EP0107524B1 - Fusil automatique à emprunt de gaz - Google Patents

Fusil automatique à emprunt de gaz Download PDF

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Publication number
EP0107524B1
EP0107524B1 EP83401721A EP83401721A EP0107524B1 EP 0107524 B1 EP0107524 B1 EP 0107524B1 EP 83401721 A EP83401721 A EP 83401721A EP 83401721 A EP83401721 A EP 83401721A EP 0107524 B1 EP0107524 B1 EP 0107524B1
Authority
EP
European Patent Office
Prior art keywords
barrel
locking
piston
unlocking
gun
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
Application number
EP83401721A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0107524A1 (fr
Inventor
Gérard Dumas
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.)
Manufacture Francaise dArmes et Cycles de Saint Etienne S A MANUFRANCE
Original Assignee
D'exploitation Cooperative de la Manufacture D'armes Et De Cycles De Saint-Etienne (scopd Manufrance) Ste
Manufacture Francaise dArmes et Cycles de Saint Etienne S A MANUFRANCE
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 D'exploitation Cooperative de la Manufacture D'armes Et De Cycles De Saint-Etienne (scopd Manufrance) Ste, Manufacture Francaise dArmes et Cycles de Saint Etienne S A MANUFRANCE filed Critical D'exploitation Cooperative de la Manufacture D'armes Et De Cycles De Saint-Etienne (scopd Manufrance) Ste
Priority to AT83401721T priority Critical patent/ATE30956T1/de
Publication of EP0107524A1 publication Critical patent/EP0107524A1/fr
Application granted granted Critical
Publication of EP0107524B1 publication Critical patent/EP0107524B1/fr
Expired 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

