US2494889A - Gas piston operated firearm - Google Patents

Gas piston operated firearm Download PDF

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Publication number
US2494889A
US2494889A US8173A US817348A US2494889A US 2494889 A US2494889 A US 2494889A US 8173 A US8173 A US 8173A US 817348 A US817348 A US 817348A US 2494889 A US2494889 A US 2494889A
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US
United States
Prior art keywords
barrel
breech
firearm
gas piston
rods
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
US8173A
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English (en)
Inventor
Maillard Bernard
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.)
Brevets Aero Mecaniques SA
Original Assignee
Brevets Aero Mecaniques SA
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 Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
Application granted granted Critical
Publication of US2494889A publication Critical patent/US2494889A/en
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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
    • F41A5/22—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons

Definitions

  • the present invention relates to breech recoil operated firearms (this expression including both semi-automatic rearms, for which the gunner is to operate the trigger to iire every shot, and automatic rearms, firing by bursts, and of course firearms capable of working either semiautomatically or automatically) in which the energy necessary for actuating the breech is supplied by powder gases taken from the barrel of the arm and acting on reciprocating means for driving the breech rearwardly.
  • the invention is more particularly applicable to small caliber firearms such as aircraft or anti-aircraft automatic guns, automatic or semi-automatic rifles, etc.
  • the object of this invention is to provide a firearm of this kind which is better adapted to meet the requirements of practice than those existing up to this time.
  • the movable breech system is actuated by means of at least one rodslidably guided in a bore provided in the mass of the firearm barrel, this rod having its rear end in ⁇ contact witha part of said breech system and its front end tted with a piston slidable in a cylinder and subjected to the action of the powder gases.
  • Fig. 1 is a horizontal axial section of a portion of an automatic firearm according to the present invention
  • Fig. 2 is a vertical axial section showing certain elements of the breech operating mechanism which are not visible on Fig. 1;
  • Fig. 3 is a transverse section on the line III- III of Fig. 2.
  • this firearm includes, in the usual manner, at least one barrel l provided at the rear with a breech casing or receiver 2 assembled therewith for instance through a bayonet joint and in which can slide, parallel to the barrel axis, a movable breech system 3 operated as it will be hereinafter described.
  • the mechanism for operating breech system 3 includes at least one and preferably two reciproeating rods 4, preferably disposed symmetrically on either side of the axis of barrel i, each guided in a bore la provided in the mass of said barrel and subjected to the action of a return spring 5, the rear end of said rod acting directly on the Aero-Mecaniques S. A., a society of Switzerland 3, 1948, Serial No. 8,173
  • rods 4 act directly upon the' 3, without interposition: of push-pieces, the functional plays are reduced by said rods 4.
  • rods 4 it will be of interest slightly to incline rods 4 in the transverse direction so that they converge toward the rear and can thus act directly upon the movable breech system. Guiding of rods 4 then takes place along the rear portions of these rods.
  • each of them may be tted with shock absorbing means constituted, for instance, by a plurality of superposed elastic washers H interposed between the rear face o-f piston B and the front end of a sliding sleeve l2 bearing, through its other end, against return spring 5.
  • f3.rAA breech recoil operated-mecum which comprises;v inycombination; abarrelpv a breechr casing atufthefi'reareend.. oirK fsaid fbarrel; af reciprocating 'breeclmsystemguidedfin said breech casing, said ba-nrelheing ⁇ provided .with twolongitudinal-'boresA extending in the horizontal plane passingthrough the-axisfofesa-breech systenn symmetrically on eithlenside of theaxis4 ofwsaidV barrel," a Yrod.-having at'fleastffitsf manfportionl;l guided-in each ⁇ ofA said bores-.1 and itssrear end ⁇ Yin contact-with the-front? communication with the'iinside.
  • a firearm according to claim 2 in whic said 5xbarrel-"isiprovided with a single outlet po t in ,communicatlonmithjhe front parts of bo of ⁇ saidgcyliderslfori'feeding powder gases thereto.
  • -fGalbreech'rrecoilppperated rearm which comprises, in combination, a barrel, a breech casing 'gat'therearieridibfwsaid barrel, a reciprocating --b're'elrisy'stem guided in said breech casing, said 'f fbarrelabeing provided with two longitudinal bores extending symmetricallyr on either side of the axisathereoga rod.having Aatleast.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Toys (AREA)
US8173A 1947-03-08 1948-02-13 Gas piston operated firearm Expired - Lifetime US2494889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU281166X 1947-03-08

