FR2633709A1 - Improved weapon barrel of the type comprising vent holes - Google Patents

Improved weapon barrel of the type comprising vent holes Download PDF

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Publication number
FR2633709A1
FR2633709A1 FR8808916A FR8808916A FR2633709A1 FR 2633709 A1 FR2633709 A1 FR 2633709A1 FR 8808916 A FR8808916 A FR 8808916A FR 8808916 A FR8808916 A FR 8808916A FR 2633709 A1 FR2633709 A1 FR 2633709A1
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France
Prior art keywords
barrel
vent holes
weapon
holes
type
Prior art date
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Granted
Application number
FR8808916A
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French (fr)
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FR2633709B1 (en
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Individual
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Individual
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Priority to FR8808916A priority Critical patent/FR2633709B1/en
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Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41AFUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/28Gas-expansion chambers; Barrels provided with gas-relieving ports

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)

Abstract

The invention relates to an improved weapon barrel. According to the invention, the barrel comprising vent holes 8, 9 is characterised in that the said holes open out inside the barrel 2 in a direction substantially parallel to that of the riflings 3 of the barrel. The invention particularly prevents the bullets from being stripped of their jacket.

Description

L'invention a pour objet un canon d'arme perfectionne du type comportant au voisinage de son extrémité de sortie des trous d'évént.  The subject of the invention is an improved weapon barrel of the type comprising, near its exit end, event holes.

IL est connu de pratiquer au vcisinage de
L'extrémité de sortie du canon d'une arme, par exemple d'un fusil des trous d'event, de façon à réduire les effets de recul, de soulèvement et de bruit de L'arme au novent du tir. Un dispositif de ce type est decrit notaient au brevet US 3 808 943.
It is known to practice in the vcisinage of
The exit end of the barrel of a weapon, for example of a rifle of the holes of vent, so as to reduce the effects of recoil, lifting and noise of the weapon at the novent of the shooting. A device of this type is described noted in US Patent 3,808,943.

L'inconvénient d'un tel dispositif est qu'il favorise un déchemisage de La balle, du fait des effets induits de variation brutale de pression lorsque la balle passe au niveau des trous d'évent.  The disadvantage of such a device is that it favors a dismantling of the ball, due to the induced effects of sudden variation in pressure when the ball passes through the vent holes.

L'invention a pour objet d'éviter cet inconvénient. The object of the invention is to avoid this drawback.

Conformément à L'invention il a été constaté que l'effet de decheoisage de la balle était évité s'il
L'on prenait soin d!eviter que Les évents débouchent à L'intérieur du canon de l'arme en coupant ou chevauchant
Les rayures. En d'autres termes1 un canon d'arme perfectionne du type comportant des trous d'évent se caracterise selon l'5nvention en ce que lesdits trous débouchent à l'intérieur du canon de l'arme selon une direction sensiblement parallèle à ceLle des rayures du canon.
In accordance with the invention, it has been observed that the effect of stripping the ball is avoided if it
Care was taken to avoid the vents opening into the interior of the barrel of the weapon by cutting or overlapping
The stripes. In other words, 1 an improved weapon barrel of the type comprising vent holes is characterized according to the invention in that said holes open out inside the barrel of the weapon in a direction substantially parallel to that of the scratches. from the barrel.

Selon une réalisation, lorsque Lesdits trous d'event sont de forte oblongue, la direction de Leur plus grande longueur est choisie sensiblement parallèle à celle des rayures du canon. According to one embodiment, when said vent holes are very oblong, the direction of their greatest length is chosen to be substantially parallel to that of the barrel scratches.

L'invention et sa mise en oeuvre apparaîtront plus clairement à L'aide de la description qui va suivre faite en référence aux dessins annexes dans Lesquels
- les figures 1, et 3 illustrent un canon de fusiL comportant des trous devent réalisés selon l'art antérieur, par exemple conformément au brevet
US sus-mentionné 3 808 943, La figure 1 montrant en vue perspective L'extrémité du canon du fusil, la figure 2 étant une vue en coupe de La figure 1 seLon le plan
II-II de cette figure, et La figure 3 une vue de dessus selon la flèche III de La figure I ;
- La figure 4 montre comme La figure 3 une vue de dessus de L'extrémité du canon comportant des évents orientes selon L'invention ;
- la figure 5 montre comme la figure 4 une variante de réalisation des évents.
The invention and its implementation will appear more clearly with the aid of the description which will follow made with reference to the accompanying drawings in which
- Figures 1, and 3 illustrate a fusiL barrel having devent holes made according to the prior art, for example according to the patent
US above 3 808 943, Figure 1 showing in perspective view The end of the rifle barrel, Figure 2 being a sectional view of Figure 1 according to the plan
II-II of this figure, and Figure 3 a top view along arrow III of Figure I;
- Figure 4 shows like Figure 3 a top view of the end of the barrel having oriented vents according to the invention;
- Figure 5 shows like Figure 4 an alternative embodiment of the vents.