Definitions

  • the present invention relates to an automatic gas-driven rifle of the type in which the locking / unlocking mechanism of the weapon, which also causes the ejection of the casing and which is housed in the breech box, is actuated automatically upon unlocking under the effect of a borrowing of gas in the barrel, and is brought back into the locked position by a recuperator spring which also carries out the supply of a new cartridge located in a magazine tube.
  • the gases borrowed from the barrel are introduced into a gas chamber integral with the barrel and in which circulates a piston driven back in one direction by the action of the gases, and permanently subjected, on its other face, to the action of a recovery spring pushing the piston in the opposite direction, the piston being generally connected to a movable cylinder head by a link system with articulated rods.
  • the majority of the coagulant parts are either produced in the form of complex parts in one piece. , or made mutually integral by rigid functions such as pins, screws and / or welds.
  • the automatic gas-powered rifle is of the type in which the mechanism for locking / unlocking the weapon, which also causes the ejection of the sleeve, and which is housed in the breech box is actuated automatically upon unlocking under the effect of a gas borrowing in the barrel and is automatically returned to the locking position by a recuperative spring, which also supplies a new cartridge located in a magazine tube, said rifle being of the type comprising a piston driven by the force of the gases borrowed from the barrel sliding in a piece of attachment to the barrel and surrounding the magazine tube, said piston consisting of a cylindrical block having a section which fits into a recess in the annular part by delimiting an annular gas storage chamber; said piston cooperating during its movement with means for transmitting the movement of the piston comprising lateral arms and authorizing the operation of the mechanism for locking / unlocking the weapon by means of control means.
  • the present invention aims to eliminate the drawbacks mentioned above, by providing, in an automatic rifle of the type indicated above, a simple assembly without articulation, screw, nut, or the like.
  • the transmission means comprise two coaxial rings juxtaposed end to end slidingly mounted on the magazine tube and one of which carries two lateral longitudinal U notches opening horizontally towards the exterior and the other is provided with two lateral longitudinal U-shaped notches opening vertically upwards, and comprising, two flat and elongated lateral arms each of which is engaged in a horizontal notch and a vertical notch both located in the same side of the barrel, the ends of said arms facing the breech box being arranged to be associated with the intermediate means for controlling the locking / unlocking mechanism capable of freely driving said mechanism inside the breech box to bring it to lock / unlock with respect to the barrel (1).
  • the means for transmitting the movement of the piston, the locking / unlocking mechanism and the means for controlling this mechanism are separately made up of several parts as simple as possible, nested - with or without backlash - into each other, which also allows for simplified manufacture with less complex shapes, and therefore with a reduced cost price.
  • the reference 1 designates the barrel
  • the reference 2 the breech box and the reference 3 a tube magazine housing the cartridges and connected to the cylinder head box opposite a lifting system 4 used to introduce the cartridge into the chamber 5.
  • the magazine tube is fixed in a fastening part 6 of the barrel, welded to the latter and having the shape of a cylindrical sleeve crossed by the magazine tube 3 and which comprises a coaxial recess 7 (see also fig. 2 and 3) leaving a front flange 8 enclosing the magazine tube.
  • a smooth hollow piston 9 having the shape of a cylindrical sleeve and provided with a front collar 10 of reduced diameter abutting against the bottom of the 'recess 7 (against the flange 8), this collar 10 delimiting with the recess 7 an annular chamber 11 (fig. 2 and 3) which is connected to the inside of the barrel 1 by at least one oblique passage as marked by reference 12.
  • the length of the piston 9 and of the recess 7 are identical so that the rear faces of the piston 9 and of the attachment piece 6 are level when the piston 9 is completely retracted into the recess 7.
  • the means 13 for transmitting the movement of the piston 9 are constituted by two coaxial rings 16, 17 juxtaposed by being slidably mounted on the magazine tube 3 while being pushed permanently towards the piston 9 by the recuperator spring 18 and by two actuating arms longitudinal 19, 20.
  • the spring 18 is a helical pressure spring mounted between the cylinder head box 2 and the rear ring 17.
  • the front ring 16 is in the form of a sleeve carrying a kind of upper heel 21 provided with two longitudinal and horizontal lateral wings 22 enclosing a slightly curved central surface.
  • This ring 16 carries two longitudinal U-shaped notches 23 opening laterally outward.
  • the rear ring 17 is in the form of a thin ring in the longitudinal direction carrying at its upper part two lateral corner thickenings 24 carrying longitudinal U-shaped notches 25 opening vertically upwards.
  • the arms 19, 20 are flat and elongated lateral arms, each of which is engaged in a horizontal notch 23 and in a vertical notch 25, located on the same side of the barrel 1.
  • the arms 19, 20 are fixed, at their end situated on the side of the piston 9, on the tank 16, by means of vertical stepped parts 26 limiting a rectangular longitudinal cut 27 formed in each arm.
  • the length of the cutouts 27 is slightly greater than the longitudinal thickness of the ring 16, while their height corresponds to the width of the notch 23, so that the edges of the stepped parts 26 enclose the ring 16 by mutual interlocking.
  • the arms 19, 20 are fixed against any lateral displacement in the notches 25 of the tank 17.
  • the arms 19, 20 are connected by stud and notch assemblies - as described below - to the means 14 for controlling the locking mechanism.
  • the arm 19 comprises a projection 28 and a cutout 29, these two elements being directed upwards and contiguous. Furthermore, the arm 20 carries an elongated horizontal lumen 30, as well as a vertical end shoulder 31.
  • the means 14 for controlling the mechanism 15 for locking / unlocking the rifle are constituted by two superimposed parts aligned in the breech box 2, namely a lower part 32 in the form of a plate or horizontal sole and an upper part 33 in the form of elongated parallelepiped block, the parts 32 and 33 interpenetrating by mutual interlocking as indicated below.
  • the sole 32 comprises, on a longitudinal side of its polygonal periphery, a cutout 34 and a projection 35, horizontal, engaging by interlocking with the projection 28 and the cutout 29 of the arm 19.
  • the sole 32 further comprises, on its opposite longitudinal side, a projection 36 and a shoulder 37, horizontal, engaging with the lumen 30 and the shoulder 31 of the arm 20.
  • the sole 32 has a rectangular central cutout 38.
  • the upper part 33 of the control means 14 comprises a lower central tenon 39, engaged in the central cutout 38, thus being blocked against any horizontal movement in the latter.
  • the part 33 also includes a transverse cylindrical orifice 40 into which an unlocking finger 41 can be introduced.
  • the locking / unlocking mechanism 15 comprises a locking block 42 of generally elongated parallelepipedal shape open at its lower part and at its upper part.
  • This block 42 actually encloses a free space in which is housed, with a certain longitudinal play, the part 33 of the control means 14, which can move there parallel to the axis of the barrel 1 and of the magazine tube 3.
  • a horizontal slot 43 On a longitudinal side of the block 42 is formed a horizontal slot 43 in which the unlocking finger 41 can slide.
  • the mechanism 15 further comprises a latch 44 in the form of a tilting hammer head resting freely inside the block 42 on the part 33 of the control means 14.
  • This lock has oblique lower surfaces of front and rear end 45, 46 with opposite slopes rising towards the middle part of the lower face. lower and resting against the front and rear transverse edges and / or the flat upper face of the part 33.
  • the lock has at its upper front end, a locking heel 47, capable of snapping into an opening 48 in the rear upper end of the barrel tube 1.
  • FIG. 2 showing a partial axial section of the rifle in the cocked state
  • FIG. 3 showing the same sectional view of the rifle in a transient state appearing when fired.
  • the recovery spring 18 then pushes forward all of the rings 16, 17 and the piston 9 in the armed position.
  • the arms 19, 20 which are hooked to the rings 16, 17 pull forward all of the means 14 for controlling the mechanism 15, which has the effect that the front edge of the block 33 pushes towards the top the latch 44, by its oblique front surface 45, while the rear edge of the block 33 advances by allowing the rear of the latch 44 to be lowered.
  • the locking heel 47 rises and is blocked in opening 48.
  • the cartridge is raised by the lifting system 4 and is introduced into the chamber 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Telescopes (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP83401721A 1982-10-25 1983-08-30 Fusil automatique à emprunt de gaz Expired EP0107524B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401721T ATE30956T1 (de) 1982-10-25 1983-08-30 Gasbetriebenes automatisches gewehr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8217820 1982-10-25
FR8217820A FR2535041A1 (fr) 1982-10-25 1982-10-25 Fusil automatique a emprunt de gaz

