US1925776A - Direct interlocking device for the breech block and the firing pin of automatic firearms - Google Patents

Direct interlocking device for the breech block and the firing pin of automatic firearms Download PDF

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Publication number
US1925776A
US1925776A US594884A US59488432A US1925776A US 1925776 A US1925776 A US 1925776A US 594884 A US594884 A US 594884A US 59488432 A US59488432 A US 59488432A US 1925776 A US1925776 A US 1925776A
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US
United States
Prior art keywords
breech
firing pin
breech block
shoulders
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
US594884A
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English (en)
Inventor
Scotti Alfredo
Anelotti Giovanni Battista
Campi Bortolo Giuseppe
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Individual
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Individual
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Publication date
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Publication of US1925776A publication Critical patent/US1925776A/en
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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
    • 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
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
    • F41A3/26—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt

Definitions

  • the invention has for its object an arrangement applicable to automatic firearms in which are provided means adapted to prevent the firing pin from detonating the cartridge before the' Firearms are already known in which there, are provided parts adapted-to retain the firing,
  • Firearms are also known in which there are provided locking members controlled by the suc--' cessive movements of the barrel, by a gas piston or by similar means which hold the breech block in the ,,closed position until the gas pressure resulting from the explosion is sufficiently reduced.
  • trigger spring usually employed for the actua- .tion of the firing pin; the said breech block;
  • breech block is provided in known manner with projections which engage in grooves formed in the breech, a small forward end portion of which has a helicoidal form so as to cause rotation of at least part of the breech block about the axis of the firearm; thisarrangement is characterized in that the firing pin, which is positively urged by the restoring spring, is provided with shoulders which press against a flange arranged inthe breech and that the said flange is provided with indentations which arrive opposite the shoulders of the firing pin when the breech block effects its final closing rotation, so as to permit of the shoulders entering therein to complete the stroke of the firing pin and to effect the tangential locking of the breech block which cannot again move rearwardly until the firing pin is returned again by a suitable part of the gun actuated by the release of the explosion gases.
  • the subsequent retraction of the firing pin which. is necessary in order to disengage its shoulders from the indentations of the breech block to permit the latter to rotate as it recedes in its turn, may be effected by the recoil of the gun or by a gas piston 'or known type; for this 0 purpose it is suflicient to provide the firing pin with a projection formed and arranged so as to be capable of actuation by the member selected for this purpose.
  • Figs. 1 and 2 are two side views of an automatic firearm. which illustrate the same in two positions, namely with the breech open and closed respectively:
  • Figs. 4, 4a,,4b show respectively a. side view, a front view-and a cross section of the firing pin provided with the shoulders and the engaging Figs.-' 5, 5a and 5b are similar illustrations or the breech block.
  • breech block 5 recoils under the action of the explosion gases and is'retumed to the closed positionby a restoring spring 6.
  • the said breech lock is provided with a longitudinal cavity, in
  • the firing pin in this firearm isnotprovided with a special trigger spring but it is actuated positively by the restoring spring 6.
  • the firing pin has two shoulders 4a, 4b which normally abut against the edge of a flange formed in the breech: in the example shown this flange consists merely of the circular edge of the rear surface of the breech block.
  • the shoulders 4a, 4b transmit to the breech block the pressure of the restoring spring which returns it to the closed position.
  • the firing pin occupies a somewhat backward position in the breech blockwhich does not permit [it to reach the cartridge.
  • the unlocking of the breech block is entrusted to an ordinary gas piston 3, working in a cylinder 2 arranged at a convenient part of the barrel 1 of the firearm.
  • This piston before the bullet leaves the barrel, is forced rearwardly by the gases which enter the cylinder 2 and retracts the projection 40 which is integral with the firing pin.
  • the firing pin is then moved rearwardly and frees the breech block which, under the action of the remaining gas pressure, recoils in turn after having executed a partial rotation in the helicoidal grooves 50, which movementbrings the unindented portion of the flange of the breech block opposite the shoulders 4a, 4b of the firing pin; under theaction of the gases the breech block completes its .recoil stroke carrying with it the firing pin and loading the restoring spring 6.
  • the projection 4c of the firing pin could be actuated by the recoil of the barrel if the arrangement is applied to a firearm with a recoil ing barrel.
  • the projection 40' of the firing pin is made use of to retain the firearm in the cocked position and ready to be discharged, since this projection can be engaged with the projection 4d of the tumbler. This engagement keeps the return spring 6 strained and the breech block cannot complete itsfor ward stroke until the tumbler is displaced.
  • an automatic firearm comprising a barrel, a breech in said barrel, a breech block adapted to close said breech, a firing pin adapted to detonate cartridges inserted in said breech, said breech having grooves formed therein and projections on the breech block adapted to slide in said grooves, said grooves being formed at their ends with helicoidal deviations adapted by cooperation with said projections to cause a partial rotation of said breech block, the provision on said firing pin of shoulders and in said breech block of indentations, said breech block being rotatable with respect to said firing pin, said shoulders being adapted, upon effective closure of said breech, to enter said indentations thereby permitting the said firing pin to detonate a cartridge in said breech.
  • an automatic fire arm comprising a barrel, a breech in said barrel, a breech block adapted to close said breech, a firing pin adapted to detonate cartridges inserted in said breech, said breech having grooves formed therein and projections on the breech block adapted to slide in said grooves, said grooves being formed at their ends with helicoidal deviations adapted by cooperation with said projections to cause a partial rotation of said breech block, theprovision on said firing pin of shoulders and in said breech block of indentations, said breech block being rotatable with respect to said firing pin, said shoulders being adapted, upon effective closure of said breech, to enter said indentations thereby permitting the said firing pin to detonate a cartridge in said breech, and means actuated by the force of the explosion gases for unlocking said breech.
  • an automatic firearm comprising a barrel, a breech insaid barrel, a breech block adapted to close said breech, a firing pin adapted to detonate cartridgesin said breech, said breech having grooves formed therein and projections on the breech block adapted to slide in said grooves, said grooves being formed at their ends with helicoidal deviations adapted by cooperation with said projections to cause a partial rotation of said breech block, the provision on said firing dentations, 'said shoulders being adapted, upon effective closure of said breech, to enter said indentations thereby permitting the said firing pin to detonate a cartridge in said breech, and-means actuated by the force. of the explosion gases and including a piston and a gas cylinder for unlocking the breechof said firearm.
  • an automatic firearm comprising a barrel, a breech .in said barrel, a breech block adapted to close said breech, a firing pin adapted to detonate cartridges inserted in said breech, said breech having grooves formed therein and projections on the breech block adapted to slide in said grooves, said grooves being formed at their ends with helicoidal deviations adapted by CO?

