US3890881A - Automatic firing weapon - Google Patents

Automatic firing weapon Download PDF

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Publication number
US3890881A
US3890881A US390953A US39095373A US3890881A US 3890881 A US3890881 A US 3890881A US 390953 A US390953 A US 390953A US 39095373 A US39095373 A US 39095373A US 3890881 A US3890881 A US 3890881A
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US
United States
Prior art keywords
breechblock
housing
weapon
safety lever
lever
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
US390953A
Other languages
English (en)
Inventor
Ernst Hurlemann
Jurg Zellweger
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US3890881A publication Critical patent/US3890881A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/70—Anti-rebound arrangements, i.e. preventing rebound of the bolt out of the firing position

Definitions

  • the present invention relates to a new and improved construction of an automatic firing weapon of the type incorporating a housing and a breechblock portion which is displaceable in the housing, a safety lever pivotably mounted in the housing, the safety lever in cooperative action with a stop at the breechblock portion preventing recoil motion or movement of the breechblock portion, there also being provided a fire-moved component which acts by means of a control surface upon the safety lever for the purpose of rocking the safety lever into a position which releases the breechblock portion after firing a shot.
  • the safety lever is actuated by a gas piston acting upon the breechblock.
  • the gas piston is constructed as a plunger with a control surface. Since the breechblock is simultaneously unlocked by the plunger and driven into the hooked position, it is not possible to throttle the removal of the gas in a manner as would be necessary for a protective actuation of the safety lever by the plunger.
  • the hard impacts which act upon the safety lever represent a possible rupture danger for such safety lever and therefore impair the operational reliability of the weapon.
  • Another and more specific object of the present invention aims at the provision of a new and improved construction of automatic firing weapon in which the actuation of the safety lever occurs at reduced load.
  • the firing weapon possesses a weapon barrel which is movable relative to the aforementioned housing, and the control surface is arranged at the weapon barrel and the safety lever possesses a control cam or projection which slides upon the control surface.
  • FIG. 1 illustrates an automatic firing weapon, partially in longitudinal sectional view and partially in front view, and portraying the breechblock locked in its firing position;
  • FIG. 2 is a cross sectional view of the firing weapon depicted in FIG. 1, taken substantially along the line II-II thereof;
  • FIG. 3 is a view, similar to the showing of FIG. 2, but showing the breechblock in its unlocked position;
  • FIG. 4 is a cross-sectional view of the firing weapon depicted in FIG. 1, taken substantially along the line IV--IV thereof;
  • FIG. 5 is a cross-sectional view of the firing weapon depicted in FIG. 4, taken substantially along the line VV thereof;
  • FIG. 6 is a cross-sectional view of the firing weapon depicted in FIG. 4, taken substantially along the line VI-Vl thereof;
  • FIG. 7 is a cross-sectional view of the firing weapon depicted in FIG. 4, taken substantially along the line VII-VII thereof.
  • a weapon housing generally designated by reference character 1 in FIG. 1 is secured in any suitable and therefore not particularly illustrated manner with the cradle or rocker of a gun mount.
  • a barrel or tube 2 is displaceably mounted in a sleeve-shaped component or part 3 of the housing 1.
  • the barrel or tube 2 is resiliently supported against the gun mount.
  • a sleeve 4 connected with the barrel 2 possesses an inwardly directed flange ring 5 which is spaced from the rear end surface 6 of the barrel 2 and the end surfaces or end faces 7, 8 of which are disposed perpendicular to the lengthwise extending axis of the barrel 2.
  • breechblock carrier or support 11 is displaceably mounted at the lower portion 1a of the housing 1, this lower housing portion la having a substantially rectangular hollow cross-sectional configuration.
  • the breechblock carrier 11 is subjected to the pressure of a spring 12 or equivalent device which bears against the rear wall 13 of the housing 1.
