US3282166A - Gas operated automatic gun - Google Patents

Gas operated automatic gun Download PDF

Info

Publication number
US3282166A
US3282166A US396034A US39603464A US3282166A US 3282166 A US3282166 A US 3282166A US 396034 A US396034 A US 396034A US 39603464 A US39603464 A US 39603464A US 3282166 A US3282166 A US 3282166A
Authority
US
United States
Prior art keywords
breech
casing
gun
breech casing
breech body
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
US396034A
Other languages
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 US3282166A publication Critical patent/US3282166A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
    • F41A21/484—Barrel mounting means, e.g. releasable mountings for replaceable barrels using interlocking means, e.g. by sliding pins
    • 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
    • F41A11/00—Assembly or disassembly features; Modular concepts; Articulated or collapsible guns
    • 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
    • F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
    • F41A15/12—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns
    • F41A15/16—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns the ejector being mounted on the breech housing or frame
    • 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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • 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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • F41A19/31—Sear arrangements 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
    • F41A21/48—Barrel mounting means, e.g. releasable mountings for replaceable barrels
    • F41A21/482—Barrel mounting means, e.g. releasable mountings for replaceable barrels using continuous threads on the barrel
    • 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
    • F41A25/00—Gun mountings permitting recoil or return to battery, e.g. gun cradles; Barrel buffers or brakes
    • F41A25/10—Spring-operated systems
    • F41A25/12—Spring-operated systems using coil springs
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/36—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing
    • F41A3/38—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having rocking locking elements, e.g. pivoting levers or vanes
    • F41A3/40—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having rocking locking elements, e.g. pivoting levers or vanes mounted on the bolt
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/66—Breech housings or frames; Receivers
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/78—Bolt buffer or recuperator means
    • F41A3/82—Coil spring buffers
    • 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
    • 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
    • F41A7/00—Auxiliary mechanisms for bringing the breech-block or bolt or the barrel to the starting position before automatic firing; Drives for externally-powered guns; Remote-controlled gun chargers
    • F41A7/02—Machine gun rechargers, e.g. manually operated
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/29—Feeding of belted ammunition
    • F41A9/32—Reciprocating-slide-type belt transporters
    • 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/54—Cartridge guides, stops or positioners, e.g. for cartridge extraction

