US 4,691,785 AGranted

Reversible plow and carriage

AssigneePost Brothers Construction Co.

InventorCharles R. Post

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Abstract

There is disclosed a carriage for an agricultural implement, particularly for a reversible plow, in which the wheels at each side of the carriage are mounted to the carriage with forks which are pivotally received on a main axle and which have lift arms interconnected to a lift assembly. The wheel lift assembly has lift levers fixedly secured at opposite ends of a lift shaft and these are connected to their respective lift arms on the wheel forks by lift links having adjustable pinned connections to the lift levers whereby the fulcrum of each lift lever can be changed by insertion of pins in preselected, aligned pairs of apertures between the link arm and lift lever. The fulcrum positions of the lift levers control the elevations of the wheels on the carriage. The lift assembly is also provided with a fulcrum selector which, when shifted sidewise on the frame, inserts pins into preselected, aligned pairs of apertures and retracts pins from other apertures, thereby reversing, from side-to-side, the elevations of the wheels. This carriage is disclosed in combination with a reversible plow having a plow bar supporting two plow assemblies which can be rotated through a 180-degree arc, to reverse, side-to-side, the position of the plow.

In a carriage having at least one support wheel mounted on each of its left and right sides with wheel lift assembly means for a controlled, variable elevational position of each wheel, the improvement comprising:

(a) a carriage frame having at least one longitudinal member and front and rear cross members;
(b) said wheel lift assembly means comprising a main axle and a wheel lift shaft extending laterally across, and secured at spaced-apart positions to, said carriage frame;
(c) right and left wheel forks, each with a fork knuckle on one thereof, each said fork knuckle pivotally received over an opposite end of said main axle, and said right and left wheel forks each distally supporting a wheel axle on the other end thereof;
(d) right and left wheels comprising said at least one support wheel, one each rotatably received on its respective one of said wheel axles supported by said wheel forks;
(e) right and left fork arms, one each fixedly secured to and projecting from its respective wheel fork;
(f) right and left wheel lift levers pivotally mounted on said lift shaft at opposite ends thereof, and each having a first plurality of spaced-apart apertures;
(g) right and left lift links, one each distally and pivotally attached to its respective one of said fork arms and extending to its respective one of said lift levers and having a second, like plurality of apertures at equal spaced-apart intervals to said first plurality of apertures whereby respective pairs of apertures of said first and second pluralities of apertures are aligned in at least one position of said wheel lift assembly means;
(h) right and left removable pin means, one each inserted in a preselected, aligned pair of said apertures;
and
(i) means to rotate said lift shaft whereby said lift assembly means displaces said right and left wheels a controlled vertical distance as determined by the insertion of its respective one of said pin means in a preselected aligned pair of said apertures.

7 more elements

Abstract

Claims20