and completely guarded in the housing 6 and not reachable in any way but through the keyhole 8 this locking house 11 locks the ends 12 of the shackle because of the fact that the locking house 11 as well as the shackle holder 4 are completely hidden no forces for parting of these parts can be placed against them instead having a shackle of performance characteristics shown other arrangements can be used such as two pins with tracks similar to those shown in fig1 which are not connected by a bow but are locked by tracks similar to those shown at the ends of shackle 12 in the shackle holder or slide 4 as the lock 11 is not a part of the invention this could be of a different kind and the shackle 10 with the ends of the shackle 12 can consequently be of an entirely different kind such as a tap or a hook or similar arrangement as shown in the drawing the hollowness in the housing 6 containing the locking house 11 is limited by two stopping pieces 13 these stopping pieces 13 prevent locking house 11 from being drawn out at an open lock and also hinder the slide or shackler holder 4 from hitting against the locking house 11 any hits against the bar 1 in an axial direction does not interfere with the locking house or the slide.