arm assembly is pivotally connected at its upper end to the forward end of each of the upper lift arms and is pivotally connected at its lower end to one of the lower lift arms rearwardly of the forward end thereof. Each of the float arm assemblies has a clevis element at the lower end which is provided with an elongated slot to permit the associated lift arm to vertically move or float relative to the upper lift arm associated therewith. A float stop pin is removably insertable into the slot in the clevis element to limit the float. A top link is pivotally secured at its rearward end to the main frame and extends forwardly therefrom for connection to the implement. Each of the lower lift arms has a box frame construction to achieve the desirable compressive strength for the lift arm and for limiting the lateral sway or movement of the lift arm.
REFERENCES:
patent: 2749823 (1956-06-01), Mitchell
patent: 3145781 (1964-08-01), Rogler
patent: 3201878 (1965-08-01), Markwardt
patent: 3255828 (1966-06-01), Abbott
patent: 3910355 (1975-10-01), Elfes et al.
patent: 4116458 (1978-09-01), Berg
patent: 4181181 (1980-01-01), Old
2010 Gasoline Wheel Tractor, John Deere Operator's Manual OM-T-15371T, 1961, p. 26.
Orthman Manufacturing Inc.
Pekar John A.
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