US3577922A - Combustible shell base - Google Patents

Combustible shell base Download PDF

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Publication number
US3577922A
US3577922A US796956A US79695669A US3577922A US 3577922 A US3577922 A US 3577922A US 796956 A US796956 A US 796956A US 79695669 A US79695669 A US 79695669A US 3577922 A US3577922 A US 3577922A
Authority
US
United States
Prior art keywords
primer
bent edge
central opening
cartridge
bottom portion
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
US796956A
Other languages
English (en)
Inventor
Paul Zehfeld
Hans-Dieter Harnau
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3577922A publication Critical patent/US3577922A/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
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/08—Cartridges, i.e. cases with charge and missile modified for electric ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/02—Cartridges
    • F42B8/04—Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge
    • F42B8/06—Blank cartridges, i.e. primed cartridges without projectile but containing an explosive or combustible powder charge for cap-firing pistols

Definitions

  • the invention relates to a combustible cartridge bottom structure provided with an electric primer.
  • the present invention has for an object to create a combustible cartridge bottom part provided with an electric primer, while avoiding the mentioned disadvantages, the bottom portion developing a resistance against a firing contact of the weapon with the resistance being provided by the resiliency of the cartridge bottom portion.
  • a further object of the invention that is solved by the fact, that the cartridge bottom portion consists of an easily combustible synthetic substance with several circular surfaces, which have been arranged in different planes in relation to one another and have been developed resiliently in such a manner, that the primer will oppose a resistance corresponding to the spring power of the cartridge bottom to the firing contact on the weapon.
  • the cartridge bottom has a central opening which extends inwardly in the shape of a casing. This opening is followed first by a funnel-shaped annular surface, then by a groove in the manner of an annular depression and finally by a plane bottom surface, which ends in a sector-shaped end surface in a cylindrical part of the casing.
  • the individual surfaces have been connected with one another by bent edges.
  • the central opening serves for the reception and guidance of the primer, whereby the bent edge, connecting the central opening and the funnel-shaped annular surface, serves as a stop to the primer provided with a collar or flange.
  • FIG. 1 is a cross section showing a cartridge bottom inserted in the chamber of a gun barrel with opened breach
  • FIG. 2 is a cross section showing the cartridge bottom of FIG. 1 with a closed breach.
  • the gun barrel at its rear part has a gun chamber 1 which received the projectile and the cartridge charge 2.
  • the cartridge charges 2 can be inserted into the chamber 1 of the barrel either without a casing or by means of a cartridge casing or together with a projectile in the form of a round of ammunition consisting of one piece.
  • a central opening 4 which has been prolonged inwardly in the form of a casing.
  • the central opening 4 broadens by means of a bent edge 5 toward the outside to a funnel-shaped annular surface 6, which in turn ends in a bent edge 7.
  • the cartridge bottom 3 again proceeds inwardly and forms a deep groove 8 in the form of an annular depression, which is followed on the outside by means of a bent edge 9 by a plane bottom surface 10. The latter merges to the outside by a segmentshaped final surface 1 1 into a cylindrical casing part 12.
  • the central opening 4 serves for the reception and guidance of a primer 13, whose shoulder 14 abuts against the bent edge 5.
  • the firing contact 15 of the primer 13 is, as is well known, insulated against the primer housing consisting of metal.
  • the middle part of the cartridge bottom 3 projects with the primer l3 beyond the periphery of the gun chamber 1 whenever the breach is opened.
  • a sliding wedge-type breach block 18 with the ignition contact 19 which moves transversely to the axis of the barrel along a slanting plane toward the gun chamber 1, the projecting parts of the cartridge bottom 3 with the primer 13 being pressed back somewhat against the resistance of the spring force inherent in the cartridge bottom 3 until the sliding wedge-type breach block 18 fits against the gun barrel enclosing the gun chamber 1.
  • Combustible cartridge provided with an electric primer comprising a bottom portion of easily combustible synthetic material having a plurality of annular surfaces which are arranged in different planes in relation to one another and which are resilient, and a primer in the bottom portion developing a resistance against a firing contact of the weapon, said resistance being provided by the resiliency of the cartridge bottom portion.
  • the cartridge bottom portion is provided with a central opening extending inwardly in the shape of a casing and which is followed first by at a bent edge by a funnel-shaped annular surface, then by a further bent edge and then a groove in the shape of an annular depression, and finally a bent edge adjacent a plane bottom surface which passes over on its part to an arc-shaped end surface and merges into a cylindrical casing part.
  • the cartridge bottom portion is provided with a central opening extending inwardly in the shape of a casing and which is followed first by at a bent edge by a funnel-shaped annular surface, then by a further bent edge and then a groove in the shape of an annular depression, and finally a bent edge adjacent a plane bottom surface which passes over on its part to an arc-shaped end surface and merges into a cylindrical casing part, and in which the central opening is adapted to receive and guide the primer so that the bent edge lying between the central opening and the funnel-shaped annular surface serves as a stop for the primer which latter is provided with a collar.
  • the cartridge bottom portion is provided with a central opening extending inwardly in the shape of a casing and which is followed fir'st by a bent edge by a funnel-shaped annular surface, then by a further bent edge and then a groove in the shape of an annular depression, and finally a bent edge adjacent a plane bottom surface which passes over on its part to an arc-shaped end surface and merges into a cylindrical casing part, and in which the central opening is adapted to receive and guide the primer so that the bent edge lying between the central opening and the funnel-shaped annular surface serves as a stop for the primer which latter is provided with a collar, and in which for the establishment of a contact of the mass between the primer and a gun chamber, a metal band is provided connected with the primer inserted in the central opening, said band extending across the cartridge bottom up to a ring made of metal foil and fitting on the outside against the side of the bottom portion.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Lighters Containing Fuel (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
US796956A 1965-11-17 1969-02-06 Combustible shell base Expired - Lifetime US3577922A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DER42011A DE1291262B (de) 1965-11-17 1965-11-17 Verbrennbarer Kartuschboden
DER0043283 1966-05-14

