US3021633A - Combination muzzle brake and grenade launcher for portable firearms - Google Patents

Combination muzzle brake and grenade launcher for portable firearms Download PDF

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Publication number
US3021633A
US3021633A US40495A US4049560A US3021633A US 3021633 A US3021633 A US 3021633A US 40495 A US40495 A US 40495A US 4049560 A US4049560 A US 4049560A US 3021633 A US3021633 A US 3021633A
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United States
Prior art keywords
barrel
cylinder
weapon
bomb
upright
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
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US40495A
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English (en)
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Beretta Pier Carlo
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Individual
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Individual
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C27/00—Accessories; Details or attachments not otherwise provided for
    • F41C27/06—Adaptations of smallarms for firing grenades, e.g. rifle grenades, or for firing riot-control ammunition; Barrel attachments therefor
    • 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
    • F41A21/38—Muzzle attachments or glands for recoil reduction ; Stabilisators; Compensators, e.g. for muzzle climb prevention adjustable, i.e. the vent holes or the vent area being adjustable

Definitions

  • the gas intake consists of a hole provided inlthebarrel in the proximity off the muzzle; that said hole is in communication with the interior of ther-gas in# take cylinder iixed below the barrel by means of suitable ferrules; and that thef'temporaryinterception ofV the passage of gas between barrel and'cylinder isf effectedywhe'n one wishes toactuate the original bomb-throwing device of the weapongby meansof a valve applied to the front end Yof saidscylinderfand held open bythe bomb-throwing device, Vwhile thisprevents automatic operation of the weapon, it causesthe dispersionzint'o the ⁇ atmosphere of a considerable amount of gases generated by theY charge which, therefore', are not totally Yexploited for the purposes of the bomb-throwing because the eiiecty of the valve then is to establish a momentary communication between v the interior of the chamber ⁇ and the atmosphere preventing thereby the
  • FIG. 2 represents apartial'rs'ectionlalongithe line.1-2"''2 of FIG. l;
  • FIG.l 3 represents the' 'deviceof' FIG; 1 but'pre'paredfor operation of the weapon-asav hombthrower;
  • FIG; 4i represents a partial section taken alongf the line 4 4 of'FIG. 3;'
  • ,51 represents a cross-section'oi the device taken along thefline S-Sof-FIG; 3;
  • FIGS..Y 61 and17V ' show the slidablesferruleli in side and front views respectively;- and ⁇ FIGS'. 8and9 show the iixe'dferrule 'Tini-side andfront t views, respectively.
  • With-referencejnumeral- 'I is 'indicated the barrel of the weaponwhich has the'radial holeorl gas intake 2 in communication through portf'with-the interior ofv the cylinder' 3 which 'encloses the devices used in the automaticl operation ofthe' ritie.
  • the cylinder 3 is closed by a plug 4 and'is mountedonthe barrel 1 bymeansof a ferruleVv 5 isusceptible of longitudinal sliding,V
  • the trumpet tube 6 On the muzzle end of the barrel there is kscrewed the trumpet tube 6 which constitutes an extension of said barrel and is destined to support the bomb which is to be thrown.
  • the Ytrumpet tube 6y in fact has an axial bore with a gauge not less than that of the barrelrand has, in. its. bore one or more chambers where its bore diameter is sensibly widened; andv has conveniently arrangedslits in. thewall of' the trumpet tube which put these chambers incommunic'ation with' the' atmosphere.
  • FIG. 3 is illustrated the device prepared for operation as a bomb-thrower. Consequently, the operation of the weapon -as an automatic rifle is temporarily prevented.
  • the sight upright 14 is brought by band to vertical position and by elect of said movement and of the devices hereinafter described, the cylinder 3 is compelled to slide backwards just as much as needed in order that the hole 2 for gas intake is no longer aligned with port 3 and the interior of said cylinder. In that way the entire volume of the gas generated by the explosion of the cartridge is available at the mouth of the barrel for the action of throwing the ⁇ bomb which is to be Itted into the extension 6.
  • the assembly and operation of the device are as follows. On the perforated cylindrical extension 6 (the external diameter of which and the length of which will be dimensioned in relationship with the weapon and with the type of bomb one intends to adopt) is fitted the ferrule 7 provided with a forked extension 7 in whose furcations there are provided the holes 8 that hold the pin 9. The ferrule 7 is then secured to the body 6.
  • a second ferrule which is shaped at its top as a fork with furcations ⁇ 12 and which by means of a ring '13 below and rigid therewith, can embrace the head 4 of the plug of the gas intake cylinder 3.
