Abstract: A cable hanger for use in a cable-guided fishing operation is disclosed. The disclosed invention provides a cable hanger in which a specially-shaped hanger body is connected to a handle having a cable groove running through it. The cable groove allows for the centerline of a cable to run through the centerline of the handle, thereby allowing for a straight-line pull to be exerted on the cable through the cable hanger. The specially-shaped hanger body is operatively connected to a specially-shaped body cover by a plurality of links. In this way, the hanger body and cover form a “clamshell” arrangement in which the cover can rotate from an open position to a closed position around the cable. When in the closed position, the cover and body are bolted together along the side of the cover and body opposite the links.

Abstract: An internal, positive engagement lock that locks a tool, such as a hydraulic drilling jar, in the fully open position when the tool is racked back and when tripping in and out of the hole close to the surface. The lock mechanism is spring biased into a locked position that provides a positive engagement between two axially translatable components, thus preventing any actuation of the tool. As the tool is run in the hole, increasing hydrostatic pressure within the tool will cause the locking mechanism to shift to a disengaged position and the tool will operate normally. The spring-biased locking mechanism will return to the locked position as hydrostatic pressure decreases as the tool is retrieved to the surface.

Abstract: An internal, positive engagement lock that locks a tool, such as a hydraulic drilling jar, in the fully open position when the tool is racked back and when tripping in and out of the hole close to the surface. The lock mechanism is spring biased into a locked position that provides a positive engagement between two axially translatable components, thus preventing any actuation of the tool. As the tool is run in the hole, increasing hydrostatic pressure within the tool will cause the locking mechanism to shift to a disengaged position and the tool will operate normally. The spring-biased locking mechanism will return to the locked position as hydrostatic pressure decreases as the tool is retrieved to the surface.