Dual cylinder to be incorporated in a lock safety

摘要

P the cylinder is of the type comprising a sleeve 4 and a barrel 1 - 2 are coaxial, with the movable pins 6 - 8 inserted respectively in the sleeve and the barrel. / p & & p & according to the invention, the sleeve 4 is constituted by a stack of plates 11 paper- in a sheet of steel that is hard and then assembled by welding or brazing. / p & & p & these flanges are extensions by a tail 4a having a recess 12 in which a key 13 inserted hard steel, which contributes to the rigidity of the sleeve 4. This key comprises a transverse bore 1 shows an axial half cross section 14 intended to receive a fixing screw. / p & & p & application: safety resistant to locks of an attempted break-in, in particular by tearing away of the cylinder. / p