Pipe rack with pivoted fingers and screw conveyors

Details Pipe rack with pivoted fingers and screw conveyors Pipe rack with pivoted fingers and screw conveyors

1975-09-05

1976-10-19

Spar, Robert J.

Article dispensing

With discharge assistant

Reciprocating

214 25, 221224, E21B 1914

Patent

active

039866181

ABSTRACT:
A plurality of vertically spaced rows of longitudinally inclined fingers spaced laterally in each row are pivotally supported on transverse horizontal axes near one end. The fingers slope upwardly from the supporting means and also project in the opposite direction from said axes. Vertically movable cam members at the lower ends of the fingers are provided with vertical surfaces that overlie the lower ends of the fingers when the cam members are in their uppermost position. The cam members are movable downwardly step by step by reversible means to cause them to depress the lower ends of the fingers and thereby raise their upper ends. The upper ends of the fingers in the row immediately below the lowest row of raised fingers are positioned to receive a horizontal pipestand lowered onto them. Inclined conveyor screws spaced laterally from the fingers and sloping to the same extent are movable vertically with the cam members. The screws are driven from their lower ends intermittently to convey each successive pipestand step by step downwardly along the fingers supporting it. When a row of fingers has been covered by a row of pipestands, the cam members are moved upwardly far enough to permit the lowest row of raised fingers to swing down over the pipes directly below ready to receive and support the next row of pipes.

REFERENCES:
patent: 3630392 (1971-12-01), Cintract
patent: 3844420 (1974-10-01), Walling

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