US2918848A - Regulating means for a gas piston operated gun - Google Patents

Regulating means for a gas piston operated gun Download PDF

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Publication number
US2918848A
US2918848A US596674A US59667456A US2918848A US 2918848 A US2918848 A US 2918848A US 596674 A US596674 A US 596674A US 59667456 A US59667456 A US 59667456A US 2918848 A US2918848 A US 2918848A
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United States
Prior art keywords
gun
chamber
passage
cross
section
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Expired - Lifetime
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US596674A
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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
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Brevets Aero Mecaniques SA
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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
    • F41A5/26—Arrangements or systems for bleeding the gas from the barrel
    • F41A5/28—Adjustable systems

Definitions

  • the object of my invention is to obviate this drawback.
  • I provide, between the gas tap and the device to be operated by the powder gases under pressure, heat responsive valve means arranged to control the passage through which said gases can flow so as to vary the cross section of said passage in response to variations in the temperature of operation of at least one part of the gun.
  • Fig. 1 is a vertical sectional view of "aportion of an automatic gun made according to my invention.
  • Fig. 2 is a similar view on an enlarged scale of part of the structure of Fig. 1. I I I
  • Fig. 3 is a view similar to Fig.2 showing a modification.
  • Fig. 4 is an explanatory diagram to' be referred to hereinafter.
  • the automatic gun shown on the drawing includes a barrel 2 provided with a gas tap 1 through which the powder gases are fed to a cylindrical cavity formed in a support 9 and one end of which constitutes a cylindrical chamber 3 in which is slidable a piston 4 which constitutes a power element for controlling for instance the release of the gun breech block (not shown on the drawing).
  • a gas tap 1 through which the powder gases are fed to a cylindrical cavity formed in a support 9 and one end of which constitutes a cylindrical chamber 3 in which is slidable a piston 4 which constitutes a power element for controlling for instance the release of the gun breech block (not shown on the drawing).
  • acore 5 housed in a cylindrical portion of said cavity adjoining chamber 3, said core being mounted with a suitable annular clearance i ev . Z, hetweeni its periphery and. the: wall of said cylindricali cavity portion, asvisible at 6'.
  • Said-core is carried by a plug 8 screwed in the support I 9 in which the cavity is formed, conduit 7 being alscr formed: in said support 9;
  • the left hand portion of plug. 8 may be provided with a blind hole 10 intended to facilitate cooling thereof.
  • core 5 may be considered. as a kind of throttlevalve member expansible in response toits being heated so as to modify the cross section. of passage 6.
  • Thisresult is due to the fact that, plug, 8 and; support; 9 being for instance both: made of steel, when a relatively long burst (for instance shots) is fired, core 5 expands more rapidly than the cylindrical. wall ofi the bore in which it is housed in support 9 so that the. cross section of annular passage 6 decreases, which tends to reduce the rate of. fire;
  • passage 7 opens directly into a cylindrical bore 12 provided in support 9, the end 13 of this bore being of frusto-conical shape and communicating witha passage 14 leading to chamber 3, the whole of bore 12, passage 14 and chamber 3 forming the above mentioned cavity.
  • a hollow plug 15 having a nut-shaped head 16 is screwed in cylindrical bore 12 and the end 17 of said plug is conical, shaped so that when plug 15 has been screwed in position, this point 17 is located opposite the frusto-conical end 13 of bore 12 and leaves, between 13 and 17, an annular passage 18 of suitable cross section.
  • rod 17 When a long burst is fired, rod 17 is heated and expands quicker than member 9 so that the cross section of annular passage 18 decreases.
  • the lefthand portion of the rod 17 may be provided with a blind hole ,20 in communication with the atmosphere.
  • passages 19 of suitable constant cross section may be provided either in the end of rod 17 or in the portion 13 of the support, so as to ensure the desired variation of the rate of fire.
  • An automatic gun comprising, in combination, a barrel provided with a gas tap,'means carried by said barrel forming a chamber communicating with saidsgas tap wherebygases flow from said gas tap into said chamber every time a shot is fired, a pistonvmovable in said chamber in response to pressure rises therein, and valve means interposed between said gas tap and said chamber for varying the flow of gases from said gas tap to said chamber, said valve means comprising awplug mounted in said chamber and having a free end of lessened diameter extending toward said piston beyond said gas tap so as to always leave an annulartpassage between the free end of said plug and the walls of said chamber for the passage of gases from said gas tap to said chamber, said free end being expansible under the efiect of heating by the gases flowing from said gas tap to said chamber during a burst of firing of the gun, whereby the cross-section of said annular passage is reduced as the burst becomes longer and longer, said plug being further provided with at least one other passage between said gas tap and said chamber and formed in
  • An automatic gun which comprises in combination a barrel provided with a gas tap, means carried by said barrel forming a cavity in communication with said gas tap whereby powder gases flow from said barrel to said cavity every time a shot is fired, one end of said means means at the end of said cavity opposed to that formed by said chamber, said rod extending toward said'partition beyond said gas tap to always leave an annular passage between the free end of said rodand the wall of said partition, said. free end being expansible under the efl ect of heating by the gases flowing from said cavity to said chamber during a burst of firing of the gun, whereby the crosssection of said annular passage is reduced as the burst becomes longer and longer.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Nozzles (AREA)
US596674A 1955-07-26 1956-07-09 Regulating means for a gas piston operated gun Expired - Lifetime US2918848A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU333558X 1955-07-26

