Abstract: A process for treating animal hides includes spreading the hides (1) to be treated astride respective supporting plates (2) and introducing the plates into a container (10). Afterwards, the container (10) is closed hermetically and set under vacuum. A liquid solution is introduced into the container (10), to treat the hides, in particular to transform fresh animal hides into wet white state. The container (10) is driven into vibration, to make the solution contained in the container (10) move in a continuous and uniform way.

Abstract: A process for treating animal hides includes spreading the hides (1) to be treated astride respective supporting plates (2) and introducing the plates into a container (10). Afterwards, the container (10) is closed hermetically and set under vacuum. A liquid solution is introduced into the container (10), to treat the hides, in particular to transform fresh animal hides into wet white state. The container (10) is driven into vibration, to make the solution contained in the container (10) move in a continuous and uniform way.

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: 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 device comprises an arm consisting of a number of consecutive segments fixed with one of its ends, to a first pivot protruding from a structure and made revolving so to bring about the oscillation of the arm, with a member supported in revolving mount by a second pivot fastened to the free end of the support, having its lower part extending circumferentially and provided with a toothing which engages with a worm screw supported by the support and dragged to rotation by a number of shafts, bevel gear pairs, supported by the arm and with their terminal end suited to coupled with a sector of crown gear fastened to the structure and concentrical as to the first pivot, so that, following the rotation of the first pivot in either sense the member is subjected to a rotation having the same angular amplitude and opposite direction.

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 device for operating and orientating a pair of automatic sewing machine needles have two needles which are locked to the lower ends of two equal rods, located beside one another in the vertical plane. These needles change over position during stitching without requiring reorientation of the needles themselves. The device has a cylindrical element movable in the vertical plane, which has the needles and rods therein. The device also includes a sleeve and guides for guiding the vertical movement of the cylinder, with driving means for driving the sleeve and cylinder such that the orientation of the rods is unaltered when they change over position. This enables the needles to operate in conjunction with the looper of an automatic sewing machine to which the device is fitted.

Abstract: The process is defined by a cyclic succession of identical phases, through each of which the part of the skin subjected to stretching is gradually wound from one extremity to the other, and vice versa, by means of a continuous or discrete surface that exercises an adjustable pressure thereon.A device with which the process can be carried out is constituted by a netted container, hung from a support, housing spherical objects and banded circumferentially with an elastic. The bottom end of the container is hooked to a wire that defines, in the said end, an adjustable depth lip.With the said support given a top downward and vice versa movement, the bottom end of the container comes into contact with the vamp and then enshrouds this completely.Consequently to the motion given to the support, the spherical objects that protrude from the meshes in the net come, first of all, into contact with the skin of the vamp and then roll over and/or rub, under pressure, against the said skin which is gradually stretched.

Abstract: Disclosed herein is a machine with which it is possible to effect the stitching between the vamp and the upper part of the shoe and thus to create the upper border on "moccasin" type shoes, in particular, those of the "tubular moccasin" type, which utilize a continuous end sealed vamp. An improved ruffling of the vamp prior to attachment to the upper portion is accomplished by synchronized ruffling jaws. The machine operates in a fully automatic fashion and has the capability to vary the length of the stitch and of the ruffle of the vamp in the region of the upper part of the shoe.

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.