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

E - Fixed Constructions

21

B

255/14.4

E21B 19/14 (2006.01) E21B 19/15 (2006.01)

Patent

CA 1041990

PIPE RACK WITH PIVOTED FINGERS AND SCREW CONVEYORS Abstract of the Disclosure A plurality of vertically spaced row 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 pro- ject in the opposite direction from said axes. Vertically movable cam members at the lower ends of the fingers are pro- vided with vertical surfaces that overlie the lower ends of the fingers when the cam members are in their uppermost position. The cam members are moveable downwardly step by step by reversible means to cause them to d 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 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 mem- bers 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.

260579

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