Animal husbandry – Entomological culture device – Egg treatment – production – or storage
Patent
1981-04-21
1983-01-25
Chamblee, Hugh R.
Animal husbandry
Entomological culture device
Egg treatment, production, or storage
A01K 6300
Patent
active
043697356
ABSTRACT:
Fish breeding raceways and other water channels of uniform cross-section are cleaned by a moving dam having a water passageway along the bottom to cause flushing of loose dirt as water accumulated behind the dam rushes through the passageway, and the water head behind the dam also provides force to move the dam longitudinally through the raceway. A support mechanism prevents the dam from tipping forward under the force of the water head, and this mechanism may be one or more arms extending forwardly of the dam and in contact with the raceway bottom wall. A bottom cleaning member such as a brush, sponge, or wiper is connected to the dam in advance of the water passageway, such as at the forward end of the support mechanism, for loosening removable material. Flexible seals at the sides and bottom of the dam limit excessive loss of water head due to irregularities in the channel cross-section, and the bottom seal may define a downwardly angled water passageway on the upstream side of the passageway under the dam for further improved flushing action.
REFERENCES:
patent: 2198823 (1940-04-01), Kelpsh
patent: 2289109 (1942-07-01), Edwards et al.
patent: 4236488 (1980-12-01), Olds et al.
Chamblee Hugh R.
Rost Kyle W.
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