  • the pin 9 which iinds housing in the holes 8 of the xed ferrule 7, there are mounted, in symmetrical position with respect to the vertical axial plane of the weapon, the cam and the sight upright 14 connected to the pin 9 by means of suitable adjustments, so as to be rigid therewith.
  • the pin 9 terminates at one side in a xed button and at its other side in la counter-nut secured to the pin 9 by means of a removable member (split or cotter pin or the like).
  • the assembly so mounted is then screwed onto the muzzle of the gun, as an extension thereof.
  • the gas intake hole 2 in the barrel is in register with the bore of the cylinder 3 through the corresponding port 3'.
  • part of the gases passes therefore from the barrel to the interior of the cylinder and actuates the device provided for the automatic operation of the rile. If the sight upright 14 is turned manually 90 to the vertical position of FIG. 3, the weapon is automatically prepared for operation as a bomb-thrower.
  • the extension of the barrel 6 or the trumpet tube which is bored and perforated, as stated, in order to permit passage of the bullet and of the gases has one or more chambers 17 in the walls of which there are provided through slits 18 which permit the partial discharge of the gases to the atmosphere.
  • slits are, however, occludable by means of a pipe 19 mounted concentrically with the extension 5, slidable thereon and having perforations 19 therein alignable with the slits 18 in the chambers 17.
  • Said pipe 19 has two fins 20 which extend as far as the slidable ferrule 5 already mentioned, to which they are fastened by means of pins 2d and 21 which pass through holes 5 in ferrule 5.
  • FIG. 1 represents the weapon prepared for operation as a rifle
  • the sight upright is down, that the gas intake opening between the barrel 1 and the cylinder 3 is free and that the slits 18 are uncovered or aligned with perforations 19. Consequently the shooting of a cartridge causes the normal operation of the rearming mechanism of the weapon and the propulsion of the bullet.
  • the gases that expand in chamber 17 partly escaped to the outside through the slits 18 which are open, thereby exerting an effective action of muzzle brake for the rifle.
  • FIG. 3 which represents the weapon as prepared for operation as a bomb-thrower
  • the upright of Vthe sight has been erected to vertical position; that by effect of that movement and of the connections existing the gas intake aperture between the barrel 1 and the cylinder 3 has become closed; and that the slits 1S have been covered by the tube 19.
  • a combined grenade-launching and muzzlebraking device for said firearm comprising a tubular member secured to said barrel coaxially thereof to project forwardly beyond the muzzle end of said barrel, said tubular member having a plurality of ports extending through its wall, and a member mounted on said tubular member to slide axially thereof and having a plurality of ports therethrough, which are adapted to be moved by sliding movement of said last-named member in opposite directions into and out of registry with the ports of said tubular member to render said muzzle brake operative and inoperative, respectively, and closure means secured to the last-named member and operative upon movement of said last-named member in opposite directions, respectively, to open and close the first-named port in said barrel, respectively.
  • said closure means includes a cylinder mounted on said barrel with its axis parallel to the axis of said barrel for movement in the direction of the axis of said barrel ⁇ and having an opening therein which upon movement of said lastnamed member in opposite directions is moved into and out of alignment with said first-named port, said cylinder operating, when said opening is out of alignment with said first-named port, to close off the latter to prevent the escape of gases therethrough.
  • a cam is rotatably mounted on said tubular member and is operatively connected both to said 1astnamed member and to said closure means, and manually-operable means is provided for rocking said cam in opposite directions to eiect simultaneous movement of said last-named memdirection to cause said ports in said last-named member to ber and said closure means in one direction or the other be positioned out of registry with the ports in said tubudepending upon the direction of movement of said cam. lar member and to close said first-named port.
  • said manually operable means comprises a grenade launching 5 References Cited in the le of this patent sighting lever secured at one end to said cam and pivotal UNITED STATES PATENTS between a vertical position in which it extends normal t0 said tubular member, and a horizontal position parallel 2,770,904 WeiSS NOV- 20, 1955 to said tubular member, said lever being operative upon 2,788,599 Brandt Apr- 16, 1957 movement to its vertical positon to rotate said cam in a 10 2,883,781 Harvey Apr. 28, 1959

