US3306203A - Threaded percussion primer - Google Patents

Threaded percussion primer Download PDF

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Publication number
US3306203A
US3306203A US354478A US35447864A US3306203A US 3306203 A US3306203 A US 3306203A US 354478 A US354478 A US 354478A US 35447864 A US35447864 A US 35447864A US 3306203 A US3306203 A US 3306203A
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US
United States
Prior art keywords
primer
cup
threaded
percussion
striker
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
US354478A
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English (en)
Inventor
Schaadt Franz
Backstein Gunter
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3306203A publication Critical patent/US3306203A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/0815—Intermediate ignition capsules, i.e. self-contained primary pyrotechnic module transmitting the initial firing signal to the secondary explosive, e.g. using electric, radio frequency, optical or percussion signals to the secondary explosive
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/10—Percussion caps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming

Definitions

  • the invention relates to a threaded percussion primer for cartridges use-d in automatic weapons, there being provided an outwardly open bore, in which the cup-shaped percussion cap is introduced, at the bottom of the threaded percussion primer.
  • the invention has for its object to provide a munition in which is ensured, :by the simplest possible means, a reliable seal between percussion cap and threaded primer.
  • this object is achieved in that the bore provided for the cup-shaped percusion primer has a peripheral groovepreferably closed in itselfinto which the adjacent portion of the wall of the cupshaped cap can be driven, with the appropriate deformation taking place, by the impact pressure of the striker.
  • an absolutely -gas-tight connection between percussion cap and threaded primer is achieved ⁇ by very simple means so that the powder gases of the primer char-ge and of the propellant charge, which burn under pressure, cannot discharge rearwardly, i.e. in the direction of the breach mechanism.
  • FIG. 1 is a longitudinal section on an enlarged scale
  • FIG. 2 is a lon-gitudinal section of a portion of the primer on a larger scale and showing the striker pin im mediately upon impact;
  • FIG. 3 is similar to FIG. 2 with the parts after the explosion.
  • the threaded percussion primer or casing 1 is provided with a threaded portion 2 serving to screw-connect with the cartridge sleeve.
  • the inner end of the threaded primer which points towards the cartridge or the propellant charge has a bore 3 and serves for receiving the primer charge 4. Externally, the primer charge is covered by a disc 5.
  • a second bore 6 which serves for receiving the percussion cap consisting of the cup-shaped element 7, the primer composition 8, and the anvil 9 with ignition apertures 10.
  • the space 11 adjacent the percussion cap is provided with a groove, and preferably an annular groove 13 into which the adjacent wall portion of the cup-shaped primer cap 7, whose front end -bears on the bottom of the bore 6, can be driven by the bearing pressure of the projected striker, while being deformed accordingly.
  • the wall of the cup is pushed into the annular groove and establishes a positive connection therewith by virtue of its shape so that, at this point, there is created an additional sealing position in the ymanner of a labyrinth seal.
  • the drawing clearly shows the cup-shaped element 7 having a rather thick bottom portion and thin side wall with the upper peripheral end 14 abutting against a supporting face 15 which is adjacent the space 11.
  • FIG. 2 shows the primer in which the cup-shaped element has a rather thick bottom portion 17 and thin outer walls 18 which, in FIG. 2, is indicated Aby the arrows s.
  • the upper rim or edge 14 of the cup-shaped member abuts against the supporting face 15 in the casing 1 and thus, it abuts against a rigid supporting element. Due to the force of the striker pin 16 striking against the cup-shaped member, the botto-m portion 17 is slightly bulged inwardly as shown in FIG. 2 and as to the thick section D, FIG.
  • a method of sealing a percussion primer in a casing of a cartridge with a cylindrical bore therein forming a side wall to prevent escape of Ipowder gases during tiring comprising forming an annular groove in the side Wall of the bore, securing a cup-shaped element within the bore containing the primer charge, and laterally forcing a part of the cup-shaped element into the groove by a striker to seal the cup-shaped element in the casing against the escape of powder gases upon the tiring of the cartridge by the impact force of a projected striker.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Air Bags (AREA)
US354478A 1960-04-27 1964-03-24 Threaded percussion primer Expired - Lifetime US3306203A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER27844A DE1145519B (de) 1960-04-27 1960-04-27 Zuendschraube

