A coupler for securing an attachment to an earth working machine. The coupler comprises a coupler body that presents a receptacle having a capture region. A pin of an attachment can move into and out of the capture region. A retainer can capture the pin in the capture region but the retainer can be moved by a hydraulically driven driver to a position to allow release the pin from the capture region. A trigger that the pin will strike when the pin moves into or out of the capture region, decouples the driver from the retainer and the retainer is then allowed to be biased back to its retaining position by a spring.

A universal tractor implement frame for attaching to the three point hitch or drawbar of a tractor including two longitudinal beams, two transverse struts arranged between and perpendicular to the two longitudinal beams, and two longitudinal stabilizers. Forward and Rear sets of frame legs are attached to the forward and rear struts, respectively and are configured to connect at their distal ends to the upper link of the tractor's three point hitch or drawbar. Connection plates are attached to the forward strut for connecting to the two lower links of the tractor's three point hitch or stabilizers. Various working tools may be attached to the beams, stabilizers, and/or to the struts of the universal frame for carrying out the work of prior art tractor implements.

A three-point hitch for an agricultural tractor includes a hydraulically actuatable lifting arm, a vertically pivotable lower link, and a lifting strut arranged between the lifting arm and the lower link. The lifting strut transmits to the lower link a pivoting movement on the lifting arm. The lifting strut includes a first fastening portion articulated to the lifting arm and a second fastening portion articulated to the lower link. The second fastening portion includes first and second fastening segments which encompass the lower link in a fork-shaped manner. A bearing pin disposed between the two fastening segments extends through a slot formed in the lower link. By pivoting the lower link, the bearing pin is displaced inside the slot between a first working position and a second working position. In each position, the bearing pin is secured inside the slot by a blocking arrangement.

The invention relates to an implement coupling device (1) on a working machine (2), which device comprises a coupling means (11) provided with a first shaft (21); an engagement means (12) provided with a second shaft (22) arranged parallel to the first shaft (21); at least one linkage (13, 14) comprising a first portion (23, 24) connected to the first shaft (21) and second portion (25, 26) connected to the second shaft (22), which first and second portions are connected by a pivot joint (27); and a wedge (28) means arranged to be removably mounted between the first and second portions (23, 24; 25, 26), wherein the coupling means (11) and the engagement means (12) are displaceable relative to each other in a direction at right angles to the first and second shafts (21, 22) to attach or release the implement. At least one portion (23, 24; 25, 26) making up a linkage (13, 14) is detachably fixed to its respective shaft (21, 22) by a locking means (31, 32, 33, 34) in a longitudinal recess (41, 42, 43, 44) at right angles to the shaft (21, 22) and engaging with a tangential recess (51, 51′, 51″) in the outer surface of the shaft (21, 22).

A coupling device, particularly for power-operated machines for agricultural use or the like, includes an oscillating frame which is detachably connected to a hitch assembly of an engine and a movable connection means for associating with the oscillating frame the working means of a power-operated machine. The oscillating frame and the movable connecting means are configured to maintain, during use, the working plane of the power-operated machine substantially parallel to the ground, independently of the plane of arrangement of the wheels or of the tracks of the engine.

A coupling device, particularly for power-operated machines for agricultural use or the like, includes an oscillating frame which is detachably connected to a hitch assembly of an engine and a movable connection means for associating with the oscillating frame the working means of a power-operated machine. The oscillating frame and the movable connecting means are configured to maintain, during use, the working plane of the power-operated machine substantially parallel to the ground, independently of the plane of arrangement of the wheels or of the tracks of the engine.

A power hoist equipment crane system to be used with a tractor roll bar, the system including a pivotable support bar configured to be substantially U-shaped having two side portions and a middle portion connecting the two side portions, a cable support member provided to the pivotable support bar and configured to support a cable from a hoist, and bracket assemblies provided respectively proximate each end of the pivotable support bar and configured to couple the pivotable support bar to the tractor roll bar in a pivoting arrangement, the bracket assemblies configured such that the pivotable support bar is pivotable between a substantially vertical stowed position when not in use, and a substantially horizontal use position in which the cable support member is positioned at a point spaced back from the tractor so as to be located over an implement that is attachable to the tractor.

A power hoist equipment crane system to be used with a tractor roll bar, the system including a pivotable support bar configured to be substantially U-shaped having two side portions and a middle portion connecting the two side portions, a cable support member provided to the pivotable support bar and configured to support a cable from a hoist, and bracket assemblies provided respectively proximate each end of the pivotable support bar and configured to couple the pivotable support bar to the tractor roll bar in a pivoting arrangement, the bracket assemblies configured such that the pivotable support bar is pivotable between a substantially vertical stowed position when not in use, and a substantially horizontal use position in which the cable support member is positioned at a point spaced back from the tractor so as to be located over an implement that is attachable to the tractor.

In a combine harvester, the header (1) is lifted up by the feeder (8) and secured thereto by a mechanism including a pair of securing pins (23) on the feeder's carrier structure (20,21). The securing pins are provided with stops (35) protruding towards the header and which include a sloped surface, configured to interact with positioning aids (39) on the header. The lateral outward or inward movement of the securing pins (23) is driven by a centrally placed actuator (24). As the actuator is extended, the positioning aids (39) roll or glide down the sloped surfaces, enabling a gradual approach of the header towards the feeder, up to a point where the securing pins (23) become aligned with slots (50) on the header. Continued actuation of the pin motion then establishes the securing of the header to the feeder.

A link assembly for a hitch includes a first link and a second link. The second link has first and second spaced apart bores extending therethrough. A coupling member is attached to an end of the first link. The coupling member includes first and second spaced apart coupling plates. The coupling member has a load bore extending through the first and second coupling plates and has a plurality of index bores extending through the first and second coupling plates. A load pin is receivable by the load bore and the first bore, and pivotally couples the second link to the first link. An index pin is removably receivable by the second bore and a selected index bore, and the index pin is movable independently of the load pin.