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: The invention relates to an apparatus actuated by the explosion of a cartridge (2), particularly a slaughtering pistol, of the type comprising: a hammer (4) able to slide in a bore between a cocking position and a percussion position where it is in contact with a striker (3); flexible means (5) able to carry hammer (4) from its cocking position to its percussion position; a locking element (6) able to lock hammer (4) in its cocking position as well as in a safety position between the cocking position and the percussion position.