The feeder comprises a spreader device 4, 5 that is configured for seizing two adjacent corners of a piece of laundry and for subsequently shifting the two adjacent corners away from each other, to the effect that a first side edge of the piece of laundry, which side edge is situated between the two adjacent corners, is straightened. By use of two conveyors 6, 11 for advancing the piece of laundry it is enabled that the piece of cloth is turned between the two conveyors whereby a higher productivity is obtained by use of the feeder due to it being necessary to reject fewer pieces of laundry due to misaligned introduction of the pieces of laundry into the feeder.