Classifying – separating – and assorting solids – Sifting – Elements
Patent
1975-03-19
1976-05-18
Halper, Robert
Classifying, separating, and assorting solids
Sifting
Elements
209288, 209370, 209385, B07B 122
Patent
active
039576310
ABSTRACT:
A portable screening apparatus comprises a base assembly having a two wheel assembly associated therewith. A shaft is journaled through a block member affixed onto the base assembly, wherein a handle member is affixed onto the outer end of the shaft. A frusto-conical drum has a top cover, a bottom base, and an annular sidewall, wherein the sidewall has a plurality of openings therethrough. The top end of the drum rotatably communicates with the base assembly. A bracket member is affixed onto an outside surface of the bottom base of the drum, wherein the forward end of the shaft is mounted into the bracket member. A frusto-conical shaped screen member is contained within the drum.
REFERENCES:
patent: 829665 (1906-08-01), McCollum
patent: 901519 (1908-10-01), Burke
patent: 1069244 (1913-08-01), Ford
patent: 3426898 (1969-02-01), Cruickshank
Halper Robert
Lawrence Peska Associates Inc.
Nanfeldt Richard E.
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