| 摘要 |
802,707. Chain gearing. MEAD, H. A. July 2, 1956, No. 20380/56. Class 80 (1). [Also in Groups XXII and VIII] Means for permitting limited angular adjustment of two chain-connected sprockets of a bag-making machine (see Group XVII), relative to each other consists of idler pulleys 93-95, the pulleys 95 being carried on a member 96 movable transversely of the chain by means 98-100. Movement of the member 96 alters the lengths of the upper and lower chain runs and thus the relative positions of the sprockets 90, 92. |
