EP0886120B1 - Canon d'entraínement pour armes à feu muni d'une rampe d'alimentation de projectiles - Google Patents

Canon d'entraínement pour armes à feu muni d'une rampe d'alimentation de projectiles Download PDF

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Publication number
EP0886120B1
EP0886120B1 EP19980201674 EP98201674A EP0886120B1 EP 0886120 B1 EP0886120 B1 EP 0886120B1 EP 19980201674 EP19980201674 EP 19980201674 EP 98201674 A EP98201674 A EP 98201674A EP 0886120 B1 EP0886120 B1 EP 0886120B1
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EP
European Patent Office
Prior art keywords
barrel
protrusion
slide
training
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19980201674
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German (de)
English (en)
Other versions
EP0886120A1 (fr
Inventor
Sylvain Dionne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Dynamics Ordnance and Tactical Systems Canada Inc
Original Assignee
SNC Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SNC Technologies Inc filed Critical SNC Technologies Inc
Publication of EP0886120A1 publication Critical patent/EP0886120A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F41A3/82—Coil spring buffers
    • F41A3/86—Coil spring buffers mounted under or above the barrel
    • 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
    • F41A11/00—Assembly or disassembly features; Modular concepts; Articulated or collapsible guns
    • F41A11/02—Modular concepts, e.g. weapon-family concepts
    • 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
    • F41A33/00—Adaptations for training; Gun simulators
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/54—Cartridge guides, stops or positioners, e.g. for cartridge extraction
    • F41A9/55—Fixed or movable guiding means, mounted on, or near, the cartridge chamber