  • a housing 14 is connected with this rear wall 13 and contains a buffer or shock absorber 15.
  • the head 16 of the breechblock carrier or support 11 possesses a forwardly open bore 17 which extends coaxially with respect to the barrel 2, and in this bore 17 there is rotatably and displaceably mounted a substantially cylindrical breechblock body 18.
  • This breechblock body 18 possesses and outwardly depending flange ring 19, the external diameter of which is smaller than the spacing of the base of each of the grooves 9 of the sleeve 4 from the axis of the barrel 2.
  • the flange ring 19, as best seen by referring to FIGS. 2 and 3, possesses grooves 20 and projections or earns 21 which are present in the same number and width as the grooves 9 and projections 10 of the flange ring 5 of the sleeve 4.
  • the breechblock body 18 possesses a continuous bore 22 which is stepped in diameter and arranged coaxially with respect to the barrel axis.
  • a firing pin 23 is secured at the head 16 of the breechblock carrier or support 11 and extends into the bore 22 of the breechblock body 18.
  • the breechblock body 18 possesses a bore 24 which completely penetrates therethrough and the axis of which is directed perpendicular to its length wise axis and intersects therewith.
  • a bolt 25 is arranged in the bore 24 and the firing pin 23 which penetrates therethrough serves as the axis of rotation and the posi tional securing means for the bolt 25. Both ends of the bolt 25 extend into two slots 26 which are milled or otherwise suitably formed at the wall of the breechblock carrier head 16.
  • the rear portion 27 of the slot 26 is parallel to the axis of the breech-block body 18 and the front portion or part 28 is directed at an inclination to such axis.
  • the center points of both front circular ends of the slot 26 are located at a line which intersects the axis of the breechblock housing 18, this line enclosing an angle with a horizontal plane.
  • a sleeve 29 is secured to the barrel 2.
  • This sleeve 29 possesses an outwardly depending flange edge 30 for which the housing portion 3 serves as the guide. Furthermore, the sleeve 29 possesses a downwardly depending projection or extension 31.
  • a plunger 32 which is substantially parallel to the barrel 2 is connected with the projection 31.
  • a nozzle 33 is mounted in the wall of the barrel 2.
  • a gas escape or removal bore 34 of the nozzle 33, and which bore is directed perpendicular to the axis of the barrel 2 merges with a bore 35 which piercingly extends through the porjection 31 and the plunger 32.
  • a cylinder 36 is secured at a wall 37 of the housing 1 and is retained by a carrier or support 38 connected with the housing 1.
  • a piston 39 is arranged in the cylinder 36 and is loaded by the forwardly acting pressure of a spring 40 or the like.
  • a piston rod 41 is movably mounted in any suitable and therefore not particularly illustrated manner at the rear floor or base of the cylinder 36 and extends towards the rear out of the housing wall 37.
  • the plunger 32 is displaceably mounted at the front floor or base of the cylinder 36.
  • a bore 42 which piercingly extends through the wall of the cylinder 36 opens into the piston compartment or chamber 43.
  • the breechblock carrier or support 11 possesses a bifurcated or fork-shaped foot or base portion 44 having a recess or depression 45 which is milled in or otherwise machined from the end face thereof.
  • An entrainment member 46 is disposed parallel to the axis of the weapon and extends through a slot 47 of the breechblock carrier-foot or base portion 44 towards the front.
  • a transversely directed projection 48 of the entrainment member 46 is located in front of the base 49 of the depression or recess 45.
  • the projection 48 is displaceably mounted at a rod 50 which extends parallel to the axis of the weapon and under the pressure of a spring 51 bears against the housing wall 37.
  • the entrainment member 46 is connected with a chain 52.
  • a projection or dog 53 of the entrainment memberprojection 48 extends into a slot 54 which is cut-in at the region of the depression or recess 45 at the right side of the breechblock carrier base 44 as viewed in the direction of firing.
