US3665804A - Semi-automatic rapid firing pistol with gas escape openings in the barrel wall - Google Patents

Semi-automatic rapid firing pistol with gas escape openings in the barrel wall Download PDF

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Publication number
US3665804A
US3665804A US869060A US3665804DA US3665804A US 3665804 A US3665804 A US 3665804A US 869060 A US869060 A US 869060A US 3665804D A US3665804D A US 3665804DA US 3665804 A US3665804 A US 3665804A
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United States
Prior art keywords
barrel
pistol
gas
ports
escape
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Expired - Lifetime
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US869060A
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English (en)
Inventor
Edwin Rohr
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.)
Haemmerli Jagd und Sportwaffenfabrik und Apparatebau GmbH
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Haemmerli AG
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    • 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
    • F41A21/28—Gas-expansion chambers; Barrels provided with gas-relieving ports

Definitions

  • Kleeman s71 ABSTRACT A semi-automatic pistol having gas escape ports in the sides of the barrel wall immediately forward of the cartridge chamber, which ports permit gas to escape from the firing chamber. From these ports, the gas is conducted along a pair of elongated gas transfer passageways extending parallel to and disposed on either side of the barrel of the pistol. At the ends of the chambers opposite the aforementioned gas escape ports, and adjacent to the open end of the pistol barrel, these passageways terminate in gas exit ports open to the outside air, which ports extend upwardly and to either side at an acute angle to the vertical. The escape of gas from these ports by reaction tends to force the open end of the pistol barrel downwardly and thus counteracts the tendency of the barrel to move upwardly and to the left upon firing.
  • tubular members forming the gas, passageways are embedded in the pistol stock adjacent the firing chamber, and are retained therein by an annular jacket or cover which, in turn, is retained by a threaded retaining nut screwed into the end of the pistol barrel.
  • This recoil and deflection of the barrel prove to be especially disadvantageous in Olympic rapid firing competition.
  • the contestant has to fire at the target five times within 8, 6 and 4 seconds.
  • the targets are placed side by side at a range of 25 meters from the contestant and at a lateral distance of 75 cm. from each other, so that after each firing the contestant must determine a new target.
  • it is very important for the contestant to be able to determine this new target quickly. It is therefore important that a suitable firearm be provided which exhibits as little deflection as possible upon firing.
  • the gas escape openings were arranged near the cartridge chamber, and the barrel mass (caliber, length and depth of the rifling, and length of the barrel) was reduced in order to achieve a high reaction force.
  • the barrel mass caliber, length and depth of the rifling, and length of the barrel
  • a relatively large quantity of gas had to be discharged through the gas escape openings whereby the bullet velocity was reduced.
  • the reduction of the barrel mass which was necessary to secure the functioning of the pistol, had an unfavorable influence upon the precision of the firearm.
  • Another significant object of the present invention is the provision of an improved rapid fire pistol which reduces the tendency of the barrel to swing upwardly during recoil upon firing of a cartridge.
  • a further noteworthy object of the present invention relates to an improved rapid fire pistol of the type used for Olympic shooting events which facilitates rapid aiming and rapid fire.
  • a rapid fire semi-automatic pistol comprising a rifled barrel, gas escape ports in the walls of the ban-cl adjacent the firing chamber, and a pair of parallel lon gitudinally extending gas conducting passageways disposed on either side of the barrel and communicating at one end with the gas outlet ports of the barrel and communicating at their other end with a pair of gas exit ports open to the outside air and extending upwardly and to either side, preferably at an acute angle to the vertical.
  • FIG. 1 is a vertical sectional view through the barrel and one of the gas conducting passageways of this invention; taken along the longitudinal axis of the pistol;
  • FIG. 2 is a horizontal sectional view similar to FIG. 1;
  • FIG. 3 is a vertical cross-sectional view taken along the lines 3-3 of FIG. 2 and showing the gas escape ports at the end of the barrel.
  • a semi-automatic pistol comprising a stock butt piece 1 and a barrel 2 having a rifled bore 11 therethrough.
  • a pair of small diameter tubes 3 which serve as gas guiding passageways. These tubes 3 are arranged laterally on either side of the barrel 2 and extend longitudinally parallel thereto.