Publications (1)

Publication Number Publication Date
US3306203A true US3306203A (en) 1967-02-28

Family

ID=7402567

Family Applications (2)

Application Number Title Priority Date Filing Date
US354478A Expired - Lifetime US3306203A (en) 1960-04-27 1964-03-24 Threaded percussion primer
US434349A Expired - Lifetime US3351019A (en) 1960-04-27 1965-02-23 Primer charge

Family Applications After (1)

Application Number Title Priority Date Filing Date
US434349A Expired - Lifetime US3351019A (en) 1960-04-27 1965-02-23 Primer charge

Country Status (6)

Country Link
US (2) US3306203A (ru)
BE (1) BE603100A (ru)
CH (1) CH391513A (ru)
DE (1) DE1145519B (ru)
GB (1) GB918439A (ru)
IT (1) IT649629A (ru)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2355255A1 (de) * 1973-11-05 1975-05-07 Gianni Verga Casati Rohrzuendungsvorrichtung zur elektrischen zuendung von schiess- oder sprengmitteln, insbesondere von artilleriekartuschen
US4083307A (en) * 1977-03-07 1978-04-11 Hagenuk & Co. Gmbh Water-tight firing cap arrangement and method of making the same
DE2366343C2 (de) * 1973-11-05 1985-08-14 Gianni Verga Mailand/Milano Casati Elektrisch zündbare Anzündvorrichtung
EP0461095A1 (en) * 1990-06-06 1991-12-11 Bofors AB Improvements to primers
EP0656522A1 (de) * 1993-12-01 1995-06-07 Dynamit Nobel Aktiengesellschaft Patronenhülse
EP2354757A1 (en) * 2010-02-10 2011-08-10 Fiocchi Munizioni S.p.A. Primer with reduced charge

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195623B (de) * 1963-08-14 1965-06-24 Mine Safety Appliances Co Vorrichtung zum Durchschneiden der Ankertaue von Seeminen
SE380617B (sv) * 1973-05-28 1975-11-10 Nitro Nobel Ab Sprengladdningskropp for punktvis sprengfogning av metallkroppar
DE2504906C3 (de) * 1975-02-06 1980-11-27 Dynamit Nobel Ag, 5210 Troisdorf Treibladungsanzünder
FR2652322B1 (fr) * 1989-09-27 1991-11-22 Livbag Snc Dispositif d'absorption de choc pour occupants d'un vehicule automobile et utilisation de ce dispositif.
DE4131285C2 (de) * 1991-09-20 1997-05-28 Rheinmetall Ind Ag Anzünderbuchse für eine Treibladung
US5608184A (en) * 1995-02-03 1997-03-04 Universal Tech Corporation Alternative use of military propellants as novel blasting agents
US6959647B2 (en) * 1999-10-25 2005-11-01 Mark A. Wistrom Cartridge for a firearm
US7841279B2 (en) * 2006-05-24 2010-11-30 Reynolds George L Delayed extraction and a firearm cartridge case
WO2014197079A1 (en) * 2013-03-15 2014-12-11 Nemec William Joseph Advanced modular ammunition cartridges and systems
US10976144B1 (en) 2018-03-05 2021-04-13 Vista Outdoor Operations Llc High pressure rifle cartridge with primer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US400165A (en) * 1889-03-26 Peimee foe caeteidges
US431601A (en) * 1890-07-08 Wilhelm lorenz
US472782A (en) * 1892-04-12 Thomas g
US573897A (en) * 1896-12-29 Frederik mohr
US740790A (en) * 1903-02-11 1903-10-06 American Automatic Arms Company Cartridge.
US2381900A (en) * 1933-09-18 1945-08-14 Raymond L Graumann Delay element for fuses
US2696191A (en) * 1951-10-17 1954-12-07 William E Sheehan Electrically operated primer
US2926607A (en) * 1957-05-28 1960-03-01 Jr Hollis L Muller Hermetically sealed explosive cartridge

