| 摘要 |
The present invention suggests a novel form of dispenser apparatus that can be "rigidly" attached to a tractor's (con- ventional) three-point mounting. More specifically, the invention proposes a long beam (34), or framework of beams, having roughly centrally thereof a three-point mounting (39) by which it can be attached behind a tractor (32) clear of the ground, the beam (34) having normally-disposed end plates (35) between which there may be borne a support rod (26) carrying a roll (27) of liner material. In the preferred case the beam (34) is associated with positioning control means that can be used to adjust the lateral angle of the lower three-point mounting linkages, and so move the roll (27) to either side to modify where the liner is laid.
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