GB1386631A - Rotary mower - Google Patents

Abstract

1386631 Mowers MASCHINENFABRIK FAHR A G 22 Feb 1972 [5 March 1971] 8074/72 Heading A1F A rotary mower adapted to be drawn behind a tractor comprises cutting rotors 7 behind which are mounted swath forming swath drums 11 which may be freely rotatable, or driven by belts. Guide plates 16 deflect the cut crop from the rotors 7 to the swath drums 11. The disposition of swath drums 11 and guide plates 16 determines the number of swathes produced. The guide plates 16 are pivotally mounted so that they can be swung upwards to clear blockages. Each swath drum 11 is mounted on a support arm 10 pivotable in a parallelogram frame 2 or 3, and the cutting rotors 7 and swath drums 11 can be lifted for transport (Fig. 6) by means of hydraulic cylinders 14 connected between the parallelogram frames 2, 3 and the frame of the mower, the swath drum being then swung into the free space between cutting rotor and frame. A member 15 of adjustable length adjusts the cutting rotors 7 relative to the soil. An anternative form of swath drum is the drum 17 shown in Figure 7; it comprises rods 18 fixed in an upper annular member 19, and passing freely through bores in a lower annular member 20, which construction makes the ends of the rods in effect spring mounted tines. In use some of these tines are in contact with the ground, which therefore drives the drum. The tine ends of the rods 18 may instead point inwards (Figure 8, not shown). The guide plates 16 may be replaced as deflecting means by conveyor belts mounted on pulleys, and either freely rotatable or driven. Alternatively the belts used to drive the swath drums may serve as deflecting means. Reference has been directed by the comptroller to Specification 1174728.