Patent ID: 6393961
Filing Date: 2002-05-28
Classification: F41A

Abstract:
A straight-pull breechblock with rotating-boss locking mechanism for a repeating weapon, having a breechblock sleeve which is guided in a breechblock housing and carries a bolt handle for the manual to-and-fro motion and in which, by means of a shaft, a breechblock head which bears locking bosses is mounted in a forcibly guided, rotatable manner, and which breechblock further comprises a firing pin which is acted on by a firing spring, which further serves to generate an angular momentum in order to rotate the breechblock head in a locking position into a locking chamber corresponding to the locking bosses, associated with the breechblock sleeve (24) are forcibly controlled stopping means which block the angular momentum which effects the locking, and a stopping lever (58) provided as the stopping means which suppress relative movements between the breechblock sleeve (24) and the breechblock head (27), the stopping lever (58) is acted upon by a spring (65) in a stopping direction and is mounted rotatably on the breechblock sleeve (24), one lever arm (61) of which the stopping lever has a locking projection (62) corresponding with a locking groove (66) in the shaft (26) of the breechblock (27) and another lever arm (63) of which has a control ramp (64) which cooperates with a contact edge (69) of a breechblock bridge (21), all this in such an arrangement that when the breechblock sleeve (24) and breechblock head (27) are moved into the locking position, the stopping lever (58), upon reaching the locking position, is, by way of the control ramp (64), against the action of the spring (65), brought out of engagement with the locking groove (66), while in the case of movement out of the locking position, the locking projection (62) of the stopping lever (58) becomes free of the locking groove (66) of the breechblock head (27).