Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
  • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
  • F41A5/02—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated
  • F41A5/04—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated the barrel being tilted during recoil
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
  • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
  • F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
  • F41A21/488—Mountings specially adapted for pistols or revolvers
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
  • F41A3/00—Breech mechanisms, e.g. locks
  • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
  • F41A3/78—Bolt buffer or recuperator means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F41—WEAPONS
  • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
  • F41A3/00—Breech mechanisms, e.g. locks
  • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
  • F41A3/66—Breech housings or frames; Receivers

Definitions

• the invention relates to an assembly of a barrel, a container/frame and a breech block for self-loading pistols with the breech block mechanism locked by barrel drop, the barrel and the breech block being movabiy accommodated in the container/frame wherein the barrel has a front part and a rear part, and a control block of the barrel is arranged under the rear part and a hook is arranged in the region of the control block of the barrel on the container/frame.
• Self-locking pistols locked by barrel drop represent a proven and advanced solution.
• this mechanism for applications of this mechanism for the purposes of high- performance cartridges as e.g. 9x19 NATO in their ballistically efficient modifications there is a problem of a great excess of recoil energy within the pistol mechanism, especially in the region of the barrel stop, Le. in the location where the barrel stops its movement after its short recoil.
• the breech block mechanism locked by barrel drop (Browning-Colt) is based on being driven by the recoil caused by a shot. After the shot, the barrel is locked to the breech block. Due to the recoil of the shot, the barrel together with the breech blocks performs a common, generally linear movement, referred to as a short rearward slide. The length of this movement is designed is such a manner to allow the projectile to leave the barrel in its course. Then, unlocking of the barrel is commenced. As soon as the barrel is unlocked, its movement is stopped and it is only the breech block that continues moving.
• a technical problem occurs with ballistically efficient cartridges, namely a problem in the region of stopping the movement of the barrel.
• Such efficient cartridges impart such an amount of energy to the entire “barrel - breech block” recoil system that at the moment it needs to be stopped, the barrel still has so much energy that in the case of the traditional solution (Browning-Colt) there is an excessive recoil
• This recoil is so significant that it considerably decreases the achievable cyclic service life of both the barrel and its stop (generally the frame, or container or block inside the frame).
• the solution must be simple to produce as well as to operate.
• the said object is achieved by an assembly of a barrel, a container/frame and a breech block for self-loading pistols with the breech block mechanism locked by barrel drop, the barrel and the breech block being movably accommodated in the container/frame wherein the barrel has a front part and a rear part and a control block of the barrel is arranged under the rear part and a hook is arranged in the region of the control block of the barrel on the container/frame.
• the principle of which is that the control block of the barrel is constituted by a recess that comprises a front inclined control surface that passes into a locking brace and at a distance, at least around a part of the locking brace, at least one bearing surface is arranged to stop the movement of the barrel.
• the hook comprises a blade for cooperation with the control surface of the control block of the barrel
• the blade has an adjacent shapes surface for cooperation with the locking brace of the control block of the barrel.
• At least a part of the shaped surface at least one stop surface is arranged to absorb the impact of the barrel.
• the stop surface is oriented with respect to the shaped surface in such a way that in the fully unlocked state of the barrel, the stop surface of the hook bears on the bearing surface of the control block of the barrel while between the control surface and locking brace of the control block of the barrel at one side and the front face of the blade and the shaped surface of the hook at the other side, there is a play.
• An advantage of the solution according to the invention is that the recoil is distributed and is not concentrated onto the same surfaces as in prior-art solutions. This is achieved by separation of the barrel unlocking/iocking function from the barrel stop function to the container/frame. This way, a considerable increase of cyclic service life of parts is achieved, especially of the barrel and container/frame of the pistol.
• the assembly according to the invention is suitable for self-locking pistols with a breech block mechanism locked by barrel drop that may have a plastic frame and a container (block), or an all-metal frame, and thus not having a container/block.
• this part is thus referred to as the container/frame 4.