Publications (1)

Publication Number Publication Date
US3577922A true US3577922A (en) 1971-05-11

Family

ID=25991946

Family Applications (1)

Application Number Title Priority Date Filing Date
US796956A Expired - Lifetime US3577922A (en) 1965-11-17 1969-02-06 Combustible shell base

Country Status (6)

Country Link
US (1) US3577922A (enrdf_load_stackoverflow)
BE (1) BE689840A (enrdf_load_stackoverflow)
DE (2) DE1291262B (enrdf_load_stackoverflow)
FR (1) FR1499078A (enrdf_load_stackoverflow)
GB (1) GB1123089A (enrdf_load_stackoverflow)
SE (1) SE312283B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714728A (en) * 1970-12-22 1973-02-06 Us Army Compressible primer contact and fixed firing pin assembly
US5297491A (en) * 1991-09-20 1994-03-29 Rheinmetall Gmbh Casing bottom for a propelling charge casing
US20050011394A1 (en) * 1999-10-25 2005-01-20 Westrom Mark A. Cartridge for a firearm
US12123694B2 (en) 2020-09-01 2024-10-22 Nexter Munitions Combustible cartridge case for ammunition

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2728066B1 (fr) * 1994-12-12 1997-01-24 Giat Ind Sa Systeme de mise a feu par arc electrique d'une munition sans douille
FR2926133B1 (fr) * 2008-01-09 2010-01-22 France Cheddite Procede de fabrication de cylindres pour douille de cartouche et composition.

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US699256A (en) * 1900-10-20 1902-05-06 John W Stockett Firing attachment for breech-loading ordnance.
US876510A (en) * 1907-04-01 1908-01-14 Harry T Wheeler Firing mechanism for ordnance.
US1081983A (en) * 1912-05-14 1913-12-23 John D Pedersen Cartridge.
US2117885A (en) * 1934-12-06 1938-05-17 Hasek Jaroslav Firearm
US3114290A (en) * 1962-10-12 1963-12-17 Earle M Harvey Breech sealing means for automatic firearms adapted to fire caseless ammunition
US3169333A (en) * 1963-06-14 1965-02-16 Jr John J Scanlon Projectile for firing a leakproof caseless round
US3446113A (en) * 1967-09-01 1969-05-27 Trw Inc Sealed open chamber breech mechanism

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE164859C (enrdf_load_stackoverflow) * 1904-07-26
GB128298A (en) * 1917-07-25 1919-06-26 Helmuth Paul Martin Improvements in Ammunition.
FR503945A (fr) * 1917-12-17 1920-06-21 Edgar William Brandt Enveloppe de gargousse
DE364956C (de) * 1918-12-19 1922-12-05 Ernst Ludorf Geschoss, das seine Treibladung ausschliesslich im Innern traegt und elektrisch abgefeuert wird
DE1097338B (de) * 1959-06-27 1961-01-12 Ernst Kauder Elektrischer Sicherheitszuender
CH379964A (de) * 1960-09-16 1964-07-15 Oerlikon Buehrle Ag Patronenzündelement mit Zündhütchen für elektrische Zündung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US699256A (en) * 1900-10-20 1902-05-06 John W Stockett Firing attachment for breech-loading ordnance.
US876510A (en) * 1907-04-01 1908-01-14 Harry T Wheeler Firing mechanism for ordnance.
US1081983A (en) * 1912-05-14 1913-12-23 John D Pedersen Cartridge.
US2117885A (en) * 1934-12-06 1938-05-17 Hasek Jaroslav Firearm
US3114290A (en) * 1962-10-12 1963-12-17 Earle M Harvey Breech sealing means for automatic firearms adapted to fire caseless ammunition
US3169333A (en) * 1963-06-14 1965-02-16 Jr John J Scanlon Projectile for firing a leakproof caseless round
US3446113A (en) * 1967-09-01 1969-05-27 Trw Inc Sealed open chamber breech mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3714728A (en) * 1970-12-22 1973-02-06 Us Army Compressible primer contact and fixed firing pin assembly
US5297491A (en) * 1991-09-20 1994-03-29 Rheinmetall Gmbh Casing bottom for a propelling charge casing
US20050011394A1 (en) * 1999-10-25 2005-01-20 Westrom Mark A. Cartridge for a firearm
US6976431B2 (en) 1999-10-25 2005-12-20 Armalite Inc. Cartridge for a firearm
US12123694B2 (en) 2020-09-01 2024-10-22 Nexter Munitions Combustible cartridge case for ammunition

Also Published As

Publication number Publication date
BE689840A (enrdf_load_stackoverflow) 1967-05-02
DE1578204B2 (de) 1973-08-16
GB1123089A (en) 1968-08-14
DE1291262B (de) 1969-03-20
DE1578204A1 (de) 1971-04-01
SE312283B (enrdf_load_stackoverflow) 1969-07-07
FR1499078A (fr) 1967-10-20
DE1578204C3 (de) 1974-03-14

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