Abstract: A device making it possible to better spray the fluid that one wishes to spray by using a portion of the air blast which is intended to diffuse it. The device has a low pressure airflow generator, supplied with ambient air, capable of creating a high-flow-rate compressed air blast in an aerodynamic stream, and a pre-mixing chamber, supplied with compressed air by tapping a portion of the flow at the outlet of the stream using nozzles, provided with aerodynamic swirlers of which the effect are known, supplement the spraying of the fluid carried out by pressurized ejectors.

Abstract: The device for sharpening a cutting blade presenting a sharp edge includes at least one grinding wheel provided at least on the surface with abrasive material. The grinding wheel has a cylindrical body presenting a V-sectioned peripheral groove, and is mounted to rotate freely about an axis contained in a plane generally parallel to the sharp edge of the blade and perpendicular to the median plane of the blade, with the axis being inclined by a predetermined angle with respect to the normal to the median plane of the blade. The sharpening device is further constructed to place the blade and the grinding wheel in contact and to provide for relative displacement of the blade and the grinding wheel in a direction parallel to the sharp edge of the blade.

Abstract: A cutting and punching apparatus for sheet material, designed to be movably mounted on an automatic cutting machine, having a cutting tool and a punching tool, wherein said apparatus comprises means for vibrating said cutting tool, means for vertically displacing said cutting tool, means for rotating said cutting tool, means for sharpening said cutting tool, means for vertically displacing said punching tool, means for rotating said machine tool, and a supporting base on which are grouped in a compact manner all said means, which means being operable both simultaneously and independently of each other.

Abstract: This invention relates to a laser cutting apparatus comprising a laser radiation emitter, a focussing lens fixed in an adjustable sliding sleeve, said sleeve being extended, towards the material to be cut, by a truncated nozzle of which the small end is in the immediate vicinity of said material to be cut, said apparatus comprising a gas-evacuation device constituted by a hood--called ejector--open towards the material to be cut and fixed on said sliding sleeve. According to the invention, said ejector comprises, on its periphery and on its open face lying opposite the material to be cut, openings allowing the injection of gas-air along convergent axes, and, in its upper part, a pipe for evacuating the gases. The invention is more particularly applicable to the cutting of materials in sheet form.

Abstract: The invention related to a device for layer-stacking web-like materials, comprising a fixed table on which a carriage is mounted for sliding, said carriage supporting a roll of material mounted for free rotation on a support and being held by pressure against at least one endless driving elastic belt mounted on two rollers placed in parallel relationship inside a vertical plane, said rollers being driven in rotation by a position- and speed-controllable driving member, the material being unrolled and going down freely vertically in order to be laid on the laying table.

Abstract: The present invention relates to a method and apparatus for cutting pieces of fabrics of uniform thickness and for stacking these pieces. The method generally includes arranging and maintaining a length of unrolled fabric on a cutting table which comprises a revolving cylinder which rotates so that the length of fabric is positioned to face a cutting instrument. The fabric is cut out according to one or more predetermined patterns when the cylinder stops rotating. Displacement of the cutting instrument over the circumference of a cylinder follows the generators of the cylinder during its motion. After the fabric is cut, the cylinder rotates to deposit the cutout pieces onto a fixed or mobile receiving/stacking table which is positioned under the cylinder. During such deposition, a new length of fabric is simultaneously arranged on the cylinder preparatory to being cut. Alternately, a conveyor belt can be used in lieu of the cylinder.

Abstract: An apparatus is provided for the interconnection of two mobile carriages which are connected by a rigid beam and guided along parallel guide rails. The apparatus permits the simultaneous and identical movement, with respect to both direction and distance, of the carriages along the respective guide rails. The apparatus comprises two generally symmetrically disposed cables, each of which is attached at one end to an end of one rail and at its other end to a diagonally opposed end of a parallel rail. Intermediate the attachment points, the cables connect the carriages by resting on and being supported by return pulleys which are integral with the carriages. Each cable thereby describes a generally Z-shaped configuration. The Z-shaped configurations are symmetrically disposed in order to cause, during the displacement of one carriage, the tensioning of one of the cables, and thereby cause the other carriage to be identically and simultaneously displaced.

Abstract: This invention relates to a device for driving and displacing a beam in a direction parallel to guide rails, and one or more carriages rigid with the beam in a direction transverse to the displacement of the beam.The device comprises two cables 7 and 8 stretched over pulleys 5 fixed at the ends of the guide rails 3 for the beam 4, and over pulleys 6 of the beam 4. The cables 7 and 8 are wound in reverse directions on the drums 9 of the motors M 1 and M 2 which are disposed symmetrically on one and the other side of the rails, such that when the motors are rotated, they cause the displacement of the beam, or of the carriage fixed on to one of the cables, or the simultaneous displacement of the beam and carriage.