US3292541A - Cartridge - Google Patents

Cartridge Download PDF

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Publication number
US3292541A
US3292541A US417698A US41769864A US3292541A US 3292541 A US3292541 A US 3292541A US 417698 A US417698 A US 417698A US 41769864 A US41769864 A US 41769864A US 3292541 A US3292541 A US 3292541A
Authority
US
United States
Prior art keywords
cartridge
bottom piece
cap
primer
piece
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
US417698A
Other languages
English (en)
Inventor
Stadler Hans
Gawlick Heinz
Stahlmann 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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Application granted granted Critical
Publication of US3292541A publication Critical patent/US3292541A/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
    • F42B5/26—Cartridge cases
    • F42B5/30—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics
    • F42B5/307—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics formed by assembling several elements
    • 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
    • F42B5/26—Cartridge cases
    • F42B5/36—Cartridge cases modified for housing an integral firing-cap

Definitions

  • the present invention relates to cartridges, and more particularly to cartridge cases intended for use with propellent charges of relatively high energy content.
  • Propellent charge cartridges for commercial or military purposes are similar in their construction to the known buckshot cartridges. They consist of a paper cartridge case closed by a plug or closure member made of cardboard and of a metallic cap at the bottom which is pressed together at the rim thereof with the bottom plug and the case.
  • Propellent cartridges with an energy content of about up to 200 mkg. may be handled with cartridges of this type.
  • the simple cartridge similar to the buckshot cartridge can no longer be used in that case.
  • a cartridge for propellent charges also of large energy content can be created according to the present invention in that the cartridge case is made, especially molded in one piece with a bottom piece whose thickness amounts to at least 3 to 8 times the wall thickness of the case, the bottom piece is protected and reinforced by a metal cap and the primer or percussion cap is inserted directly into a bore of the bottom piece.
  • the bottom piece is thereby to have such a thickness that it is able to absorb about the same forces as the customary metallic bottom piece.
  • the metallic bottom piece is, therefore, obviated and is replaced in accordance with the present invention by a strong bottom piece of plastic material made in one piece with the case.
  • the reinforcement has to participate in the absorption of the forces only to a small proportion, but may also be so constructed that it serves as abutment.
  • the protective reinforcement has the purpose to avoid a flowing of the plastic material by pressure and heat and a piercing and falling out of the bottom piece.
  • the bottom piece is so constructed that the primer is partly concentrically surrounded by a powder space. It is achieved thereby that the gas pressure acts not only on the end face of the primer but simultaneously also from the side. A shooting or blasting out of the primer is thereby prevented which would lead to disturbances.
  • Another object of the present invention residues in the provision of a cartridge of the type described above which is not only able to accommodate relatively high energy content propellent charges but can be manufactured by simple and relatively inexpensive means.
  • a further object of the present invention resides in the provision of a suitably molded cartridge made of plastic material which consists of a unitary integrally formed cartridge case and bottom piece capable of withstanding the high pressures produced during the intended high energy outputs.
  • Still a further object of the present invention resides in the provision of a plastic cartridge made of plastic material in which tearing or flowing of the plastic material is effectively prevented.
  • Still another object of the present invention resides in the provision of a plastic cartridge which assures safe removal from the cartridge chamber under all operating conditions.
  • a further object of the present invention resides in the provision of a cartridge construction of the type described above which prevents with certainty the falling out or dropping out of the primer.
  • Another object of the present invention resides in the provision of a plastic cartridge which obviates the need for a metallic bottom piece without sacrificing strength and proper operation of the cartridge even under relatively high energy output conditions.
  • Still :a further object of the present invention resides in the provision of a plastic cartridge in which the gas pressure of the cartridge is also effective laterally on the primer to aid in the prevention of a falling out on the part of the latter.
  • FIGURE 1 is a partial axial cross sectional view through a first embodiment of a cartridge in accordance with the present invention
  • FIGURE 2 is a partial axial cross sectional view through a modified embodiment of a cartridge in accordance with the present invention in which the primer is exposed directly to the striker mechanism through a central aperture arranged in the metallic cap,
