Method and apparatus for determining the size distribution of to

Details Method and apparatus for determining the size distribution of to Method and apparatus for determining the size distribution of to

1983-01-10

1986-03-04

Miller, Edward A.

Classifying, separating, and assorting solids

Sifting

Special applications

209289, 131312, B07B 100

Patent

active

H00000310

ABSTRACT:
Tobacco is graded by size by separating a sample into size fractions using a rotary drum screen. The sample is characterized by two distribution curves, one for a finer portion and the other for a coarser portion. The crossing point of logarithmic plots of the percentage by weight vs. particle size distributions of the two portions provides a precise and sensitive descriptor, which can be termed as a "percent desirable fraction," for grading the size characteristics of threshed or cut tobacco.

REFERENCES:
patent: 1771996 (1930-08-01), Chapman
patent: 2274891 (1942-03-01), Dysthe
patent: 2782926 (1957-02-01), Saxe
patent: 3401701 (1968-09-01), Pietrucci
patent: 3545281 (1968-12-01), Johnston
patent: 4233996 (1980-11-01), Brackmann et al.

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