Cutting – With illuminating or viewing means for work – Mirror or lens
Patent
1982-01-18
1985-03-12
Bell, Paul A.
Cutting
With illuminating or viewing means for work
Mirror or lens
83520, 83522, B26D 700, B26D 520, B26D 727
Patent
active
045037400
ABSTRACT:
An optical cutting edge locator for a cutting machine having a knife for cutting single or multiple sheets of material comprises a light source, a light-projecting system above the knife for downwardly projecting a beam of light from the light source along a planar surface of the knife generally perpendicular to the material, thereby to cause a shadow to be cast by the cutting edge of the knife and to create a line between a shadow area and a light area on the material in substantially the same plane as the cutting edge. The light-projecting system includes either a plurality of fiber optic transmission lines having light-emitting ends mounted above the knife or an elongated slot above the knife. The plane of the planar surface of the knife generally bisects either the light-emitting ends of the fiber optic transmission lines or the elongated slot so that the beam of light being downwardly projected is split by the planar surface of the knife.
REFERENCES:
patent: 1804764 (1931-05-01), Grant
patent: 2806492 (1957-09-01), Becker
patent: 3205738 (1965-09-01), Ballmer et al.
patent: 3656391 (1972-04-01), Arx
patent: 4059475 (1977-11-01), Gernhardt et al.
patent: 4257297 (1981-03-01), Midbella
Brand Robert D.
Runyan Ralph D.
Bell Paul A.
Capital Machine Company, Inc.
Heyrana Sr. Paul M.
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