a hydraulic cylinder 72 while pivoting of the lever 71b is controlled by a hydraulic cylinder 73 connected to shaft 70 the present modification also assures a higher degree of freedom in the route selection of the two transfer levers so that collision between the loom 3 and the warp beam or the transfer lever may be effectively avoided in the present embodiment the supporting platform 9 is shifted by a hydraulic cylinder 74 the looming apparatus of the present invention may be provided with a warp tension adjustment means as shown in fig1 wherein the full warp beam is turned in the normal or reverse direction as a function of the magnitude of the tension on the warp yarn threaded through the aforementioned elements from the full warp beam referring to fig1 at the inner side of one supporting post 34 a fixed lever 75 has its one end fitted on a shaft 57 herein formed as a hexagonal shaft a hydraulic cylinder 77 is mounted within a recess 76 formed in the upper side of the fixed lever 75 the forward end of a piston rod 78 of the hydraulic cylinder 77 is secured to a supporting bracket 81 while a warp tension adjustment means 79 is provided in the projecting direction of the piston rod 78 the warp tension adjustment means 79 is made up of a hydraulic motor 80 that may be driven in both the forward and reverse directions a speed reducing unit 82 mounted to the motor 80 through a supporting bracket 81 and a friction roller 83 connected to the speed.