Definitions

  • the present invention relates to at least partly selfacting guns, this term including automatic or semi-automatic guns, advantageously of a caliber ranging from 20 to 50 mm., comprising a breech body having longitudinal displacements and provided with at least one locking member adapted to be held in operative position by a control member movable longitudinally with respect to said breech body.
  • the gun according to the present invention is characterized by the fact that its breech body comprises an extension provided with a longitudinal bore intended to receive, slidable therein, a transmission push-piece belonging to a gas tap unlocking device, said push-piece being interposed between the control member and an unlocking piston.
  • FIG. 1b is a section in the same plane as that of FIG. 1a showing the portion of said machine gun located directly behind that illustrated by FIG. la;
  • FIGS. 20 and 2b are substantially vertical sectional views corresponding to FIGS. 1a and 1b, slightly offset with respect thereto;
  • FIGS. 30 and 3b are axial horizontal sections corresponding to FIGS. la and 1b;
  • FIG. 5 is a cross section of the machine gun on the line VV of FIG. 2a;
  • FIG. 8 is a cross section of the machine gun on the line VIII-VIII of FIG. 2b;
  • FIG. 9 is a cross section of the machine gun on the line IXIX of FIG. 2b;
  • FIG. 10 is a half cross section of the machine gun on the line XX of FIG. 2b;
  • FIG. 11 is an end view of the machine gun seen from the right hand side of FIG. 2b;
  • FIG. 12 shows, on an enlarged scale, the cartridge chamber of the machine gun
  • FIG. 13 shows, an an enlarged scale, a detail of the structure illustrated by FIG. 3a;
  • FIGS. 14 and 15 show, similarly to FIG. 2b, two modifications, respectively, of a machine gun according to the present invention.
  • the following description relates to the case of a heavy machine gun, for instance of a caliber equal to mm.
  • This gun comprises a tubular breech casing 1 of circular cross section and of substantially uniform diameter and thickness (the outer-diameter being of the order of -130 mm.). Said breech casing 1 is provided, in its upper part, with an opening 2 adapted to receive a cartridge feed mechanism and in its under part, with an opening 3 for the ejection of spent cartridge cases.
  • This breech casing 1 constitutes a kind of frame in the form of a tubular beam having a maximum rigidity for a given weight of metal.
  • Breech casing 1 may be made from a section of a tube, for instance of drawn and treated steel. It may also be made of two halves assembled, for instance by welding, along generatrices. Otherwise, the machining of the breech casing can be made essentially by boring and turning and its manufacture is therefore particularly simple and economical.
  • breech casing 1 In this breech casing 1 there is rigidly fixed a sleeve 5 to which the barrel 7 of the gun is fitted in a removable manner, through a bayonet joint 6.
  • Sleeve 5 is provided, near the rear end thereof, with a reinforcing flange 8 the external diameter of which is equal to the internal diameter of breech casing 1.
  • Said breech casing 1 is provided, on the inside thereof, with an annular groove 9 adapted to accommodate a resilient split ring 10 projecting inwardly with respect to the inner wall of breechcasing 1 and acting as a rear abutment for sleeve 5.
  • breech casing 1 is provided with internalscrew threads 11 cooperating with a nut 12 forming a front abutment for sleeve 5 by contact with a shoulder 13 thereof.
  • Nut 12 carries a fixation lever 14 resiliently acted upon by a spring and capable, on the one hand, by engagament into a longitudinal groove 15 of barrel 7, of fixing said barrel withrespect to sleeve 5, thus preventing it from disengaging from bayonet joint 6, and, on the other hand, of blocking nut 12 with respect to breech casing 1.
  • the greatest portion of sleeve 5, extending from flange 8 to shoulder 13, is of cylindrical outer shape and has an external diameter smaller than the internal diameter of breech casing 1.
  • a fixed inverted U-shaped strap 16 open at its lower end (see FIG. 4) and, extending from front to rear, several recoil absorbing springs 17.
  • Fixed strap 16 has an external surface fitting to that of the inner wall of breach casing 1, which can therefore slide with respect to said strap.
  • springs 17 disposed symmetrically with respect to the axis of the barrel (see FIGS. 1 and 4), said springs being of helical shape and each wound about a tubular guide 18 which bears at the rear against strap 16 through a flange 19 integral with said guide 18.
  • Each of the springs 17 bears, at the rear, on said flange 19 and, at the front. through a cap 20 wherein guide 18 is slidable, on shomder 13.
  • Nut 12 is provided with an annular recess 21 open at the rear and into which fixed guides 18 slide freely when the gun is recoiling.
  • a cartridge feed device front support 28 Inside breech casing 1 and immediately at the front of the upper opening 2, there is provided a cartridge feed device front support 28 the outer surface of which has, at least partly, as shown by FIG. 5, the shape of a portion of a circular cylinder fitting in the inner wall of breech casing 1.
  • Support 28 is provided with two vertical extensions 29 through which passes a spindle 30 forming the pivot axis for the lid 4 and the under part 4a of the feed device. Extensions 29 fit against the edges 31 of an opening provided at the upper part of breech casing 1, thus angula-rly securing support 28.
