| 摘要 |
1298625 Agricultural implement H VISSERS NV 23 Jan 1970 [3 Feb 1969] 3409/70 Headings A1B and A1F [Also in Division B3] An agricultural implement e.g. a harrow, rake, beet-lifting machine, digging machine having clod ejectors or similar implement having a hollow beam 22 with at least one projecting working tool e.g tines 2 mounted thereon, is constructed so that the tine is bolted through the hollow harrow beam 22. A bush 30 is held in place inside the beam by turned-in edges 28 of the holes in opposite walls of the beam. In Fig. 6 the crank 51 is driven so that the two beams 22 are oscillated longitudinally in opposite directions. The process of punching the holes in the beams turning over edges 28, and countersinking the holes is performed in a single operation (see Division B3). |
