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US 5,259,137 AGranted
Breech mechanism for a firearm especially a repeater weapon
AssigneeHorst Blaser Jagdwaffenfabrik
InventorsGerhard Blenk, Meinrad Zeh
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AssigneeHorst Blaser Jagdwaffenfabrik
InventorsGerhard Blenk, Meinrad Zeh
Estimating the term…
The breech mechanism for a firearm is provided with a breech housing, a locking head connected to the barrel and having a radially inwardly directed conical locking shoulder oriented rearwardly of a cartridge carrier, and a substantially cylindrical breech block movable relative to the breech housing in a direction toward and away from the barrel. A locking sleeve concentrically surrounding the breech block and axially slidable relative thereto to a limited degree, is divided at its front end by a plurality of longitudinal slots into a plurality of spring tongues and carries at the free, front end of each spring tongue a locking element formed in one piece therewith and in the form of an annular segment. Each locking element has a radially outwardly directed cone segment bearing on the locking shoulder in a locking position and having on its front end a radially inwardly directed cone segment with which it bears on a spreading cone arranged in the vicinity of the front end of the breech block. There is further provided an actuating device which, with the breech closed, pushes the locking sleeve axially forwards relative to the breech block.
A breech mechanism for a firearm, comprising a breech housing, a locking head connected to a barrel and having a radially inwardly directed conical locking shoulder oriented rearwardly of a means for holding a cartridge, a substantially cylindrical breech block movable relative to the breech housing toward and away from the barrel, a locking sleeve concentrically surrounding the breech block and being axially slidable relative thereto to a limited degree, the locking sleeve being divided at its front end by a plurality of longitudinal slots into a plurality of spring tongues and carrying at the free, front end of each spring tongue a locking element in the form of an annular segment formed in one piece therewith, each locking element having a radially outwardly directed cone segment bearing on the locking shoulder in a locking position and having on its front end a radially inwardly directed cone segment with which it bears on a spreading cone arranged in the vicinity of the front end of the breech block, and an actuating device for effecting an opening and a closing of the breech mechanism and for, with the breech mechanism closed, pushing the locking sleeve axially forward relative to the breech block.
Dependencies are inferred from the claim text.