Society of Glass Technology · [Sheffield] · leaf 487
C. Harrison, Stoke-on-Trent(Brit. Pat. No. 118800.) (March 5th, 1918, No. 3823).—Amachine for sifting potters slip, powdered substances, etc., consistsof a frame, a, carrying detachable lawn frames or sieves, b, c, d,placed one above the other, and a collecting-box, e, below the lower-most sieve,… … wZm V///////A Fig. 2. and tend to keep it in the vertical position. The detachable sieveframes are fitted with inclined sieves provided with inclined parti-tions, t, to convey the material passing through one sieve to theupper end of the next sieve, and are open at their lower ends.The sieve frames…
Glass
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