Conveyors: power-driven – Conveyor system for arranging or rearranging stream of items – By laterally or vertically moving successive items in...
Patent
1976-04-22
1978-01-24
Blunk, Evon C.
Conveyors: power-driven
Conveyor system for arranging or rearranging stream of items
By laterally or vertically moving successive items in...
198502, 209 74R, 271227, 271239, B65G 4730
Patent
active
040699102
ABSTRACT:
Method for positioning lumber being transported on a conveyor prior to sorting or other similar processing, comprises centering the lumber intermediate its ends on the conveyor, reducing the number of conveyor lines required. The apparatus includes a first displacement member, for laterally even ending the lumber in a first direction, and a sensing member, for sensing the length of the lumber relative to the plane of the even ending. The lumber then is displaced laterally in a second, 180.degree. opposed, direction by a second displacement member until lumber engagement members, upon signal of the sensing member, selectively stop each piece of lumber at a particular transverse position on the conveyor corresponding to the length of that piece of lumber. The lumber engagement members comprise continuous chains interposing the lines of the conveyor and having segmented stops pivotally mounted thereon. The stops are movable between vertical positions for intercepting the lumber, preventing its further lateral displacement, and horizontal positions allowing passage of the lumber. An air cylinder located on each lumber engagement member operates in conjunction with a contoured snout mounted adjacent to one end of the chain for positioning selected stops in their vertical positions before passage by the lumber; and a knockdown pad mounted adjacent to the opposite end of the chain knocks the stops to their horizontal positions after passage by the lumber.
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Davis Frederick J.
Faley Arnold F.
Blunk Evon C.
Thomson Richard K.
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