US2948195A - Breech mechanism for automatic firearms - Google Patents
Breech mechanism for automatic firearms Download PDFInfo
- Publication number
- US2948195A US2948195A US712813A US71281358A US2948195A US 2948195 A US2948195 A US 2948195A US 712813 A US712813 A US 712813A US 71281358 A US71281358 A US 71281358A US 2948195 A US2948195 A US 2948195A
- Authority
- US
- United States
- Prior art keywords
- breech
- abutment
- head
- faces
- cartridge
- 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
Links
- 230000007246 mechanism Effects 0.000 title description 12
- 230000037452 priming Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 2
- 238000009527 percussion Methods 0.000 description 2
- NIOPZPCMRQGZCE-WEVVVXLNSA-N 2,4-dinitro-6-(octan-2-yl)phenyl (E)-but-2-enoate Chemical compound CCCCCCC(C)C1=CC([N+]([O-])=O)=CC([N+]([O-])=O)=C1OC(=O)\C=C\C NIOPZPCMRQGZCE-WEVVVXLNSA-N 0.000 description 1
- DIWRORZWFLOCLC-UHFFFAOYSA-N Lorazepam Chemical compound C12=CC(Cl)=CC=C2NC(=O)C(O)N=C1C1=CC=CC=C1Cl DIWRORZWFLOCLC-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- 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
- F41A3/44—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having sliding locking elements, e.g. balls, rollers
- F41A3/46—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having sliding locking elements, e.g. balls, rollers 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
- F41A3/12—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
Definitions
- the present invention relates to a breech mechanism for automatic firearms, and has theprimary objects of providing a breech mechanism inV which the inertia mass is divided into two parts, the rear part of which is accelerated at a higher rate than the forward part, resulting in a smaller total inertia mass than in pure breech mass locked breech mechanisms and dispensing with a gas drive therefor, and at the the same time providing a safe abutment for the bottom of the cartridge when fired.
- a breech mechanism for automatic fire arms comprising in combination: a barrel, a breech head takingrthe thrust of the bottom of the cartridge fired, a rear breech portion, locking means therefor, said rear portion being slidable longitudinally and-the said locking means being moveable transversely of the axis of the said barrel, and a locking tongue extending axially from the said rear portion towards said breech he'ad and engaging with play said locking means, said breech headbearing through said locking means on roof-like -inclined faces stationary relative said barrel and on inclined faces directed transversely thereof on said rear portion, whereby said breech ⁇ head when recoiling accelerates said rearportionjat anl increased rat-io, said locking means after initial transverse movement owing to backsliding of the said breech head, is locked during part of the rearward movement of the said rear portion and thereby in turn interlocks the said breech head rigidly with the said barrel.
- a breech mechanism according to the invention is not affected by the inavoidable fluctuations in the pressure rise within the cartridge in the course of time after priming. It is also safeguarded against rebound phenomena occurring in the breech which in known breech mechanisms did not provide with certainity that the components of the breech are at the moment of the shot development at a completely closed position and at rest. This danger may be countered by reboundpreventing means, which however in their known embodiments are only rebound-damping or rebound-delaying devices by which the element of danger set forth hereinabove is only reduced but not completely eliminated.
- lFig. 1 Iis a vertical section of a breech according to the invention.
- Fig. 2 is a horizontal section of a first embodiment of the breech locked by means of abutment aps, in the priming position,
- Fig. 3 shows the breech according to Fig. 2 in the portion 4 of the breechfforces the breech as a wholeinto the priming position shown in Figs. 1 and 2.
- an extractor l3 is fixed and in the locking tongue 9 of Ithe rear portion 4 of the breech a percussion pin 5 is pivoted by means of a pin 14, said percussion pin reaching through a bore 15 of the breech head 2.
- the rear portion 4 of the breech transmits the pressure through the face 4d on to the breech head 2, which ⁇ in the priming position abuts in turn the faces 10b of the casing 10.
