|Publication number||US3323246 A|
|Publication date||Jun 6, 1967|
|Filing date||Oct 26, 1965|
|Priority date||Oct 29, 1964|
|Publication number||US 3323246 A, US 3323246A, US-A-3323246, US3323246 A, US3323246A|
|Original Assignee||Rheinmetall Gmbh|
|Export Citation||BiBTeX, EndNote, RefMan|
|Non-Patent Citations (1), Referenced by (54), Classifications (11)|
|External Links: USPTO, USPTO Assignment, Espacenet|
.lune 6, 1967 T. LFFLER 3,323,245
' AUTOMATIC FIREARM ASSEMBLY Filed Oct. 26, 1965 2 Sheets-Sheet l 2 Sheets-Sheet 2 Filed Oct. 26, 1965 United States Patent 3,323,246 AUTOMATIC FIREARM ASSEMBLY Theodor Liiler, Mulllieim, Baden, Germany, assignor to Rheinmetall GmbH, Dusseldorf', Germany, a German company Filed (ict. 26, 1965, Ser. No. 505,269 Claims priority, application Germany, Oct. 29, 1964, R 39,129 1f) Claims. (Cl. 42-75) ABSTRACT 01T THE DISCLOSURE A system of semiautomatic and automatic firearms are assembled from a plurality of basic structural units adaptable to more than one assembly configuration.
This invention relates to automatic firearms and, more particularly, to such firearms including a plurality of structural units including a casing, a stock adapted to be removed from the casing, and a connecting element such as a trigger box detachable from the casing and stock and equipped with a grip.
lt is an object of this invention to provide automatic firearms which can be assembled from a plurality of structural units and which are of simple and economical manufacture, of comparatively low weight and which can be assembled without complicated production equipment. An additional object of this invention is to render possible simple and rapid assembly and repair, -as for example, of damaged or worn-out structural units, especially under emergency conditions, if required.
According to the present invention, the basic body of an automatic firearm consists of a total of four stmctural units, namely a barrel with a locking piece, a casing proper, a stock, and a connecting element. The barrel and locking piece, casing and stock units are connected to one another by means of tie rods, with the connecting element being used as an additional connecting element for the other three structural units.
In order to reduce the cost of construction and save weight, the tie rods can also be used, with advantage, as guide elements, for example, for the breech mechanism of the firearm.
In accordance with a subsidiary feature of this invention, a considerable saving in Weight is obtained when the casing consists of a shell part of light construction, such as of light metals, reinforced plastics or the like, with the structural elements which are actually load-bearing or stressed, such as, for example, guides for breech mechanism members, distance rings for the tie rods or the like, secured in the shell part as by casting or by being moldedin during injection molding of the shell part.
According to another subsidiary feature of the invention, and in order to obtain a connection of the aboveenumerated structural units which is free from play, a resilient element, for example a bent or corrugated plate spring acting in the axial direction, is arranged between the stock and the casing. This plate spring preferably has its external contours adapted to the connection crosssection of the casing and/or of the stock. To simplify assembly as a whole, the resilient element may also be of annular form and be located in the region of the tie rods with guides open on one side. The resilient element also serves to compensate for shrinkage occurring on the injection molding or drawing of the plastics shell for the casing, etc.
In order to accommodate modification of the firearm to a somewhat different function, the connecting element may be either of two mechanisms. More particularly, that 3,323,246 Patented June 6, 1967 ICC element may be a magazine box and handgrip or may be a belt feed mechanism. The latter mechanism, which is suitably designed for this purpose, is installed after rotation of the barrel with locking piece and casing through about the longitudinal axis of the firearm, i.e. into an inverted position, when it is desired to use the firearm as a machine gun for belted ammunition.
Some of the objects and advantages of the invention having been stated, others will appear as the description proceeds when taken in connection with the accompanying drawings, in which- FIGURE 1 is an exploded perspective view of a firearm comprising four structural units, in accordance with this invention;
FIGURE 2 is a perspective View of a modified form of the firearm of FIGURE 1;
FIGURE 3 is a perspective view partly in section of a portion of the firearm of FIGURE 1;
FIGURE 4 is a view similar to FIGURE 1, of a modified form of firearm in accordance with this invention;
FIGURE 5 shows a detail of a belt feed associated with a firearm of this invention; and
FIGURE 6 shows a modified form of a grip with a trigger box.
Referring now more particularly to the drawings, a firearm is shown in FIGURE 1 which has a barrel 1 with a chamber 2. Secured to the barrel is a locking piece 3 for the breech mechanism, and a hand guard 4. Two tie rods 5, 6 are screwed to the locking piece 3, are preferably tubular for reasons of light construction, and are provided with annular grooves 7 and 8, respectively, at their ends. The firearm also includes a casing proper 9 and a stock 10.
