发明名称 Bridge and die attachment for cutting torches
摘要 An accessory for facilitating the accurate cutting of holes with a cutting torch. A die is attached to the workpiece by legs and presents a die opening which controls the size and shape of the hole. A bridge piece fits against the die and maintains the cutting torch tip perpendicular to the surface of the workpiece as the torch is guided around the edge of the die opening to form the hole.
申请公布号 US4319933(A) 申请公布日期 1982.03.16
申请号 US19800189761 申请日期 1980.09.23
申请人 SHOESMITH, JR., ROLLO 发明人 SHOESMITH, JR., ROLLO
分类号 B23K7/10;(IPC1-7):B23K7/10 主分类号 B23K7/10
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