Method and apparatus for detecting timber defects

Details Method and apparatus for detecting timber defects Method and apparatus for detecting timber defects

1975-01-16

1976-08-24

McGraw, Vincent P.

Optics: measuring and testing

Inspection of flaws or impurities

Bore inspection

83365, 250563, 250572, 356237, 356239, G01N 2116

Patent

active

039763846

ABSTRACT:
Apparatus for detecting knots and the like in swan or planed timber comprising means for injecting light into the surface of the timber and means for detecting light emerging from the timber at a location spaced apart from the point or region of injection, a defect such as a knot in the timber, being indicated in dependence upon the amplitude or presence of the light emerging from the timber.

REFERENCES:
patent: 3165961 (1965-01-01), Hammond
patent: 3694658 (1972-09-01), Watson et al.
patent: 3760667 (1973-09-01), Maxey et al.

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