Assembly of the above-mentioned structural elements is effected by the casing 9 being positioned encircling and being pushed along the tie rods 5, 6 in the direction of the parts 1 to 4, i.e. on to the barrel and locking piece group, by means of corresponding guide grooves 5 in the casing. Tight clamping of these two structural units is effected at the end of this operation by means of a retaining bolt 11 which has locking recesses 12, 13 for engaging annular grooves 7 and 8, respectively, in the tie rods. Prior to such insertion, a corrugated or bent plate spring 14 which is provided with guides 15' open on one side and encircling the tie rods 5, 6 is also pushed on. Thereafter, a groove or notch (not shown) in the region of the upper front end of the stock 10, facing the casing, is placed over a hook-shaped extension 1S of the retaining bolt 11 to hold the stock in position.
The fourth structural unit or connecting element, preferably consisting of a trigger box 16 with a grip 17 and which forms a single unit with a magazine shaft indicated at 18 when the firearm is to be assembled as an assault rifle, can then be used as an additional connecting element for the other three structural units. To this end, the parts are connected to one another by means of pins inserted into holes 19 to 22. The bent or corrugated plate spring 14, which can be stressed wtihout difficulty by the lever effect connection of the stock, insures play-free connection of the individual structural groups with one another. Likewise, differences in the longitudinal direction are compensated by the spring 14,
Instead of the two tie rods shown in FIGURE 1, it is Within the scope of this invention to employ several tie rods, for instance four, as illustrated in FIGURES 2 and 3. In order to secure exact fixing of the tie rods in the casing, distance rings 23 may be provided, these being fixed to the casing for example by being injection-molded integrally with the shell of the casing. It is also possible to provide special guides for the breech mechanism or For reasons of weight saving, the casing 9 is preferably formed by a light weight type of construction (for exf ample with a honeycomb structure) or from profiled tubing, using light ymaterials such as light metals, plastics reinforced with glass iiber or plastic reinforced in another Way. The structural elements which are actually load-bearing or stressed, such as the guides for breech mechanism elements, distance rings forthe tie rods and other supports, etc., are bedded in the casing as by being cast or injection molded integrally therewith.
FIGURE 2 shows a modified form of the locking piece and barrel structural unit` wherein the chamber 2' is not a component part of the barrel 1, as is customary,- buty instead is a component partof the locking piece 3. rl`he barrel 1', locking piece chamber 3 and chamber 2' are connected in this construction by Ameans of a coupling nut 26. This arrangementpermits interchange of only that part ofthe barrel which is simpler to produce and subjected to the greatest wear, namely the inner or rifled tube. Furthermore, this arrangement is also advantageous because the chamber can now be hardened together with the locking piece.
The line of division between the barrel 1 and the chamber 2 is advantageously located in the zone of free iiight of the bullet, i.e. about 1 to 2 mm. in front of the socalled cartridge mouth. This line of division may also be f used with advantage for the tapping off of gas for operating the breech mechanism.
The grip 17 in the lower part of FIGURE 1 is preferf ably a stamped sheet-metal part. The trigger system is units assembled in a modied form of itearm after having been turned through 186 about the longitudinal axis of the barrel. Thus, the firearm may now be regarded as being in an inverted position. However, the `connecting element assembling the barrel and locking piece and the casing is now no longer a magazine box and handgrip as in FIGURE 1, but is a belt feed mechanism 27; so that with the same basic components the firearm is now suit- -able for use as a machine gun instead of as an assault rie as in FIGURE 1. FIGURE 6 illustrates another design of a trigger box 2S with grip 29, connection to the casing 9 being effected, first, by means of a tongue and Cil groove joint 29', 3i) and, second, by means of an insertion joint 31, 32.
In the drawings and specification there has been set forth a preferred rembodiment of the invention` and, although speciiic terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, they scope of the invention being deiined in the claims:
What is claimed is:
1. An automatic firearm `assembly including a barrel with a locking piece, a casing7 a stock, and a connecting element `and comprising means secured to said locking piece and extending through said casing for securing said barrel, said casing and said stock together, and means on said connecting element for securing the same to said locking piece and to said casing and stock.
2. An assembly las claimed in claim'l wherein said means secured to said locking piece is a plurality of tie rods.
3. An assembly as claimed in claim 2 wherein said tie rods are tubular and define a means for guiding a breech mechanism for thefirearm.