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
US40495A 1960-04-02 1960-06-30 Combination muzzle brake and grenade launcher for portable firearms Expired - Lifetime US3021633A (en)

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Application Number Priority Date Filing Date Title
IT3021633X 1960-04-02

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US3021633A true US3021633A (en) 1962-02-20

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ID=11436573

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Application Number Title Priority Date Filing Date
US40495A Expired - Lifetime US3021633A (en) 1960-04-02 1960-06-30 Combination muzzle brake and grenade launcher for portable firearms

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US (1) US3021633A (enrdf_load_stackoverflow)
DE (1) DE1161789B (enrdf_load_stackoverflow)
NL (2) NL103444C (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114289A (en) * 1962-07-12 1963-12-17 William E Aulabaugh Muzzle brake
US4024791A (en) * 1975-10-28 1977-05-24 The United States Of America As Represented By The Secretary Of The Army Gun muzzle flash suppressor
US4879942A (en) * 1984-10-09 1989-11-14 Cave James B Muzzle brake with improved stabilization and blast control
US5020416A (en) * 1988-03-02 1991-06-04 Pantera Armory, Inc. Muzzle brake for firearms
US5243895A (en) * 1991-09-06 1993-09-14 Dickman John P Shot gun barrel leveling device
US5425298A (en) * 1994-02-23 1995-06-20 Challenger International Ltd. Adjustable muzzle brake for a firearm
US5509345A (en) * 1994-01-26 1996-04-23 Cyktich; James M. Muzzle attachment for improving firearm accuracy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770904A (en) * 1950-10-24 1956-11-20 Brevets Aero Mecaniques Grenade launching device for a firearm having a muzzle brake
US2788599A (en) * 1951-10-30 1957-04-16 Energa Sighting device
US2883781A (en) * 1957-10-23 1959-04-28 Earle M Harvey Combination stabilizer, recoil break, flash hider, and grenade launcher for a firearm

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455361A (en) * 1947-05-12 1948-12-07 John C Garand Grenade launcher
NL77846C (enrdf_load_stackoverflow) * 1951-04-06
US2807112A (en) * 1954-03-24 1957-09-24 John C Garand Grenade launcher for a gun with a gas cylinder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2770904A (en) * 1950-10-24 1956-11-20 Brevets Aero Mecaniques Grenade launching device for a firearm having a muzzle brake
US2788599A (en) * 1951-10-30 1957-04-16 Energa Sighting device
US2883781A (en) * 1957-10-23 1959-04-28 Earle M Harvey Combination stabilizer, recoil break, flash hider, and grenade launcher for a firearm

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114289A (en) * 1962-07-12 1963-12-17 William E Aulabaugh Muzzle brake
US4024791A (en) * 1975-10-28 1977-05-24 The United States Of America As Represented By The Secretary Of The Army Gun muzzle flash suppressor
US4879942A (en) * 1984-10-09 1989-11-14 Cave James B Muzzle brake with improved stabilization and blast control
US5020416A (en) * 1988-03-02 1991-06-04 Pantera Armory, Inc. Muzzle brake for firearms
US5243895A (en) * 1991-09-06 1993-09-14 Dickman John P Shot gun barrel leveling device
US5509345A (en) * 1994-01-26 1996-04-23 Cyktich; James M. Muzzle attachment for improving firearm accuracy
US5425298A (en) * 1994-02-23 1995-06-20 Challenger International Ltd. Adjustable muzzle brake for a firearm

Also Published As

Publication number Publication date
DE1161789B (de) 1964-01-23
NL253251A (enrdf_load_stackoverflow)
NL103444C (enrdf_load_stackoverflow)

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