US3287843A - Breech bolt with firing pin operable at different angles - Google Patents

Breech bolt with firing pin operable at different angles Download PDF

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Publication number
US3287843A
US3287843A US430628A US43062865A US3287843A US 3287843 A US3287843 A US 3287843A US 430628 A US430628 A US 430628A US 43062865 A US43062865 A US 43062865A US 3287843 A US3287843 A US 3287843A
Authority
US
United States
Prior art keywords
striker pin
abutment plate
breech
breech bolt
aperture
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
US430628A
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English (en)
Inventor
Alexander W Seidel
Tilo T Moller
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.)
Heckler & Koch Fa GmbH
Heckler & Koch G M B H Firma
Original Assignee
Heckler & Koch Fa GmbH
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 Heckler & Koch Fa GmbH filed Critical Heckler & Koch Fa GmbH
Application granted granted Critical
Publication of US3287843A publication Critical patent/US3287843A/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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/13—Percussion or firing pins, i.e. fixed or slidably-mounted striker elements; Mountings therefor

Definitions

  • the invention relates to an automatic fire-arm with a displaceably supported breech carrier engageable from the outside for cocking the fire-arm, and a breech bolt connected to it guiding a striker pin, which is provided with an exchangeable barrel for the purpose of converting to a different calibre.
  • the whole breech bolt must be changed, besides the barrel, that is to say, the part of the breech Which serves for introducing the cartridge into the barrel, for firing the cartridge, and finally also for ejecting the cartridge, and consequently must be adapted to a certain extent to the type and size of the cartridge which is to be used.
  • the already proposed automatic pistol is still further improved by the fact that the breech bolt does not need to be changed.
  • the invention consists in the fact that the breech bolt embodies a central bore in the base thereof forming an abutment plate, and one or more eccentrically arranged apertures for the passage of the striker pin, in which the striker pin tip can be'selectively inserted, and that the aperture provided in the breech bolt for the striker pin has such diameter that the striker pin adopts an inclined position to the axis of the aperture without the function of the weapon being affected.
  • This measure permits the same striker pin to be used both for firing centrally ignited cartridges and also edge firing cartridges of different calibres.
  • the abutment plate may embody a fiat front surface against which the base of the cartridge bears so that the same abutment plate is used for cartridges of different calibres.
  • the striker pin may embody a ball-like thickened portion in the region of its forward end which serves for guiding the striker pin in the corresponding aperture of the abutment plate.
  • the striker pin is guided and held in the breech bolt by means of a safety roller entering transversely through the breech bolt, and which is provided with an opening for the striker pin.
  • This safety roller can be constructed according to the invention in such manner that it can be withdrawn laterally from the breech bolt. This permits the striker pin to be withdrawn from the breech and its tip to be introduced into another aperture in the abutment plate. It would also be possible to provide a longitudinal slot for withdrawing or shifting the striker pin, on the under side of the breech bolt.
  • a particularly simple and convenient arrangement is where the abutment plate according to the invention is releasibly fastened to the breech bolt.
  • a screw For fastening the abutment plate to the front of the breech bolt a screw is provided, the head of which engages a corresponding recess in the abutment plate.
  • the rear of the abutment plate and the front of the breech bolt may advantageously be provided with mutually corresponding profiles whereby a constant accurate seating of the abutment plate on the breech bolt is always permitted.
  • the pivotal arrangement of the striker pin makes it possible to provide the safety roller guiding the striker pin in the breech bolt with an opening for the striker pin, which has a sloped portion by which the end of the striker pin can be brought out of the region of the hammer in the safe position of the safety roller.
  • FIG. 1 is a longitudinal section through the parts of a pistol essential for the invention
  • FIG. 2 is a section on the line IIII through the arrangement of FIG. 1,
  • FIG. 3 is a section similar to FIG. 1 after setting of the weapon for a different calibre
  • FIG. 4 is a further constructional example of the invention in section similarly to FIG. 2.
  • a part of the grip portion of the weapon is shown at 1 to which the barrel 2 or 23 is fitted.
  • a cartridge 3 or 24 is shown in the barrel which is inserted into the barrel by the breech bolt 4.
  • the breech bolt 4 is fastened to the breech carrier 5, which, moreover, carries the sight 6.
  • a longitudinal bore 7 is provided in the breech bolt 4 for receiving the striker pin 8 and the striker pin spring 9.
  • the striker pin embodies in the region of its forward end a ball-shaped enlargement 8a to guide it in apertures of an abutment plate 15. Near its rear end the striker pin 8 is guided in a safety roller 11 inserted in a cross bore 10 of the breech bolt 4.
  • a recess 12 with a sloped portion 13 is provided in this safety roller for the striker pin 8, which recess is so constructed and arranged that on rotation of the safety roller 11 in the counter clockwise direction the rear end 8b of the striker pin is so far lowered that it comes out of the path of the hammer 14. Thereby a high measure of safety is attained in the weapon.
  • the abutment plate 15 referred to is releasably fastened to the front end of the breech bolt 4 by means of a screw 16 which traverses an aperture 17 in the abutment plate and is screwed into a threaded aperture 18 in the breech bolt 4.
  • a screw 16 which traverses an aperture 17 in the abutment plate and is screwed into a threaded aperture 18 in the breech bolt 4.