  • These small diameter tubes 3 are embedded in a jacket or cover which surrounds barrel 2 and tubes 3; this jacket is subdivided into a pair of axially aligned members comprising a rear or intermediate member 4 and a forward terminal member 5.
  • jacket members 4 and 5 are removable from the pistol barrel and are, for this reason, inserted onto barrel 2 and tubes 3 in a longitudinally slidable fashion. By means of a nut 6 which is threaded upon the end of barrel 2, the jacket members 4 and 5 are retained in the illustrated position.
  • Front terminal member 5 has rigidly attached thereto a front gun sight 7. A position free of play is especially important for this front terminal member 5 in order to maintain the front gun sight 7 in a fixed position relative to the remainder of the pistol.
  • the pistol has a conventional cartridge chamber 8. Near this chamber 8, i.e. at a distance D of not more than 40 mm, preferably 30 mm, from the forward end of cartridge chamber 8, gas escape openings or holes 10 are provided in the sides of barrel 2 and providing lateral communication from the bore of barrel 2 into each of the gas transfer channels or passageways 3. These passageways guide the escaping gas forward to a pair of discharge nozzles 9, each of which is associated with and located at the end of the respective passageway 3.
  • the discharge nozzles 9 are disposed to either side of the intermediate vertical plane of the pistol barrel 2 within the terminal member 5, adjacent the end of the barrel 2, and are directed upwardly and to one side at an acute angle from said vertical middle plane.
  • the bilaterally symmetrical arrangement of the gas escape holes 10, the tubes or passageways 3, and the discharge nozzles 9, with regard to the axis of the barrel 2, also renders the pistol so stable that the conventional muzzle brake can be omitted.
  • Best lateral stabilization of the pistol can be achieved by disposing each of the discharge nozzles 9 in an inclined position relative to the vertical, for example, at an angle of 16".
  • a further advantage is offered by the lateral arrangement of the discharge nozzles 9 in that the escape of gas therefrom takes place to either sideof the line of sight to the target and does not therefore interfere with sighting on the target itself.
  • the distance of the line of action of the reaction force based upon the nozzle effect from the center of gravity of the pistol can be more than doubled over the known prior art pistols, and therefore the downward moment produced by the escaping gas is likewise more than doubled. Accordingly, the quantity of gas necessary to obtain the desired counter moment can be substantially reduced. Because of the quantity of gas that is in this way made available for firing the cartridge, the barrel caliber can be made somewhat larger in comparison to former known pistols and the barrel also can be made longer, whereby the bullet velocity and thereby the precision can be increased.
  • a further advantage of guiding the gas to the forward end of the barrel according to the instant invention consists of the fact that the gas, which is guided forwardly in the channels, produces a recoil reducing effect which does not only facilitate the handling of the firearm, but also makes possible a corresponding reduction of the counter moment required and a better adjustment of the counter moment to the recoil moment.
  • the jacket members 4 and 5 can easily be removed by unfastening securing nut 6 so that the tubes 3 which are subject to a certain degree of contamination can be cleaned well with a suitable tool.
  • the drawing shows two pairs of gas escape openings 10. It is, however, possible to provide for more or fewer pairs of gas escape openings 10, but the described embodiment of the invention has proved to be especially effective.
  • the distance d between the front and rear pairs of gas escape openings 10 should preferably amount to between 4 and 10 mm, for example, preferably approximately 6 mm.
  • a semi-automatic rapid firing pistol comprising a barrel having one end thereof open, a cartridge chamber, means defining gas escape openings in the wall of said barrel adjacent said cartridge chamber, a plurality of channels communicating at one end thereof with said gas escape openings, a plurality of discharge nozzles communicating with the other end of said channels and opening upwardly to the outside air, gas discharged from said discharge nozzles creating a downward moment counteracting the upward recoil moment of the pistol, a stock piece, said channels comprising tubes inserted into said stock piece, and a jacket surrounding said barrel, said tubes being embedded in said jacket.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Toys (AREA)
US869060A 1969-01-20 1969-10-24 Semi-automatic rapid firing pistol with gas escape openings in the barrel wall Expired - Lifetime US3665804A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH102769A CH480607A (de) 1969-01-20 1969-01-20 Halbautomatische Schnellfeuerpistole mit Gasentweichungsöffnungen in der Laufwandung