On rappellera tout d'abord brièvement l'état de l'art antérieur tel qu'illustre aux figures 1 à 3. The state of the prior art will first be briefly recalled as illustrated in FIGS. 1 to 3.

L'extrémité 1 du canon d'un fusil comporte
Le canon proprement dit 2 formé avec des rayures internes 3 dont Les directions ont ete repérées en trait fin à
La figure 3. A L'extrémité supérieure du canon du fusil apparat en 4 le guidon et de part et d'autre de ce guidon deux trous devent 5, 6 dirigés parallèlement à L'axe 7 de L'arme dans des plans sensiblement radiaux tel qu'il apparat plus clairement à la figure 2.
The end 1 of the barrel of a rifle comprises
The barrel proper 2 formed with internal stripes 3, the directions of which have been marked in thin lines at
Figure 3. At the upper end of the rifle barrel appears in 4 the handlebars and on either side of this handlebars two vent holes 5, 6 directed parallel to the axis 7 of the weapon in substantially radial planes as shown more clearly in Figure 2.

Etant donné L'obliquité des rayures en hélice 3 du fût du canon, les trous devent 5, 6 coupent nécessairement
Les rayures.
Given the obliquity of the helical stripes 3 of the barrel, the holes 5, 6 necessarily cut
The stripes.

Conformément à L'invention, et comme illustré à La figure 4, les évents 8, 9 sont modifiés. Dans l'exemple illustré à la figure 4 les évents ont une forme oblongue sensiblement trapézoïdale et ils sont formés de telle sorte qu'ils débouchent à L'intérieur du fOt du canon du fusil selon une direction sensiblement parallèle à celle des rayures 3 du canon. Bien entendu, bien que cela n'ait pas été illustré sur le dessin, les trous devent 8, 9 peuvent euxmenes avoir une forme gauche ou hélicoïdale de telle sorte qu'ils peuvent déboucher à l'air libre sur le dessus du fût du canon en étant diriges sensiblement parallèlement à l'axe 7 du fOt du canon, l'essentiel étant qu'au niveau de leur débouché à L'intérieur du canon du fusil, celuici se fasse selon une direction sensiblement parallèle. à celLe des rayures du canon. En procédant de cette façon il a ete constate qu'il n'y avait plus d'effet sensible de déchemisage de La balle induit par la prévision de ces évents. Et bien entendu Les effets positifs de réduction de bruit, de recul de L'arme et de moindre saut au moment du tir restent acquis. In accordance with the invention, and as illustrated in FIG. 4, the vents 8, 9 are modified. In the example illustrated in Figure 4 the vents have an oblong shape substantially trapezoidal and they are formed so that they emerge inside the barrel of the rifle in a direction substantially parallel to that of the stripes 3 of the barrel . Of course, although this has not been illustrated in the drawing, the ventilation holes 8, 9 can themselves have a left or helical shape so that they can open out onto the top of the barrel in the open air. by being directed substantially parallel to the axis 7 of the barrel end, the main thing being that at their outlet inside the rifle barrel, this takes place in a substantially parallel direction. to that of the barrel scratches. By proceeding in this way, it was noted that there was no longer any significant effect of shredding of the ball induced by the forecast of these vents. And of course The positive effects of noise reduction, recoil of the weapon and less jump when fired remain acquired.

Dans L'exemple illustre à La figure 4 deux évents sont prévus de chaque coté du plan médian vertical de l'arme contenant La hausse 4. In the example illustrated in Figure 4 two vents are provided on each side of the vertical median plane of the weapon containing the rise 4.

Dans la variante de réalisation illustrée à La figure 5, Les trous oblongs 8, 9 sont remplacés par une succession de quatre forages 18, 19 d'effet équivalent. Corme indique précédmment, ces forages peuvent être réalisés obliquement dans l'arme, de sorte qu'ils déboucheront les uns derrière Les autres à l'intérieur du fOt du canon selon une direction sensiblement parallèle à celle des rayures 3 du canon, pouvant au contraire déboucher au-dessus de L'arme selon des directions parallèles à son plan médian.  In the alternative embodiment illustrated in Figure 5, the oblong holes 8, 9 are replaced by a succession of four holes 18, 19 of equivalent effect. Corme indicates previously, these drillings can be carried out obliquely in the weapon, so that they will emerge one behind the others inside the barrel end in a direction substantially parallel to that of the stripes 3 of the barrel, being able on the contrary emerge above the weapon in directions parallel to its median plane.