  • the gun includes a movable breech which essentially comprises a breech body 34 in which is slidably mounted with a limited amplitude of movement a firing pin 35.
  • This firing pin 35 is urged frontwardly with respect to breech body 34 by a firing pin spring 36 as far as the position shown by FIGS. 2a, 3a and 13 wherein the front point of firing pin 35 projects to the outside of breech body 34.
  • the middle portion of firing pin 35 ha a substantially rectangular cross section enlongated in the horizontal direction.
  • firing pin spring 36 bears against the bottom of a recess 37 provided at, and open toward, the rear end of firing pin 35 and the rear end of said spring 36 bears against the end face of a plug or cap 38, of general cylindrical shape, provided at its front with two lateral projections 38a.
  • breech body 34 is provided with a bore 340 of a diameter equal to D followed by two half cylindrical housings 34b disposed symmetrically with respect to the vertical plane passing through the axis of said breech body 34 and intended to accomodate projections 38a of cap 38.
  • Said cap 38 is mounted in breech body 34 by being driven (with its projections 3801 directed vertically) through a vertical recess 3411 (FIG.
  • Firing pin spring 36 is a helical spring and a cy-lindrical floating member 39 is located in said spring.
  • This member 39 preferably has an axial length 0 such that it fills up the space available between the rear end face of cap 38 and the bottom of the recess 37 of firing pin 35 when the latter is in its rear end position.
  • cap 38 is provided with a recess 38b against the bottom of which spring 36 bears and against which member 39 is also applied when it is in its rearmost position.
  • member 39 is placed in spring 36.
  • locking members 40 are each provided, at the rear thereof, with a central projection 43 housed in a corresponding recess 41 of breech body 34 so as to be flush with the vertical walls of a passage 34 which constitutes a guide in the breech body 34.
  • Each projection 43 includes a locking face 43a and, at the rear, a spreading face 43b adapted to be pushed outwardly, by an oblique face 44 carried by firing pin 35, into the position shown by FIGS. 3a and 13. In this position, a locking face 45, provided at the rear of each locking member 40. comes into contact with a cooperating locking face 46, provided in the inner surface of each of the arms 5a of sleeve 5.
  • Faces 45 and 46 have an inclination with respect to the direction of the forces transmitted from breech body 34 to its locking members 40 such that, account being taken of the relative friction coefiicient of the constituting materials of locking members 4-0 (face 45) and breech body 34 (face 46), any effect exerted in the rearward direction upon locking members 40 tends to drive them toward the inside.
  • the front portion of a piston 56, slidable in cylinder 47, is provided with a recess 57 forming, together with a recess 58 provided in plug 49, an expansion chamber intended, in combination with calibrated orifice 50, to delay the action of the powder gases upon piston 56.
  • the rear portion of said piston 56 is provided with a recess 59 located in its lower part and in which is housed a return spring 61) the front end of which bears upon the end wall of recess 59 and the rear end of which bears upon a support 61.
  • This support 61 has an outer transverse cross section corresponding to the inner transverse cross section of breech casing 1 and it is fitted in sleeve 5 before its introduction into the breech casing, by sliding in a direction perpendicular to the axis of said breech casing. Furthermore, support 61 bears in the rearward direction against split ring 10.
  • the rear edge 62 of piston 56 cooperates with firing pin 35 and breech body 34 in the following manner.
  • breech body 34 is provided with a smooth bore 63 the longitudinal axis of which is located in the vertical plane of symmetry of breech casing 1.
  • this bore 63 there is mounted, slidable with a limited amplitude parallelly to the axis of the barrel, a push-piece 64 provided at its end with a transverse flange 65.
  • This flange 65 is engaged in a transverse groove 66 provided in the body of firing pin 35.
  • push-piece 64 is made rigid with firing pin 35 (which cooperates with the above mentioned abutment face 67 provided on breech body 34) to limit the displacement of said firing pin 35 toward the front with respect to breech body 34, that is to say to limit the distance by which the front end point of firing pin 35 projects frontwardly from breech body 34.
  • firing pin 35 When firing pin 35 is in position for firing, push-piece 64 projects frontwardly from the portion 68 of breech body 34 that surrounds said push-piece by a length 1 which is equal to the distance firing pin 35 must move back with respect to breech body 34 to permit release of the breech.
  • Breech body 34 may be provided with a recess 69 to reduce its weight.
  • breech body 34 cooperates with the wings 72 of the slideways only along the inner edges thereof, owing to angular contact surfaces 74 provided at four places on breech body 34.
  • elongated spaces are left beween breech casing 1 and the volume swept by the breech, both on the inside and on the outside of slideways 71 and 72, which spaces are used as it will be hereinafter explained for housing some mechanisms of the gun.
