| 摘要 |
916,307. Toothed gearing. WALLACE & TIERNAN Inc. July 7, 1961 [July 8, 1960], No. 24675/61. Class 80 (1). [Also in Groups XXVI and XXVIII] Backlash between a worm-wheel 35, Fig. 4, forming part of an eccentric (see Group XXVI) and its driving worm 34 is controlled by vertical and horizontal adjustment of the worm relative to the worm-wheel. A pair of shafts 86 are mounted by means of concentric cylindrical portions 89 in cylindrical holes in the eccentric housing 30 andare formed with eccentric cylindrical end portions 87 which engage in corresponding holes 84,85, Fig. 14, in caps 80 secured to the housing 30 by screws 82 and carrying bearings 36 supporting the worm shaft 12. With the screws 82 slackened adjustment of the worm is effected by rotating the shafts 86 by means of a screwdriver inserted in a groove 88 at the end of each shaft. |
