Abstract: A device for sharpening the blades of sharp tools includes a plate fitted with an opening letting through the tool blade, opposite which opening are provided two sharpening structures in the form of oblong spindles which cross one another. Both these sharpening spindles are hinged at one of their ends on the plate, each on one side of the opening, and they include an elastic recall device for forming a sharpening V mobile under the pressure of the blade to be sharpened. Each sharpening spindle has a U-shaped rod with two parallel or substantially parallel arms which are connected at the bottom of the U and both fee ends of the U include square junctions forming hinging axes which are recessed, free to rotate, in offset engagement orifices provided on an appropriate support interlocked with the plate, in order to obtain elastic recall of the sharpening spindles by a twisting effect.

Abstract: A fastening system includes (3) a flexible plastic neck-enclosing part (7), and a strap (13) arranged in a triangle between the sides of the apron and the rear part of the neck-enclosing part (7) to form both the belt (14) and the braces (15). The belt (14) includes a fast fixing attachment (16) such as a snap fastener and a length-adjusting system with a clip (17) provided on the strap (13) length, particularly on one of the braces (15). The belt-brace system enables to adjust with precision the position of the apron and particularly to distribute suitably the weight on the user's shoulders.

Abstract: This device for glazing the blades of sharp tools comprises a plate (1) fitted with an opening (2) letting through the tool blade, opposite which opening (2) are provided two glazing structures (10, 12) in the form of oblong spindles which cross one another. Both these glazing spindles (10, 12) are hinged at one of their ends on said plate (1), each on one side of said opening (2), and they comprise elastic recall means, in order to form a glazing V mobile under the pressure of the blade to be glazed.

Abstract: The invention concerns a metal mesh glove provided with a likewise metal mesh extension (3), designed to cover the user's wrist, forearm and optionally arm. The invention is characterised in that said extension (3) is equipped with a rigid projecting beaded edge (6) arranged over at least part of its periphery and adapted to prevent a tool blade sliding on the metal mesh from thrusting further forward. Said rigid beaded edge (6) consists of a directly mounted structure in the form of a directly mounted circular loop (8), made of a rigid material and made integral with the metal mesh fabric by any suitable means.