  • a first mechanism housed between the wings 72 of the left hand side slideways consists of an elongated tubular cam 75 for actuating the cartridge feed mechanism of the gun.
  • This cam 75 is adapted to oscillate about its longitudinal axis, which is parallel to that of barrel 7 but is offset laterally with respect thereto, owing to its mounting between two thrust bearings, to wit a front bearing 76 provided in a transverse partition rigid with the rear portion of that of the left hand front slideway element 70 and a rear bearing 77 provided in a rear plate 78.
  • This plate 78 is kept in position longitudinally by being tightly held between the ends of the rear slideway elements 71 and the front face of a concave closing block 79 and, in rotation, by engagement of the rear edges of the wings 72 of said elements between projections 79a provided on the front wall of said plate 78, which projections further prevent deformations of wings 72.
  • Block 79 is fixed in a removable manner at the rear of breech casing 1, for instance through a bayonet joint 80, this block 79 being prevented from disengaging by rotation owing to the provision of a locking lever 81 analogous to lever 14.
  • Plate 78 is provided with an elastic lockwire 82 serving merely to prevent said plate from escaping from breech casing 1 when block 79 is removed.
  • Cam 75 is of a length averaging'that of the stroke of breech body 34 (which stroke is visible by comparison between FIGS. 1a, 1b and 2a, 2b) and it extends from the rear end of breech casing 1 at least to the rear edge 2 of the cartridge A which is being introduced (FIG. 1b).
  • the front portion of this cam 75 therefore extends above ejection opening 3, not vertically over it, but on the left thereof when looking toward the front, as shown by FIGS. 3:: and 6.
  • Cam 75 is provided with a helical slot 83 in which is engaged at finger 84 rigid with and projecting from the left hand side of breech body 34 (FIG. 6) and at the rear end thereof (FIGS.
  • the feed mechanism is advantageously of the type described in U.S. Patent No. 3,198,075 as Well as in the Luxembourg Patent application No. 40,215 of June 2, 1961 and in the addition thereto No. 40,296 of June 21, 1961. It comprises a lever 85 guided by rollers 86a carried by two spindles 86 fixed to lid 4 and which is slida'ble transversely with a reciprocating translation movement to perform the feed of a cartridge belt and also the successive feed of the cartridges of said belt to position A.
  • the vertically bent end 85a of this lever 85 carries a roller 87 engaged in a transverse slot 88 of breech casing 1 located in the upper portion of said breech casing.
  • a toothed portion 89 of cam 75 cooperates with a toothed sector 90 having therein a recess 91 in which roller 87 is slidably held (FIG. 7).
  • toothed portion 89 is provided about at mid length of cam 75 and the ends of said cam engaged in bearings 76 and 77 are practically identical so that cam 75 can be mounted with either end thereof at the front.
  • Toothed sector 90 is housed wholly on the inside of breech casing 1 and it is located at the rear of the rear end of opening 2 serving to the introduction of cartridges.
  • toothed sector 90 conforms exactly to the internai surface of breach casing 1 which thus constitutes :a guide for said sector 90.
  • the web 73 of slideways 71, in which said cam is mounted is provided with a passage 92 the front and rear edges of which guide the sides 90b of toothed sector 90.
  • the inner face of toothed sector 90 is further guided by the external wall of a support 93 which will be hereinafiter referred to.
  • v Toothed sector 90 has, transverseiy, a shape and dimerisions such that, account being taken of the positions and dimensions of slideways 71, it can be brought by rotation (in the clockwise direction, FIG. 7) to a position Where it is cleared by said slideways, above them, which permits of mounting it by loingitudinal translation after disengagement of roller 87.
  • a second mechanism of the gun housed between the wings 72 of the right hand side slideway 71, is a mechanism for stopping fining. It includes a sear 94 and its shock absorbing device comprising for instance a spring 95 and its tubular guide 96. Sear 94 and guide 96 are mounted about ,a pin 97 which extends through slots 98 provided in the wings '72 of the right hand side slideway 71, these slots limiting the deformations of spring 95 during the operation. Sear 94 has a stop face 94a which cooperates with a stop face 99 (FIG. 6) provided on the breech body 34. Sear 94 is further provided with a spring mounted return piston 100 which urge-s said sear 94 toward the inside of breech casing 1.
  • the Web 73 of slideway 71 is provided with a recess 101 the front edge 102 of which recess forms an inclined plane cap-able of fully ensuring the engagement of scar 94 with the stop face 99 of breech body 34 when, during the compression of spring 95, the face 94b of said sear 94 reaches said front edge 102.
  • the lower edge of Support 93 has, above the end of pin 97, an abutment surface 930 capable of preventing said pin from moving out from slots 98 (FIGS. 7 and 10).
  • guide 96 through the rear portion of which pin 97 extends, may be maintained at the front by sliding in a hole 103 provided in a transverse partition 104, said partition b-elonging to the rear portion of the right hand side front slideway 70.