Publications (1)

Publication Number Publication Date
US2494889A true US2494889A (en) 1950-01-17

Family

ID=19732473

Family Applications (1)

Application Number Title Priority Date Filing Date
US8173A Expired - Lifetime US2494889A (en) 1947-03-08 1948-02-13 Gas piston operated firearm

Country Status (7)

Country Link
US (1) US2494889A (nl)
BE (1) BE480352A (nl)
CH (1) CH281166A (nl)
DE (1) DE867368C (nl)
FR (1) FR961368A (nl)
GB (1) GB634767A (nl)
LU (1) LU28362A1 (nl)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720820A (en) * 1950-06-02 1955-10-18 Paul H Dixon Hydraulic breech operating mechanism
US2775920A (en) * 1950-05-01 1957-01-01 Paul H Dixon Bolt spline
US2783685A (en) * 1951-03-02 1957-03-05 Samuel G Green Regulating plug for gas operated firearm
US2811902A (en) * 1952-01-18 1957-11-05 Paul H Dixon Mechanical bolt unlocking mechanism for recoiling barrel guns
US3611872A (en) * 1969-06-02 1971-10-12 Dale M Davis Lightweight compact rifle
FR2370946A1 (fr) * 1976-11-16 1978-06-09 Kawaguchiya Firearms Dispositif entraine par gaz pour fusil mitrailleur automatique
US4102242A (en) * 1975-08-04 1978-07-25 O. F. Mossberg & Sons, Inc. Autoloading gas-operated firearm
US4418608A (en) * 1980-03-22 1983-12-06 Rheinmetall Gmbh Arrangement for pre-selecting the cadence of firing bursts of a pressurized gas loader of a gun
US5959234A (en) * 1997-01-31 1999-09-28 Benelli Armi S.P.A. Gas-operated automatic firearm, particularly a shotgun
US20130036900A1 (en) * 2011-08-08 2013-02-14 Stephen Mark Mueller Recoil Apparatus for Firearm
US8640598B1 (en) * 2010-07-19 2014-02-04 Jason Stewart Jackson Sleeve piston for actuating a firearm bolt carrier
US9261314B1 (en) 2010-07-19 2016-02-16 Jason Stewart Jackson Sleeve piston for actuating a firearm bolt carrier
US10578381B2 (en) * 2018-01-22 2020-03-03 American Tactical, Inc. Upper receiver for modular shotgun
US11125516B2 (en) * 2018-01-22 2021-09-21 American Tactical, Inc. Upper receiver for modular shotgun
US20220333884A1 (en) * 2021-04-17 2022-10-20 Jordan Kristomas Kennedy System for a delayed-opposed-piston gas action assembly

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU32298A1 (nl) * 1953-07-27
US4269109A (en) * 1979-03-27 1981-05-26 Ares, Inc. Open-framework receiver automatic cannon
DE3046343C2 (de) * 1980-12-09 1983-01-20 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf Verschluß für automatische Feuerwaffen
DE19805752A1 (de) * 1998-02-13 1999-08-19 Schmid Schußwaffe, insbesondere Gewehr

