US2890626A - Locking members for a composite breech block - Google Patents

Locking members for a composite breech block Download PDF

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Publication number
US2890626A
US2890626A US584007A US58400756A US2890626A US 2890626 A US2890626 A US 2890626A US 584007 A US584007 A US 584007A US 58400756 A US58400756 A US 58400756A US 2890626 A US2890626 A US 2890626A
Authority
US
United States
Prior art keywords
striker
breech
head
locking
guide block
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
US584007A
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English (en)
Inventor
Amsler Rudolf
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.)
Schweizerische Industrie Gesellschaft
Original Assignee
Schweizerische Industrie Gesellschaft
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 Schweizerische Industrie Gesellschaft filed Critical Schweizerische Industrie Gesellschaft
Application granted granted Critical
Publication of US2890626A publication Critical patent/US2890626A/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
    • 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
    • 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
    • F41A5/24—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated by direct action of gas pressure on bolt or locking elements

Definitions

  • the present invention has the object of attaining a safe closure of the rear end of the barrel of automatic.
  • the invention has the object of providing a fire arm which ensures a safe functioning independently of irregularities in the ammunition.
  • the fire arm according to the invention is characterised in that the striker and the striker guide block are braced to one another, and that, between the striker guide block and the breech head, means are provided for the interlocking of these two elements which are put into action during a movement of the striker guide block relative to the breech head and after the initiation of the locking of the breech head by the said locking elements, and which are put out of action during a return movement of the striker relative to these two elements and after the initiation of the unlocking of the breech head which is locked by the said locking elements.
  • ttes Patent 0 ice Fig. 2 shows the same section of the fire arm but immediately after triggering 01f the shot
  • Fig. 3 shows the same section of the fire arm, but during the initiation of the release of the locking device
  • Fig. 4 shows a section of the fire arm on the line IV-IV of Fig. 3,
  • Fig. 5 shows a modification of the design of the locking bodies
  • Fig. 6 shows a section on the line VIVI of Fig. 5, and
  • Fig. 7 shows a further modification.
  • the breech body moveably arranged in the breech housing 1 consists of three members which are slidable relative to one another, namely the breech head 2, the striker 4, which at its forward end is constructed as a percussion pin 3, and of the striker guide block 5.
  • the striker 4 is guided in a longitudinal bore 50 of the striker guide block 5.
  • the breech body as a whole is under the action of the closure spring 6 which abuts on the bottom piece 7 of the weapon and with its other end acts on the head 8 of the striker 4.
  • the head 8 of the striker 4 forms an abutment designed for co-operation with the striker guide block 5.
  • a preloaded spring 9 which abuts at one end on a shoulder, or projection, 10 of the striker 4 and which acts with its other end on the annular face 37 of the striker guide block 5, braces these two parts against one another in such a manner that normally the striker guide block 5 contacts the head 8 of the striker 4 (Fig. 1).
  • the striker 4 is in turn guided in a bore of the breech head 2 and is freely moveable relative to the latter in the axial direction.
  • a bolt 11 is attached which traverses a longitudinal slot 12 in the striker 4. The length of this slot 12 limits the mutual displacement of the two members 2 and 4.
  • the breech Fig. 1 shows a fire arm in a longitudinal section, name- 1 1y with the breech mechanism cocked,
  • housing 1 has two locking grooves 15 lying opposite one another in the inner circumferential surface of the forward portion 1a of said breech housing.
  • the striker guide block 5 carries a pin 16 on which a two-armed pawl 17 is pivotally mounted.
  • the rear arm 18 of the pawl 17 is under the action of the compression spring 19 which abuts on the striker guide block 5.
  • the rear end of the breech head 2 is undercut in the range of the pawl 17 to form a hook 22.
  • the striker guide block 5 and thereby the whole breech body is released by the action of the sear rod 23 (Fig. 1), so that the compressed closure spring 6, which acts on the head 8 of the striker 4, throws the same forward.
  • the striker carries the striker guide block 5 along with it through theintermediary of the head 8 serving as an abutment.
  • the breech head 2 is brought to an abrupt stop through engagement with the end of the cartridge chamber 25 while the members 4 and 5 continue their movement owing to their inertia. 1n the forward end position of thebreech head 2 its -recesses 13 lie in juxtaposition to the twolocking grooves 15 of the. breech housing. 1. Ac.- cordingly there is nothing more in the way of an outward movement of the cylindrical locking elements 14. Such a displa'cementzis' enforced by the continued movement of the striker 4 Wh'iChiStl'll.” acts as before with theiface 41 oftits end 27 onzthe locking elements 14, andi'the said locking elements: are thereby pushed into the locking grooves .of the. breech housing 1.
  • wedge faces 31 and 32 are providedonthebreech head 2 and on the end of the arm 20 of the pawl 17, respectively, in such a manner that,: shortly after the nose 21 has passed the hook, they come into engagement with one another and thereby assistthe action of the spring 19 in order to assure always a safe locking action.
  • The. gaspressure which rises in the course of the development of the shot imparts an increasing force on the ation is initiated owing to the movement of the striker 4 relative to the breech head 2.
  • the transmission ratios arising in the transmission of the forces from the breech head 2'" to the striker 4' are determined by the shape of the effective faces 40 and 41 and of the locking elements 14:
  • the resistance opposing the displacement of the striker 4 is determined by the characteristics of the springs 9 and 6.
  • the faces 40 and 41 are advantageously sel'ect'ed in such a manner that the gas forces are reduced to a certain" extent when being transmitted to the striker 4: Ofcourse care has to be taken in this choice that 4'. no self-locking may occur in the transmission of forces, neither. in one nor in the other direction of transmission.
  • the striker guide block is constructedas a single member.
  • the same could be sub-divided'into two or more individual members moveable relative to one another-and braced resiliently one against the other.
  • said latch means comprise a hook shaped element on said breech head, pawl means pivotally mounted on said striker guide block and having a hook shaped portion for latching cooperation with said hook shaped element, and yieldable means connected with said pawl means biasing said pawl means towards latching position, said pawl means and said hook shaped element having inclined surfaces thereon in a position to slide upon each other and thereby cause pivotal movement of said pawl means against the action of said yieldable means when said striker guide block is moved towards said breech head for latching engagement therewith.
  • cam means include a cam on said pawl means, and a projection on said striker for engagement with said cam.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Component Parts Of Construction Machinery (AREA)
US584007A 1955-05-13 1956-05-10 Locking members for a composite breech block Expired - Lifetime US2890626A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH799087X 1955-05-13

