| 摘要 |
972,906. Reclaiming material from piles. HEWITT-ROBINS INTERNATIONAL S.A. May 20, 1963 [May 29, 1962], No. 19990/63. Heading B8E. [Also in Division E1] In a bucket wheel digger a bucket wheel 60 and a harrow 86 pivotally mounted at 71 on a vertically swingable, bucket wheel-supporting boom 56 are so associated by swingable linkage 82 and fixed structure 62 of the digger that the harrow maintains a selected inclination to the horizontal during vertical swinging of the boom. The harrow may involve a reciprocable tine or toothed endless belt respectively supported from or about a girder beam. |
