| 摘要 |
996,850. Artificial ski-slopes. SKI-DEK CORPORATION. Nov. 13, 1962 [Nov. 14, 1961], No. 42875/62. Heading A6D. An artificial ski-slope comprises an endless belt 16 of material such as nylon pile fabric entrained over rollers 14 and 15, the former being driven from a prime mover 19, means being provided for correcting any lateral displacement of the belt relative to the rollers, resulting from manoeuvres executed by skiers on the slope. The correction is effected by means of auxiliary endless belts 35 entrained in grooves 36 formed in the roller 15 and over grooved pulleys which are supported from the frame of the slope so as to be laterally displaceable relative thereto, the pulleys being connected to displaceable feeler rollers 48 located on opposite sides of the lower run of the belt 16. Thus displacement of the belt 16 results in displacement of the belts 35, so that the latter are fed to their respective grooves 36 at an angle and tend to rise out of the grooves. The weight of the belt 16, however, forces the auxiliary belts back into their grooves, the sloping sides of the grooves causing simultaneous lateral displacement of the auxiliary belts, and the coefficient of friction between the belts 16 and 35 is arranged to be such that the belt 16 is also moved laterally, thereby gradually correcting its original displacement. When the correction is completed, the feeler rollers 48 and grooved pulleys resume their normal positions and the belts 35 resume their movement parallel to the direction of movement of the belt 16 and are located within the grooves 36. |