Publications (1)

Publication Number Publication Date
US2890626A true US2890626A (en) 1959-06-16

Family

ID=4537508

Family Applications (1)

Application Number Title Priority Date Filing Date
US584007A Expired - Lifetime US2890626A (en) 1955-05-13 1956-05-10 Locking members for a composite breech block

Country Status (6)

Country Link
US (1) US2890626A (it)
BE (1) BE547716A (it)
CH (1) CH339540A (it)
DE (1) DE1034515B (it)
FR (1) FR1154092A (it)
GB (1) GB799087A (it)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053002A (en) * 1959-12-02 1962-09-11 Katherine B Groves Breech bolt lock
US3101648A (en) * 1959-01-14 1963-08-27 Walther Fritz Automatic firearm with means for maintaining slow rate of firing
US3153982A (en) * 1961-10-31 1964-10-27 Rheinmetall Gmbh Breech mechanism for automatic weapons
US3447417A (en) * 1966-03-09 1969-06-03 Benelli Spa Gun with a floating breech bolt
US3566745A (en) * 1967-10-28 1971-03-02 Heckler & Koch Gmbh Automatic firearm bipartite semirigid bolt
US4213261A (en) * 1978-06-27 1980-07-22 James P. Claypool Breech locking mechanism
US4381694A (en) * 1980-03-11 1983-05-03 Rheinmetall Gmbh Recoil block or brake for a linear breech mechanism in an automatic fire arm
US5024139A (en) * 1989-12-08 1991-06-18 Kniarmco Inc. Firearm with movable barrel safety
US5050480A (en) * 1989-12-08 1991-09-24 Kniarmco Inc. Trigger assembly for a firearm
US5050481A (en) * 1989-12-08 1991-09-24 Kniarmco Inc. Rolling supports for trigger and firing pin assemblies in a firearm
US5105570A (en) * 1990-12-14 1992-04-21 Colt's Manufacturing Company Inc. Firing pin spring assembly
US5518335A (en) * 1994-02-28 1996-05-21 Hesco, Inc. Radial ball lock-up device
US5900576A (en) * 1994-09-08 1999-05-04 Gabriel; Franz Semi-rigid locking system for a firearm
US20160370135A1 (en) * 2015-05-18 2016-12-22 Francis M. Plumb Recoil Impulse Reducing Bolt Carrier Group for Firearms