4. Anassernbly as claimed in claim 2 wherein the free ends of said tie rods have means for receiving a retaining bolt for maintaining said` casing assembled With-said bar-` rel and locking piece.
5. An assembly as claimed in claim 1 further comprising resilient means interposed between. said casing and said stock for providing a biasing force axially of the assembly.
' 6. Any assembly as -claimed in .claim 5 wherein said resilient means is a substantially planar spring member having an outside contour approximating that of said casing and said stock at their point ofjuncture.`
'7. An assembly as .claimed in claim 6 whereinl said spring member is annular and encircles said means secured to said locking piece. 1
8. An assembly as. claimed iny claim 1. wherein said locking piece includes a projectile shell case receiving chamber and is separable fromsaid barrel.
9. An assembly as claimed in claim 1 wherein said connecting element is a magazine box and handgrip and is adapted to contain a trigger assembly.
10. An assembly as claimed in claim 1 wherein said connecting element is a belt feed mechanism.
No references cited.
SAMUEL W. ENGLE, Primary Examiner.
BENJAMIN A. BORCHELT, Examiner.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3386336 *||Mar 30, 1966||Jun 4, 1968||Colt S Inc||Convertible machine gun for rightand left-hand cartridge feed and operation|
|US3512290 *||Jul 8, 1968||May 19, 1970||High Standard Mfg Corp The||Firearm housing assembly having three sections and an interlocking central coupling member therefor|
|US3696706 *||Sep 17, 1969||Oct 10, 1972||Heckler & Koch Gmbh||Self-loading pistol having forwardly extending breech slide|
|US3731417 *||May 12, 1971||May 8, 1973||Heckler & Koch Gmbh||Firearms|
|US3939589 *||May 17, 1974||Feb 24, 1976||Tellie Paul E||Firearms with forestock|
|US4663876 *||Jan 28, 1985||May 12, 1987||Reaume Robert N||Stock assembly kit and rifle embodying the same|
|US5173564 *||Jan 7, 1992||Dec 22, 1992||Hammond Jr Claude R||Quick detachable stock system and method|
|US6314672 *||May 27, 1998||Nov 13, 2001||Heckler & Koch Gmbh||Housing for a firearm|
|US6318014 *||Dec 30, 1999||Nov 20, 2001||Richard R. Porter||Handgun adapter|
|US6374528 *||Feb 23, 2000||Apr 23, 2002||Michael Aaron Davis||Stock and kit for accommodating mounting on a plurality of different firearms|
|US6637141 *||Apr 16, 2002||Oct 28, 2003||Donald Weatherby||Gun stock|
|US6662485 *||Jan 31, 2002||Dec 16, 2003||Ira Kay||Firearm interface for a buttstock and pistol grip|
|US6722072 *||May 21, 2002||Apr 20, 2004||Mccormick Michael L.||Trigger group module for firearms and method for installing a trigger group in a firearm|
|US7082709 *||Jul 3, 2001||Aug 1, 2006||Lindsey Forrest R||Weapon sling and attachments|
|US7131228 *||Jun 16, 2005||Nov 7, 2006||Colt Defense Llc||Modular firearm|
|US7162824||Mar 22, 2004||Jan 16, 2007||Mccormick Michael L||Modular trigger group for firearms and trigger group installation method|
|US7293385||Jan 9, 2007||Nov 13, 2007||Mccormick Michael L||Modular trigger group for firearms and firearm having a modular trigger group|
|US7631877||Jan 26, 2006||Dec 15, 2009||Battenfeld Technologies, Inc.||Firearm targets and methods for manufacturing firearm targets|
|US7681886||Feb 26, 2007||Mar 23, 2010||Battenfeld Technologies, Inc.||Shooting gallery devices and methods|
|US7726478||Feb 26, 2007||Jun 1, 2010||Battenfeld Technologies, Inc.||Containers for carrying firearm accessories and/or supporting firearms|
|US7748154 *||Jul 8, 2008||Jul 6, 2010||Benelli Armi, S.P.A.||Quick coupling particularly for the stock of a portable weapon|
|US7774972||Sep 11, 2007||Aug 17, 2010||Battenfeld Technologies, Inc.||Modular shooting rests and shooting rest assemblies|
|US7779572||May 8, 2007||Aug 24, 2010||Battenfeld Technologies, Inc.||Bipod device for use with a firearm|
|US7823317||Aug 22, 2007||Nov 2, 2010||Battenfeld Technologies, Inc.||Adjustable shooting rests and shooting rest assemblies|
