EP0151112A1 - Stabilisateur d'arme et reducteur de recul - Google Patents

Stabilisateur d'arme et reducteur de recul

Info

Publication number
EP0151112A1
EP0151112A1 EP19830902484 EP83902484A EP0151112A1 EP 0151112 A1 EP0151112 A1 EP 0151112A1 EP 19830902484 EP19830902484 EP 19830902484 EP 83902484 A EP83902484 A EP 83902484A EP 0151112 A1 EP0151112 A1 EP 0151112A1
Authority
EP
European Patent Office
Prior art keywords
spent gas
bullet
chamber
opening
gas
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.)
Withdrawn
Application number
EP19830902484
Other languages
German (de)
English (en)
Inventor
Vito Cellini
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.)
CELLINI INDUSTRIES
Original Assignee
CELLINI INDUSTRIES
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 CELLINI INDUSTRIES filed Critical CELLINI INDUSTRIES
Publication of EP0151112A1 publication Critical patent/EP0151112A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/32—Muzzle attachments or glands
    • F41A21/36—Muzzle attachments or glands for recoil reduction ; Stabilisators; Compensators, e.g. for muzzle climb prevention

Definitions

  • the term "spent" gas refers to those erases burned and unburned powder particles which escape from the muzzle after accellerating the projectile to muzzle velocity, such gases being formed in the explosion of the powder charge in a cartidge and which may also include the primary percussion cap and the like. These gases which are expanding on the firing of the cartridge accellerate the bullet or projectile to t he required muzzle velocity, the force due to gas pressure developed by the explosive acting for a certain period of time with the force multiplied by the length of time that it is acting being called “impulse" and is equal to the mass of the projectile multiplied by its muzzle velocity.
  • the propulsion force of escaping gases which creates recoil is equal to the mass of the gas discharge per unit of time multiplied by the flowed velocity. This means that the recoil becomes greater in proportion to the gas discharge rate per second and the flow velocity is higher. The recoil is therefore not produced, as is often erroneously supposed, by the outflowing spent gases pushing against the surrounding medium bu is developed purely as a reaction force due to the expulsion of matter at a high velocity from a closed system.
  • Recoil reducers are known in the art, a number of which attach a spring or a weight to the gun and some of which provide muzzle attachments or so-called "muzzle brake to the muzzle end of the barrel of a gun.
  • the recoil reducer included a tubular member having a plurality of deflecting surfaces for discharging the gases of the explosion rearwardly of the gun and also having rearwardly located surfaces constructed to allow gas to issue more or less at right angles to the axis of the gun barrel.
  • the openings between the discs arc such that the gases of the explosion, in being diverted therethrough into the atmosphere, are turned through angles which progressively decrease in one direction with the openings rearest the muzzle accounting for the greatest turning of the gases so thet these gases ace then directed backwardly from the muzzle but at a small angle of divergence with respect 10 the barrel and the rearward component of motion of the gases from the forwardmost ports or openings tond to cause a rearward gas flow towards the gun breech or shoter but such flow is deflected and broken up by the gases from the rearward ports.
  • the inner end of the ports can be made to gradually decrease in area from the outer end or vice-versa so the ports may have a vena-contracta format and suggest that the ports may be arranged so that the gas will produce an increased pressure on the muzzle to left or right instead of or in addition to the muzzle jump reducing pressure.
  • Love U.S. patent 1,259,251 discloses a firearm attachment having as a basic objective decreasing the intensity of the retort or sound in which a tubular casing having a plurality of circumfrential series of openings in its walls which extend outwardly in a direction opposite the end which is adapted for attachment to the muzzle of the gun.
  • the internal structure of the muzzle brake for providing a reaction force which is sufficient to attenuate and minimize recoil reaction as the bullet or projectile emerges from the muzzle end at its maximum muzzle velocity to where the projectile emerges from the device is of great importance as is exemplified in the struct ure disclosed in my patent application Serial No. 271,839.
  • the chambers in that muzzle brake are configured to create a reaction force which is in a direction 180o opposite the normal direction of the recoil force, with decreasing percentages of gas from first to last chamber.
  • This invention is an improvement over my previous indention in that a volumetrically small first hamber, shorter than the length of a bullet, is provided to capture and alleviate the effect of a significant percentage (in the preferred embodiment, appcoximately 80%) of the spent gas and operates in addition as a flame arrester in which the spent gases are difused and distributed through the openings or apertures which are located uniformly around the circumference of the first chamber and include an escape gas guiding structural shoulder for protecting the shooter, and a second volametricel larger chamber which is sequentially coupled to the first chamber and is somewhat longer than the first chamber with the bullet outlet, aperture or opening to the atmosphere through which the projectile or bullet emerges towards the target includes at least a spent gas turbulating muzzlehead which tapers rearwardly and creates a funnellike contour ending in a rear opening hole just a little larger in diameter than the bullet diameter.
