16 as shown in fig8 fig7 b illustrates a square cross section in which case one side surface 16b of the belt 16 may be forced to the bottom surfaces of the peg trays 1 as shown in fig9 moreover fig7 c shows a polygonal cross section of the transmission belt 16 as can be seen from the above explanation the passageway of peg trays 1 formed by the transmission belt 16 16a and the elastic guide 18 or the fixed guide 18a is arranged so as to be twisted at desired locations according to the invention therefore the bobbins do not interfere with each other even if a radius of curvature of a curved portion whose center of curvature is on the side of the bobbins is much smaller than those of the prior art accordingly the bobbin transfer apparatus according to the invention requires only a small space in which the apparatus is settled in comparison with those of the prior art layout between the conveyors can be easily achieved so that required cost can be reduced according to the invention moreover the endless transmission belt 16 in contact with the bottom surface of the peg trays 1 to achieve the frictional transmission is arranged and driven along a desired passageway through the grooved belt guide 17 and the guide pulley 15 the two guides 18 18a are arranged along the transmission belt 16 16a and slidably contacting upper surfaces of the peg trays 1 so that the peg trays 1 are elastically embraced between the guides and the transmission belt so as to be elastically compressed by the transmission belt therefore even if the transmission belts 16 is slightly worn the apparatus can continue to transfer the peg trays without any trouble.