means that either the deflection roller 12 is movable relative to the support 30 or that the support 30 is movable relative to the deflection roller 12 alternatively it may be provided that both said support 30 and deflection roller 12 are adjustable in the vertical direction this embodiment serves for adapting said multiple needle sewing machine to layers 6 and 15 of different thickness wherein said layer 15 of elastical material is much thicker than said layer 6 of non elastical material it is necessary that the deflection roller 12 acts on said material layers 6 15 at a predetermined pressure in order to provide the required friction forces the deflection roller 12 represents a device topping said sewing unit by means of which device the layer 15 of elastical material is fed to the sewing unit at a speed which is relatively higher than the speed of the layer of non elastical material wherein the layer 15 of elastical material is bulged within the area of the deflection roller 12 and is under maintaining said bulged condition fed to the sewing unit together with the top layer 6 and the bottom layer 21 to this end the deflection roller for.