Abstract: A torsion bar disk gang mounting assembly includes a shaft pivotally suspended from a disk frame. A rectangular tube receives a portion of the shaft. A pair of disk gang support arms are pivotally coupled to the shaft and extend generally rearwardly therefrom. The arms are fixed to opposite ends of the tube and support a disk gang at their distal ends. A torsion bar is resiliently coupled between the tube and the shaft to bias the disk gang downwardly. A method of making such a disk gang mounting assembly includes the steps of assembling the shaft, tube and torsion bar, then fixing the arms to ends of the tube. The shaft is then pivoted with respect to the tube and arms to establish a predetermined preload in the torsion bar. A stop arm is then fixed to the shaft in engagement with an abutment on one of the arms to maintain the preload in the torsion bar and to limit downward movement of the disk gang.

Abstract: An hydraulic ram is situated between the tillage tool and the frame and is normally fully extended and acts as a rigid link. The ram has a predetermined and adjustable pressure so that if an obstruction is encountered by the tool, it only retracts when the preset pressure is exceeded and then returns to the fully extended position as soon as the obstruction is passed. It can be used on machines such as discers, hoe drills, press drills or any ground working implement which includes tillage tools which are pivoted to the frame and which do not engage the ground by raising and lowering the frame. An adjustable pressure reducing valve is situated in the hydraulic line extending to the ram and senses the pressure downstream of the valve rather than the pressure upstream as is usual.

Abstract: A method and apparatus of treating or cultivating soil consists of a mobile chassis which when propelled over the ground, has means for removing a predetermined amount of soil from the ground to create an open trench therein, tilling the removed soil and mixing additives therewith and further mixing the soil and forceably replacing the soil into the trench.

Abstract: In a disc harrow, the disc gang is connected to the harrow frame by shock absorbing support assemblies. Each support assembly includes a rigid standard with an upper end fixed to the frame. The lower end of the standard is pivotally attached to a forward end of a bearing arm. The rearward end of the bearing arm supports the gang bolt via a bearing. A coil spring is connected between a yoke on the mid portion of the arm and a flange extending rearward from the upper end of the standard. A bolt extends through the flange and is threaded into the yoke so that the separation between the yoke and the flange may be adjusted to preload the spring.

Abstract: A rotary hoe implement includes upstanding spacer members for connection to a tool bar for drafting by a tractor. A rotary hoe supporting arm is pivotally connected to a lower end of the spacer member and an elongate adjustment rod extends from a rear end of the rotary hoe supporting arm to an upper end of the spacer member. A spring member is sleeved on the adjustment rod and cooperates with spring length adjusters on the rod to bias the rotary hoe downwardly into ground engagement and control the up and down movement thereof as the hoe travels over the earth surface. The rotary hoe implements are constructed or ganged together as units and are selectively mountable along the length of the tool bar for operator control.

Abstract: In cultivating or rolling soil by rollers with several hinged interconnected frame sections, each having a set of rolls on a common shaft, rotatably journalled at the ends of downwardly dependent arms the rolls closest to a hinge will not roll the soil at all or too loosely in case of irregular or uneven ground.To avoid this inconvenience the arms are pivotably and preferably also resiliently mounted on the frame in addition to which the arms are slightly rotatable or twistable about its longitudinal axis to allow a deviation from horizontal of the shaft which thus may follow the irregularities of the ground so that the roller rolls the soil very efficiently.

Abstract: An attachment for a mobile ground irrigation tower including a pivotal arm which supports a pair of spaced downwardly biased disks that serve to close the track formed by the tower wheel in the ground. The horizontal spacing of the disks may be varied to accommodate tracks of different widths.

Abstract: A wheel rut closing device for use in combination with an irrigation system having an irrigation line support or supports, each support having rotatably mounted thereon a wheel or wheels. The wheel rut closing device is mounted on each irrigation line support and generally comprises an implement support frame mounted on the irrigation line support and extending generally rearwardly of the wheel, a rearwardly trailing implement holder pivotally connected to the frame, and apparatus carried by the holder for closing a wheel rut created by the wheel. A device is also provided which is connected to the frame and the holder for raising and lowering the holder to the desired height.

Abstract: Soil conditioning apparatus is disclosed which has a front coulter assembly, preferably with a fluted coulter, for preparing a narrow path wider than the following subsoiler shank by cutting trash and breaking and slitting the topsoil. Following the front coulter assembly is the subsoiler assembly for further breaking the surface soil and breaking and shattering the "hard pan" created by years of conventional tillage. Following the subsoiler assembly is the slot filler assembly for filling the slot or crevice left by the subsoiler as it moves through the ground, a sufficient amount to prevent cave-ins or settling which would carry seeds too deep to properly germinate. Behind the slot filler wheel assembly means is the seed bed implement assembly for preparing the seed bed by pulverizing the soil and by removing trash which may have remained in the seed bed region after the above mentioned prior operations.

Abstract: A depth control device is attached to agricultural implements such as cultivators, seed drills, discers and the like, in order to control, within pre-determined limits, the depth of penetration of the earth working components. It comprises firstly a ground or surface engaging sensing member extending forwardly of the framework and secondly, a sensor that is connected to the earth working components. Both of these sensors are connected to mechanism to raise and lower the earth working components which controls the depth of penetration thereof so that, for example, if uneven ground is encountered, the depth penetration is corrected and if the density changes of the ground being worked, thus affecting the suction, then once again depth penetration is corrected. Structure is provided to average out the effect of conditions changing the depth of penetration so that the desired average depth of penetration is maintained particularly in relatively wide machines.

Abstract: A depth control for grain drills, planters or the like utilizing a press wheel which can be adjusted to control the depth of each individual furrow opener to insure uniform depth of planting across the width of wide machines presently in use.

Abstract: A down pressure control for use with furrow openers in grain drills which provides a spring load for maintaining down pressure on the furrow opener during normal operating conditions and which can be at relatively high rate to permit minimum tillage, or work in hard ground, but yet will release upon excessive movement of the furrow opener to prevent overstressing the hold down springs. The down pressure control is used in combination with an individual depth control for each of the furrow openers to insure that each furrow opener is individually controlled as to down pressure and depth.

Abstract: Disk gangs are resiliently suspended from an implement frame by retroverted flat spring members. Flat surfaces of the springs are oriented perpendicularly to the disk blade shaft to thereby permit vertical and fore-and-aft flexing of the disk gangs as obstacles are encountered and yet minimize lateral movement of the gangs to retain gang blade alignment between front and rearwardly positioned disk gangs.

Abstract: A hanger mechanism for the attachment of a soil engaging tool to a horizontal tool bar located at the forward end of an agricultural vehicle through a series of pivotally interconnected structures. The hanger mechanism includes an upper and lower arm structure which extend forward from the tool bar and are disposed one above the other. A vertical bar structure is pivotally connected to the forward ends of the upper and lower arm structures with the upper and lower arm structures parallel. An implement arm having an upper end adjacent and below the forward end of the lower arm structure extends rearward and downwardly to a lower end. The implement arm is pivotally attached between the upper and lower ends thereof to an extension of the vertical bar structure. A connecting link is pivotally attached at one end to the lower arm structure rearward from the forward end thereof, and pivotally attached at its other end to the upper end of the implement arm.

Abstract: A harrow having two horizontal elongated tined members the ends of which are driven around substantially vertical axes and including a soil contacting elongated element mounted to each of the tined members.