Machines and machine tools for the cutting and forming of material; machines and machine tools for treatment of materials in particular for the food and pharmaceutical industries, namely, milling machines and cutting machines; cutting machines; blade cutting machines and ultrasonic generators coupled thereto; conveyors being machines; mixing machines; spraying machines; packing machines; stropping machines for sharpening blades; sifting machines; welding and brazing machines; couplings for ma...