  • FIGURE 3 is a partial axial cross sectional view through a further modified embodiment of a cartridge in accordance with the present invention having an electric fuse,
  • FIGURE 4 is a transverse cross sectional view taken along the line IV-IV of FIGURE 3,
  • FIGURE 5 is a partial axial cross sectional view, similar to FIGURE 2, of a still further modified embodiment ofda cartridge in accordance with the present invention, an
  • FIGURE 6 is a transverse cross sectional view through a modification similar to that shown in FIGURE 5.
  • bottom piece 2 in accordance with the present invention is reinforced with a protective metallic cap 3.
  • the primer or fuse 9 is inserted into the bottom piece 2.
  • the bottom piece 2 is provided with a molded-in annular groove 4 into which is secured or anchored a metallic cap 3.
  • a metallic cap 3 Such anchoring takes place in the embodiment of FIGURES 1 and 2 by a head 5 of the cap 3.
  • this anchoring is realized by pressed-in indentations or bulges 6 of the cap 3.
  • the bottom piece 2 is provided with a projecting rim 7 about which the cap is flanged over at 8. If one desires to make even more strong the seating of the reinforcing cap, then one may provide the bottom piece 2 on the outside thereof with corrugations, ridges, or grooves whose outer diameter is larger than the inner diameter of the reinforcing cap 3, for example as shown in FIGURE 6. A strong frictional engagement is achieved by the deformation of the corrugations or ridges upon emplacement of the cap 3.
  • a material connection may be utilized by bonding, cementing, gluing, or welding.
  • the type of connection is determined by manufacturing considerations and is, therefore, only of subordinate importance to the present invention.
  • a primer 9 is inserted into the bottom piece 2 of the cartridge which may be either a percussion fuse or piercing primer as shown in FIGURES 1, 2, and 5 or an electric fuse as shown in FIGURE 3.
  • the construction of the bottom plate 10 of the reinforcing cap 3 is also determined by the type of primer or fuse.
  • the bottom plate 10 is closed but is weakened in its center, circular Zone 11.
  • the bottom plate 10 is provided with a circularly shaped aperture 12 so that the firing or striker member can impinge directly on the primer 9.
  • FIGURE 3 is intended for an electric fuse.
  • the lower electrode 13 has to be exposed and insulated whereas the outer electrode rests at the reinforcing cap as ground.
  • the bottom plate 10 serves simultaneously in all embodiments as safety means against a falling out of the primer or fuse.
  • FIGURES 1, 2, and 5 The aforementioned special construction is illustrated in FIGURES 1, 2, and 5.
  • an approximately conically shaped extension 14 is formed into the bottom piece 2 so that an annular space 15 is produced about the primer 9 which is filled with powder.
  • the gas pressure of the powder therefore, exerts a force acting radially on the detonator cap which prevents a blasting out of the detonator cap.
  • a cartridge for commercial or military purposes containing propellant charges with large energy contents having a plastic cartridge case with a reinforced plastic bottom piece and a primer means inserted in a central bore of the bottom piece, and a metallic cap reinforcing the bottom piece
  • the improvement comprising mutually interengaging means-on the bottom piece and the cap for form-locking engagement operable to produce a clamping positive connection between the cap and the bottom piece, and the end face of the cap being provided with a central aperture having an inside dimension smaller than the adjacent surface of the primer to form an abutment and prevent the removal of the primer.
  • interengaging means includes a rim formed on the rearward end of the bottom piece and interengaged with the enlarged flange.
  • the bottom piece includes an axially extending tubular member receiving the primer means and forming an annular powder chamber surrounding the primer means.
  • said axially extending tubuular member is externally frustoconically shaped with its relatively wide base adjacent said central aperture; and the inner and outer walls of said annular powder chamber each coverging towards each other in the axial direction toward said central aperture.
  • interengaging means includes said enlarged flange and a rim formed on the rearward end of the bottom piece interengaged with the enlarged flange.
  • the thickness of the reinforced bottom piece is at least 3-8 times the thickness of the wall of the cartridge case, and the case is made unitary with the bottom piece.
  • said primer means includes an electric fuse having a plurality of electrodes; said metallic cap abuts against one of said electrodes to establish the ground connection.
  • the thickness of the reinforced bottom piece is at least 3-8 times the thickness of the wall of the cartridge case; and said cartridge case is made unitary with the bottom'piece.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Closures For Containers (AREA)
  • Elimination Of Static Electricity (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Air Bags (AREA)
US417698A 1963-12-13 1964-12-11 Cartridge Expired - Lifetime US3292541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED43163A DE1278289B (de) 1963-12-13 1963-12-13 Kartusche fuer gewerbliche oder militaerische Zwecke

