1977-10-03
1978-10-03
Schaefer, Robert K.
58141, G04F 106
Patent
active
041176669
ABSTRACT:
A timer in which a lesser cylinder having funnel-shaped top and bottom portions is disposed within a greater cylinder. Granular material is disposed in the greater cylinder, with a passage or gap provided between the outside diameter of the lesser cylinder and the inside diameter of the greater cylinder so that granular material funneled through the lesser cylinder downwardly to the base of the greater cylinder may be quickly returned at any time by inverting the greater cylinder, thereby allowing another pass of the granular material through the lesser cylinder.
REFERENCES:
patent: 2144857 (1939-01-01), Schultz
patent: 2236658 (1941-04-01), Wheeler
patent: 2252035 (1941-08-01), Rockala
Pojunas, Jr. Leonard W.
Schaefer Robert K.
Schneck, Jr. Thomas
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