Patent GB-684802-A (GB)
Title: Improvements in sheep's foot rolls for soil-compacting rollers
IPC: E02D3/026
Filed: 1950-12-13
Abstract: 684,802. Soil-compacting rollers. SOC. ANON. DES ANCIENS ETABLISSEMENTS ALBARET. Dec. 13, 1950 [Feb. 22, 1950; Aug. 17, 1950 ] . No. 30473/50. Class 6 (i). A sheep's foot roller has feet consisting of radial projections of various lengths and .sections on multi-branch compacting members carried on the periphery of the roll and adjustable in direction. The sheep's foot roll has a hub 1 with end flanges 2, 3 carrying side-plates 4, 5 held apart by brace members 6 and connected at the periphery by bars 7 carrying compacting members, Figs. 2 and 3. Each bar has end-bearing surfaces 8, 9 journalled in bearings 10, 11. From the bearing 11 projects a boss 12 partly surrounding a ring 13 keyed to a bearing surface of the bar 7 and locked by a nut on the square-cut end 16 of the bar. The ring 13 has notches 17 so that a locking pin 19 can be inserted in a socket in the boss 12, when a notch 17 coincides with the socket. The pin 19 has flattened surfaces 20 and a groove engaging a spring-pressed ball 22 housed in the boss. The compacting members have a central hub 26 from which projects a short branch 27 with a wide end 28 and a long branch 29 with a narrow end 30. The long branch 29 has a curved' rolling surface 32. Three compacting members are keyed or welded on the bar, the members on one bar being staggered relative to the members on the next adjacent bar. The bars are adjusted by removing. the pins 19 and turning each bar by means of a key applied to the square end 16, to give three different patterns of imprints.. The rollers are mounted on a welded steel beam 33 at each end of which is a towing ring 35, Fig. 6. At the middle of the beam, fixed in a support 36, is a cross-shaft 37 forming the axle of two rolls arranged one on each side of the beam. A crossbeam 38 may be welded under the towbeam 33 to carry flat iron scrapers 39 aligned between the compacting feet. The rollers may also be used in a power-driven machine. In the travelling position the bars are adjusted so that the surfaces 32 form a continuous rolling surface. In a. modification, Figs. 9, 10, the feet are carried by bars having a groove 40 at each end outside the bearing surfaces 8, 9 which are housed in notches in the side plates 4, 5. A reinforcement 42 may be welded to the inner face of the side plates, cables 43 passing over the grooves 40 to hold the bars in position. The ends of the cables are fixed in cramps 44, 45 and are tensioned by means of grooved wheels 46 journalled in forked rods 48 sliding in bosses 49 welded on the side-plates. The rods are cushioned by elastic washers 50 bearing against the inner face of each boss. A hand-tensioning device is also provided and consists of a wheel 52 bearing against the cable, the wheel being mounted in a forked member 53 journalled on a levercontrolled eccentric. The eccentric consists of a member 54 welded to a lever 55 the member 54 bearing against the cylindrical surface of a projection from the side plate. On each bar is a flat key 58 by which the bar can be adjusted, the free end of each key being engaged between studs 59 placed intermediate the periphery of the side plate and its centre. The keys are secured by passing the links of bent pins of spring steel through openings in the studs.