Bien qu'on ait decrit une réalisation de l'invention en relation avec un canon de fusil, L'invention peut s'appliquer à tout type d'arme en général, et les évents peuvent etre ménagés sur le canon en tout point intermédiaire entre La chambre de compression de l'arme et sa bouche.  Although an embodiment of the invention has been described in relation to a rifle barrel, the invention can be applied to any type of weapon in general, and the vents can be provided on the barrel at any intermediate point between The compression chamber of the weapon and its mouth.

Claims (4)

REVENDICATIONS 1. - Canon d'arme perfectionne du type comportant des trous d'event, caractérisé en ce que Lesdits trous (8, 9, 18, 19) débouchent à L'intérieur du canon (2) de l'arme selon une direction sensibLement parallèle à celle des rayures (3) du canon. 1. - Improved weapon barrel of the type comprising vent holes, characterized in that said holes (8, 9, 18, 19) open inside the barrel (2) of the weapon in a substantially sensitive direction parallel to that of the barrel stripes (3). 2. - Canon selon la revendication 1 caractérisé en ce que lesdits trous d'event (8, 9) sont de forme oblongue, la direction de leur plus grande Longueur etant sensibLement parallèle à celle des rayures (3) du canon. 2. - Barrel according to claim 1 characterized in that said vent holes (8, 9) are oblong, the direction of their greatest length being sensitLly parallel to that of the scratches (3) of the barrel. 3. - Canon selon la revendication 1 ou la revendication 2 caractérisé en ce que lesdits trous d'event (8, 9, 18, 19) sont formés sur le dessus du canon sensiblement de part et d'autre du plan médian vertical du canon. 3. - Cannon according to claim 1 or claim 2 characterized in that said vent holes (8, 9, 18, 19) are formed on the top of the barrel substantially on either side of the vertical median plane of the barrel . 4. - Canon selon L'une des revendications précédentes caractérisé en ce que plusieurs trous d'évent (18, 19) sont formes en succession les uns derriere les autres débouchant à L'intérieur du canon selon une direction sensiblement parallèle à celle des rayures (3) du canon.  4. - Barrel according to one of the preceding claims characterized in that several vent holes (18, 19) are formed in succession one behind the other opening inside the barrel in a direction substantially parallel to that of the stripes (3) of the barrel.
FR8808916A 1988-07-01 1988-07-01 IMPROVED WEAPON CANNON OF THE TYPE HAVING VENT HOLES Expired - Fee Related FR2633709B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8808916A FR2633709B1 (en) 1988-07-01 1988-07-01 IMPROVED WEAPON CANNON OF THE TYPE HAVING VENT HOLES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8808916A FR2633709B1 (en) 1988-07-01 1988-07-01 IMPROVED WEAPON CANNON OF THE TYPE HAVING VENT HOLES

Publications (2)

Publication Number Publication Date
FR2633709A1 true FR2633709A1 (en) 1990-01-05
FR2633709B1 FR2633709B1 (en) 1993-06-18

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FR8808916A Expired - Fee Related FR2633709B1 (en) 1988-07-01 1988-07-01 IMPROVED WEAPON CANNON OF THE TYPE HAVING VENT HOLES

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003044442A2 (en) * 2001-11-16 2003-05-30 Nibecker Alfred E Jr Air gun
WO2003076864A1 (en) * 2002-03-13 2003-09-18 Ordnance Development And Engineering Company Of Singapore (1996) Pte Ltd Recoil mitigation mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1168622A (en) * 1957-02-19 1958-12-11 Method and device for improving the accuracy of projectiles
US4058050A (en) * 1976-07-19 1977-11-15 Dan Wesson Arms, Inc. Gun leveling device
US4322999A (en) * 1979-08-13 1982-04-06 Aston Thomas M Stabilizing vent system for gun barrels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1168622A (en) * 1957-02-19 1958-12-11 Method and device for improving the accuracy of projectiles
US4058050A (en) * 1976-07-19 1977-11-15 Dan Wesson Arms, Inc. Gun leveling device
US4322999A (en) * 1979-08-13 1982-04-06 Aston Thomas M Stabilizing vent system for gun barrels

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003044442A2 (en) * 2001-11-16 2003-05-30 Nibecker Alfred E Jr Air gun
WO2003044442A3 (en) * 2001-11-16 2003-11-27 Alfred E Nibecker Jr Air gun
US6957646B2 (en) 2001-11-16 2005-10-25 Nibecker Jr Alfred F Pump
WO2003076864A1 (en) * 2002-03-13 2003-09-18 Ordnance Development And Engineering Company Of Singapore (1996) Pte Ltd Recoil mitigation mechanism

Also Published As

Publication number Publication date
FR2633709B1 (en) 1993-06-18

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