Woodworking – Process – Mechanical cutting or shaping
Patent
1983-04-18
1984-05-01
Bray, W. D.
Woodworking
Process
Mechanical cutting or shaping
34 134, 144380, 432 18, F26B 912, F26B 700
Patent
active
044455593
ABSTRACT:
A breakdown hoist is located in a timber processing operation between a direct-fired ash-producing combustor for generating the heated gas stream for kilning a pile of lumber and the feed for a downstream operation such as sorting, grading, trimming and/or packaging, with or without planing. At the hoist, the kilned lumber is progressively destacked in a tilting, sliding and tumbling operation which results in the shunting-aside of spacer sticks, and conversion of the pile into a single layer of lumber progressing along on a feeding deck toward the downstream operation. A fog cloud of water droplets is sprayed obliquely downwards towards downstream from about 3 to about 9 feet above where the breakdown hoist adjoins the upstream end of the feeding deck, at approximately parallel to the top course on the pile. The fog cloud spreads out to envelope the feeding deck. As the kilned lumber tumbles from the top of the pile and ash particles are shaken off and become airborne, they become wetted by water droplets from the fog cloud and settle to the floor. This settling takes place primarily around the breakdown hoist and planer infeed decks. Periodically the floor is cleaned to gather the precipitated ash. The lumber itself is transported along the line without having become substantially wet and, generally, is ready for immediate packaging upon reaching the packaging station.
REFERENCES:
patent: 1420976 (1922-06-01), Dickerson
patent: 1795953 (1931-03-01), Johnson
patent: 3276492 (1966-10-01), Kervefors
patent: 4167961 (1979-09-01), Paris
patent: 4343607 (1982-08-01), Coleman
Balfour Lumber Company
Bray W. D.
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