Abstract: A bottom blade for a grass cutting unit is formed by bending a low carbon steel mounting plate to form a lip; welding to the lip a thin wear strip of high carbon steel and further bending the mounting plate to produce the required lip height.

Abstract: A grass cutting unit with a reel rotatably mounted between side plates has bearing assemblies which extend inwardly of the side plates and a reel shaft shorter than the separation of the side plates. After removing one bearing assembly, the reel can be withdrawn transversely for maintenance. There is no necessity for open-ended slots in the side plates. A drive assembly is demountable as a unit with one bearing assembly. The opposite bearing assembly incorporates a spring loaded plunger to pre-load taper roller bearings in both assemblies.

Abstract: A grass cutting unit has a height of cut determined by a ground roll. A reaction member linked to the ground roll has a captive screw-threaded shaft carrying a hand wheel. A block threaded onto the shaft is linked to the frame of the cutting unit so that rotation of the hand wheel adjusts the height of cut. The weight of the frame is arranged to act on the hand wheel, to urge together contoured surfaces of the hand wheel and the reaction member so as, during normal cutting, to prevent spurious rotation of the hand wheel.

Abstract: A grass cutting unit with a conventional cutter reel has forward and rear rollers mounted on a common, pivotable, carriage. By adjustable pivoting of this carriage the height of cut can be adjusted while maintaining strict parallelism between the rollers. A knife or groomer roller is cantilevered in front of the forward roller and is supported on the common roller carriage.

Abstract: A reversible plough has a headstock formed from upper and lower parts hingedly connected about a transverse axis, the reversing spindle being mounted in the lower headstock part and carrying a crank arm connected by a link to the upper headstock part. As the reversing spindle is rotated, relative hinging movement between the two headstock parts causes the reversing spindle to tilt in a vertical plane, the load in said link counterbalancing to a degree the offset center of gravity of the plough frame and reducing the torque required to reverse the plough frame. The plough frame carries left handed and right handed plough bodies and the center of gravity of the plow frame is laterally offset from the longitudinal axis of the reversing spindle.

Abstract: A reversible plough comprises a frame member, at least one support member pivotally mounted on the frame member and two cranked plough legs pivotally mounted on the support member, and biassed toward their operative positions, in which during normal ploughing operations the support member is held in its operative position, but when an obstacle is encountered by the plough body and the working plough leg deflected, the support member is permitted to rotate relative to the frame member.

Abstract: A reversible plough has a headstock, a plough frame and a reversing spindle secured to the frame and rotatable in the headstock. A stop member rotatable about the reversing spindle is provided with two adjustable stops to enable the two ploughing positions of the plough frame to be preset relative to the headstock. To reverse the plough frame from one ploughing position to the other, the spindle and thus the plough frame is rotated by a hydraulic ram and an abutment on the spindle engages the stop member to cause said member to rotate with the spindle until the corresponding stop engages the headstock to locate the spindle and hence the plough frame in the other ploughing position.

Abstract: In a mowing machine of the kind comprising a frame adapted to be mounted on a tractor three-point linkage, and a plurality of cutting units connected to the frame, including at least two laterally spaced side cutting units and a center cutting unit positioned so as, in use, to cut the swath between the two swaths cut by the side cutting units, the side cutting units are mounted directly on the frame, so that in use part of the weight of the frame is supported by the side cutting units, and the center cutting unit is mounted at the rear end of a mounting arm connected to the frame by a universal joint, biasing springs being connected between the frame and the mounting arm to increase the pressure exerted on the ground by the center cutting unit so that it takes some of the weight of the frame from the side units and ensures uniformity of cut. The universal joint between mounting arm and frame also allows the center unit to take the optimum line when the machine follows a curved path.

Abstract: A vehicle steering mechanism for steering two ground engaging wheels of an industrial vehicle, comprises for each ground engaging wheel, an upright shaft rotation of which effects rotation of the associated ground engaging wheel, a track rod system connected with each upright shaft and including an arm mounted on the axle casing and rotatable about an upright axis and first and second complementary co-operating reduction drive elements of which the first element is rotatable about the same axis as the arm and upon rotational movement about that axis of the arm whilst the second element is mounted upon the corresponding upright shaft to effect rotation of that shaft upon rotational movement about its axis of the arm, and, link means 50 interconnecting the arm of each track rod system as to cause on rotation of the arms about their respective axes a differential rotation of the upright shafts and therefore, in operation, of the ground engaging wheels to an extent such that as the arms rotate from a position in

Abstract: In a reach truck there is provided a frame including a pair of parallel guides, a mast supported on and movable along the guides and mechanism for extending and retracting the mast along the guides, said mechanism comprising a lever depending from and rotatable about a horizontally disposed pivotal axis fixed relatively to and located on an upper part of the frame, means for rotating the lever about its pivotal axis, and, a link pivotally connected with the mast and with the lever at a substantial distance from the horizontally disposed pivotal axis thereof and on the side of said pivotal axis remote from the mast so that, on rotation of the lever, the link applies a force to the mast having a substantial component in the horizontal direction.

Abstract: A self-propelled grass mower machine has a laterally projecting helically bladed cutter, a driving motor for effecting propulsion of the machine and driving of the cutter reel and transmission means for driving the cutter reel from the motor, the transmission means including a driven member, a transversely disposed driven shaft and universal couplings connecting respective opposite ends of the driven shaft to the reel and, adjacent the side of the machine remote from the reel to said driven member of the transmission means, the axes of the shaft and the reel being mutually inclined at a large obtuse angle.

Abstract: A speed control mechanism for controlling the supply of driving power to traction means of a vehicle, comprising a single control member operable by the driver of the vehicle and movable continuously over a range of positions thereby to vary the speed of the traction means or the supply of power to the traction means. A selector device which can be set by the driver to a number of positions in each of which the device acts to limit the range of movement of the control member thereby to limit the range over which the speed of the traction means can be varied, or the range of power which can be supplied to the traction means, in response to movement of the control member.