- the breech head 2 bears through two abutment flaps 8 on inclined faces 10a of the casing 10. These abutment flaps 8 are forced by the inclined faces-4a of the rear portion 4 of the breech into a swung-out position (conf. Fig. 2).
- a cartridge casing 11 inserted into the barrel 1 bears on the face 2a of the breech head.
- the scar 7 serves in the usual manner for retaining the breech in the cocked' position in that it abuts the inclined face 4e of the rear the usual manner, whereafter the cartridge casing forces the breech head 2 rearward.
- the breech head is .thereby/:positively locked.
- the rear portion 4 of the breech continues its movement owing to its inherent kineticY energy, ⁇ until the support of the abutment aps by the two parallel faces 4b of the locking tongue 9 at lits forward end is abolished andthe abutment aps 8 under the inuence of the thrust Vof the red cartridge swing further inwardly, wherebyy the positive lock-ing of the breech ,head ⁇ is abolished.
- the breech components then assume the unlocked position of Fig. 4.
- the rear portion 4 of the breech, bythe abutmentface 4c then carries along also the breech head, the return movement of the rear portion of the breech and of the breech head in unisonbeing eectivelfy assisted by the remainder ofthe gases in the barrel.
- the spent cartridge case is ejected in the usual manner by the ejector 3 from the barrel, and the closure spring is loaded, which after the rear reversal of the breech throws the same again forward, whereby a new cartridge is'supplied from the magazine or belt.
- the locking of the breech is eifected in the reverse sequence ofthe unlockingl thereof.
- the inclined faces 4f (Fig. 4) of the locking tongue 9 spread the abutment aps 8 out, so that.
- head against the weapon casing may alternatively be elected by locking means of a different kind, such asc for example by the slider blocks 12 shown in Fig. 5.
- the manner of functioning of these slider blocks corref sponds exactly to that of the abutment flaps 8 of thev Figs. 2 to 4.y
- said locking means in said battery breech mass lockingposition beingV spaced from4 said'locking'tongue and simultaneouslyiengaging both' said abutment faces, said locking means in said' intermediate positivelockposition further simultaneously engaging said first' named abutment'face and said tongue, saidlocking means upan a rearward movement of said breech head out' of 'said' battery breechmass looking position caused' bytheV thrustof a fired cartridge effectinga sliding movement along said rst abutment face towards saidntermediate, positively locked position, therebyxdiminishing said spacing, and simultaneously etfectinga further slidingv movement along said second abutment facertoimpant a recoiling movement to saidl -rear breech portion, said locking means slidingl during;
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Toys (AREA)
- Component Parts Of Construction Machinery (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH879948X | 1957-02-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2948195A true US2948195A (en) | 1960-08-09 |
Family
ID=4544743
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US712813A Expired - Lifetime US2948195A (en) | 1957-02-07 | 1958-02-03 | Breech mechanism for automatic firearms |
Country Status (6)
Country | Link |
---|---|
US (1) | US2948195A (xx) |
BE (1) | BE564362A (xx) |
CH (1) | CH357006A (xx) |
FR (1) | FR1191193A (xx) |
GB (1) | GB879948A (xx) |
NL (2) | NL224362A (xx) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370372A (en) * | 1966-08-22 | 1968-02-27 | Vern C. Thompson | Bolt assembly for firearms |
