Method and apparatus for determining the average fineness of loo

Details Method and apparatus for determining the average fineness of loo Method and apparatus for determining the average fineness of loo

1988-10-04

1990-01-09

Myracle, Jerry W.

Measuring and testing

With fluid pressure

Porosity or permeability

73823, G01N 1508

Patent

active

048919675

ABSTRACT:
Instead of a measuring chamber with a fixed volume, the present chamber is formed as a cylinder (12) with a piston (3) movable therein. The piston is pressed against the fibre sample (29) with constant compression force, and the respective volume of the measuring chamber is determined individually from the final position of the piston. Then an air stream is conducted through the fibre plug, the effect of the air stream together with the volume of the chamber allowing conclusions to be drawn regarding the fibre fineness. The displaceable piston ensures constant sealing of the fibre sample and makes precise metering of the fibre sample superfluous.

REFERENCES:
patent: 2706904 (1955-04-01), Hertel
patent: 2919573 (1960-01-01), Berkley et al.
patent: 3111836 (1963-11-01), Emmons, III

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