Length measuring instrument for paper fibres

G - Physics – 01 – B

Patent

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G01B 11/00 (2006.01) G01B 11/02 (2006.01) G01N 15/02 (2006.01) G01N 33/34 (2006.01)

Patent

CA 1176839

ABSTRACT OF DISCLOSURE A paper fibre length measuring instrument, comprising a capillary tube, through which the fibres to be measured, in a liquid, are passed, and having on one side of the capillary tube a light source and on the opposite side of the capillary tube a photocell from the results of which the lengths of the fibres are determinable. The photocell comprises a diode matrix of which the diodes calculate the fibre length from the image of the passing fibre.

410147

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