Publications (1)

Publication Number Publication Date
US2918848A true US2918848A (en) 1959-12-29

Family

ID=19732596

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Application Number Title Priority Date Filing Date
US596674A Expired - Lifetime US2918848A (en) 1955-07-26 1956-07-09 Regulating means for a gas piston operated gun

Country Status (8)

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US (1) US2918848A (enrdf_load_html_response)
BE (1) BE549216A (enrdf_load_html_response)
CH (1) CH333558A (enrdf_load_html_response)
DE (1) DE1053977B (enrdf_load_html_response)
FR (1) FR1155066A (enrdf_load_html_response)
GB (1) GB793289A (enrdf_load_html_response)
LU (1) LU33752A1 (enrdf_load_html_response)
NL (1) NL110964C (enrdf_load_html_response)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680434A (en) * 1969-07-11 1972-08-01 Werkzeug Mas Fab Derlikon Buhr Firing rate regulator for a gas-operated firearm
US5479736A (en) * 1994-01-06 1996-01-02 Cerberus Institute For Research And Development, Inc. Augmented service pistol and ammunition weapons system
WO2007079879A1 (de) * 2005-12-23 2007-07-19 Heckler & Koch Gmbh Gasabnahmeanordnung und lauf bzw. waffe mit einer gasabnahmeanordnung
US20100282065A1 (en) * 2007-08-29 2010-11-11 Ra Brands, L.L.C. Gas system for firearms
US8061260B2 (en) 2009-06-22 2011-11-22 Ra Brands, L.L.C. Gas plug retention and removal device
US8176837B1 (en) 2009-10-11 2012-05-15 Jason Stewart Jackson Firearm operating rod
USD661364S1 (en) 2010-06-21 2012-06-05 Ra Brands, L.L.C. Gas block
US8250964B2 (en) 2007-08-29 2012-08-28 Ra Brands, L.L.C. Gas system for firearms
WO2012097327A3 (en) * 2011-01-14 2013-05-23 ArmWest, LLC Firearm
US8528458B2 (en) 2011-07-27 2013-09-10 Bernard T. Windauer Pressure-regulating gas block
US8640598B1 (en) 2010-07-19 2014-02-04 Jason Stewart Jackson Sleeve piston for actuating a firearm bolt carrier
US20140060312A1 (en) * 2012-02-14 2014-03-06 Michael Alan Ruck Gas piston control system for a firearm
US20150176933A1 (en) * 2013-12-23 2015-06-25 Jason Mark Adams Adjustable Volume Piston System
US9243859B1 (en) * 2014-01-16 2016-01-26 FN America, LLC Gas block valve stem for modifying the firing rate of a machine gun
US9261314B1 (en) 2010-07-19 2016-02-16 Jason Stewart Jackson Sleeve piston for actuating a firearm bolt carrier
US9347719B1 (en) 2014-01-13 2016-05-24 Ra Brands, L.L.C. Replaceable feed ramp
EP1797389B1 (en) * 2004-09-17 2016-10-26 Colt Defense, LLC Firearm having an indirect gas operating system
US9488423B2 (en) 2011-01-14 2016-11-08 Arm West, Llc Firearm systems and methods
US9719739B2 (en) 2014-02-06 2017-08-01 Bernard (Bernie) T. Windauer Gas block balancing piston for auto-loading firearm
US10466000B2 (en) * 2017-08-07 2019-11-05 Todd Conrad Gardner Gas flow volume control apparatus for firearms
US10488136B2 (en) 2016-09-23 2019-11-26 ArmWest, LLC Selective fire firearm systems and methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3561177D1 (en) * 1984-07-03 1988-01-21 Oerlikon Buehrle Ag Shot-velocity regulator for gas-operated firearms
DE202011103723U1 (de) 2011-07-27 2011-11-07 D.A.R. Gmbh Gasentnahmevorrichtung für Selbstladebüchsen
DE102016015069A1 (de) 2016-12-19 2018-06-21 Rheinmetall Air Defence Ag Gasdrucklader und Verfahren zur Kadenzsteuerung eines Gasdruckladers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US795627A (en) * 1904-09-23 1905-07-25 Henry W Larsson Thermostatic valve.
US804986A (en) * 1902-07-21 1905-11-21 Hans Stamm Self-loading firearm.
US960825A (en) * 1908-07-30 1910-06-07 Giuseppe Colleoni Automatic gun.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH250933A (de) * 1940-07-26 1947-09-30 Zbrojovka Brno As Gasdrucklader mit rücklaufendem Lauf.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US804986A (en) * 1902-07-21 1905-11-21 Hans Stamm Self-loading firearm.
US795627A (en) * 1904-09-23 1905-07-25 Henry W Larsson Thermostatic valve.
US960825A (en) * 1908-07-30 1910-06-07 Giuseppe Colleoni Automatic gun.

