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    • 1. 发明专利
    • Improvements in or relating to loaders for agricultural purposes
    • GB949514A
    • 1964-02-12
    • GB2590961
    • 1961-07-18
    • STEPHEN HARRISON
    • A01D87/12
    • 949,514. Portable elevators. S. HARRISON. Oct. 10, 1962 [July 18, 1961; Jan. 30, 1962], Nos. 25909/61 and 3891/62. Heading B8A. An agricultural loader comprises a conveying structure, supporting an endless conveyer 14, mounted at its rear end on a tractor threepoint lifting linkage 29 (itself comprising two lower links 28 and an upper link 32, Fig. 9) so as to extend longitudinally of the tractor 26. With the front end of the structure resting on skids 57 on the ground, bales (not shown) may be lifted by the conveyer 14 to fall down a shoot 45 into a trailer 66 attached to the tractor 26, the conveyer 14 being driven from the tractor power-take-off 34. The front end of the conveyer may be lifted about a pivot tube 24 by an elevating arm 49 actuated by an hydraulic ram 52 on the tractor 26 so that, by reversing the direction of the conveyer 14, the loader may be used to unload bales from the trailer 66 to a stack (not shown). The tractor three-point lifting linkage 29 may be used to adjust the height of the rear end of the conveyer 14 conveniently.