Abstract: An automatic unit for the programmable tucking in of part of a piece of material and the automatic fixing of this tuck by a heat-sealed reinforcement comprises two machines arranged at an angle of 150.degree. relative to one another and symmetrical with respect to the median axis separating them.

Abstract: The disclosure is of a device to facilitate the folding-down of jacket collars comprising in combination a lower support member for supporting a jacket to which an initially unfolded collar is attached, a lower plate which is pivotally mounted and controllable by a jack so that it swings down on to the jacket and then the upper edge of the lower plate forms a template against which the lower edge of the collar on the jacket can be located, an upper plate which is pivotally mounted and controllable by a jack so that it swings down and lies against the lower plate and a portion of the upper plate projects above the upper edge of the lower plate, the upper edge of the upper plate then forming a template for a fold line of the collar.