wing to carry out this inwardly directed movement when the lower end of the rod 16 is moved further upwardly from the position shown in fig5 the upper rod end cannot move further upwardly and the result will be an increased bending of the rod whereby the upper bent rod portion designated 28 is bound to be bent outwardly this however gives rise to the upper rod end transferring an increased inwardly directed pressure on the wing 10 which will thus see fig6 be folded further inwardly and now even downwardly the rubber rod seeks to straighten out itself this having the important consequence that it will affect the wing 10 as a whole with an upwardly directed pull whereby the folding area 12 is kept drawn upwardly such that the folding will not get the character of a sharp bending in this manner plenty of space can be left for the dough member 14 to be folded through a desired soft curve i e with the possibility of being folded over an amount of stuffing not shown placed on the dough member without the stuffing being pressed inwardly by the folding of the wing 10 when the rubber rod 16 is pushed further upwardly the bending of the portion 28 will proceed still further see fig7 and consequently the upper end of the rubber rod will bias towards the left and thereby force the wing 10 to be folded further inwardly and thus also downwardly even though the rubber.