US3861309A - Sporting cartridge-case - Google Patents

Sporting cartridge-case Download PDF

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Publication number
US3861309A
US3861309A US114370A US11437071A US3861309A US 3861309 A US3861309 A US 3861309A US 114370 A US114370 A US 114370A US 11437071 A US11437071 A US 11437071A US 3861309 A US3861309 A US 3861309A
Authority
US
United States
Prior art keywords
base
casing
wad
radially
body 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
US114370A
Other languages
English (en)
Inventor
Leon Veber
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
Priority claimed from FR109137A external-priority patent/FR92616E/fr
Application filed by Individual filed Critical Individual
Priority to US114370A priority Critical patent/US3861309A/en
Application granted granted Critical
Publication of US3861309A publication Critical patent/US3861309A/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
    • F42B5/313—Cartridge cases of plastics, i.e. the cartridge-case tube is of plastics formed by assembling several elements all elements made of plastics
    • 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
    • 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 sporting cartridgecase comprises a casing and a base assembled by a plug of plastic material, cartridge-case characterized in that the skirt of the plug has, in the rough state, a projection, so that when assembling the elements of the cartridge-case by compression, a part of said plug mass penetrates into the annular crimping rim of the metal base, whereas the other part of this mass goes in the opposite direction, by coming into close contact with the casing owing to the previous opening out provided in the vicinity of the free edge of the skirt of the plug of plastic material.
  • the metal base is fastened to the plug of plastic material introduced and positioned by deformation inside and at the bottom of the sporting cartridge-case, the fastening being effected by means of an extension of this base, said extension extending for the entire height of the priming chamber made in the center of the plastic plug, which enables a particularly strong assembling to be made between the base, casing and plastic plug.
  • FIG. 1 is a section-elevation of an assembly plug between casing and base
  • FIG. 2 is a section-elevation of the assembled elements of a cartridge-case
  • FIG. 3 is a section-elevation showing a method of fastening the base-plug assembly
  • FIG. 4 is a view showing an alternative execution of FIG. 3,
  • FIG. 5 is a view showing a section of another method of carrying out the cartridge-case
  • FIG. 6 is a top view of FIG. 5.
  • the sporting cartridge-case comprising, in a known manner, a base 1 and a base 2, assembled by a plastic plug or wad 5 comprising a skirt 6 at its top part.
  • the skirt 6 of the plug or wad has a projection 7, opened out towards the exterior of the cartridge case for ensuring a close contact by pressure with the interior of casing of the cartridge-case and thus effects a total gastightness guaranteed by the skirt of the plastic plug or wad in the vicinity of the rear part of the cartridge-case, thus avoiding its deformation under the action of combustion gases, and hence guaranteeing the proper working of automatic or other arms at the moment of ejection.
  • this invention plans to make a skirt 6 having a projection 7 whose external diameter is greater than the internal diameter of the casing, 1.
  • the plastic plug or wad 5 assembling the casing and the base of the cartridgecase has, in the rough state, a relatively thick bottom portion 20, a narrowed skirt 6 extending from the bottom portion 5, the skirt 6 being terminated by a projection 7 of triangular section whose point is directed towards the exterior of the cartridge-case.
  • the largest diameter ex ternally corresponding to the point of the triangle formed by the projection 7 is greater by seven-tenths of a millimeter than the diameter of the wall of the cylinder.
  • the height of this projection will, in this case, be 1,5 mm.
  • the invention also relates to a process for assembling between the base 2, the casing l and the plastic plug or wad 5, which consists, when mounting by compression of the plug or wad 5 inside the casing l, to compress the mass of said plug, so that part of this mass penetrates into the annular crimping rim 9 of the base 2, whereas the other part of this mass goes in the opposite direction, while remaining in close contact with the inner wall of the casing l owing to the previous opening out 7 provided in the vicinity of the free edge of the skirt 6 of the plug or wad 5, which enables perfect gastightness of the cartridge-case to be obtained when firing.
  • the metal base 2 is provided with a central extension 2 extending over the entire height of the priming chamber 8 of the cartridge-case.
  • the central extension 2 defines a central tubular priming chamber in the base.
  • the base also defines an outer chamber 2
  • the extension 2 of the base is terminated by a series of small tongues or teeth 2 of serrated shape which press into the thickness of the plastic material of the plug or wad 5 surrounding the priming chamber 8.
  • the small tongues 2 are provided of variable number, four or six, for instance, and are crimped into the plastic material of the plug.
  • the teeth 2 of the extension of the base are slightly opened out externally, so as to penetrate into the mass of material forming the plug, which effects a very efficient fastenmg.
  • the teeth 2 of the extension are totally or partially turned back on the top part of the plastic plug, and are so crimped that the teeth 2 penetrate into the mass of the plug.
  • This method of assembling enables an inseparable, rigid one-piece to be assembled, whatever the elastic or plastic deformations undergone by the various materials forming the cartridge-case, when firing.
  • a shotgun cartridge case including a substantially cup-shaped base having a tubular chamber and an extraction rim thereon,
  • tubular casing having a greater height than said base and freely slidably insertable therein and fixedly attached thereto in pressure fit by a radially expanded end thereof within said extraction rim, and
  • means for securing and connecting said base and said casing to one another comprising a generally annular wad of thermoplastic material susceptible of permanent deformation, said wad located within said base and said casing, and extending to the bottom of said base comprising a uniformly cylindrical thick body portion,
  • a shotgun cartridge case including a substantially cup-shaped base having a tubular chamber and an extraction rim thereon,
  • tubular casing having a greater height than said base and initially freely slidably insertable therein and ultimately fixedly attached thereto in pressure fit by a radially expanded end thereof within said extraction rim, and
  • means for securing and connecting said base and said casing to one another comprising a generally annular wad of thermoplastic material susceptible of permanent deformation, said wad located within said base and said casing and extending to the bottom of said base comprising a uniformly cylindrical thick body portion,