  • the abutment plate 15 At the lower edge of the abutment plate 15 the latter is recessed so as to produce a profiled part 19 which co-operates with a corresponding projection on the front end face of the breech bolt 4 and permits accurate centering of the abutment plate 15.
  • the head of the screw 16 lies in a recess 20 of the abutment plate.
  • the barrel 2 is arranged for receiving a cartridge 3 of relatively large calibre with central firing.
  • the striker pin tip with the thickened portion 8a is inserted in a central aperture 21 of the abutment plate 15.
  • an eccentric aperture 22 is provided in the abutment plate 15 as Well as the central aperture 21, which is used for guiding the striker pin 8 if small calibre ammunition with edge firing cartridges is used, that is, for example, 5.6 mm. small calibre ammunition.
  • FIGS. 2 and 3 show that on changeover of the pistol from the ammunition according to FIG. 1 to the cartridges 24 according to FIG. 3, only the barrel 2 of the weapon has to be changed for the barrel 23, and after releasing the abutment plate 15 the striker pine 8 changed over from the aperture 21 to the aperture 22 and then the abutment plate 15 again fastened in position.
  • an abutment plate 25 is provided which embodies several eccentric apertures 27 in addition to the central aperture 26, and is, therefore, suitable for firing edge firing cartridges of different calibres.
  • the abutment plate 25 is provided with a fiat surface, just like the abutment plate 15 facing the cartridges, that is free of guide means by which the use of the abutment plates would be limited to a definite calibre.
  • a further aperture 28 is shown which serves for supporting the extractor, not shown.
  • the invention is not limited to the constructional example shown, but changes are possible within the scope of the invention. If a pistol according to the invention the breech bolt is provided with a releasably mounted abutment plate, it would be possible to provide a separate abutment plate for each type of cartridge which would then not need to be flat but could be provided with a profiling corresponding to the cartridge bottom and also need embody only a single aperture for the passage of the striker pin. It would then be possible to associate each barrel with a different abutment plate.
  • the abutment plate and the breech bolt could be formed as a common part.
  • the possibility of shifting the striker pin could then be obtained by the fact that the safety roller 11 is so constructed that it is withdrawable laterally from the breech bolt. It then releases the striker pin which could be withdrawn behind the breech bolt at least so far that its tip comes, for example, out of the aperture 21 and can be introduced into the aperture 22. After changing over the striker pin the safety roller is again returned to its starting position.
  • an opening 31 can be provided in the breech carrier 5, the upper edge of which is shown in dotted lines in FIG. 3 at 31.
  • a further possibility for changing the striker pin with a fixed abutment plate 15 could be provided by the arrangement of a slot in one longer side of the breech bolt, especially in its under side, as is indicated in FIG. 3, by the dotted lines 32. Such a slot would permit the striker pin to be moved forwardly against the force of the spring 9 so that its rear end 8b moves out of the safety roller 11, and so that the striker pin can be withdrawn downwardly from the breech bolt.
  • the insertion of the striker pin is effected reversely in that initially the striker pin tip is introduced into the selected aperture in the abutment plate 15 and then the striker pin is moved so far forwardly until the end of the striker pin enters the slot 32 and can be in- ,troduced into the opening of the safety roller.
  • a breech bolt with a detachable abutment plate is advantageous since a removable abutment plate makes the shifting of the striker pin particularly simple without the mechanical problems of nroducint the breech bolt being increased to a serious extent.
  • Further departures from the constructional examples shown may follow in particular from the fact that with constructional forms of the invention only some of the inventive characteristics can be used, or several of them flmav he annlied in desired combinations.
  • An automatic pistol comprising a body, an externally operated breech carrier, at breech bolt carried by said carrier, means to support an interchangeable barrel, an abutment plate mounted on the breech bolt for engaging the base of a cartridge inserted into the barrel, said abutment plate having a central aperture and at least one eccentric aperture, and a striker pin adapted to be introduced selectively into one of said bores, said striker pin being accommodated for the major part of its length in a bore within the breech bolt having a diameter selected so that the striker pin may adopt various positions relatively to the axis of said bore according to which of the apertures in the abutment plate are engaged by a tip end of the striker pin and without influencing the function of the pistol.
  • an automatic pistol as claimed in claim 1 wherein the breech head embodies at its end an abutment plate having a central aperture and at least one eccentrically arranged aperture for the passage of the striker pin, and into which the striker pin tip can be selectively inserted, and wherein a bore provided in the breech head for receiving the striker pin has such a diameter that the striker pin can adopt a position inclined to the axis of the bore without influencing the function of the pistol.
  • breech head embodies at least along one longer side, preferably on the under side, a slot through which the striker pin is accessible for withdrawal and shifting.
  • An automatic pistol according to claim 8 wherein the rear face of the abutment plate and the front face of the breech head are provided with mutually corresponding profiles.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US430628A 1964-02-18 1965-02-05 Breech bolt with firing pin operable at different angles Expired - Lifetime US3287843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH51729A DE1205425B (de) 1964-02-18 1964-02-18 Automatische Pistole

