point of attachment to the frame 68 around all of the sheaves as defined hereabove and ultimately where attached with respect to the container itself this path will be lengthened as the apparatus of the present invention is operated and initially as the primary shoe member 22 starts movement from the primary shoe starting position 26 toward the primary shoe final position 28 as this movement occurs the length of the path of the cable will be lengthened causing the cable which is of a fixed given length to pull the container up onto the upper support surface 20 of the roll off vehicle 12 operation of this apparatus is initially achieved by actuation of the longitudinally extensible member 48 which in this embodiment comprises the hydraulic cylinder the cylinder will begin to extend to initiate movement of the primary shoe member 22 from the primary shoe starting position 26 toward the secondary shoe member 24 along the primary shoe movement path 30 initially when the apparatus of the present invention is first started the primary shoe member 22 will be in the primary shoe starting position 26 and the secondary shoe member 24 will be in the secondary shoe starting position 32 the initial extension of the hydraulic cylinder 48 will cause primary shoe member 22 to start to move from the.