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680434A (en) * 1969-07-11 1972-08-01 Werkzeug Mas Fab Derlikon Buhr Firing rate regulator for a gas-operated firearm
US5479736A (en) * 1994-01-06 1996-01-02 Cerberus Institute For Research And Development, Inc. Augmented service pistol and ammunition weapons system
EP1797389B1 (en) * 2004-09-17 2016-10-26 Colt Defense, LLC Firearm having an indirect gas operating system
AU2006334788B2 (en) * 2005-12-23 2011-02-24 Heckler & Koch Gmbh Gas bleed arrangement and barrel and firearm with a gas bleed arrangement
US7621210B2 (en) 2005-12-23 2009-11-24 Heckler & Koch, Gmbh Gas bleed assemblies for use with firearms
US20080307954A1 (en) * 2005-12-23 2008-12-18 Norbert Fluhr Gas bleed assemblies for use with firearms
WO2007079879A1 (de) * 2005-12-23 2007-07-19 Heckler & Koch Gmbh Gasabnahmeanordnung und lauf bzw. waffe mit einer gasabnahmeanordnung
US20100282065A1 (en) * 2007-08-29 2010-11-11 Ra Brands, L.L.C. Gas system for firearms
US7946214B2 (en) * 2007-08-29 2011-05-24 Ra Brands, L.L.C. Gas system for firearms
US8250964B2 (en) 2007-08-29 2012-08-28 Ra Brands, L.L.C. Gas system for firearms
US8061260B2 (en) 2009-06-22 2011-11-22 Ra Brands, L.L.C. Gas plug retention and removal device
US8176837B1 (en) 2009-10-11 2012-05-15 Jason Stewart Jackson Firearm operating rod
USD661364S1 (en) 2010-06-21 2012-06-05 Ra Brands, L.L.C. Gas block
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
US10415906B2 (en) 2011-01-14 2019-09-17 ArmWest, LLC Firearm systems and methods
US9038525B2 (en) 2011-01-14 2015-05-26 ArmWest, LLC Firearm
US9488423B2 (en) 2011-01-14 2016-11-08 Arm West, Llc Firearm systems and methods
WO2012097327A3 (en) * 2011-01-14 2013-05-23 ArmWest, LLC Firearm
US11137222B2 (en) 2011-01-14 2021-10-05 ArmWest, LLC Firearm systems and methods
US8528458B2 (en) 2011-07-27 2013-09-10 Bernard T. Windauer Pressure-regulating gas block
US20140060312A1 (en) * 2012-02-14 2014-03-06 Michael Alan Ruck Gas piston control system for a firearm
US8869674B2 (en) * 2012-02-14 2014-10-28 Michael Alan Ruck Gas piston control system for a firearm
US20150176933A1 (en) * 2013-12-23 2015-06-25 Jason Mark Adams Adjustable Volume Piston System
US9347719B1 (en) 2014-01-13 2016-05-24 Ra Brands, L.L.C. Replaceable feed ramp
US9562730B2 (en) 2014-01-13 2017-02-07 Ra Brands, L.L.C. Replaceable feed ramp
US9243859B1 (en) * 2014-01-16 2016-01-26 FN America, LLC Gas block valve stem for modifying the firing rate of a machine gun
US9719739B2 (en) 2014-02-06 2017-08-01 Bernard (Bernie) T. Windauer Gas block balancing piston for auto-loading firearm
US10488136B2 (en) 2016-09-23 2019-11-26 ArmWest, LLC Selective fire firearm systems and methods
US11650023B2 (en) 2016-09-23 2023-05-16 Arm West, Llc Selective fire firearm systems and methods
US10466000B2 (en) * 2017-08-07 2019-11-05 Todd Conrad Gardner Gas flow volume control apparatus for firearms

Also Published As

Publication number Publication date
CH333558A (fr) 1958-10-31
LU33752A1 (enrdf_load_html_response)
BE549216A (enrdf_load_html_response)
FR1155066A (fr) 1958-04-22
DE1053977B (de) 1959-03-26
NL110964C (enrdf_load_html_response)
GB793289A (en) 1958-04-16

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