Abstract: A sewing machine includes a main frame, a retainer, a rocker arm assembly, a wire assembly, and a platform. The main frame contains therein a transmission mechanism. The retainer is mounted to the base of the main frame. The retainer defines a bore in which a first gear transmission assembly is received. A rocker arm retaining disk assembly is mounted on the bore. The rocker arm assembly includes a rocker arm body which forms a plurality of bent sections which is configured to have the thread engaging device opposing the main frame. The platform is mounted to the base of the main frame.

Abstract: A method for sewing leather articles includes positioning one edge of a first article (8) and one edge of a second article (9) to be sewn together against respective flat side surfaces (7a,7b) of a longitudinal guiding plate (7) formed at the top of a ring-like block (11). The ring-like block (11) rotates on a pin (12) that is supported, with horizontal axis and perpendicular to said guiding plate (7), by a free end of an arm (13) that swings with respect to a stationary support frame (2). The edges of the articles (8,9) are sewn together by means of an arc-shaped needle (6), which is reciprocated on a plane transversal to the guiding plate (7), between a retracted position, in which the needle is located beside one of said flat side surfaces (7b) and a piercing position, in which the needle pierces said articles (8,9); the needle (6) is moved forward and backward according to a predetermined step.

Abstract: A machine includes a fixed guide (3) which longitudinally defines two work tops (P1 ,P2), the work tops supporting and guiding the edges (30a,40a) of leather articles (30,40) to be sewn together. As it moves following an arcuate path, the needle pierces the edges (30a,40a), located on the work tops (P1,P2). After a stitch is made, the needle and a rotating crochet (19) are shifted toward the machine structure, making the two edges of the leather articles move one step forward. After having left the edges of the leather articles (30,40), located on the work tops (P1,P2), the needle and the rotating crochet (19) rise and are shifted in the opposite direction up to their starting position. Two presser feet (15a,15b), situated beside the two work tops, at the back of the needle (14), press the edges of the leather articles (30,40), when the needle pierces them.

Abstract: A device for decorative sewing of articles made of leather includes a longitudinal guide (7) a part of which is laterally delimited by two inclined flat surfaces (7a, 7b) upwardly convergent, forming at the top a tooth (10) on which an article (1) to be sewn is moved. A folding member (12), situated over the longitudinal guide (7), clamps the article (1) to the tooth (10), by folding this article (1) on the inclined flat surfaces (7a, 7b), when the needle (20) has formed a stitch (4). A leather pressing element (15) oscillates on a plane that is transversal with respect to the longitudinal guide (7) and presses the article (1) in position adjacent to the stitch 4 just formed, on the side where the needle (20) enters the article (1).

Abstract: An improved device for sewing two articles with overlapped edges, includes a longitudinal guide (7), laterally delimited by two inclined, upwardly convergent, flat surfaces (7a,7b) on which a first article (1) and second article (2) to be sewn are moved. A curved winglet (11) is made integral with the top of the guide (7) and is bent downwards to overhang one of the inclined surface (7b). A folding over member (12), moves vertically over the longitudinal guide (7), so as to clamp an edge (3) of the first article (1) on the curved winglet (11), thus folding over the edge (3) so as to overlap a corresponding edge of the second article (2), while a needle (20) makes a stitch (4). A support element (17), equipped with a presser foot (18), presses the edge of the second article against the inclined surface (7b) of the guide (7).

Abstract: In a machine with a longitudinal guide forming, at both sides, two working surfaces, onto which articles are arranged for sewing their upper edges, there is provided a wrinkling device in which two vertical presser feet, inner and outer, are moved vertically in an independent manner and in time relation with the motion of a needle, so that they make wrinkles on an edge of the articles, in alternate position with stitches. The needle, provided with a thread, cooperates with a rotary hook connected with a spool of stitching thread; the needle extends in an arc concentric to a shaft that moves the needle with oscillatory and translatory longitudinal to-and-fro motion.

Abstract: A workpiece holder which is attachable to positioning apparatus associated with the sewing head of an automatic sewing machine whereby the workpiece holder can be automatically positioned with respect to an automatic reciprocating needle in the sewing head so as to allow a workpiece held within the workpiece holder to be sewn. The workpiece holder is adapted to hold cording to be disposed in the workpiece by stitching thereby to give a corded effect to the stitch pattern. The workpiece holder includes a base plate having at least one open stitch area being defined by edges within the base plate and arranged to hold a workpiece to be sewn. At least two rows of posts are disposed on the base plate, each of the rows being disposed adjacent to opposite edges of the stitch area. A cover plate is pivotally attached to the base plate. The cover plate has an open stitch area corresponding in location to the open stitch area on the base plate.

Abstract: A machine for manufacturing shoes by stitching along the border of the shoe with a striker situated inside the upper and positioned in the stitching area of the shoe, comprises a freely rotatable striker supported by an oscillating arm and positioned on the inside of the upper in correspondence of a stitching station. The station is defined by a guide fork situated with its prongs in a horizontal position, with which the striker engages when in its operating position.

Abstract: The machine includes a fixed guide that defines two longitudinal work tops, first and second work tops, which support and guide the edges of leather articles to be sewn together. A curved needle, located next to the first work top, pierce the edge located on the first work top, pass through a slot in a guide, pierce the another edge, which is being pressed onto the second work top by a pressure foot, and, finally, operates in combination with a crochet hook to produce a stitch. The needle-pressure foot assembly serves to intermittently feed the two edges while a feed dog, acting in combination with a second pressure foot located downstream of the assembly, crimps the edge situated on the first work top.

Abstract: A fabric slipper upper is stitched on a stitching machine along the inner surface of a peripheral flange of an outsole by the provision of an upper feed only and a nosepiece having a blunted end and smooth sides and ends but with no lower feed.

Abstract: An automatic machine for zig-zag stitching of tubular elements, in particular for stitching trimmings on mocassin type footwear and for fixing transversal reinforcing bands to the vamp of the footwear, where the cylinder containing the "crochet" is circular-sectioned and the work plane on which to lay the material to be stitched is curved with its curve center on the axis of the cylinder and the work plane is supported by a collar co-axial with and external to the cylinder, and longitudinally mobile and rotarily coaxial with respect to said cylinder. The machine also includes the pressure foot which grips the material to be stitched tautly to said work plane, the pressure foot being supported by a guide line fixed to said collar and arranged above the work plane.