Publications (1)

Publication Number Publication Date
US3665804A true US3665804A (en) 1972-05-30

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US (1) US3665804A (de)
CH (1) CH480607A (de)
DE (1) DE1953466A1 (de)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858481A (en) * 1973-03-19 1975-01-07 Otho Harkness Elliott For: compensator system for sporting and target rifles
US4942801A (en) * 1989-03-10 1990-07-24 Wil Schuemann Firearm gun rise and muzzle jump reducer
US5010676A (en) * 1989-03-21 1991-04-30 Cfpi Inc. Hand guard for firearms
US5123328A (en) * 1989-03-10 1992-06-23 Wil Schuemann Firearm barrel with nozzles
US5309814A (en) * 1992-06-10 1994-05-10 O. F. Mossberg & Sons, Inc. Home security barrel assembly
JPH06511548A (ja) * 1992-08-24 1994-12-22 ヘックレル・ウント・コッホ・ゲーエムベーハー 小火器
WO2003039235A2 (en) * 2001-11-08 2003-05-15 Herbert Rosenthal Conduits and nozzles for reduction muzzle jump
US20090233823A1 (en) * 2008-03-11 2009-09-17 Volkswagen Aktiengesellschaft Method for lubricating a clutch-only automatic transmission component requiring lubrication
US8485082B1 (en) 2008-07-01 2013-07-16 Edward Masaki Firearm barrel
US20140007481A1 (en) * 2011-01-17 2014-01-09 GTAMO Outdoor, S.L. Method for manufacturing a bull barrel equipped with a silencer and silencer-equipped bull barrel thus obtained
US9261316B2 (en) 2012-01-13 2016-02-16 Gamo Outdoor, S.L. Method for the manufacture of a barrel for compressed air or CO2 rifles and barrel for compressed air or CO2 rifles obtained
US9273920B2 (en) * 2013-12-30 2016-03-01 The United States Of America As Represented By The Secretary Of The Navy Integral multi-chambered valved suppressor
WO2016114920A3 (en) * 2015-01-13 2016-09-29 Machinegunarmory, Llc Barrel with integrated gas channel
US20190017773A1 (en) * 2017-06-29 2019-01-17 Spike's Tactical, Llc Auto-loading underwater firearm
US20200141682A1 (en) * 2017-12-08 2020-05-07 James Eric McMillan Concentric rifle barrel assembly
US10809033B2 (en) 2017-11-29 2020-10-20 Michael P. Tindal Firearm compensator

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3342615A1 (de) * 1983-11-25 1984-04-05 Horst 3320 Salzgitter Lier Stufenlose einstellmoeglichkeit zum abfuehren ueberschuessiger energie bei pistolen und gewehren
AT396985B (de) * 1988-06-24 1994-01-25 Seidler Heribert Einrichtung zur kompensation der hochschlagenergie von faustfeuerwaffen
EP0406487A1 (de) * 1989-07-07 1991-01-09 Rudi Neubauer Hinterladerpistole für Gewehrmunition
EP0774641A1 (de) * 1995-11-17 1997-05-21 Ratko Jankovic Rückstossreies 20 mm Präzisionsgewehr

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB128824A (en) * 1918-10-24 1919-07-03 Algernon Jasper Lyon Improvements in Pistols.
FR1210602A (fr) * 1946-07-24 1960-03-09 Tech De Rech S Ind & Mecanique Dispositif pour la stabilisation d'affûts de bouches à feu
FR1262942A (fr) * 1960-07-20 1961-06-05 Stabilisateur d'armes
US3516326A (en) * 1967-04-27 1970-06-23 Arno Sten Donner Mortar barrel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB128824A (en) * 1918-10-24 1919-07-03 Algernon Jasper Lyon Improvements in Pistols.
FR1210602A (fr) * 1946-07-24 1960-03-09 Tech De Rech S Ind & Mecanique Dispositif pour la stabilisation d'affûts de bouches à feu
FR1262942A (fr) * 1960-07-20 1961-06-05 Stabilisateur d'armes
US3516326A (en) * 1967-04-27 1970-06-23 Arno Sten Donner Mortar barrel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Roettinger, Phil, Push Back or Flip Up American Rifleman, pp. 54 55, May 1954 *