  • the projection or dog 53 possesses a surface 55 which is directed perpendicular to a horizontal plane, this surface 55 enclosing an acute angle with the forwardly directed lengthwise central plane of the weapon.
  • the breechblock carrier base 44 possesses at the same side and offset in elevation a groove 56 which is parallel to the axis of the weapon, the front vertical boundary surface 57 of which likewise encloses an acute angle with the forwardly directed longitudinal central plane of the weapon, as best seen by referring to FIGS. 1 and 6.
  • This bearing or support piece 58 possesses three recesses 59, 60 and 61, the central planes of which are directed perpendicular to the longitudinal central plane of the weapon.
  • a bushing 63 with a notched-toothed or serrated bore.
  • An axle or shaft 64 is arranged in the bore 62 and keyed with the bushing 63.
  • the hub of a control cam 65 constructed as a lever and arranged at the recess 59 is keyed with the shaft or axle 64.
  • the control cam 65 extends through a slot 66 in the housing 1 and into the latter.
  • a projection or cam 67 is provided at the barrel 2, this cam or projection 67 having a cylindrical surface 68 which is concentric therewith.
  • a safety lever or catch 70 is mounted at the recess 60 of the bearing or support piece 58 and is in driving connection with the shaft or axle 64.
  • a spring 72 arranged in a bore 71 of the bearing piece 58 loads the safety lever 70, so that such bears with its flat or planar surface 73 against the bearing piece 58.
  • the safety lever 70 extends through a slot 74 at the wall of the housing portion 1a into the path of the breechblock carrier or support 11. This slot 74 is in alignment with the recess 60.
  • a coupling element or piece 75 is arranged in the recess 61 of the bearing piece 58, the hub 76 of the coupling element 75 extending into the part of the bore 62 which is located between the recesses 61 and 60 and is in driving connection with the shaft 64.
  • the coupling element 75 possesses a downwardly depending projecting or extension 77 which is equipped with a surface 78 which is radially directed with respect to the bore 62.
  • the recess 61 furthermore contains an unlocking lever 79 which is rotatably mounted at the shaft 64.
  • the hub 80 which protrudes upwardly past the unlocking lever 79 and bears at the hub of the coupling element 75 possesses a surface 81 which is radially directed with respect to the bore 62.
  • the unlocking lever 79 is loaded by a spring 82 which is supported at the bearing piece 58, so that it can be held in bearing contact by means of one surface 83 of its hub against the bearing or support piece 58.
  • the unlocking lever 79 engages through a slot 84 at the housing portion la.
  • a surface 85 at the lever end is parallel to the surface 55 of the entrainment projection or cam 53 and is located at a small spacing behind the same.
  • the ends of the bolt 25 are located at the rear portion 27 of the slot 26 of the head 16, and the rear end of the plunger 32 bears against the piston 39.
  • the end of the control cam 65 is lo cated behind the surface 69 of the barrel 2.
  • the safety lever or catch 70 extends into the groove 56 of the breechblock carrier base 44.
  • the surface 700 of the safety lever 70 is located behind the front boundary 57 of the groove 56 and possesses a spacing therefrom which is smaller than the length of the linear portion 27 of the slot 26 of the breechblock carrier head 16.
  • the surface 78 of the coupling element 75 bears against the surface 81 of the unlocking lever 79.
  • the conical surface 69 of the barrel 2 moves aganist the control cam 65, whereby the same together with the shaft 64 and the safety lever 70 is rotated in the clockwise direction, as viewed in FIGS. 5 to 7.
  • the control cam 65 comes into contact with the cylindrical surface 68 of the barrel 2 then the safety lever 70 has completely departed out of the groove 56 of the breechblock carrier base 44.
  • the breechblock carrier 11 After the breechblock carrier 11 has transferred its energy to the spring 12 it is again moved towards the front after impacting against the buffer 15 by means of the latter, and the breechblock body 18 introduces a new cartridge 86 into the barrel 2 which, after carrying out the return movement limited by a stop or impact surface 88 of the housing 1, again moves back into its rest position.
  • control cam 65 again assumes the position depicted in FIG. 5, and the safety lever extends into the path of the breechblock support or carrier 11.
