Process for the production of pockets for wallets and related equipment

A device (1) for sewing overlapping pockets in a wallet or briefcase, said kit comprising an arrangement (5, 6, 7, 9, 15) configured to be applied integrally to a flat seam (14) a sewing machine, said arrangement comprising a locking unit (5, 6, 7), mobile, when in use, to the plane seam (14) between a raised position from said flat seam (14) and a folded position substantially in contact with the flat seam and which can additionally be moved in parallel to the sewing plane; further comprising said arrangement (5, 6, 7, 9, 15) a block template (9) provided with an opening (12) in which two or more sheets of overlay material to be sewn can be positioned and configured to I can be applied integrally to the sewing plane (14), wherein said block template further comprises a hinged closure (10) which can be extended progressively to the opening.