GB757649A - Improvements in self-propelled ground working and clearing machines - Google Patents

Abstract

757,649. Agricultural implements. DENTON, M. G. May 27,1954, No. 15754/54. Class 6 (1). A self-propelled ground-working implement comprising a plurality of interconnected rollers 11, 12 with circumferential blades 13 is characterized in the absence of any driving wheels, the tractive effort being applied solely through the blades. In Fig. 1 the motor 27 is carried on a platform attached to the frame 17 of the forward roller 11 and drives both rollers through a clutch 26, a differential gear-box 24 and bevel gears 21, 34, each transmission being provided with a brake 31, 39 operable by a driver on a seat 29 to steer the device. The frames 17, 41 are connected together by a pivoted link 9 and by a chain 43 partially embracing the frame 17 and connected to opposite corners of the frame 41. Movement of a lever 441 having a sprocket connection with the chain 43 angles the two frames relatively. In a modification (Fig. 4) the rollers 74, 75 are conical and are mounted in a single frame 73. The motor 90 is carried on a trailer 91 and drives the rollers through a fluid transmission 89, 103 to hydraulic motors 84, 88 on the frame. One end of each roller axle 77 is mounted in a pivoted bearing 86 on the frame and the other end is carried by a bearing 78 attached to the piston of an hydraulic cylinder 80 connected by conduits 82 to the hydraulic motor 89. Valves 97, 101 adjacent to the operator's seat 96 are operable to control the rotation of the cylinders and their mutual inclination and another valve 95 controls a cylinder 93 which adjusts the angularity between the frame 73 and trailer 91 for steering. In other modifications, the controlling and driving means is electric, the trailer is mounted between two roller frames, and a gang of roller frames is provided arranged in echelon and actuated in unison by hydraulic motors Specification 657,414 is referred to.