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( 2021857 of 2021859 ) |
United States Patent | 3,552,244 |
Smith, Jr. | January 5, 1971 |
Waste sections of sheet material cut with a rotary die are stripped from the sheet material by means which divide the waste section into hinged, connected portions, the hinge lines lying substantially parallel to the axis of rotation of the rotary die. The hinged, connected portions of the waste section are effectively stripped, one after another, by the expelling action of ejection material, e.g. a resilient pad, mounted within the cutting die that cuts out the waste section.
Inventors: | Smith, Jr.; Kilby P. (Brookline, MA) |
Appl. No.: | 04/816,909 |
Filed: | April 17, 1969 |
Current U.S. Class: | 83/863 ; 493/60; 83/103; 83/116; 83/27 |
Current International Class: | B26D 7/18 (20060101); B26d 003/08 (); B31b 001/14 () |
Field of Search: | 93/58,58.1,58.2 83/9,23,27,923,102,103,113,116,117 |
613397 | 1898 | Sanson, Jr. |
3270602 | 1966 | Kirby et al. |
3479931 | 1969 | Bishop |
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