A tillage implement has a frame with a center section and first and second outer wing sections hingedly attached to respective outer ends of the center section. Controlling a pressure in a secondary side of a hydraulic circuit enables adjustment of the downward pressure precharge provided by hydraulic cylinders based on a desired stiffness of the implement. Flow from a hydraulic supply through a pressure-reducing valve puts the downward pressure precharge on gauge wheels. Once this desired downward pressure precharge has been achieved, flow from the hydraulic supply is shut off and a check valve holds the pressure such that the hydraulic cylinders hold the gauge wheels in the desired position.

A hinge for a gauge wheel arm for movably swinging the gauge wheel away from the agricultural equipment, such as an agricultural planter, is disclosed. The hinge is located along the length of the gauge wheel arm for rotating the gauge wheel away from the agricultural equipment to expose an inner surface of the gauge wheel and an interior portion of the agricultural equipment. The gauge wheel arm rotates about an angle of rotation formed by the hinge and permitting rotation between 0 and 180 degrees. The gauge wheel arm may also include a lock bolt for preventing rotation of the gauge wheel when desired.

Ground opener units for agricultural seeding machinery and the like utilise a gauge wheel and associated depth adjustment mechanism for regulating the penetration depth of the disk opener in use. An improved gauge wheel adjustment assembly comprises a spindle adapted to be rotatably supported in a spindle sleeve, the spindle having a shaft with a first end with a rectangular boss adapted for engagement with a depth adjustment handle of the disk opener and a second end with a tapered spline engagement formation. A gauge wheel support arm has a complementary tapered spline formation for engagement with the spindle second end.

A row unit for a seed-planting implement includes a frame, a gauge wheel arm pivotably coupled to the frame, and a gauge wheel rotatably coupled to the gauge wheel arm. Additionally, the row unit includes a wobble bracket configured to engage the gauge wheel arm, a linkage arm coupled to the wobble bracket, and a pivot coupled to the linkage arm and pivotably coupled to the frame. Moreover, the row unit includes an actuator and a threaded shaft. Furthermore, the row unit includes an actuation arm having a first end defining a cavity receiving at least a portion of a stem of the pivot arm such that the first end directly engages the stem and a second end of coupled to the threaded shaft such that the actuation arm transmits rotation of the threaded shaft into linear motion of the linkage arm.

This document discloses a gauge wheel device (22) for maintaining working depth of a row unit (2) included in an agricultural implement, comprising a gauge wheel arm (220) which, at a distal portion thereof, carries a gauge wheel (221) which is rotatable about a gauge wheel shaft (2201, 220T). An effective length of the carrier arm (220) is variable. The document discloses a row unit comprising such a gauge wheel device, an agricultural implement comprising a plurality of such row units and a method for operating a gauge wheel assembly.

A towed agricultural implement includes one or more processing units each supported on a chassis, in which each chassis supports at least one processing unit on a central axis, the chassis having a left hand side wheel assembly support and a right hand side wheel assembly support, free ends of the wheel assembly supports having wheel assemblies, each wheel assembly comprising a wheel mounted on a wheel mount, the wheel mount being rotatable about an inclined axis, and the wheel being rotatable about a horizontal axis. The wheel assembly supporting structures and the wheel mounts allow limited relative movement of each wheel mount with respect to the wheel assembly supporting structures which enables greater control when the towed agricultural implement is towed about a corner.

Tines (120) of tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110), through the tine plate (110) and through an attachment ring (130). The attachment ring (130) of an outer tine assembly (104) is connected to a sleeve (116) rotatably mounted adjacent the outer ends on each of two independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are rotatably connected adjacent the inner ends of the two independently rotatable shafts (102). The attachment rings (130) of the inner tine assemblies (100a, 100b) are welded to the two independently rotatable shafts (102).

Ground opener units for agricultural seeding machinery and the like utilise a gauge wheel and associated depth adjustment mechanism for regulating the penetration depth of the disk opener in use. An improved gauge wheel adjustment assembly comprises a spindle adapted to be rotatably supported in a spindle sleeve, the spindle having a shaft with a first end with a rectangular boss adapted for engagement with a depth adjustment handle of the disk opener and a second end with a tapered spline engagement formation. A gauge wheel support arm has a complementary tapered spline formation for engagement with the spindle second end.

Tines (120) of tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted adjacent the outer ends on each of two independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are rotatably connected adjacent the inner ends of the two independently rotatable shafts (102). Thus, the outer tine assemblies (104) are located intermediate the inner tine assemblies (100a, 100b) and the outer ends of the two independently rotatable shafts (102).

Tines (120) of tine assemblies (100a, 100b, 104) are secured by a single bolt (126) extending diametrically through each tine (120) located in a cavity (112) of a tine plate (110). An outer tine assembly (104) is connected to a sleeve (116) rotatably mounted adjacent the outer ends on each of two independently rotatable shafts (102) to which inner tine assemblies (100a, 100b) are rotatably connected adjacent the inner ends of the two independently rotatable shafts (102). Thus, the outer tine assemblies (104) are located intermediate the inner tine assemblies (100a, 100b) and the outer ends of the two independently rotatable shafts (102).