Method and apparatus for high speed variable tier width lumber s

Details Method and apparatus for high speed variable tier width lumber s Method and apparatus for high speed variable tier width lumber s

1997-07-25

1999-10-12

Ellis, Christopher P.

Material or article handling

Apparatus for moving intersupporting articles into, within,...

Stack forming apparatus

4147934, 4147943, 4147895, 1984192, B65G 5710

Patent

active

059645709

ABSTRACT:
A tier forming and handling device for forming and handling sequential tiers of lumber from a flow of elongate boards translated on a first conveyor in a first flow direction, wherein the boards are aligned along their length generally perpendicularly to the first flow direction, having a mat forming mechanism for collecting, by selectively actuable hook stops, the flow of elongate boards against the hook stops so as to form a mat of lumber having a downstream end adjacent the hook stops and an upstream end whereagainst the flow of elongate boards may continue to collect into abutting adjacent array; a mat separator for separating, along the first conveyor, at a selectively adjustable separation location, a tier of lumber from the downstream end of the mat of lumber; and, a variable speed tier accelerator for conveying and selectively variably accelerating the tier of lumber, once separated along the first conveyor, from the first conveyor to a hoist stacker, wherein the selectively adjustable separation location is selectively adjustable along the first conveyor so as to selectively adjust a first dimension of the tier parallel to the first direction.

REFERENCES:
patent: 2730247 (1956-01-01), Lawson
patent: 2861702 (1958-11-01), Mason
patent: 3169646 (1965-02-01), Mason
patent: 3968886 (1976-07-01), Leon
patent: 4892458 (1990-01-01), Proulx

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