Publications (1)

Publication Number Publication Date
US3292541A true US3292541A (en) 1966-12-20

Family

ID=7047381

Family Applications (1)

Application Number Title Priority Date Filing Date
US417698A Expired - Lifetime US3292541A (en) 1963-12-13 1964-12-11 Cartridge

Country Status (7)

Country Link
US (1) US3292541A (de)
AT (1) AT267371B (de)
DE (1) DE1278289B (de)
FI (1) FI42927C (de)
GB (1) GB1092369A (de)
IL (1) IL22548A (de)
NL (1) NL6414427A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795195A (en) * 1970-01-21 1974-03-05 J Silva Electrical initiator
US3850101A (en) * 1973-07-26 1974-11-26 V Sower Electrical primer
US4132173A (en) * 1976-05-08 1979-01-02 Ziger, S.A. Cartridge case assembly
US5127331A (en) * 1991-03-25 1992-07-07 Olin Corporation Reduced recoil compression formed shotshell casing
US9322625B1 (en) 2011-10-24 2016-04-26 F. Richard Langner Systems and methods for launching water from a disrupter cannon
US20180321020A1 (en) * 2017-05-03 2018-11-08 The Evans Findings Company, Inc. Flexible pressure vessel for assembled ammunition casing
US11448490B2 (en) * 2016-03-09 2022-09-20 True Velocity Ip Holdings, Llc Two-piece primer insert for polymer ammunition
US11519702B1 (en) 2021-12-01 2022-12-06 General Dynamics Ordnance and Tactical Systems -Canada Inc. Cartridge and cartridge case
US12066279B2 (en) 2022-05-06 2024-08-20 Innovative Performance Applications, Llc Polymer ammunition casing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3032712A1 (de) * 1980-08-30 1982-04-08 Dynamit Nobel Ag, 5210 Troisdorf Anzuendmittel mit verstaerkerladung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191015517A (en) * 1910-06-28 1911-06-28 Gottlob Emmanuel Loeble Improvements in Cartridges.
US1485404A (en) * 1920-09-03 1924-03-04 M L Ex Ltd Ammunition
FR1110473A (fr) * 1954-09-04 1956-02-13 Procédé pour la fabrication de douilles de cartouches ayant un corps ou un fond enmatière synthétique et douilles et cartouches ainsi obtenues
FR1183667A (fr) * 1956-10-05 1959-07-10 Olin Mathieson Cartouche à plombs en matière plastique et son procédé de fermeture
FR1193324A (fr) * 1958-03-15 1959-11-02 Rey Freres Perfectionnements aux cartouches de chasse
US3062146A (en) * 1956-03-15 1962-11-06 Olin Mathieson Primer
US3099958A (en) * 1960-01-12 1963-08-06 Remington Arms Co Inc Firearm cartridges
US3125924A (en) * 1962-07-16 1964-03-24 Charles e

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR995100A (fr) * 1949-09-30 1951-11-26 Procédé et dispositif pour la fabrication d'une cartouche de chasse, et cartouches ainsi obtenues
BE554842A (de) * 1953-01-30
BE530681A (de) * 1954-02-11
FR1273394A (fr) * 1960-07-18 1961-10-13 Cartoucherie Francaise Perfectionnement aux cartouches de chasse
FR1333628A (fr) * 1961-09-18 1963-07-26 Olin Mathieson Cartouche en matière plastique

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191015517A (en) * 1910-06-28 1911-06-28 Gottlob Emmanuel Loeble Improvements in Cartridges.
US1485404A (en) * 1920-09-03 1924-03-04 M L Ex Ltd Ammunition
FR1110473A (fr) * 1954-09-04 1956-02-13 Procédé pour la fabrication de douilles de cartouches ayant un corps ou un fond enmatière synthétique et douilles et cartouches ainsi obtenues
US3062146A (en) * 1956-03-15 1962-11-06 Olin Mathieson Primer
FR1183667A (fr) * 1956-10-05 1959-07-10 Olin Mathieson Cartouche à plombs en matière plastique et son procédé de fermeture
FR1193324A (fr) * 1958-03-15 1959-11-02 Rey Freres Perfectionnements aux cartouches de chasse
US3099958A (en) * 1960-01-12 1963-08-06 Remington Arms Co Inc Firearm cartridges
US3125924A (en) * 1962-07-16 1964-03-24 Charles e

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795195A (en) * 1970-01-21 1974-03-05 J Silva Electrical initiator
US3850101A (en) * 1973-07-26 1974-11-26 V Sower Electrical primer
US4132173A (en) * 1976-05-08 1979-01-02 Ziger, S.A. Cartridge case assembly
US5127331A (en) * 1991-03-25 1992-07-07 Olin Corporation Reduced recoil compression formed shotshell casing
US9322625B1 (en) 2011-10-24 2016-04-26 F. Richard Langner Systems and methods for launching water from a disrupter cannon
US11448490B2 (en) * 2016-03-09 2022-09-20 True Velocity Ip Holdings, Llc Two-piece primer insert for polymer ammunition
US20180321020A1 (en) * 2017-05-03 2018-11-08 The Evans Findings Company, Inc. Flexible pressure vessel for assembled ammunition casing
US11519702B1 (en) 2021-12-01 2022-12-06 General Dynamics Ordnance and Tactical Systems -Canada Inc. Cartridge and cartridge case
US12066279B2 (en) 2022-05-06 2024-08-20 Innovative Performance Applications, Llc Polymer ammunition casing

Also Published As

Publication number Publication date
FI42927C (fi) 1970-11-10
FI42927B (de) 1970-08-03
IL22548A (en) 1968-08-22
AT267371B (de) 1968-12-27
GB1092369A (en) 1967-11-22
DE1278289B (de) 1968-09-19
NL6414427A (de) 1965-06-14

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