发明名称 Method of making an earth tilling sweep from disc scrap
摘要 A method of making earth tilling sweeps from disc scrap including a process of cutting a plurality of circular discs side-by-side to form disc cut-outs as well as discs. Each cut-out is formed around an axis which is perpendicular to the plane of the sheet of metal from which the discs are cut. The method herein includes leaving a predetermined width of material between the disc cut-outs and a predetermined width of metal between each respective disc cut-outs on at least one of the side edges. A sweep blank is made by cutting between and through the width of metal between the cut-outs and between the one edge and each one of two adjacent cut-outs. Further cutting of the sweep blank toward its final configuration includes forming attachment openings therein. The sweep blank is then bent into a three-dimensional shape for use in tilling the earth.
申请公布号 US6119321(A) 申请公布日期 2000.09.19
申请号 US19990378951 申请日期 1999.08.23
申请人 BRUCE, DOUGLAS G. 发明人 BRUCE, DOUGLAS G.
分类号 A01B35/22;A01B35/26;B21D53/66;B21K11/12;(IPC1-7):B21H7/06;B21K19/02 主分类号 A01B35/22
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