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US960825A (en) * 1908-07-30 1910-06-07 Giuseppe Colleoni Automatic gun.
US1066487A (en) * 1910-05-14 1913-07-08 Annibale Giletta Firearm.
US1387460A (en) * 1918-12-11 1921-08-16 William J Wilkinson Block-action for repeating arms
US2031305A (en) * 1932-09-03 1936-02-18 Sig Schweiz Industrieges Automatic firearm
US2196852A (en) * 1937-04-13 1940-04-09 Western Cartridge Co Repeating firearm
US2199871A (en) * 1938-02-11 1940-05-07 Birkigt Marc Automatic firearm
US2341780A (en) * 1940-08-26 1944-02-15 Timothy F Horan Automatic firearm
US2345736A (en) * 1942-04-17 1944-04-04 Eiane Halvor Olsen Automatic gun mechanism

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US960825A (en) * 1908-07-30 1910-06-07 Giuseppe Colleoni Automatic gun.
US1066487A (en) * 1910-05-14 1913-07-08 Annibale Giletta Firearm.
US1387460A (en) * 1918-12-11 1921-08-16 William J Wilkinson Block-action for repeating arms
US2031305A (en) * 1932-09-03 1936-02-18 Sig Schweiz Industrieges Automatic firearm
US2196852A (en) * 1937-04-13 1940-04-09 Western Cartridge Co Repeating firearm
US2199871A (en) * 1938-02-11 1940-05-07 Birkigt Marc Automatic firearm
US2341780A (en) * 1940-08-26 1944-02-15 Timothy F Horan Automatic firearm
US2345736A (en) * 1942-04-17 1944-04-04 Eiane Halvor Olsen Automatic gun mechanism

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2775920A (en) * 1950-05-01 1957-01-01 Paul H Dixon Bolt spline
US2720820A (en) * 1950-06-02 1955-10-18 Paul H Dixon Hydraulic breech operating mechanism
US2783685A (en) * 1951-03-02 1957-03-05 Samuel G Green Regulating plug for gas operated firearm
US2811902A (en) * 1952-01-18 1957-11-05 Paul H Dixon Mechanical bolt unlocking mechanism for recoiling barrel guns
US3611872A (en) * 1969-06-02 1971-10-12 Dale M Davis Lightweight compact rifle
US4102242A (en) * 1975-08-04 1978-07-25 O. F. Mossberg & Sons, Inc. Autoloading gas-operated firearm
FR2370946A1 (fr) * 1976-11-16 1978-06-09 Kawaguchiya Firearms Dispositif entraine par gaz pour fusil mitrailleur automatique
US4418608A (en) * 1980-03-22 1983-12-06 Rheinmetall Gmbh Arrangement for pre-selecting the cadence of firing bursts of a pressurized gas loader of a gun
US5959234A (en) * 1997-01-31 1999-09-28 Benelli Armi S.P.A. Gas-operated automatic firearm, particularly a shotgun
US8640598B1 (en) * 2010-07-19 2014-02-04 Jason Stewart Jackson Sleeve piston for actuating a firearm bolt carrier
US9261314B1 (en) 2010-07-19 2016-02-16 Jason Stewart Jackson Sleeve piston for actuating a firearm bolt carrier
US20130036900A1 (en) * 2011-08-08 2013-02-14 Stephen Mark Mueller Recoil Apparatus for Firearm
US8844425B2 (en) * 2011-08-08 2014-09-30 Elite Tactical Advantage Recoil apparatus for firearm
US10578381B2 (en) * 2018-01-22 2020-03-03 American Tactical, Inc. Upper receiver for modular shotgun
US11125516B2 (en) * 2018-01-22 2021-09-21 American Tactical, Inc. Upper receiver for modular shotgun
US20220333884A1 (en) * 2021-04-17 2022-10-20 Jordan Kristomas Kennedy System for a delayed-opposed-piston gas action assembly
US11519681B2 (en) * 2021-04-17 2022-12-06 Jordan Kristomas Kennedy System for a delayed-opposed-piston gas action assembly

Also Published As

Publication number Publication date
BE480352A (nl)
DE867368C (de) 1953-02-16
GB634767A (en) 1950-03-29
FR961368A (nl) 1950-05-11
CH281166A (fr) 1952-02-29
LU28362A1 (nl)

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