Definitions

  • This invention relates to the field of firearms and provisions for modifying semi-automatic firearms for training purposes.
  • it relates to reliable chambering of ammunition in blow-back firearms that have been modified to fire low-energy ammunition.
  • An advantage of the low-energy training ammunition is that it has a shorter range and lower penetration capacity than standard ammunition. This permits use of smaller, less secure firing ranges as training facilities. If standard ammunition were accidentally employed in these facilities, unexpected dangers would arise from the increased striking power and range of standard ammunition.
  • the weapon modifications required to permit cycling while firing low-energy training ammunition generally include replacing or modifying the barrel and sometimes replacing or adding one or two other components, depending on the weapon involved. These modifications also serve to increase safety.
  • the calibre of the substitute barrel may be smaller than the diameter of the projectiles in standard 9 mm ammunition. If an attempt is made to chamber a standard round in such a training-adapted firearm, the barrel will not normally admit entry of the standard projectile. This ensures that such modified weapons cannot fire standard, live ammunition.
  • the low-energy cartridge represented by United States Patent No. 5,359,937 in combination with a substitute training barrel, allows normal recoil and cartridge case ejection through a blow-back action.
  • a locking mechanism couples the slide and barrel together for the first portion of the recoil, and then releases the slide. Upon unlocking, the slide continues its rearward travel while the barrel stops in the proper position to receive the next round from the magazine to be chambered.
  • a training barrel of the type addressed by this invention is similar in most aspects to the standard barrel for a particular breech-locked pistol but is modified, in part, by removing the locking mechanism that holds the barrel and slide together for the first portion of the recoil cycle.
  • US-A-4907362 discloses a sub-calibre firearm in which there is provided an interchangeable barrel with an integral feed ramp and a feed spacer element affixed to the integral feed by welding, casting, silver soldering or pinning.
  • This invention is directed to certain semi-automatic pistols, especially those where the recoil spring is located under the barrel, which are adapted to fire low-energy training ammunition by the substitution of a training barrel that omits the breech-lock feature normally present. It provides a system for ensuring proper chambering of ammunition by fitting a removable ramp extension to the breech end of the training barrel, such extension extending rearward towards the top of the magazine in such a fashion as to allow smooth passage from the magazine to the chamber of the next round to be fired. Without this ramp extension, the barrel breech would be too far forward from the top of the magazine and the incoming cartridge would not necessarily enter the chamber cleanly, hence provoking a weapon jam whenever such misalignment should occur.
  • a training barrel for an automatic firearm comprising:
  • the protrusion conveniently provides a stop for positioning of the barrel against the frame of a pistol.
  • the training barrel may be used in combination with a firearm with a frame having a slide that is free to move rearwardly with respect to the barrel, and wherein the feed ramp extension is contained laterally by a groove formed in the upper side of the recess.
  • the protrusion may carry an upwardly oriented third containment surface, said third containment surface opposing in part said first containment surface to further contain said feed ramp extension against displacement in the vertical direction.
  • the training barrel is used in combination with a firearm comprising:
  • this invention provides a firearm comprising:
  • the feed ramp extension may be contained laterally within the recess by a groove formed in the upper side of the recess.
  • the invention extends to a firearm wherein the barrel has a chamber with a round positioned in said chamber, whereby the slide will cycle by a blow back action upon firing.
  • the round may be a training round operable to fire a low mass projectile, such as a low energy round as represented by US Patent No. 5,359,937.
  • a firearm is provided with a slide and a training barrel which at no time are locked together during the firing cycle.
  • the training barrel is provided with a removable feed ramp extension protruding rearward from the barrel towards the magazine. The length of this extension is such that its rearward end is sufficiently close to the top of the magazine that, when it is time to chamber the next round to be fired, the nose of the round is guided smoothly into the chamber by the extension as the slide moves forward into the firing position.
  • the feed ramp extension is removable so as to allow the training barrel/feed ramp extension to be assembled into the slide and frame without modification to either the slide or the frame.
  • some barrel designs include a protrusion in the form of a rear lug into which the feed ramp extension may be fitted.
  • a feed ramp extension removably fitted to the rear lug of a training barrel constitutes an ammunition chambering mechanism.
  • the rear lug on a barrel of a typical weapon addressed by the invention will usually abut at its forward end the barrel locking pin.
  • the training barrel is at its farthest forward position and is held there against the locking pin by the slide.
  • the slide recoils without pulling the barrel back with it, even though there is nothing obstructing rearward motion of the barrel, because the two pieces (slide and barrel) are not locked together.
  • the slide reaches its maximum rearward travel and it is time to chamber the next round from the magazine, the gap between the top of the magazine and the entrance to the chamber is filled by the feed extension ramp described above, which smoothly guides the round forward into the chamber as the slide returns to close the breech.
  • a rearward facing slot or recess is formed in the rear lug of the training barrel, which matches and receives the forward portion of the extension.
  • the rearward end of the extension in the form of a smooth concave groove with a diameter approximately that of the outer diameter of the cartridge case of the ammunition to be chambered, will then protrude downwards and rearwards at such an angle, and be of such length, that its rearward face falls just short of, and slightly below, the top of the magazine.
  • FIG 1 a prior art 9 mm pistol is shown having barrel 1 and slide 2 with normal locking between the two components, and magazine 4 containing standard service ammunition 5.
  • the weapon is ready to fire with a cartridge 5 chambered in chamber 1A and slide 2 all the way forward, and the barrel lug 8A resting against the locking pin 3.
  • the slide 2 recoils, compressing recoil springs 15, and Figure 2 depicts it in its most rearward position with the spent case from the round just fired already ejected from the weapon and the next round to be chambered having been thrust upwards by magazine 4 almost into line with chamber 1a while awaiting the return of slide 2 to push it forward into chamber 1A and close breech 2A.
  • the nose 5A of the projectile of cartridge 5 to be chambered is very close to the entrance or breech 2A of chamber 1A, and hence will experience no difficulty in smoothly moving forward into chamber 1A for proper chambering.
  • Barrel 1 is so propitiously placed because it has been carried back to this position from locking pin 3 within frame 12 by slide 2, to which it was locked during the first portion of the firing cycle.
  • FIG. 1 When this pistol is converted to fire low-energy ammunition 9 as represented by United States Patent No. 5,359,937, barrel 1 is replaced by training barrel 6 in conjunction with feed ramp extension 7, as shown in Figure 3 with the pistol ready to fire (as in Figure 1).
  • Figure 4 depicts the same situation for the training configuration of the weapon as does Figure 2 for the standard weapon.
  • slide 2 is fully rearward and the next round of training ammunition 9 is in position to be chambered by the returning slide 2 moving under the urging of the resilient spring 15. Since barrel 6 does not move rearwards during firing, remaining abutted against locking pin 3 because there is no locking with slide 2, the resulting large gap between the breech 6B and the nose 9A of the projectile of cartridge 9 to be chambered is filled by feed ramp extension 7.
  • Round 9 will, therefore, be smoothly guided by extension 7 into chamber 6A when slide 2 moves forward to chamber round 9 and close breech 6B.
  • Feed ramp extension 7 is slidingly fitted into a recess 14 formed within lug or protrusion 8 of training barrel 6 as shown in Figure 5.
  • the extension 7 has an upwardly facing guide surface 11 which serves to guide a round 9 into position as it is being chambered within barrel 6. Lateral movement of the extension 7 in barrel 6 is prevented by its being situated within groove 10 located on the upper side of the recess 14, at the rearward end of barrel 6, as depicted in Figure 6.
  • the fit between barrel 6 and extension 7 is preferably a sliding one to permit the assembly of barrel 6 and extension 7 into slide 2; if the extension 7 were an integral part of the barrel 6, in many weapons this would not be possible due to the design of slide 2. Longitudinal motion of extension 7, once assembled both in barrel 6 and with slide 2 in place, is restricted at its front end by the forward end of groove 10 and, at its rearward end, by a portion of the frame 12 of the pistol.
  • the functioning of the subject ammunition chambering mechanism has been tested many hundreds of times in Sig 225 pistols with complete success and reliability.
  • the ammunition chambering mechanism of the invention is particularly suited for training barrels for such 9 mm semi-automatic pistols as the Sig 255, but also aids in the chambering of training ammunition in modified Sig 226, 228 and 229 pistols as well as being applicable to other semi-automatic firearms that fire low-energy ammunition as represented by United States Patent No. 5,359,937.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Claims (10)

