Classifying – separating – and assorting solids – Sifting – Drum sifters
Patent
1980-02-14
1981-04-28
Cuchlinski, Jr., William A.
Classifying, separating, and assorting solids
Sifting
Drum sifters
209270, 209288, 209301, 209302, 209303, 209305, 209407, 21049701, 291635F, B07B 118, B01D 3306
Patent
active
042644380
ABSTRACT:
A screen drum and a method for its manufacture is disclosed wherein the screen drum comprises at least two cylindrical screen members spaced apart, between which a stiffening ring is disposed. The stiffening ring has two cylindrical surfaces which guide the ends of the cylindrical screen members, and a projecting part between them. The cylindrical screen members and the stiffening ring are attached to each other by a weld joint connecting the projecting part of the stiffening ring and the ends of the cylindrical screen members and filling the gap between them.
REFERENCES:
patent: 826193 (1906-07-01), Reinicke
patent: 959979 (1910-05-01), Webb et al.
patent: 2204835 (1940-06-01), Traylor
patent: 2347716 (1944-05-01), Staege
patent: 3631981 (1972-01-01), Young
patent: 4017387 (1977-04-01), Hatton et al.
A. Ahlstrom Osakeyhtio
Cuchlinski Jr. William A.
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