the use of the pulling cable 68 to pull the pull in adapter 14 up ramp 27 onto the porch 26 in some cases the pull in adapter and hub assembly may be suspended off the bottom but the apparatus works the same way in either event the pulling cable extends from the bull nose latch 60 and thence through a universal joint 88 a rotary actuator 90 and a hydraulic cylinder 92 passing out the hydraulic cylinder the pulling cable passes over a series of rollers 96 and a plurality of sheaves 97 98 99 before leading into the hydraulic cable puller 66 the piston rod 94 as well as the piston 240 are bored through the center as shown at 242 to allow passage of the pulling cable therethrough a tubular member 244 slidably and sealingly received within the cylinder 92 provides a conduit to pass the pulling cable out the end of the cylinder a spline gear 246 is mounted on the piston rod 94 and is engaged by a rack 248 which is connected for driving a hydraulic cylinder not shown this rack gear and cylinder combination are capable of rotating the piston rod and therefore the latch 60 a total of in excess of 360 u00b0 i e at least 180 u00b0 in each direction from the central position depicted in the drawings fig9 shows one embodiment of the latch 60 with the bull nose 78 latched in place the.