|US7845267||Sep 11, 2008||Dec 7, 2010||Battenfield Technologies, Inc.||Attachment mechanisms for coupling firearms to supporting structures|
|US7946071||Jun 1, 2009||May 24, 2011||Battenfeld Technologies, Inc.||Firearm vise|
|US7954272||May 8, 2008||Jun 7, 2011||Battenfeld Technologies, Inc.||Adjustable firearm supports and associated methods of use and manufacture|
|US7997021||Nov 21, 2008||Aug 16, 2011||Battenfeld Technologies||Shooting rests with adjustable height assemblies|
|US8011129||Jun 10, 2004||Sep 6, 2011||Battenfeld Technologies, Inc.||Recoil-reducing shooting rest|
|US8104212||Feb 26, 2007||Jan 31, 2012||Battenfeld Technologies, Inc.||Firearm supports, such as shooting bags, and firearm support assemblies|
|US8132351||Sep 29, 2010||Mar 13, 2012||Battenfeld Technologies, Inc.||Adjustable shooting rests and shooting rest assemblies|
|US8296988||Nov 30, 2006||Oct 30, 2012||Battenfeld Technologies, Inc.||Firearm supporting devices, methods of assembling firearm supporting devices, and methods of packaging firearm supporting devices|
|US8316570||Aug 2, 2010||Nov 27, 2012||Battenfeld Technologies, Inc.||Bipod device for use with a firearm|
|US8336708||Jul 21, 2008||Dec 25, 2012||Battenfeld Technologies, Inc.||System and container for organizing and carrying tools and tool sets|
|US8356442||Mar 13, 2012||Jan 22, 2013||Battenfeld Technologies, Inc.||Adjustable shooting rests and shooting rest assemblies|
|US8371057||May 9, 2007||Feb 12, 2013||Battenfeld Technologies, Inc.||Firearm cleaning apparatus with protective coating|
|US8393106||Mar 12, 2013||Battenfeld Technologies, Inc.||Shooting rests with adjustable height for supporting firearms|
|US8464628||Oct 29, 2010||Jun 18, 2013||Battenfeld Technologies, Inc.||Attachment mechanisms for coupling firearms to supporting structures|
|US8621773||May 10, 2006||Jan 7, 2014||Battenfeld Technologies, Inc.||Shooting rests for supporting firearms|
|US8640372||Nov 8, 2011||Feb 4, 2014||Colt Defense, Llc||Automatic or semi-automatic rifle|
|US8656622 *||Oct 14, 2008||Feb 25, 2014||Ashbury International Group, Inc.||Tactical firearm systems and methods of manufacturing same|
|US8695985||Jan 7, 2011||Apr 15, 2014||Battenfeld Technologies, Inc.||Stowable shooting target assemblies|
|US8931201||Dec 20, 2013||Jan 13, 2015||Battenfeld Technologies, Inc.||Gun support apparatus|
|US9151561||Jan 3, 2014||Oct 6, 2015||Battenfeld Technologies, Inc.||Shooting rests for supporting firearms|
|US20050000141 *||Jun 10, 2004||Jan 6, 2005||Battenfeld Technologies, Inc.||Recoil-reducing shooting rest|
|US20060026883 *||Jun 16, 2005||Feb 9, 2006||Paul Hochstrate||Modular firearm|
|US20070074439 *||Jun 10, 2004||Apr 5, 2007||Battenfeld Technologies, Inc.||Recoil-reducing shooting rest|
|US20070151138 *||Jan 9, 2007||Jul 5, 2007||Mccormick Michael L||Modular trigger group for firearms and firearm having a modular trigger group|
|US20080060245 *||Nov 8, 2007||Mar 13, 2008||Mccormick Michael L||Modular trigger group for firearms and firearm having a modular trigger group|
|US20090019757 *||Jul 8, 2008||Jan 22, 2009||Benelli Armi S.P.A.||Quick coupling particularly for the stock of a portable weapon|
|USD676095||Sep 8, 2011||Feb 12, 2013||Ashbury International Group, Inc.||Monolithic rail with integral receiver height adapter|
|USD705885||Sep 25, 2012||May 27, 2014||Ashbury International Group, Inc.||Monolithic rail with integral receiver height adapter|
|USD728722||Apr 29, 2013||May 5, 2015||Ashbury International Group, Inc.||Forend for modular tactical firearms|
|USD728723||Apr 29, 2013||May 5, 2015||Ashbury International Group, Inc.||Forend for modular tactical firearms|
|U.S. Classification||42/75.1, 192/13.00A, 42/75.2, 42/75.3, 89/199|
|International Classification||F41A11/02, F41A11/00|
|Cooperative Classification||F41A11/02, F41A11/00|
|European Classification||F41A11/00, F41A11/02|