US3707795A (en) * | 1970-11-19 | 1973-01-02 | Sauer & Sohn Gmbh J | Cylinder breech for small firearms |
US3789730A (en) * | 1970-09-11 | 1974-02-05 | Rheinmetall Gmbh | Automatic weapon with self locking bolt breech block |
US3835566A (en) * | 1972-06-07 | 1974-09-17 | Sauer & Sohn Gmbh J | Cylinder breech mechanism for small arms |
US5726376A (en) * | 1995-09-30 | 1998-03-10 | Rheinmetall Industrie Ag | Breechblock system for a gun |
US20050257682A1 (en) * | 2003-12-03 | 2005-11-24 | Jeffrey Hajjar | Method and apparatus for an action system for a firearm |
US20090101000A1 (en) * | 2006-04-19 | 2009-04-23 | Douglas Rawson-Harris | Bolt head locking arrangement for firearm weapons |
WO2013026076A1 (de) * | 2011-08-24 | 2013-02-28 | Merkel Jagd- Und Sportwaffen Gmbh | Pistole |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH596532A5 (xx) * | 1977-03-31 | 1978-04-14 | Oerlikon Buehrle Ag | |
CH622343A5 (xx) * | 1977-11-11 | 1981-03-31 | Oerlikon Buehrle Ag |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE641356C (de) * | 1931-04-19 | 1937-01-28 | Siemens Schuckertwerke Akt Ges | Schlossverriegelung fuer Feuerwaffen |
US2089671A (en) * | 1933-07-08 | 1937-08-10 | Stecke Edward | Automatic firearm |
GB535570A (en) * | 1939-02-23 | 1941-04-15 | Spirito Mario Viale | Improved breach mechanism for guns |
GB668117A (en) * | 1949-01-19 | 1952-03-12 | Czech Factory Of Arms | Improvements relating to automatic firearms |
-
0
- NL NL96731D patent/NL96731C/xx active
- NL NL224362D patent/NL224362A/xx unknown
- BE BE564362D patent/BE564362A/xx unknown
-
1957
- 1957-02-07 CH CH357006D patent/CH357006A/de unknown
-
1958
- 1958-02-03 US US712813A patent/US2948195A/en not_active Expired - Lifetime
- 1958-02-03 GB GB3451/58A patent/GB879948A/en not_active Expired
- 1958-02-07 FR FR1191193D patent/FR1191193A/fr not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE641356C (de) * | 1931-04-19 | 1937-01-28 | Siemens Schuckertwerke Akt Ges | Schlossverriegelung fuer Feuerwaffen |
US2089671A (en) * | 1933-07-08 | 1937-08-10 | Stecke Edward | Automatic firearm |
GB535570A (en) * | 1939-02-23 | 1941-04-15 | Spirito Mario Viale | Improved breach mechanism for guns |
GB668117A (en) * | 1949-01-19 | 1952-03-12 | Czech Factory Of Arms | Improvements relating to automatic firearms |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3370372A (en) * | 1966-08-22 | 1968-02-27 | Vern C. Thompson | Bolt assembly for firearms |
US3789730A (en) * | 1970-09-11 | 1974-02-05 | Rheinmetall Gmbh | Automatic weapon with self locking bolt breech block |
US3707795A (en) * | 1970-11-19 | 1973-01-02 | Sauer & Sohn Gmbh J | Cylinder breech for small firearms |
US3835566A (en) * | 1972-06-07 | 1974-09-17 | Sauer & Sohn Gmbh J | Cylinder breech mechanism for small arms |
US5726376A (en) * | 1995-09-30 | 1998-03-10 | Rheinmetall Industrie Ag | Breechblock system for a gun |
US20050257682A1 (en) * | 2003-12-03 | 2005-11-24 | Jeffrey Hajjar | Method and apparatus for an action system for a firearm |
US20090101000A1 (en) * | 2006-04-19 | 2009-04-23 | Douglas Rawson-Harris | Bolt head locking arrangement for firearm weapons |
WO2013026076A1 (de) * | 2011-08-24 | 2013-02-28 | Merkel Jagd- Und Sportwaffen Gmbh | Pistole |
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 |
---|---|
NL224362A (xx) | |
GB879948A (en) | 1961-10-11 |
NL96731C (xx) | |
FR1191193A (fr) | 1959-10-16 |
CH357006A (de) | 1961-09-15 |
BE564362A (xx) |
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