  1. Canon d'entraínement (6) pour une arme à feu automatique, comprenant :
    (i) un canon (6) présentant des extrémités avant et arrière ;
    (ii) une saillie (8) s'étendant à partir du canon ; et
    (iii) une extension (7) de rampe de chargement, positionnée à l'extrémité arrière de la saillie (8), une telle extension de rampe (7) ayant une surface de guidage (11) tournée vers le haut pour guider une cartouche (9), alors qu'elle est chambrée dans le canon (6) lors de l'utilisation,
    caractérisé par le fait que la saillie (8) présente une cavité (14) dirigée vers l'arrière et l'extension (7) de rampe de chargement est dimensionnée pour être adaptée de façon amovible dans la cavité de saillie (14).
  2. Canon d'entraínement (6) selon la revendication 1, dans lequel la saillie (8) fournit un arrêt pour le positionnement du canon (6) contre le châssis (12) d'un pistolet.
  3. Canon d'entraínement (6) selon la revendication 1 ou la revendication 2, en combinaison avec une arme à feu présentant un châssis (12) ayant une coulisse (2) qui est libre de se déplacer vers l'arrière par rapport au canon (6), et dans lequel l'extension (7) de rampe de chargement est contenue latéralement par une rainure (10) formée dans le côté supérieur de la cavité (14).
  4. Canon d'entraínement (6) selon l'une quelconque des revendications 1 à 3, dans lequel :
    (i) ladite saillie (8) s'étend vers le bas à partir du canon (6) à proximité de ladite extrémité arrière du canon (6) pour servir de poteau de montage pour l'extension (7) de rampe de chargement ;
    (ii) la cavité (14) tournée vers l'arrière dans ladite saillie (8) étant définie par :
    (a) une première surface de confinement, tournée vers le bas, formée sur le côté inférieur du canon (6), à l'arrière de ladite saillie (8) ;
    (b) une seconde surface de confinement, tournée vers l'arrière, portée par ladite saillie (8) et définissant l'extrémité intérieure verticale de la cavité (14) ; et
    (iii) ladite extension (7) de rampe de chargement est positionnée à l'intérieur de ladite cavité (14) et s'étend à l'arrière de celle-ci à l'extrémité arrière du canon (6), ladite première surface de confinement résidant à l'intérieur d'une rainure (10) orientée longitudinalement, située sur le côté supérieur de la cavité (14) à l'extrémité arrière du canon (6), et l'extension (7) de rampe de chargement étant adaptée de façon coulissante dans et contenue latéralement par ladite rainure (10) et venant en butée longitudinalement contre ladite seconde surface de confinement.
  5. Canon d'entraínement selon la revendication 4, comprenant une troisième surface de confinement, orientée vers le haut, portée par ladite saillie (8), ladite troisième surface de confinement s'opposant en partie à ladite première surface de confinement pour contenir encore ladite extension (7) de rampe de chargement à l'encontre d'un déplacement dans la direction verticale.
  6. Canon d'entraínement selon la revendication 4 ou la revendication 5, en combinaison avec une arme à feu comprenant :
    (i) un châssis d'arme à feu (12) portant ledit canon d'entraínement (6) avec la saillie (8) positionnée contre le châssis (12) pour limiter le mouvement du canon (6) par rapport au châssis (12) ;
    (ii) une coulisse (2) montée sur le châssis (12) libre pour un déplacement en coulissement, indépendamment du canon (6) d'une position en batterie lorsque la coulisse (2) porte contre le canon (6) à une position à l'arrière du canon (6) ; et
    (iii) un moyen élastique (15) sollicitant la coulisse vers l'avant, en direction de ladite position en batterie.
  7. Arme à feu comprenant :
    (i) un châssis (12) ;
    (ii) un canon (6) avec des extrémités avant et arrière montées sur le châssis (12) avec le canon positionné contre le châssis (12) pour empêcher un déplacement vers l'avant du canon (6) par rapport au châssis (12) ;
    (iii)une coulisse (2) montée sur le châssis (12) libre pour un déplacement en coulissement, indépendamment du canon (6), d'une position de batterie lorsque la coulisse (2) porte contre le canon (6) à une position à l'arrière du canon (6) ;
    (iv) un moyen élastique (15) sollicitant la coulisse (2) vers l'avant, en direction de la position de batterie ;
    (v) une saillie (8) s'étendant vers le bas à partir du canon (6) ;
    (vi) une extension (7) de rampe de chargement, positionnée à l'arrière de et adjacente à la saillie (8), ladite extension (7) de rampe de chargement étant dotée d'une surface de guidage (11) tournée vers le haut pour guider une cartouche (9) alors qu'elle est chambrée dans le canon (6) ;
    caractérisée par le fait que la saillie (8) présente une cavité (14) dirigée vers l'arrière et l'extension (7) de rampe de chargement est dimensionnée pour être adaptée de façon coulissante dans la cavité de saillie (14).
  8. Arme à feu selon la revendication 7, dans laquelle l'extension (7) de rampe de chargement est contenue latéralement à l'intérieur de la cavité (14) par une rainure (10) formée dans le côté supérieur de la cavité (14).
  9. Arme à feu selon la revendication 7 ou la revendication 8, dans laquelle ledit canon a une chambre (6A) avec une cartouche (9) positionnée dans ladite chambre, ce par quoi la coulisse se recyclera par une action de recul lors de la mise à feu.
  10. Arme à feu selon la revendication 9, dans laquelle ladite cartouche (9) est une cartouche d'entraínement actionnable pour tirer un projectile de faible masse.
EP19980201674 1997-05-23 1998-05-20 Canon d'entraínement pour armes à feu muni d'une rampe d'alimentation de projectiles Expired - Lifetime EP0886120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US86307897A 1997-05-23 1997-05-23
US863078 1997-05-23

