Title:
Apparatus for making tapered metal blanks for key brick cases
United States Patent 3085458
Inventors:
Platt, Richard O.
Lloyd, Thomas W.
Publication Date:
04/16/1963
Export Citation:
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Assignee:
Harbison, Walker Refractories
Primary Class:
83/240
Other Classes:
83/255, 83/550, 83/572, 83/683, 83/917
International Classes:
B21D51/10; B21D51/00
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US Patent References:
2920521Variable angle strip cutting machine
2767789Oscillating shear for cutting trapezoidal shapes
2576328Punch press
2219908Perforator
1882451Punch press
1880935Blank cutting machine
1640466Web notching and blanking mechanism for outside covers
0874515N/A
0566054N/A