| 发明名称 |
METHOD OF MANUFACTURE OF GRAVITY SCREEN SEPARATING CYLINDER |
| 摘要 |
<p>10. A method of manufacture of a gravity head cylindrical seed screen in which the cylinder is first formed by stamping grooves in parallel alignment in a metal sheet, stamping slots along the base of each of the grooves and then rolling the thus worked sheet so that the grooves are in the form of coaxial circular shapes.</p> |
| 申请公布号 |
CA1166606(A) |
申请公布日期 |
1984.05.01 |
| 申请号 |
CA19810391509 |
申请日期 |
1981.12.04 |
| 申请人 |
ALF HANNAFORD & CO. PTY. LTD. |
发明人 |
HORNHARDT, HUBERT L. |
| 分类号 |
B07B1/00;B07B1/22;B21D;B21D35/00;B21D53/00;B30B7/00;(IPC1-7):B07B1/00 |
主分类号 |
B07B1/00 |
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