Abstract: A snow plow lifting device is operatively connected to a snow plow for selectively imparting a lifting force on the snow plow. This lifting force reduces the effective weight of the snow plow bearing on an underlying surface such as a roadway. Thus, during a snow plowing operation, this reduces the wear on a lower edge of a blade that forms a part of the snow plow.

Abstract: An improved height adjustment mechanism comprises a height adjustment arm permanently affixed to a wheel mounting member, the wheel mounting member pivoting around a bracket which is permanently connected to the underside of a longitudinal structural member. The height adjusting arm comprises two opposed parallel guide plates, arranged vertically, and attached at their lower extreme to the wheel mounting member. The height adjustment arm is raised and lowered by operation of height adjustment means attached to the top of the arm, the height adjustment means having both ends pivotally attached to the top side of the platform frame member. The guide plates of the height adjustment arm are pierced through with a series of opposing pairs of support openings, to which a support pin may be fitted. Placement of the pin then serves as a physical stop for the underside of the longitudinal structural member as the frame is lowered. The weight of the platform is thus borne by the support pin and the wheel arm.

Abstract: Lift structure particularly useful with front mounted implements for providing both lift and weight transfer functions from a single valve. The valve acts as an adjustable bleeder for the lift cylinder and includes a control knob which is movable both axially and rotationally to respectively provide lift and adjustable flotation. The valve is normally biased to an adjustable orifice position for operating the implement in a lowered, flotation position. To momentarily lift the implement, the operator moves the control knob against the bias to direct flow to the lift cylinder thereby raising the implement off the ground. When the operator releases the valve, it automatically returns to the preset orifice position to provide the desired flotation.

Abstract: An apparatus for picking up rocks, which attaches to an agricultural tractor and functions to pick up rocks located on or partially embedded in the soil of a field, is provided. The three embodiments disclosed all function in a similar manner with one fixed jaw and one movable jaw, with each embodiment containing interlocking tines to close beneath and lift up the rock to be moved.

Abstract: An agricultural implement has a main pull-type frame carrying a first set of ground-engaging tillage tools and a subframe carrying a second set of tillage tools. A lift mechanism including an hydraulic cylinder operated from the operator's position on the tractor pulling the implement adjusts the height of the subframe relative to the main frame to set the working depth of the tools on the subframe. A preload spring cushion mechanism is interposed between the main frame and the hydraulic cylinder to permit the subframe to lift for smaller obstacles and be reset by the spring without actuating the pressure relief valve. The force of the spring assists in resetting the subframe to its desired working depth after the obstacle is passed. In the illustrated embodiment, the spring cushion mechanism has an increasing moment arm as the spring compresses thereby to equalize the resetting force applied to the lift mechanism; and it is preloaded so that the operator can adjust the operating depth of the subframe.

Abstract: Components suitable to be sold in kits can be readily applied to cultivators of different makes to be able to raise and to lower independently the ground-working tools on either side of the cultivators. A typical kit contains an upper supporting member, two crossbars, and fastening means for readily attaching the components to a typical cultivator of any make. After installation, the upper support extends upwardly and rearward from the front drawbar to provide a point of support above carriers of a cultivator that are to be ganged for lifting. A crossbar is connected to the rear portion of each of the carriers to be ganged, and then a hydraulic cylinder positioned substantially vertically is connected between each crossbar and the upper support.

Abstract: An auxiliary shovel operatively mounted on each side of an agricultural implement, each being laterally disposed relative to the usual rows of shovels. A ground marker laterally extending from each side of the implement and being automatically operable into down ground engaging and marking position and into raised inoperative position. Each auxiliary shovel being connected with the marker which extends laterally from the same side of the implement, and means automatically connecting each shovel to a marker, each shovel being in down operative ground engaging and digging position when its corresponding marker is in down ground marking position and being in inoperative raised position when its corresponding marker is in raised position. The positions of the two laterally extending markers being controlled by the operator of the implement.

Abstract: A device that includes a bracket, a hydraulic cylinder having an end pivotally mounted on an axis of the bracket, a first link pivotally mounted on the bracket on one side of the cylinder and pivotally connected to the extension end of the cylinder, a support structure pivotally mounted on the axis and having a plurality of earth working tools, and a second link pivotally mounted on the support structure on the other side of the cylinder and pivotally connected to the extension end of the cylinder. The device, including the bracket, is particularly arranged and constructed to be mounted on a multi-hitch structure for a plurality of grain drills to remove a tractor track prior to planting. The cylinder rotates the device from a working position to a transport position that is substantially in excess of 90.degree. therefrom. Tool depth adjustment and levelling means are also provided.

Abstract: This invention consists of a vehicle for handling multi-furrow ploughs, which are very heavy and are equipped with only one wheel in the rear, when not attached to a tractor during operation. It consists of a two wheeled cart provided with two hooks attached to the main body of the cart, by means of which the front end of the plough is picked up and held, and a central arm for pulling the cart which is swivably attached to the main body. A ratchet operated cylinder having two oppositely threaded screws, one going in or out at each end simultaneously, is swivably attached to the arm and to the main body of the cart, so that turning the ratchet in one direction expands the distance between the screw ends thus lowering the hook towards/the ground to pick up the front end of the plough, and turning it in the opposite direction reduces that distance and lifts the hooks and front end of the plough to make it mobile.

Abstract: An earth working apparatus for use in agricultural pre-planting operations includes a first frame having laterally spaced ground engaging wheels and a second frame having a leading edge thereof pivotally mounted on the first frame adjacent a leading edge thereof and movable between a storage position and a working position. The second frame has a mower thereon for cutting vegetation extending above a ground surface and a first plurality of sweeps for opening a plurality of laterally spaced furrows to receive gaseous fertilizer therein and a second plurality of sweeps to close the furrows after introducing the gaseous fertilizer thereinto. The first plurality of sweeps each have a flow passage thereon for flow of gaseous fertilizer into the respective furrows from a storage and supply tank mounted on the first frame.

Abstract: The present invention relates to a hydraulic lift attachment that is universally attachable to almost all makes and models of tractors. In one embodiment, the lift attachment comprises a frame, a hollow support member rigidly attached to and depending from the frame, and a boom pivotably mounted at one end to the frame and extending rearwardly therefrom. A hydraulic piston assembly is connected between the boom and the frame and operates off the tractor's hydraulic system for pivotably moving the boom. The frame is primarily supported by the tractor draw bar which is inserted in the support member and secured thereto with removable bolts. Two chains, rigidly attached at one end to respective sides of the frame, are connectable at the other end to the lift arms of the tractor's three point hitch and provide additional support for the frame.