• the barrel 2 and the breech block 1 are movably accommodated in the container/frame 4.
• the barrel 2 has the front part 205 and rear part 206 under which the control block 201 of the barrel is arranged (see fig. 1). In the region of the control block 201 of the barrel, a hook 401 is arranged on the container/frame 4 (see fig. 6).
• the control block 201 of the barrel is constituted by a recess that comprises the front inclined control surface 202 that passes into a locking brace 203 (see figs. 2, 4 and 5), and at a distance, at least around a part of the locking brace 203, at least one bearing surface 204 for stopping the movement of the barrel 2 is arranged (see fig. 3).
• the hook 401 on the container/frame 4 comprises a blade 402 for cooperation with the control surface 202 of the control block 201 of the barrel, and the blade 402 has an adjacent shaped surface 403 for cooperation with the locking brace 203 of the control block 201 wherein around at least a part of the shaped surface 403, at least one stop surface 404 is arranged to absorb the impact of the barrel 2.
• there are two stop surfaces 404 which are arranged symmetrically around the shaped surface 403 (see fig. 8).
• the stop surfaces 404 are oriented with respect to the shaped surface 403 in such a way that in the fully unlocked condition of the barrel 2, the stop surfaces 404 of the hook 401 bear on the bearing surfaces 204 of the control block 201 of the barrel while between the control surface 202 and locking brace 203 of the control block 201 of the barrel at one side and the front face of the blade 402 and the shaped surface 403 of the hook 401 at the other side, there is a play.
• the first one always presents a weapon with the inventive assembly shown in a cross-section through the control surface 202 a blade 402 white in the other one, this assembly is in the same position, but shown in a cross-section through the bearing surface 204 and step surface 404.
• figs. 9 and 10 show the assembly according to the invention in the state the weapon is ready to shoot.
• the barrel 2 is locked to the breech block 1 .
• Figs. 11 and 12 show the weapon during shooting when due to the shot, the breech block 1 with the barrel 2 starts to move rearwards by action/ reaction from the acceleration of the projectile in the barrel 2.
• the breech block 1 with the barrel 2 gain considerable kinetic energy.
• Figs. 13 and 14 show the weapon at the start of unlocking the barrel 2.
• the control surface 202 gets in contact with the blade 402, initiating controlled unlocking of the barrel 2.
• Figs. 15 and 16 show- the weapon on stopping the barrel 2.
• Kinetic energy of the barrel 2 is consumed by stoppage of its movement.
• the breech block 1 continues moving and performs its further well-known tasks.
• This abrupt and quick stop of the barrel 2 causes considerable stressing by impact in the regions of the control block 201 of the barrel and in the region of the hook 401, which may even lead to undesired premature destructions.
• the solution according to the invention reduces this loading by distributing the load to more areas.
• the barrel 2 achieves this by a division in the region of the control block 201 of the barrel to the control part, which is constituted by the control surface 202 and the locking brace 203, and which controls locking/unlocking of the barrel 2, and to the bearing surface 204, which absorbs the impact.
• this is also achieved by the division of the region of the hook 401 to the control part, which is constituted by the blade 402 and shaped surface 403, and the stop part, which is constituted by the stop surface 404.
• Detail D of figs 15 and 16 is shown in figs. 19, 20.
• Figs. 17 and 18 show the weapon on stopping the barrel 1 at the rear dead center.
• Kinetic energy of the breech block 1 is released by its stop at the rear functional dead center.
• This is the second source of load for the entire region of the control block 201 of the barrel and hook 401.
• This abrupt and quick stop of the breech block 1 causes stressing by impact in the regions of the control block 201 of the barrel and in the region of the hook 401 , which may even lead to undesired destructions.
• the solution according to the invention reduces this loading by distribution to more areas.
• the limitation and reduction of the influence of this load works identically as in the case of the barrel 2 stop described with reference to figs. 15 and 16.
• the solution according to the invention (see fig.
• the sizing of the dimensions and tolerances again guarantees a play between the remaining control parts, i.e between the control surface 202, the blade 402 and the locking brace 203, and the shaped surface 403.
• the stop surface 404 of the hook 401 bears on the bearing surface 204 of the control block 201 of the barrel while between the control surface 202 and locking brace 302 of the control block 201 of the barrel at one side and the front face of the blade 402 and the shaped surface 403 of the hook 401 at the other side, there is a play.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Toys (AREA)

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Citations (7)

Family Cites Families (1)

• 2023
  • 2023-04-19 CZ CZ2023-156A patent/CZ2023156A3/cs unknown
• 2024
  • 2024-03-28 WO PCT/CZ2024/000011 patent/WO2024217609A1/en active Pending

Patent Citations (10)

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