Publications (1)

Publication Number Publication Date
US3287843A true US3287843A (en) 1966-11-29

Family

ID=7157807

Family Applications (1)

Application Number Title Priority Date Filing Date
US430628A Expired - Lifetime US3287843A (en) 1964-02-18 1965-02-05 Breech bolt with firing pin operable at different angles

Country Status (8)

Country Link
US (1) US3287843A (en))
AT (1) AT250219B (en))
BE (1) BE659846A (en))
CH (1) CH430504A (en))
DE (1) DE1205425B (en))
GB (1) GB1063506A (en))
IL (1) IL22921A (en))
SE (1) SE301923B (en))

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411405A (en) * 1966-12-29 1968-11-19 Pachmayr Gun Works Gun head space takeup elements
US3686786A (en) * 1970-09-23 1972-08-29 Meyer Fa Wilhelm Lock for double-barreled firearm
US3708902A (en) * 1970-08-11 1973-01-09 Space Age Control Inc Survival weapon system
US3760522A (en) * 1971-07-31 1973-09-25 Heckler & Koch Gmbh Breech mechanism for a hand firearm
US4440062A (en) * 1981-08-07 1984-04-03 Mcqueen Sidney J Reversible bolt for firearms
US5778585A (en) * 1994-02-26 1998-07-14 Schweizerische Industriegesellschaft Semiautomatic weapon
WO2004010071A1 (de) * 2002-07-18 2004-01-29 Heckler & Koch Gmbh Schlagbolzen besonders für maschinengewehr
US20050132627A1 (en) * 2002-07-18 2005-06-23 Ernst Wossner Firing pins and breechblocks for firearms
US10488164B1 (en) * 2018-03-29 2019-11-26 Larry Utt Firearm system configured to fire a cartridge of reduced length

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136935B (en) * 1983-03-26 1986-11-19 Hilton Gun Co Firearms

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2090657A (en) * 1933-08-26 1937-08-24 David M Williams Automatic firearm
DE670241C (de) * 1934-08-10 1939-01-24 Mauser Werke Ag Schlagbolzensicherung an einer Selbstladepistole mit Hahn und Abzugsspannung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411405A (en) * 1966-12-29 1968-11-19 Pachmayr Gun Works Gun head space takeup elements
US3708902A (en) * 1970-08-11 1973-01-09 Space Age Control Inc Survival weapon system
US3686786A (en) * 1970-09-23 1972-08-29 Meyer Fa Wilhelm Lock for double-barreled firearm
US3760522A (en) * 1971-07-31 1973-09-25 Heckler & Koch Gmbh Breech mechanism for a hand firearm
US4440062A (en) * 1981-08-07 1984-04-03 Mcqueen Sidney J Reversible bolt for firearms
US5778585A (en) * 1994-02-26 1998-07-14 Schweizerische Industriegesellschaft Semiautomatic weapon
WO2004010071A1 (de) * 2002-07-18 2004-01-29 Heckler & Koch Gmbh Schlagbolzen besonders für maschinengewehr
US20050132627A1 (en) * 2002-07-18 2005-06-23 Ernst Wossner Firing pins and breechblocks for firearms
US10488164B1 (en) * 2018-03-29 2019-11-26 Larry Utt Firearm system configured to fire a cartridge of reduced length

Also Published As

Publication number Publication date
GB1063506A (en) 1967-03-30
BE659846A (en)) 1965-06-16
CH430504A (de) 1967-02-15
IL22921A (en) 1969-02-27
SE301923B (en)) 1968-06-24
AT250219B (de) 1966-10-25
DE1205425B (de) 1965-11-18

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