  • the projections 21 extend through the sleeve grooves 9 and impact against an end surface 89 of the barrel 2.
  • the breechblock carrier 11 again moves further towards the front since it is now again uncoupled from the breechblock body 18, whereby the bolt 25 together with the breechblock body 18 is rotated back in the counterclockwise direction, as viewed in FIG. 3, until the symmetry planes of the projections 21 and 10 of the breechblock body 18 and the sleeve 4 coincide and thus the breechblock body 18 is again locked with the barrel 2.
  • the safety lever 70 is rocked out of the path of the breechblock carrier 11 which moves towards the forwardmost position, then is driven under the action of the spring 72 in the counter-clockwise direction (FIG. 6) and moved into the groove 56 of the breechblock carrier base 44.
  • the coupling element 75 is entrainably rocked by the unlocking lever 79, whereby the shaft 64 is rotated and by means of such the safety lever 70 is brought out of engagement with the groove 56 of the breechblock carrier 1 l.
  • the breechblock carrier 11 therefore can be moved towards the rear by the entrainment member 46 which bears against its base 44.
  • the breechblock carrier 11 initially carries out a relative movement with respect to the breechblock body 18, whereby such is unlocked from the barre] 2 and subsequently there conjointly occurs the rearward movement of the breechblock carrier 11 and breechblock body 18.
  • An automatic firing weapon comprising a housing, a weapon barrel movable relative to said housing, a breechblock mechanism including a breechblock displaceably mounted in said housing, a pivotable shaft, a safety lever pivotably mounted in the housing on said pivotable shaft, said breechblock having a stop, the safety lever in cooperative action with the stop at the breechblock preventing recoil movement of the breechblock, a control cam pivotally mounted in said housing on said pivotable shaft, the control cam and said safety lever being connected with said pivotable shaft, an unlocking lever mounted on said pivotable shaft, means for placing said unlocking lever in driving connection with said pivotable shaft and means associated with said breechblock for manually actuating said unlocking lever, said barrel acting by means of a control surface thereon upon the control cam sliding-upon said control surface for displacing the safety lever into a position releasing the breechblock after firing a shot.
  • An automatic firing weapon comprising a housing, a breechblock mechanism including a breechblock component displaceably mounted in said housing, a safety lever pivotably mounted in the housing, said breechblock component having a stop, the safety lever in cooperative action with the stop at the breechblock component preventing recoil movement of the breechblock component, a fire-moved component acting by means of a control surface upon the safety lever for displacing the safety lever into a position releasing the breechblock component after firing a shot, the improvement comprising the firing weapon possessing a weapon barrel defining the fire-moved component and movable relative to said housing, the control surface being arranged at the weapon barrel, the safety lever being provided with a control cam which slides upon the control surface, a common shaft upon which there are seated the control cam and said safety lever, the control cam and safetylever being connected with said common shaft, an unlocking lever, a one-way coupling means for placing into driving connection said unlocking lever with said common shaft, said unlocking lever being
  • said breechblock mechanism includes a breechblock carrier, said body being arranged in a recess provided at an end face of the breechblock carrier and bearing under the pressure of a spring against a wall of the weapon housing.
  • said one-way coupling comprises a coupling element keyed with said shaft, and wherein said unlocking lever and said coupling element possess mutually contacting entrainment surfaces.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Automotive Seat Belt Assembly (AREA)
US390953A 1972-08-31 1973-08-23 Automatic firing weapon Expired - Lifetime US3890881A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1288972A CH556011A (de) 1972-08-31 1972-08-31 Selbsttaetige feuerwaffe.

