GB565658A - An improved weed or grass cutting attachment for use with agricultural tractors and other vehicles - Google Patents

Abstract

565,658. Grass and weed cutting machines. ROADS, H. C. May 21, 1943, No. 8095. [Class 6 (ii)] A grass or weed cutting appliance for attachment to a vehicle comprises a frame mounted for angular movement in a vertical plane about a support either on the tractor or on a wheeled element, means adjustably connecting the frame to the vehicle to enable the frame to be adjusted about its pivot, a rotary cutter element on the frame comprising plurality of wires or blades, and a U-shaped member which depends from the frame and which co-operates with the wires or blades to cut the grass or weeds. In the construction shown, the cutting element is rotatably mounted in side bars 1, the forward ends of which are connected by pins 2 to the draw-plate 3 of the tractor 4. The inclination of the bars and thus of the height of the cutter can be adjusted by tie bars 5 which are connected to the bars and to the differential housing 8 of the tractor. The required adjustment is effected by providing a series of holes 6, as shown, for the connection of the tie bars to the housing 8, or alternatively by a worm- and-nut device, or by forming each tie bar in two overlapping sections connected by bolts passing through selected holes of a series of bolt holes. The cutting element consists of end rings 14 connected by spokes to a shaft driven by a chain 11 from the chain wheel 12, bolted to the spokes on the outside of the land wheels 13 of the tractor, the rings being spanned by thin cutting blades 17 or by steel wires. These blades or wires co-operate with a bar 18 to cut the weeds or grass. In a modification, Figs. 3 and 4 (not shown), a draw bar is connected to the draw-plate of the tractor and at its rear end to an axle carrying supporting wheels for the framework of the cutting element. The framework extends both to the front and to the rear of the axle, the rear end carrying the cutting element and the forward end having a depending plate having a series of holes for selective connection with the draw bar. The bar 18 may be pivotally mounted and may yield under the action of a spring when bulky or tough material is encountered.