  • the present invention provides a very short body and hence less weight and is less likely to interfere with the use of a wepon.
  • a substantially greater percentage of the spent gases and the genegy thereof are dissipated and dispersed in the first chamber, the remaining gas being substantially completely expelled via one or more openings in the second chamber and only the remaining gas which is directly behind the bullet or projectile when it emerges from the muzz ehead.
  • two basically different phenomna are used to eliminate or minimize recoil.
  • the volumetrically small first cha mber allows the gas escaping from the barrel muzzle to expand and accellerate for a distance less than the length of a bullet and impinge on the spent gas bulkhead during passage of the bullet through the bullet opening in the spent gas bulkhead.
  • Kinetic energy of the escaping gas i s quickly transferred to the spent gas bulkhead and creates a force which opposes and cancels normal recoil.
  • the device is in two parts: a main body member which is bored and tapped at one end to form the first chamber and bored and tapped at the opposite end to form the second chamber.
  • the remaining partition forms the spent gas bulkhead which is bored to form the bullet exit opening from the first chamber.
  • a shouldered notch is milled on the exterior and a series of equally spaced openings is bored from exterior to interior of the first cliamber. Then a pair of enlongated slots is cut from exterior to interior of the second chamber and then a muzzlehead is threaded into the tapped end of the second chamber to complete the device.
  • Various polishing and finish can be applied as desired.
  • the basic structure can also be formed as part of a.
  • the objective of the persent invention is to provide an improved gun barrel stabilizer while also reducing weapon recoil and reducing flame.
  • a further object of the invention is to provide a lightweight, easily manufactured and hence low cost and efficient weapon stabilizer which is relatively short in length, is safe to use, and is substantially self cleaning.
  • Fig. 1 is a cross sectional view of a nuzzle brake as disclosed in my application Ser No. 271,839,
  • Fig. 2 is a front isometric view of a weapon stabilizer incorporating the present invention
  • Fig 3 is a muzzle end or rear elevational view
  • Fig. 4 is a side elevational view
  • Fig. 5 is a to plan view
  • Fig. 6 is a bottom plan view
  • Fig. 7 is an end view.
  • Fig. 8 is a cross sectional view taken on the lines 7-7 of Fig. 1
  • Fig. 9A - 9D are schematic illustrations illustrating the bullet or projectile in different stages passing through the gun barrel stabilizer of this invention showing the bullet or projectile and expanding spent gases and their effect, assuming that the velocity of the projectile is maximum or about maximum, as it leaves the muzzle barrel end of the weapon and that the expanding spent gases are traveling at the muzzle end at supersonic velocities (there has been some debate in literature as to whether the bullet gains velocity after it has left the muzzle of the gun, which does not appear to effect this invention).
  • a muzzle brake in the embodiment of Fig. 1 hereof ineludes a cylindrical body or muzzle brake housing 30 has a reduced diameter shank 38 and outside thread 11.1 to accept a female mount type of weapon but shank 38 could be made to accept any kind of weapon.
  • Muzzle head 42 is threadablry engaged with a threaded interior bore 30B of housing member 30 and has an outer rim 44 which tapers inward with a funnellike manner 46.
  • Muzzlehead 42 tapers rearward and creates a funnel-like contour 47 ending in a rear opening hole 49 which is just a little larger in diameter than the bullet diameter.
  • Muzzle brake 02 has a rear opening 64 larger than the rear opening in muzzlehead 42.
  • a plurality of openings 32 are provided in the tubular housing member 30 with the muzzle brake 62 dividing the escaping spent gases between the two chambers and with the projectile opening in muzzle brake head 42 being substantially smaller than the opening in muzzle brake 62 and just slightly larger than the bullet so substantially all the spent gases create a reverse jet action so that all the spent gases escape through the opening 36 with any rearward force or recoil action substantially eliminated, attenuated, and minimised.
  • the weapon stabilizer 10 of this invention includes a tubular housing member 13 having a muzzle barrel attachment end 12 which will sometimes hereafter be referred to as the upstream end of the weapon stabilizer, and a bullet or projectile outlet end 13 which will hereafter sometimes be referred to as the downstream end of the weapon stabilizer 10.
  • a plurality of circumferentially spaced apertures or openings 15 communicate with interior upstream chamber 20 (see Fig.8) and a pair of slots 16 and 17 which, in this preferred embodiment, are on the top and enlongated in a direction substantially parallel to the longitudal axis of the tubular housing member 11 communicate the volumetrically larger downstream chamber to atmosphere.
