| 摘要 |
983,302. Combine-harvesters. MASSEYFERGUSON SERVICES N.V. June 21, 1961 [July 6, 1960] No. 22360/61. Heading A1F. [Also in Division F2] A variable-speed transmission for driving a component of a combine harvesterthresher comprises a variable diameter pulley (not shown) driving through a belt 47 a variable diameter pulley having flanges 86, 87 urged together by a spring and fast in rotation with a stub shaft 75 which is adjustable about an output shaft 70 to adjust the belt 47. The stub shaft 75 drives the output shaft 70 through a twospeed gear comprising a pinion 76 slideably splined on the shaft 75 and selectively meshing a ring gear 72 fast with the shaft 70 to give a low ratio range and meshing, through an idler (not shown) a pinion 73 on the shaft 70 to give a higher ratio range. The pulley 86, 87 is adjusted around the shaft 70 by mounting the stub shaft 75 in a housing 74 which is fitted in a circular track formed in a wall portion 71 of the harvester in which the shaft 70 is rotatably supported. The housing 74 can be adjusted in its track by a screw arrangement and clamped to the wall 71 in the selected position. |
