Cutting – Processes – Plural cutting steps
Patent
1975-03-12
1976-10-19
Schran, Donald R.
Cutting
Processes
Plural cutting steps
83 49, 83628, B26D 310
Patent
active
039864189
ABSTRACT:
A system for making cutouts and angular cuts in stepped siding uses a punch to remove, at the desired cut location, a rectangular section including the step and a small portion of both faces adjacent the step. The punch operates in a shearing manner with cutting surfaces progressively contacting the siding as the punch is moved into the die. Final cuts of the siding are made with cutters which do not require support of the stepped portion of the siding.
REFERENCES:
patent: 795628 (1905-07-01), Lewis
patent: 874515 (1907-12-01), Lorenz
patent: 2233000 (1941-02-01), Chesley
Lang John F.
Wilshire, Jr. Robert A.
Helm Rea C.
Schran Donald R.
United States Steel Corporation
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