are displaced to their extended positions against the biasing force of the springs 108 so as to cause the stem portions 106 of the pistons 100 to project outwardly of the end fittings 96 in order to press the three ply fold in a way such that the same maintains its configuration after the pressure exerted thereon has been released the pistons 100 are moved to their extended position by pressurized air fed by the air compressor into the first chambers 110 through port 114 once the three ply fold has been formed at the periphery of the sheet of dough d the same is moved to the next station namely the rolling station 24 at the rolling station 24 the three ply fold formed at the periphery of the sheet of dough d is rolled upon itself to form a double fold on the periphery of the sheet of dough d as shown in fig1 the rolling station 24 generally comprises a plurality of circumferentially distributed fingers 118 connected to each other by means of a flexible latex cord 119 according to a preferred embodiment of the present invention the plurality of fingers 118 includes 28 fingers having a 1 inch width each finger 118 is mounted to the lower end of an arm 120 which is in turn pivotally mounted to the.