Publications (1)

Publication Number Publication Date
US3890881A true US3890881A (en) 1975-06-24

Family

ID=4387330

Family Applications (1)

Application Number Title Priority Date Filing Date
US390953A Expired - Lifetime US3890881A (en) 1972-08-31 1973-08-23 Automatic firing weapon

Country Status (8)

Country Link
US (1) US3890881A (OSRAM)
JP (1) JPS5416680B2 (OSRAM)
CH (1) CH556011A (OSRAM)
DE (1) DE2365902C3 (OSRAM)
FR (1) FR2198114B1 (OSRAM)
IT (1) IT993829B (OSRAM)
NL (1) NL163017C (OSRAM)
SE (1) SE387433B (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960053A (en) * 1974-09-20 1976-06-01 Maremont Corporation Automatic firearm having anti-bounce sear
US4381694A (en) * 1980-03-11 1983-05-03 Rheinmetall Gmbh Recoil block or brake for a linear breech mechanism in an automatic fire arm
US4635530A (en) * 1982-11-30 1987-01-13 Heckler & Koch Gmbh Automatic hand firearm with rigidly locked breech for ammunition with extremely high projectile momentum
US20100031812A1 (en) * 2008-08-11 2010-02-11 Renaud Kerbrat Delayed blowback firearms with novel mechanisms for control of recoil and muzzle climb

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230828A (en) * 1962-12-21 1966-01-25 Bervets Aero Mecaniques S A Belt feed mechanisms for automatic firearms
US3566744A (en) * 1965-09-29 1971-03-02 Stoner Eugene Automatic gun receiver combination
US3713363A (en) * 1969-12-19 1973-01-30 Oerlikon Buehrle Ag Automatic firearm

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230828A (en) * 1962-12-21 1966-01-25 Bervets Aero Mecaniques S A Belt feed mechanisms for automatic firearms
US3566744A (en) * 1965-09-29 1971-03-02 Stoner Eugene Automatic gun receiver combination
US3713363A (en) * 1969-12-19 1973-01-30 Oerlikon Buehrle Ag Automatic firearm

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3960053A (en) * 1974-09-20 1976-06-01 Maremont Corporation Automatic firearm having anti-bounce sear
US4381694A (en) * 1980-03-11 1983-05-03 Rheinmetall Gmbh Recoil block or brake for a linear breech mechanism in an automatic fire arm
US4635530A (en) * 1982-11-30 1987-01-13 Heckler & Koch Gmbh Automatic hand firearm with rigidly locked breech for ammunition with extremely high projectile momentum
US20100031812A1 (en) * 2008-08-11 2010-02-11 Renaud Kerbrat Delayed blowback firearms with novel mechanisms for control of recoil and muzzle climb
CN102245997A (zh) * 2008-10-09 2011-11-16 克里斯系统股份公司 具有用于控制反冲和枪口上跳的新型机构的延迟反冲枪械
US8281704B2 (en) * 2008-10-09 2012-10-09 Kriss Systems Sa Delayed blowback firearms with novel mechanisms for control of recoil and muzzle climb
US8783158B2 (en) * 2008-10-09 2014-07-22 Kriss Systems Sa Delayed blowback firearms with novel mechanisms for control of recoil and muzzle climb
CN102245997B (zh) * 2008-10-09 2015-04-01 克里斯系统股份公司 具有用于控制反冲和枪口上跳的新型机构的延迟反冲枪械

Also Published As

Publication number Publication date
FR2198114B1 (OSRAM) 1977-05-13
NL7310925A (OSRAM) 1974-03-04
IT993829B (it) 1975-09-30
FR2198114A1 (OSRAM) 1974-03-29
JPS4967497A (OSRAM) 1974-06-29
DE2365902B2 (de) 1978-02-16
NL163017B (nl) 1980-02-15
DE2339270B2 (de) 1977-03-10
DE2365902C3 (de) 1978-10-12
CH556011A (de) 1974-11-15
DE2365902A1 (de) 1977-01-27
SE387433B (sv) 1976-09-06
DE2339270A1 (de) 1974-03-21
JPS5416680B2 (OSRAM) 1979-06-23
NL163017C (nl) 1980-07-15

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