The cognitive developmental perspective

In a construction which is alternative to that shown in the parent disclosure, a kick-over tool is provided which has four arms having pivot points near the mid-point. They are to be contrasted with the bow strings of the parent disclosure. The arms are clamped by an external slidable sleeve. In the up position, the sleeve locks a knuckle joint in the tool which maintains it stiff and straight. The up position also clamps the four arms against a central shaft. When it is time to operate the kick-over tool, oil or mechanical jars connected above the tool are operated to jar the sleeve downwardly. This frees up a knuckle joint to enable the lower portions of the tool to flex sideways into a side pocket for installation of a tool which is carried on a pulling or running tool mounted below the kick-over tool. When the sleeve moves downwardly, freeing the knuckle, two of the four opposing arms are freed to deflect outwardly. The two which do not deflect outwardly remain clamped because of the absence of room in the tubing at this point. The two which reflect outwardly kick the lower end of the tool into the side pocket, enabling the pulling or running tool therebelow to place the tool to be installed in the side pocket. The arms which deflect are subsequently forced back in against the side of the tool on retrieving the kick-over tool from the side pocket back into the restraint of the smaller tubing string.