| 摘要 |
504,469. Changing gauge of wheels. STANHAY, Ltd., and WRIGHT, H. E. Nov. 2, 1937, No. 29992. [Class 108 (ii)] The driving axle 4 of a tractor carries an externally screwed cylinder 1 engaging an internal screw in the hub 8 of the wheel, the wheel being fixed on the axle by two keys 12 spaced 120‹ apart. To change the gauge, the keys 12 are removed by extractor bolts 13 and the axle rotated, the provision of three key-ways on the cylinder 1 allowing of fine adjustment.
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