1
Joseph R Woolslayer, Cecil Jenkins, John C Brittain: Automated pipe racking apparatus. Lee C Moore Corporation, Alan T McCollom, February 16, 1988: US04725179 (120 worldwide citation)

Apparatus for use to facilitate threading and unthreading substantially vertical lengths of pipe on a drilling rig by moving the pipe between the well bore center line and a racking assembly. An arm having a gripping head mounted thereon is extendable and retractable relative to a carriage mounted o ...


2
John C Brittain, Cecil Jenkins, William P Adelman, Joseph R Woolslayer: Pipe moving apparatus and method. Lee C Moore Corporation, Laney Dougherty Hessin & Beavers, May 30, 1989: US04834604 (70 worldwide citation)

Machine for moving casing or pipe from a horizontal position adjacent a well to a vertical position over the well bore. The machine includes a boom movable between a lowered position and a raised position by a hydraulic ram. A strongback grips the pipe and holds the same until the pipe is vertically ...


3
Cecil Jenkins, Leroy K Peaster, John C Brittain: Apparatus for skidding a load on a support. Lee C Moore Corporation, Laney Dougherty Hessin Claro & Beavers, October 7, 1986: US04615508

Apparatus for skidding a drilling rig of the type having a roller mechanism which includes at least one roller for non-rotatingly supporting at least some of the rig on a platform and at least one roller for rotatingly supporting at least some of the rig while it is skidded. The drilling rig platfor ...