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3858481A (en) * 1973-03-19 1975-01-07 Otho Harkness Elliott For: compensator system for sporting and target rifles
US4942801A (en) * 1989-03-10 1990-07-24 Wil Schuemann Firearm gun rise and muzzle jump reducer
US5123328A (en) * 1989-03-10 1992-06-23 Wil Schuemann Firearm barrel with nozzles
US5010676A (en) * 1989-03-21 1991-04-30 Cfpi Inc. Hand guard for firearms
US5309814A (en) * 1992-06-10 1994-05-10 O. F. Mossberg & Sons, Inc. Home security barrel assembly
JPH06511548A (ja) * 1992-08-24 1994-12-22 ヘックレル・ウント・コッホ・ゲーエムベーハー 小火器
JP2596525B2 (ja) * 1992-08-24 1997-04-02 ヘックレル・ウント・コッホ・ゲーエムベーハー 小火器
WO2003039235A2 (en) * 2001-11-08 2003-05-15 Herbert Rosenthal Conduits and nozzles for reduction muzzle jump
WO2003039235A3 (en) * 2001-11-08 2004-02-12 Herbert Rosenthal Conduits and nozzles for reduction muzzle jump
US6769346B2 (en) * 2001-11-08 2004-08-03 Herbert Rosenthal Reverse thrust system with integral conduits and nozzles for the reduction of muzzle jump and/or recoil in firearms and weapons
US20050066803A1 (en) * 2001-11-08 2005-03-31 Herbert Rosenthal Reverse thrust system with integral conduits and nozzles for the reduction of muzzle jump and/or recoil in firearms and weapons
US7377205B2 (en) * 2001-11-08 2008-05-27 Herbert Rosenthal Reverse thrust system with integral conduits and nozzles for the reduction of muzzle jump and/or recoil in firearms and weapons
US20090233823A1 (en) * 2008-03-11 2009-09-17 Volkswagen Aktiengesellschaft Method for lubricating a clutch-only automatic transmission component requiring lubrication
US8485082B1 (en) 2008-07-01 2013-07-16 Edward Masaki Firearm barrel
US20140007481A1 (en) * 2011-01-17 2014-01-09 GTAMO Outdoor, S.L. Method for manufacturing a bull barrel equipped with a silencer and silencer-equipped bull barrel thus obtained
US8857307B2 (en) * 2011-01-17 2014-10-14 Gamo Outdoor, S.L. Method for manufacturing a bull barrel equipped with a silencer and silencer-equipped bull barrel thus obtained
US9261316B2 (en) 2012-01-13 2016-02-16 Gamo Outdoor, S.L. Method for the manufacture of a barrel for compressed air or CO2 rifles and barrel for compressed air or CO2 rifles obtained
US9273920B2 (en) * 2013-12-30 2016-03-01 The United States Of America As Represented By The Secretary Of The Navy Integral multi-chambered valved suppressor
WO2016114920A3 (en) * 2015-01-13 2016-09-29 Machinegunarmory, Llc Barrel with integrated gas channel
US9863733B2 (en) 2015-01-13 2018-01-09 Machine Gun Armory, L.L.C. Barrel with integrated gas channel
US20190017773A1 (en) * 2017-06-29 2019-01-17 Spike's Tactical, Llc Auto-loading underwater firearm
US10520278B2 (en) * 2017-06-29 2019-12-31 Spike's Tactical, Llc Auto-loading underwater firearm
US10809033B2 (en) 2017-11-29 2020-10-20 Michael P. Tindal Firearm compensator
US20200141682A1 (en) * 2017-12-08 2020-05-07 James Eric McMillan Concentric rifle barrel assembly

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Publication number Publication date
CH480607A (de) 1969-10-31
DE1953466A1 (de) 1970-07-30

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