Publications (2)

Publication Number Publication Date
EP0886120A1 EP0886120A1 (fr) 1998-12-23
EP0886120B1 true EP0886120B1 (fr) 2003-07-30

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EP19980201674 Expired - Lifetime EP0886120B1 (fr) 1997-05-23 1998-05-20 Canon d'entraínement pour armes à feu muni d'une rampe d'alimentation de projectiles

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EP (1) EP0886120B1 (fr)
DE (1) DE69816722T2 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004047628B4 (de) * 2004-09-30 2008-09-18 Heckler & Koch Gmbh Waffensimulator und Feuerwaffe dafür
DE102016009046A1 (de) * 2016-07-25 2018-01-25 Thomas Weinland Rohrwaffe mit Rückstoßdämpfer
US11187478B2 (en) 2016-07-25 2021-11-30 Thomas Weinland Barreled firearm, in particular pistol, having a recoil damper
DE102016009047B3 (de) 2016-07-25 2018-01-11 Thomas Weinland Rohrwaffe mit Rückstoßdämpfer
CN111256526B (zh) * 2020-03-20 2023-07-21 重庆建设工业(集团)有限责任公司 一种伸缩管式供弹导引机构及导引方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1207798B (it) * 1987-05-12 1989-06-01 Atis Spa Fucile a pompa con caricatore prismatico.
US4907362A (en) * 1988-03-08 1990-03-13 Hobbie Edward H Sub-caliber firearm
IL97632A (en) 1990-03-22 1994-05-30 Snc Ind Technologies Inc Reduced energy
DE19501397C2 (de) * 1995-01-18 1999-03-25 Heckler & Koch Gmbh Munitionstransport in einer Mehrladewaffe

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Publication number Publication date
DE69816722T2 (de) 2004-04-15
DE69816722D1 (de) 2003-09-04
EP0886120A1 (fr) 1998-12-23

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