  • a third mecha nism consisting of a return spring 105, of helical shape, disposed about a longitudinal tubular guide 106.
  • This guide 106 is maintained at the front by support 61 and at the rear by closure block 79 in which it is secured by a self locking device.
  • Return spring 105 bears at the front against a cup shaped member 107 integral with breech body 34 and projecting therefrom downwardly toward the left, as shown by FIGS. and 6.
  • Guide 106 beats upon closure block 79 through two pins 110 belonging to a plug 109 rigid with guide 106 and against which spring 105 is bearing.
  • closure block 79 is provided with two recesses 111 to accommodate the ends of two stop levers 108 in the locking position shown by FIGS. 1 and 11, wherein levers 108 are urged by a spring 112.
  • Pins 110 cooperate with a groove 113 provided in block 79, so as to form a kind of bayonet joint.
  • spring 112 In order to disengage guide 106, it therefore suflices to bear simultaneously upon the inner ends of levers 108 against the action of spring 112, for instance by means of a screwdriver, which disengages these levers from recesses 111 and permits of rotating plug 109 in the direction which disengages pins 110 from groove 113.
  • Spring 105 then pushes plug 109 and guide 106 outwardly. It should be noted that this guide 106, and also spring 105, pass through a notch 78a provided in plate 78 in order to permit of removing the breech body.
  • a fourth mechanism to wit the resetting mechanism.
  • This mechanism comprises a chain 114 guided in a tubular guide 115 in such manner that, by rotation of a pinion 116 in mesh with said chain 114, it is possible either to pull said chain rearwardly for resetting the gun or to push it in the direction which places the chain out of action.
  • Guide 115 is held, longitudinally, at the front by support 61 (FIG. 5) and at the rear by a projection 117 integral with plate 78 and, laterally, by the cooperation of fins 118 rigid with guide 115 with the inner wall of breech casing 1.
  • Guide 115 is provided with a longitudinal slot 119 (FIGS. 2a and 7) from which projects a slider 120 connected with the front end of the chain and adapted to come into contact with the rear portion of a hooking projection 121 carried by push-piece 64- at the bottom part of the right hand side thereof.
  • Pinion 116 is fixed on a spindle 122 which extends throughout the rear portion of breech casing 1, as shown o by FIG. 8, and also through the wings 72 of the right hand side slideway 71.
  • a crank lever 123 Upon the portion of spindle 122 that projects downwardly from breech casing 1 there is fixed a crank lever 123.
  • this lever 123 In order to reset the gun, it suffices to rotate this lever 123 in the direction that moves toward the rear, first, slider 120 and consequently pushpiece 64 and firing pin 35, and then, after the locking members 40 have been released by locking faces 43a, breech body 34 by contact of firing pin 35 with plug 38.
  • the portion of chain 114 located at the rear of pinion 116 can move out laterally from breech casing 1 through a passage 124 (FIG. 8).
  • the four mechanisms which have been described extend from the rear of breech casing 1 to at least the transverse plane passing through the rear edge t of the cartridge A that is being introduced (FIG. 1b). It is' still possible to house at least one other mechanism in the elongated space located above the upper wings 72 of the slideways rearwardly of said rear edge, such a mechanism being an ejector with a damping device and/or a rod for stopping the gun after the last shot, with the breech open.
  • breech body 34 is provided at its upper end with a longitudinal recess 34j for the passage of ejector 126. Furthermore, above rods 127 and in the vertical plane passing through the axis of breech casing 1, there is mounted, slidable in walls 93a and 93b, a rod for stopping the gun after the last shot, the breech being open, said rod being designated by reference numeral 129 (FIGS. 1b and 6). Such a rod is moved frontwardly, when the feed mechanism is emptying, against the action of a return spring 130 and then causes breech body 34 to be caught by sear 94.
  • spindle 131 is secured not only by a resilient pin 134, extending both through breech casing 1 and through support 93 and engaging in a groove 135 provided in spindle 131, but also by the sides 4b of lid 4, whereas pin 134 is itself secured by spindle 133 which is then above it.
  • a trigger mechanism supported by spindle 122, On which it is mounted loose.
  • Such a mechanism includes, on the outside of breech casing 1 and on the side opposed to crank lever 123, a trigger lever 136 and, on the inside of said breech casing 1, an intermediate lever 137 connected through dog clutch means with trigger lever 136 and a second intermediate lever 138 connected to the first one through an equalizer bar 139 subjected to the influence of stop rod 129.
  • Breech body 34 is held in rear position by sear 94 and a cartridge A is in position for being introduced into the gun.
  • Firing pin 35 is held rearwardly with respect to the breech body against the action of spring 36, by contact of its oblique faces 44 with the spreading faces 43b of locking members 40, which are kept inside recesses 41 by contact of faces 43c withthe wings 72 of slideways 71.
