and waits for admission of the lower hook 109 the travelling case receiver 107 falls and transfers the bobbin case 108 to the left sided stopper 105a of the concave stopper 105a of the case receiver 105 on which the bobbin case 108 was loaded before and falls further the lower hook 109 advances along the groove arranged on the surface f of the upper hook 104 and hooks the warp 1 from the left side to the right side of the lower hook 109 by means of the well known movement of the warp guide member 103 the travelling case receiver 107 falls to the position little lower than the bobbin case 108 and then begins travelling to the right the lower hook 109 pulls the loop of the warp 1 out to this side when the loop of the warp 1 strides across bobbin case 108 finishing travelling to the left the loop of the warp 1 trips the lower hook 109 the travelling case receiver 107 travels to the right and returns to the starting position the relation between the warp 1 and the weft 2 at this time is shown in fig3 i the warp 1 is pulled backward by means of the fall movement of the well known falling shaft not shown the loop of the warp 1 formed by the lower hook 109 is retracted and the loop of the weft 2 is formed the upper hook 104 is slanted and the loop of the warp 1 is pulled out of the upper hook 104 and the balanced knot construction is formed as shown in fig4 in which n shaped loops of the warp 1 and s shaped loops of the weft 2 twine together meshes are fastened by increasing tension and knots become.