Publications (2)

Publication Number Publication Date
EP0107524A1 EP0107524A1 (fr) 1984-05-02
EP0107524B1 true EP0107524B1 (fr) 1987-11-19

Family

ID=9278554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401721A Expired EP0107524B1 (fr) 1982-10-25 1983-08-30 Fusil automatique à emprunt de gaz

Country Status (5)

Country Link
EP (1) EP0107524B1 (es)
AT (1) ATE30956T1 (es)
DE (1) DE3374594D1 (es)
ES (1) ES8406714A1 (es)
FR (1) FR2535041A1 (es)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2373204A (en) * 1943-03-05 1945-04-10 Carl G Swebilius Gas-operated self-loading firearm
FR1278395A (fr) * 1960-01-21 1961-12-08 Olin Mathieson Dispositif de démontage d'armes à feu
US3200710A (en) * 1963-12-27 1965-08-17 Remington Arms Co Inc Gas operating mechanism for autoloading firearm
US3242606A (en) * 1965-07-01 1966-03-29 High Standard Mfg Corp Action-bar connection for firearms
IT959744B (it) * 1972-05-19 1973-11-10 Franchi Spa Luigi Dispositivo di recupero dei gas di sparo per fucili automatici particolarmente per fucili da caccia
IT1049730B (it) * 1975-11-21 1981-02-10 Franchi Spa Luigi Dispositivo azionato a gas per il comando dei meccanismi di ricarica di un fucile semi automatico a presa di gas

Also Published As

Publication number Publication date
FR2535041A1 (fr) 1984-04-27
EP0107524A1 (fr) 1984-05-02
ES526748A0 (es) 1984-07-01
ATE30956T1 (de) 1987-12-15
DE3374594D1 (en) 1987-12-23
FR2535041B1 (es) 1985-02-08
ES8406714A1 (es) 1984-07-01

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