  • Firing pin 35 is thrust in its frontward movement by the mass of plug 38 which keeps moving frontwardly under the effect of inertia against the action of spring 36, which spring is compressed until it stops said plug 38 and pushes it back toward the rear.
  • floating member 39 is projected toward the front by inertia, which movement, on the one hand, further facilitates the relative displacement of firing pin 35 toward the front with respect to breech body 34 and, on the other hand, prevents rebounding of said firing pin toward the rear.
  • the feed device comprises a fixed lid 40 and a sliding member 143 which is 1Q to be given a horizontal reciprocating transl'atory movement.
  • the connection then consists in the following elements:
  • a second toothed sector 148 also carriedby spindle 146 and in mesh with a rack 149 carried by sliding member 143.
  • the feed mechanism comprises a fixed lid 4d and a sliding member 150 movable with a longitudinal reciprocating translatory motion, this member 150 being guided, in the same manner as the lever 85 of FIGS. 1a, lb and 2a, 2b, by means of two spindles 86 and rollers 86a.
  • toothed sector 90d and the feed mechanism comprises a roller 151 carried by toothed sector 90d on the outside of breech casing 1 and cooperating with an elongated groove 152 provided in sliding member 150.
  • said groove has, in a direction parallel to the axis of breech casing 1, a length greater than the above mentioned value b.
  • An at least partly self acting gun which comprises, in
  • At least one locking member movably carried by said breech body and adapted to cooperate with said breech casing
  • At least one control member slidable longitudinally in said breech body for actuating said locking member to move it into cooperating locking position with respect to said breech casing
  • gas tap unlocking means including a cylinder rigid with said breech casing, a piston slidable in said cylinder, and means for operatively connecting said piston with said push-piece,
  • said gas tap unlocking means acting on said control member to control the rearward movement thereof
  • a cap slidably mounted longitudinally with respect to said breech body and tree from contact with said breech casing
  • abutment means carried by said cap and said breech body for limiting the rearward displacement of said cap with respect to said breech body
  • a damping and accelerating spring mounted in said breech casing so as to have its rear end fixed with respect to said casing, said last mentioned spring being mounted in a position such that said breech body comes to bear upon it at the end of every rearward stroke of said breech body, said cap being adapted to come into contact with said spring at the same time as said breech body.
  • An at least partly self acting gun which comprises, in
  • At least one looking member movably carried by said breech body and adapted to cooperate with said breech casing for locking said breech body with respect to said breech casing.
  • At least one locking control member slidable longitudinally in said breech body for actuating said locking member to move it into cooperating locking position with respect to said breech casing
  • said gun barrel and said gas tap cylinder being provided with a rtap passage for the flow of powder gases from l 2 the inside of said gun barrel to said gas tap cylinder to act upon said gas tap piston, an extension integral with said breech body provided with a longitudinal bore parallel to said gun barrel and intermediate between the axis thereof and the axis of said gas rtap cylinder, and a push-piece slidable in said bore and operatively connected with said control member in the longitudinal direction, the only connection between said gas tap piston and said control member being through the pontion of the rear edge of said gas tap piston nearest to the axis of said gun barrel bearing upon the portion of the front edge of said push-piece farthest iro-m the axis of said gun barrel to produce rearward movement of said control member when a shot is fired.
  • said push-piece is positively connected in the longitudinal direction with said control member.
  • An at least partly self acting gun which comprises,
  • At least one looking member movably carried by said breech body and adapted to cooperate with said breech easing
  • At least one control member slidable longitudinally in said breech body for actuating said locking member to move it into cooperating locking position with respect to said breech casing
  • gas tap unlocking means including a cylinder rigid with said breech casing, a piston slidable in said cylinder, and means for opera Lively connecting said piston with said push-piece,
  • said gas tap unlocking means acting on said control member to control the rearward movement thereof
  • said plush-piece including a booking projection intended to cooperate with said resetting device.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Catching Or Destruction (AREA)
  • Toys (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Adornments (AREA)
  • Spray Control Apparatus (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Confectionery (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
US396034A 1963-09-19 1964-09-14 Gas operated automatic gun Expired - Lifetime US3282166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU44465 1963-09-19