  • These openings 16 and 17 could be transverse to the longitudal axis of housing member 11. They need not be enlongated slots or openings but may be simply square, round or other apertures of sufficie t total cross section area to permit the gases in the chamber to escape more or less openings than those shown.
  • a spent gas bulkhead 25 which is downstream of openings 15, forms a first or upstream gas chamber (see Fig. 8) and lulkhead 25 has an opening 26 through which the bullet or projectile passes from the muzzle end of the weapon.
  • the muzzlehead 60 which is downstream of spent gas bulkhead 25 has a bullet or projectile opening 61 which is just slightly larger than the bu llet or projectile and smaller than the bullet or projectile opening in 26 in bulkhead 25.
  • Exemplary dimensions for a .223 Cal. A.R. 15 and 16 are given in Fig. 8.
  • the gases under pressure proceed from the barrel and enter the volumetrically small first chamber 20 and come in contact with and impinge upon bulkhead 25, expanding and being forced out of ports or openings 15.
  • An outer recess 19 extending circumferentially around housing 11 and aligned with openings 15 directs the escaping and expanding gases from being directed backwa rdly toward the shooter.
  • the pressure and impingement of the accellerating and exparding gases of tacting spent gas bulkhead 25 absorbs and receives the energy of the escaping gases exiting through openings 15, the force of the expanding gases contacting or impinging on bulkhead 25 reducing the barrel recoil.
  • the first chamber 25, in conjunction with the size of the openinc 26 in bulkhead 25 eliminates approximately 80% of total gas produced by the explosion or combustion of the powder charge. It will be appreciated that more or less of the expanding gases can be eliminated through the first chamber but in the preferred embodiment a majority of the gas and energy thereof is dissipated in the volumetrically small upstream chamber.
  • the bullet or projectile After the bullet or projectile has passed through opening 26 in bulkhead 25, it enters a second or downstream chamber 27 where the remaining gases which passed through opening 26 are able to expand as they cone into contact with the second bulkhead formed as a spent gas turbulating poritoii of muzzlehead 60.
  • This muzzlehead as shown and described in greater detail in con ⁇ with Fig.8, and as described more fully in my application Serial No.
  • the expanding gas particles leaving the muzzle accellerate to where they impinge on the bulkhead substantially less than the length L2 of chamber 27.
  • the diameter D1 of chamber 20 is substantially smaller than the diameter D2 of chamber 27.
  • the bullet opening diameter D3 is essentially the same as the diameter of the muzzle end 50 of barrel 51.
  • the bullet opening 26 in spent gas bulkhead 25 is larger (approximately ten thousandths of an inch in this embodiment) than the diameter D3 of the bullet or projectile (P).
  • the length L1 of chamber 20 is short in relation to the length of chamber 27 and in relation, to the length of the projectile.
  • the projectile or bullet (P) after it emerges from the muzzle end 50 of gun barrel 51 will have a velocity VI and escaping spent gases as they expand will have at least a velocity substantially equal to or greater than the velocity of the projectile and this velocity will be attenuated in volumetrically small chamber 25 first by the expansion thereof in the chamber and more by the impingement or contacting of the spent gas bulkhead 25 by the gas.
  • Fig. 9A In Fig. 9A.
  • the bullet has just disengaged from the muzzle of the gun bar rel 51 thereby eliminating frictional forces retarding the bullet and the expanding gases G begin to accellerate from the muzzle 51 and in the absence of the weapon stabilizer of this invention, would initially accellerate past the bullet and the expansion in air disperses gases and attenuates their foreward and outward movement, in the unbounded space surrounding the muzzle creating recoil or kick and muzzle jump.
  • the volumetrically small upstream chamber 25 constrains spent gas, causing it to impinge on spent gas bulkhead 25 and to exit through openin 15.
  • Bullet P at this time interval has the nose and sustantially filling opening 26 so that only an annular band AB of gas passes therethrough as the bullet P passes the opening 26 in spent gas bulkhead 25.
  • Fig. 9C the nose of bullet outlet opening 61 in muzzlehead which, it will be recalled, is smaller than the bullet opening 26 in spent gas bulkhead 25 so that very little spent gas escapes through opening 61 at the time the bullet P has exited 60 on its way to the target as shown in Fig. 9D, so recoil has been substantially elimineted.
  • the gases and flame exiting through uniformly spaced apertures 15 are uniformly diffused and dispersed with greatly attenuated flame therby protecting the shooter and imaroving shooting characteristics.
  • the reaction force of the gas escaping from the muzzle is nullified upon impingement of the gas and burnt and unburnt powder particles on spent gas bulkhead 25.
  • the bullet opening 26 in spent gas bulkhead 25 is larger than the bullet to allow an annular space for gas (about 20%) to enter the volumetrically larger downstream chamber, be turbulated and exit through openings 16 and 17.
  • the exemplary dimensions fur a .223 Cal. A.R. 15 and 16 rifle has about a five thousandths clearance for the bullet opening