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
US594884A 1931-02-24 1932-02-24 Direct interlocking device for the breech block and the firing pin of automatic firearms Expired - Lifetime US1925776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT160791X 1931-02-24

Publications (1)

Publication Number Publication Date
US1925776A true US1925776A (en) 1933-09-05

Family

ID=11148487

Family Applications (1)

Application Number Title Priority Date Filing Date
US594884A Expired - Lifetime US1925776A (en) 1931-02-24 1932-02-24 Direct interlocking device for the breech block and the firing pin of automatic firearms

Country Status (7)

Country Link
US (1) US1925776A (en, 2012)
BE (1) BE386446A (en, 2012)
CH (1) CH160791A (en, 2012)
DE (1) DE678992C (en, 2012)
ES (1) ES125697A1 (en, 2012)
FR (1) FR733127A (en, 2012)
GB (1) GB381827A (en, 2012)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567198A (en) * 1945-09-26 1951-09-11 John C Garand Receiver and bolt mechanism for firearms
US3990347A (en) * 1973-05-30 1976-11-09 Junker Ralph D Firearms having a bolt mounted for longitudinal and rotational movement
US4020741A (en) * 1974-07-10 1977-05-03 Junker Ralph D Firearms
US5886281A (en) * 1997-01-28 1999-03-23 Waltraud Bucher-Kirstein Breech block control for firearm for projectiles
US20100005956A1 (en) * 2002-07-03 2010-01-14 Ernst Wossner Methods and apparatus for use in a locked machine gun
US20100282064A1 (en) * 2006-05-17 2010-11-11 Wolfgang Bantle Locking systems for use with firearms
WO2015193275A3 (de) * 2014-06-16 2016-02-18 Rheinmetall Waffe Munition Gmbh Verschluss- und sicherheitssystem für eine waffe
US11391529B2 (en) * 2020-03-04 2022-07-19 Jameson S. Ellis Striker assembly and associated firearm and method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS247481B1 (en) * 1985-04-04 1987-01-15 Karel Strouhal Repetition rifle closure

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567198A (en) * 1945-09-26 1951-09-11 John C Garand Receiver and bolt mechanism for firearms
US3990347A (en) * 1973-05-30 1976-11-09 Junker Ralph D Firearms having a bolt mounted for longitudinal and rotational movement
US4020741A (en) * 1974-07-10 1977-05-03 Junker Ralph D Firearms
US5886281A (en) * 1997-01-28 1999-03-23 Waltraud Bucher-Kirstein Breech block control for firearm for projectiles
US20100005956A1 (en) * 2002-07-03 2010-01-14 Ernst Wossner Methods and apparatus for use in a locked machine gun
US7721639B2 (en) * 2002-07-03 2010-05-25 Heckler & Koch Gmbh Methods and apparatus for use in a locked machine gun
US20100282064A1 (en) * 2006-05-17 2010-11-11 Wolfgang Bantle Locking systems for use with firearms
US8074556B2 (en) * 2006-05-17 2011-12-13 Heckler & Koch, Gmbh Locking systems for use with firearms
WO2015193275A3 (de) * 2014-06-16 2016-02-18 Rheinmetall Waffe Munition Gmbh Verschluss- und sicherheitssystem für eine waffe
US11391529B2 (en) * 2020-03-04 2022-07-19 Jameson S. Ellis Striker assembly and associated firearm and method

Also Published As

Publication number Publication date
FR733127A (fr) 1932-09-30
CH160791A (fr) 1933-03-31
ES125697A1 (es) 1932-04-16
GB381827A (en) 1932-10-13
BE386446A (en, 2012)
DE678992C (de) 1939-07-26

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