Publications (1)

Publication Number Publication Date
US3282166A true US3282166A (en) 1966-11-01

Family

ID=19723511

Family Applications (6)

Application Number Title Priority Date Filing Date
US396035A Expired - Lifetime US3282165A (en) 1963-09-19 1964-09-14 Pivoted breech block locking member for automatic guns
US396032A Expired - Lifetime US3277786A (en) 1963-09-19 1964-09-14 Semi-automatic or automatic guns
US396030A Expired - Lifetime US3282162A (en) 1963-09-19 1964-09-14 Cartridge feeding mechanism for automatic guns
US396033A Expired - Lifetime US3253513A (en) 1963-09-19 1964-09-14 Semi-automatic or automatic guns
US396034A Expired - Lifetime US3282166A (en) 1963-09-19 1964-09-14 Gas operated automatic gun
US396031A Expired - Lifetime US3242812A (en) 1963-09-19 1964-09-14 Semi-automatic or automatic guns

Family Applications Before (4)

Application Number Title Priority Date Filing Date
US396035A Expired - Lifetime US3282165A (en) 1963-09-19 1964-09-14 Pivoted breech block locking member for automatic guns
US396032A Expired - Lifetime US3277786A (en) 1963-09-19 1964-09-14 Semi-automatic or automatic guns
US396030A Expired - Lifetime US3282162A (en) 1963-09-19 1964-09-14 Cartridge feeding mechanism for automatic guns
US396033A Expired - Lifetime US3253513A (en) 1963-09-19 1964-09-14 Semi-automatic or automatic guns

Family Applications After (1)

Application Number Title Priority Date Filing Date
US396031A Expired - Lifetime US3242812A (en) 1963-09-19 1964-09-14 Semi-automatic or automatic guns

Country Status (9)

Country Link
US (6) US3282165A (US20100012521A1-20100121-C00001.png)
BE (1) BE652448A (US20100012521A1-20100121-C00001.png)
CH (5) CH415369A (US20100012521A1-20100121-C00001.png)
DE (3) DE1428764A1 (US20100012521A1-20100121-C00001.png)
ES (1) ES304085A1 (US20100012521A1-20100121-C00001.png)
GB (5) GB1055239A (US20100012521A1-20100121-C00001.png)
IL (5) IL22001A (US20100012521A1-20100121-C00001.png)
LU (1) LU44465A1 (US20100012521A1-20100121-C00001.png)
NL (6) NL6410104A (US20100012521A1-20100121-C00001.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343457A (en) * 1964-12-19 1967-09-26 Rheinmetall Gmbh Housing structure for an automatic firearm
US20050235817A1 (en) * 2002-09-04 2005-10-27 Johannes Murello Firearms with gas pressure loading mechanisms
US8807010B2 (en) 2011-08-24 2014-08-19 Merkel Jagd-und Sportwaffen GmbH Pistol with barrel locking device

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318191A (en) * 1965-07-09 1967-05-09 Frederick P Reed Machine gun with a mount for reducing the recoil forces applied to the trunnions
US3331282A (en) * 1965-08-10 1967-07-18 Avco Corp Ammunition feeder for automatic launcher for rocket-boosted ammunition
US3386336A (en) * 1966-03-30 1968-06-04 Colt S Inc Convertible machine gun for rightand left-hand cartridge feed and operation
US3366011A (en) * 1966-04-18 1968-01-30 Colt S Inc Buffer assembly having a plurality of inertial masses acting in delayed sequence to oppose bolt rebound
US3370372A (en) * 1966-08-22 1968-02-27 Vern C. Thompson Bolt assembly for firearms
DE7404108U (de) * 1974-02-06 1974-05-02 Anschuetz J Gmbh Wettkampfschußwaffe
US4015512A (en) * 1974-10-29 1977-04-05 Feerick Jay J Gas-operated firearm
EP1241430B1 (de) * 1993-10-08 2004-12-29 Heckler & Koch GmbH Selbstlade-Granatwerfer
FR2720151B1 (fr) * 1994-05-19 1996-07-19 Giat Ind Sa Ensemble pour la fixation amovible du berceau à la culasse d'une arme.
DE69505644T2 (de) * 1995-05-23 1999-03-25 Giat Industries, Versailles Vorrichtung zur Herstellung einer abnehmbaren Verbindung zwischen einem Verschluss und einer Wiege eines Geschützes
DE102004029204A1 (de) * 2004-06-16 2006-01-12 Heckler & Koch Gmbh Handfeuerwaffe
US9404695B2 (en) * 2013-12-17 2016-08-02 Fostech Arms Llc Gas systems for firearms
CN105571386B (zh) * 2015-12-15 2017-04-05 湖北江华机械有限公司 防暴发射器阻弹装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511084A (en) * 1938-01-22 1939-08-14 Ferenc Gebauer Improvements in or relating to gas-operated firearms