Landscapes

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

Abstract

Un stabilisateur (10) destiné à être monté sur une arme comprend un organe de logement tubulaire (11) ayant une extrémité de fixation (12) sur la bouche du canon et une extrémité de sortie (13) de la balle. Une pluralité d'ouvertures (15) espacées sur la circonférence communiquent avec une chambre intérieure en amont (20) et une paire de fentes (16 et 17), aménagées sur la partie supérieure de l'organe de logement tubulaire (11), font communiquer la chambre en aval de plus grand volume (27) avec l'atmosphère. Une cloison étanche (25) au gaz d'échappement est prévue en aval des ouvertures (15). Le déflecteur de bouche (60) se trouve en aval de la cloison étanche (25) au gaz d'échappement et possède une ouverture de sortie (61) des balles légèrement plus grande que la balle mais plus petite que l'ouverture (26) du passage des balles dans la cloison étanche (25).
EP19830902484 1983-06-28 1983-06-28 Stabilisateur d'arme et reducteur de recul Withdrawn EP0151112A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1983/000984 WO1985000215A1 (fr) 1983-06-28 1983-06-28 Stabilisateur d'arme et reducteur de recul

Publications (1)

Publication Number Publication Date
EP0151112A1 true EP0151112A1 (fr) 1985-08-14

Family

ID=22175313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830902484 Withdrawn EP0151112A1 (fr) 1983-06-28 1983-06-28 Stabilisateur d'arme et reducteur de recul

Country Status (2)

Country Link
EP (1) EP0151112A1 (fr)
WO (1) WO1985000215A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4879942A (en) * 1984-10-09 1989-11-14 Cave James B Muzzle brake with improved stabilization and blast control
US4691614A (en) * 1986-05-30 1987-09-08 Leffel Leon E Nonsymmetrical compensator for handgun
US5005463A (en) * 1987-05-11 1991-04-09 Costa Anthony A Flash suppressor for firearms
GB9106153D0 (en) * 1991-03-22 1991-05-08 Datestyle Ltd A muzzle compensator for a gun
AT403409B (de) * 1991-04-25 1998-02-25 Steyr Daimler Puch Ag Gasdruckpistole mit vorsatz
FR2693547B1 (fr) * 1992-07-08 1994-09-16 Realisations Meca Ste Meusienn Dispositif de bouche anti-recul pour armes à feu.
GB9223325D0 (en) * 1992-11-06 1992-12-23 Datestyle Ltd A vortices-activated muzzle stabiliser for a gun
US5509345A (en) * 1994-01-26 1996-04-23 Cyktich; James M. Muzzle attachment for improving firearm accuracy
CN1053734C (zh) * 1997-12-31 2000-06-21 张建中 气动关门式枪用消音器
US7059235B2 (en) * 2002-09-19 2006-06-13 Hanslick Paul J Adjustable muzzle stabilizer for repeating firearm

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899866A (en) * 1959-08-18 Blast-controlling means
US2453121A (en) * 1945-04-20 1948-11-09 Dorothea Lane Cutts Gas porting device for shotguns
US2499428A (en) * 1948-10-08 1950-03-07 Tiffany Belle Muzzle brake
US2667815A (en) * 1950-03-04 1954-02-02 Vernon L Strong Compensator for rifles
US3155003A (en) * 1962-04-18 1964-11-03 John H Ruth Firearm accessory for attachment to muzzle of barrel
US3492912A (en) * 1966-09-01 1970-02-03 Ashbrook Clifford L Recoil controlling device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8500215A1 *

Also Published As

Publication number Publication date
WO1985000215A1 (fr) 1985-01-17

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