| 摘要 |
In the cutting of material to sever a first part thereof from second part thereof along a path in the material, the steps of A. OFFSETTING BY SHEARING SAID FIRST PART FROM SAID SECOND PART ALONG WITH SAID PATH, TO ONLY PARTIALLY CUT SAID FIRST PART FROM SAID SECOND PART, AND TO DISPLACE SAID FIRST PART IN ELEVATION FROM SAID SECOND PART, AND THEREAFTER B. CUTTING SAID FIRST PART FROM SAID SECOND PART TO SEVER THE FIRST AND SECOND PARTS BY SHEARING ALONG SAID PATH TO DISPLACE SAID FIRST PART IN ELEVATION FROM THE SECOND PART IN THE DIRECTION OPPOSITE TO THE DISPLACEMENT OF SAID FIRST AND SECOND PARTS EFFECTED IN STEP (A).
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