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US830048A (en) * 1905-11-29 1906-09-04 Emil Boosted Repeating shotgun.
US2868083A (en) * 1955-09-21 1959-01-13 Robert F Windstrup Prefabricated gun receiver
CH366474A (de) * 1958-08-15 1962-12-31 Furter Albert Verfahren zum Befestigen einer aus Lauf und Verschlussgehäuse bestehenden baulichen Einheit eines Karabiners an dessen Schaft
US2960917A (en) * 1959-01-22 1960-11-22 Albert J Lizza Lock means for telescopic firearm bolts
NL279182A (US20100012521A1-20100121-C00001.png) * 1961-06-02 1900-01-01
DE1172993B (de) * 1961-11-25 1964-06-25 Gustav Genschow & Co G M B H Rueckstossverstaerker fuer einen Manoeverlauf

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB511084A (en) * 1938-01-22 1939-08-14 Ferenc Gebauer Improvements in or relating to gas-operated firearms

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343457A (en) * 1964-12-19 1967-09-26 Rheinmetall Gmbh Housing structure for an automatic firearm
US20050235817A1 (en) * 2002-09-04 2005-10-27 Johannes Murello Firearms with gas pressure loading mechanisms
US7311032B2 (en) * 2002-09-04 2007-12-25 Heckler & Koch, Gmbh Firearms with gas pressure loading mechanisms
US8807010B2 (en) 2011-08-24 2014-08-19 Merkel Jagd-und Sportwaffen GmbH Pistol with barrel locking device
US9488431B2 (en) 2011-08-24 2016-11-08 Merkel Jagd— & Sportwaffen Gmbh Pistol with barrel locking device

Also Published As

Publication number Publication date
US3282162A (en) 1966-11-01
DE1428765B1 (de) 1970-09-24
IL22002A (en) 1968-06-20
US3242812A (en) 1966-03-29
NL6410645A (US20100012521A1-20100121-C00001.png) 1965-03-22
BE652448A (US20100012521A1-20100121-C00001.png) 1964-12-16
NL6410641A (US20100012521A1-20100121-C00001.png) 1965-03-22
CH415370A (fr) 1966-06-15
LU44465A1 (US20100012521A1-20100121-C00001.png) 1965-03-19
IL21998A (en) 1968-06-20
ES304085A1 (es) 1965-02-01
NL6410644A (US20100012521A1-20100121-C00001.png) 1965-03-22
NL6410642A (US20100012521A1-20100121-C00001.png) 1965-03-22
DE1428764A1 (de) 1969-09-25
US3282165A (en) 1966-11-01
GB1055240A (en) 1967-01-18
US3277786A (en) 1966-10-11
US3253513A (en) 1966-05-31
CH415368A (fr) 1966-06-15
NL6410643A (US20100012521A1-20100121-C00001.png) 1965-03-22
IL22001A (en) 1968-06-20
CH415371A (fr) 1966-06-15
GB1055237A (en) 1967-01-18
CH415367A (fr) 1966-06-15
NL6410104A (US20100012521A1-20100121-C00001.png) 1965-03-22
GB1055239A (en) 1967-01-18
DE1294855B (de) 1969-05-08
IL21997A (en) 1968-06-20
GB1055236A (en) 1967-01-18
IL21999A (en) 1968-06-20
CH415369A (fr) 1966-06-15
GB1055238A (en) 1967-01-18

Similar Documents

Publication Publication Date Title
US3282166A (en) Gas operated automatic gun
US3318192A (en) Locked action rifle for automatic and semi-automatic selective firing
US3724325A (en) Rate reducer
US2146185A (en) Automatic firearm
US2336146A (en) Firearm
US3090148A (en) Bolt action firearm with charger
US3507187A (en) Breech mechanism
US3780618A (en) Automatic hand gun
US3198075A (en) Automatic firearm with a recoiling barrel
US3656400A (en) Automatic gun breech mechanism having latches to hold the breech block open
US2756640A (en) Breech block locking means
US990475A (en) Automatic pistol.
US3633302A (en) Cylinder mechanism for revolver-type firearms
US1525065A (en) Automatic firearm
US3680433A (en) Semi-automatic shotgun having rotary and sliding breech block
US3538810A (en) Barrel attachment for a firearm
US3026777A (en) Automatic firing mechanism
US3410175A (en) Recoil assembly for firearm
US2894346A (en) Firing mechanism with a single spring for the hammer, hammer catch means and trigger
US1401552A (en) Firearm
US3045556A (en) Gas operated automatic revolver
US3287842A (en) Knockdown repeating lever action rifle
US2115526A (en) Automatic firearm
US3234850A (en) Breech mechanisms for automatic firearms having a recoiling tube
US2434972A (en) Recoil operated device for opening and closing a breechblock mechanism