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3843936C1 (it) * 1988-12-24 1990-05-31 Braun Ag, 6000 Frankfurt, De
DE4418107C2 (de) * 1994-05-24 1998-07-30 Thomas Schade Hülsenverschluß für Sport- und Jagdwaffen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT142974B (de) * 1932-09-30 1935-10-10 Rudolf Von Frommer Zylinderverschluß für Repetiergewehre.
US2476232A (en) * 1947-11-06 1949-07-12 Olin Ind Inc Inertia operated bolt lock
FR1046084A (fr) * 1950-12-06 1953-12-03 Obturateur pour armes automatiques
US2775166A (en) * 1951-08-22 1956-12-25 Mini Of Supply Pivoted breech bolt lock for gas piston firearms

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE582097C (de) * 1929-02-14 1933-08-08 Siemens Schuckertwerke Akt Ges Schlossverriegelung fuer Feuerwaffen
DE588477C (de) * 1930-03-28 1933-11-29 Danuvia Ipari Es Kereskedelmi Verschluss fuer selbsttaetige Schusswaffen
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
CH267988A (de) * 1948-09-03 1950-04-30 Sig Schweiz Industrieges Verfahren zum Verriegeln des Verschlusses einer selbsttätigen Feuerwaffe.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT142974B (de) * 1932-09-30 1935-10-10 Rudolf Von Frommer Zylinderverschluß für Repetiergewehre.
US2476232A (en) * 1947-11-06 1949-07-12 Olin Ind Inc Inertia operated bolt lock
FR1046084A (fr) * 1950-12-06 1953-12-03 Obturateur pour armes automatiques
US2775166A (en) * 1951-08-22 1956-12-25 Mini Of Supply Pivoted breech bolt lock for gas piston firearms

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101648A (en) * 1959-01-14 1963-08-27 Walther Fritz Automatic firearm with means for maintaining slow rate of firing
US3053002A (en) * 1959-12-02 1962-09-11 Katherine B Groves Breech bolt lock
US3153982A (en) * 1961-10-31 1964-10-27 Rheinmetall Gmbh Breech mechanism for automatic weapons
US3447417A (en) * 1966-03-09 1969-06-03 Benelli Spa Gun with a floating breech bolt
US3566745A (en) * 1967-10-28 1971-03-02 Heckler & Koch Gmbh Automatic firearm bipartite semirigid bolt
US4213261A (en) * 1978-06-27 1980-07-22 James P. Claypool Breech locking mechanism
US4381694A (en) * 1980-03-11 1983-05-03 Rheinmetall Gmbh Recoil block or brake for a linear breech mechanism in an automatic fire arm
US5024139A (en) * 1989-12-08 1991-06-18 Kniarmco Inc. Firearm with movable barrel safety
US5050480A (en) * 1989-12-08 1991-09-24 Kniarmco Inc. Trigger assembly for a firearm
US5050481A (en) * 1989-12-08 1991-09-24 Kniarmco Inc. Rolling supports for trigger and firing pin assemblies in a firearm
US5105570A (en) * 1990-12-14 1992-04-21 Colt's Manufacturing Company Inc. Firing pin spring assembly
US5518335A (en) * 1994-02-28 1996-05-21 Hesco, Inc. Radial ball lock-up device
US5900576A (en) * 1994-09-08 1999-05-04 Gabriel; Franz Semi-rigid locking system for a firearm
US20160370135A1 (en) * 2015-05-18 2016-12-22 Francis M. Plumb Recoil Impulse Reducing Bolt Carrier Group for Firearms

Also Published As

Publication number Publication date
GB799087A (en) 1958-07-30
FR1154092A (fr) 1958-04-02
CH339540A (de) 1959-06-30
BE547716A (it)
DE1034515B (de) 1958-07-17

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