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US456508A (en) * 1891-07-21 Alfred nobel
DE73301C (de) * O. BÖKLEN in Lauffen a. Neckar Patronenhülse mit nach vorn erweiterter Zündhütchenkammer
US962888A (en) * 1910-05-23 1910-06-28 Winchester Repeating Arms Co Primer for small-arm ammunition.
US1709870A (en) * 1924-06-20 1929-04-23 Western Cartridge Co Propellant powder and process of making the same
DE477032C (de) * 1925-09-17 1929-05-30 Rheinisch Westfaelische Spreng Zwei- oder mehrfluegeliger kegelfoermiger Amboss fuer Zuendhuetchen
US2031677A (en) * 1933-11-08 1936-02-25 Du Pont Blasting cap charge
DE708996C (de) * 1937-10-16 1941-08-02 Rheinmetall Borsig Akt Ges Zuendung fuer die Treibladung in Patronenhuelsen, insbesondere kleineren Kalibers
DE724747C (de) * 1941-01-31 1942-09-04 Polte Fa Zuendschraube fuer Geschuetzpatronen und Kartuschen mit Abdichtung
US2423837A (en) * 1942-02-26 1947-07-15 Carl A Martin Primer
GB605135A (en) * 1945-12-14 1948-07-16 John Norman Pring Improvements in or relating to magazines or containers for cartridge priming compositions
US3117043A (en) * 1960-09-20 1964-01-07 Remington Arms Co Inc Granular smokeless powder with peroxide coating

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US400165A (en) * 1889-03-26 Peimee foe caeteidges
US431601A (en) * 1890-07-08 Wilhelm lorenz
US472782A (en) * 1892-04-12 Thomas g
US573897A (en) * 1896-12-29 Frederik mohr
US740790A (en) * 1903-02-11 1903-10-06 American Automatic Arms Company Cartridge.
US2381900A (en) * 1933-09-18 1945-08-14 Raymond L Graumann Delay element for fuses
US2696191A (en) * 1951-10-17 1954-12-07 William E Sheehan Electrically operated primer
US2926607A (en) * 1957-05-28 1960-03-01 Jr Hollis L Muller Hermetically sealed explosive cartridge

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2355255A1 (de) * 1973-11-05 1975-05-07 Gianni Verga Casati Rohrzuendungsvorrichtung zur elektrischen zuendung von schiess- oder sprengmitteln, insbesondere von artilleriekartuschen
DE2366343C2 (de) * 1973-11-05 1985-08-14 Gianni Verga Mailand/Milano Casati Elektrisch zündbare Anzündvorrichtung
US4083307A (en) * 1977-03-07 1978-04-11 Hagenuk & Co. Gmbh Water-tight firing cap arrangement and method of making the same
EP0461095A1 (en) * 1990-06-06 1991-12-11 Bofors AB Improvements to primers
US5157219A (en) * 1990-06-06 1992-10-20 Swedish Ordnance-Ffv/Bofors Ab Primers
EP0656522A1 (de) * 1993-12-01 1995-06-07 Dynamit Nobel Aktiengesellschaft Patronenhülse
US5481978A (en) * 1993-12-01 1996-01-09 Dynamit Nobel Aktiengesellschaft Cartridge case
EP2354757A1 (en) * 2010-02-10 2011-08-10 Fiocchi Munizioni S.p.A. Primer with reduced charge
US20110192306A1 (en) * 2010-02-10 2011-08-11 Carlo Galluzzi Primer with a reduced charge
ITMI20100197A1 (it) * 2010-02-10 2011-08-11 Fiocchi Munizioni Spa Innesco a carica ridotta

Also Published As

Publication number Publication date
DE1145519B (de) 1963-03-14
IT649629A (ru)
US3351019A (en) 1967-11-07
GB918439A (en) 1963-02-13
CH391513A (de) 1965-04-30
BE603100A (fr) 1961-08-16

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