Abstract: A buried cable laying apparatus to lay a cable in an open trench in the ground in a relaxed or tension-free state. The apparatus progressively forms a trench and then buries detensioning line and a cable in the trench. The detensioning line is in tension and the cable is in a relaxed state. The detensioning line and the cable are both unreeled from drums moving at the same rotational speed. The drum of the detensioning line is of a smaller diameter than the drum of the cable whereby the detensioning line drum will feed more cable than is required but slip relative to the cable until the cable gets tight.

Abstract: A crawler tractor is connected to a cable, pipe and line laying machine with a hitch assembly. The hitch assembly has a transverse drawbar secured to forwardly directed side members. The side members being pivotally mounted to the side frames of the tractor are raised and lowered with a pair of double acting hydraulic cylinders. The machine has a frame attached to the drawbar. An annular resilient and flexible member pivotally mounts a body on the frame. An attitude control cylinder connected to the frame and body adjusts the angular position of the body and a plow standard connected to the body. Plow standard is connected to the body with link and connecting members. On forward movement of the tractor, the plow standard is moved through the soil to form a slit trench for the cable, pipe or line. The connecting members are mounted on a crank shaft rotated by a hydraulic motor to provide the standard with an orbital movement.

Abstract: An implement having an elongated tool extendable into the subsoil to break up the hardpan and open the subsoil for moisture and tap roots of plants. The tool has orbital motion generated with power driven eccentric structures coupled to the tool. Power is applied to the eccentric structure with a gear box driven with a hydraulic motor. Flywheels are connected to the eccentric structures and the gear box drive shafts. Links connected to the tool and a frame carry a rolling coulter disc operable to cut a slit in the soil ahead of the tool. A hinge assembly having elastic members mounts the frame on a carriage. In one form, the carriage is pivotally mounted on a draft beam of a moldboard plow and biased to an earthworking position by a hydraulic cylinder. In a second form, the carriage is a plate which forms a part of a hitch assembly for connecting the implement to a three-point hitch of a draft tractor.