Abstract: A stationary or mobile cable spooling system for winding up electrical cables used on drilling rigs comprised of an axle for insertion into a cable spool, a yoke for rotationally mounting the axle, a hydraulic motor coupled to the axle for rotating the spool and a cable guide system which evenly winds the cable onto the spool. The cable guide system is comprised of a cable guide mounted on a diamond grooved shaft which traverses from one side of the shaft to the other guiding the cable onto the spool. The hydraulic motor is driven by a pressure compensated hydraulic pump which prevents excessive force being applied to the cable as it is being wound on a spool. If the cable should catch or bind in any fashion and the stress on the cable exceeds a certain amount, the hydraulic motor will slowly stop when the pressure in the hydraulic pump exceeds a pre-determined amount.

Abstract: A stationary or mobile cable spooling system for winding up electrical cables used on drilling rigs comprised of an axle for insertion into a cable spool, a yoke for rotationally mounting the axle, a hydraulic motor coupled to the axle for rotating the spool and a cable guide system which evenly winds the cable onto the spool. The cable guide system is comprised of a cable guide mounted on a diamond grooved shaft which traverses from one side of the shaft to the other guiding the cable onto the spool. The hydraulic motor is driven by a pressure compensated hydraulic pump which prevents excessive force being applied to the cable as it is being wound on a spool. If the cable should catch or bind in any fashion and the stress on the cable exceeds a certain amount, the hydraulic motor will slowly stop when the pressure in the hydraulic pump exceeds a pre-determined amount.

Abstract: A gripping assembly for moving drilling rigs on offshore drilling platforms in which the drilling rigs are supported on a plurality of skid bases. The gripper assembly rests on the skid bases and provides means for selectively gripping the skid base when a drilling rig is to be moved. The gripper assembly has a platform supported by end plates resting on the skid base flanges and is connected to the drilling rig by a hydraulic jack cylinder which moves or slides the drilling rig on the skid bases in a stepwise fashion. Traversing the platform is a cross-member pivotally supporting gripper arms for applying a clamping force to the skid base. The gripper assembly is clamped on the skid base by means of a clamping hydraulic cylinder to apply a force on flanges on the gripper arms, while the hydraulic jack cylinder is operated to push or pull the drilling rig a distance equal to the extension distance of the hydraulic jack cylinder stroke.