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
  • Sampling And Sample Adjustment (AREA)
US114370A 1967-06-05 1971-02-10 Sporting cartridge-case Expired - Lifetime US3861309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US114370A US3861309A (en) 1967-06-05 1971-02-10 Sporting cartridge-case

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR109137A FR92616E (fr) 1966-06-08 1967-06-05 Douille de chasse
FR126622A FR93200E (fr) 1967-06-05 1967-10-31 Douille de chasse.
US73348368A 1968-05-31 1968-05-31
US114370A US3861309A (en) 1967-06-05 1971-02-10 Sporting cartridge-case

Publications (1)

Publication Number Publication Date
US3861309A true US3861309A (en) 1975-01-21

Family

ID=27444825

Family Applications (1)

Application Number Title Priority Date Filing Date
US114370A Expired - Lifetime US3861309A (en) 1967-06-05 1971-02-10 Sporting cartridge-case

Country Status (8)

Country Link
US (1) US3861309A (en:Method)
AT (1) AT303573B (en:Method)
BE (1) BE715967A (en:Method)
CA (1) CA922969A (en:Method)
DE (1) DE1703506A1 (en:Method)
ES (1) ES354687A1 (en:Method)
FR (1) FR93200E (en:Method)
GB (1) GB1223932A (en:Method)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129075A (en) * 1975-06-23 1978-12-12 Copal Company Limited Line printer
US4569288A (en) * 1983-07-05 1986-02-11 Olin Corporation Plastic cartridge case
US20100147177A1 (en) * 2007-06-06 2010-06-17 Van Stratum Bruce G Fluid energy delivery burst cartridge
ITUB20153731A1 (it) * 2015-09-18 2017-03-18 Baschieri & Pellagri Metodo per la realizzazione di bossoli per armi da fuoco
US12066279B2 (en) 2022-05-06 2024-08-20 Innovative Performance Applications, Llc Polymer ammunition casing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541438A (en) * 1923-10-06 1925-06-09 Western Cartridge Co Cartridge shell and process of making the same
US2336065A (en) * 1940-03-29 1943-12-07 Canadian Ind Ammunition
US2973711A (en) * 1959-02-04 1961-03-07 Alcan Company Inc Base wad overlay
US3246603A (en) * 1962-10-23 1966-04-19 Ronald W Comerford Shotgun cartridge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1541438A (en) * 1923-10-06 1925-06-09 Western Cartridge Co Cartridge shell and process of making the same
US2336065A (en) * 1940-03-29 1943-12-07 Canadian Ind Ammunition
US2973711A (en) * 1959-02-04 1961-03-07 Alcan Company Inc Base wad overlay
US3246603A (en) * 1962-10-23 1966-04-19 Ronald W Comerford Shotgun cartridge

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129075A (en) * 1975-06-23 1978-12-12 Copal Company Limited Line printer
US4569288A (en) * 1983-07-05 1986-02-11 Olin Corporation Plastic cartridge case
US20100147177A1 (en) * 2007-06-06 2010-06-17 Van Stratum Bruce G Fluid energy delivery burst cartridge
US8186274B2 (en) * 2007-06-06 2012-05-29 Martin Electronic Fluid energy delivery burst cartridge
ITUB20153731A1 (it) * 2015-09-18 2017-03-18 Baschieri & Pellagri Metodo per la realizzazione di bossoli per armi da fuoco
WO2017046697A1 (en) * 2015-09-18 2017-03-23 Baschieri & Pellagri S.P.A. Method for making cases for firearms
US20190011231A1 (en) * 2015-09-18 2019-01-10 Baschieri & Pellagri S.P.A. Method for making cases for firearms
US12066279B2 (en) 2022-05-06 2024-08-20 Innovative Performance Applications, Llc Polymer ammunition casing

Also Published As

Publication number Publication date
ES354687A1 (es) 1970-05-01
BE715967A (en:Method) 1968-10-16
AT303573B (de) 1972-11-27
FR93200E (fr) 1969-02-21
GB1223932A (en) 1971-03-03
DE1703506A1 (de) 1972-02-24
CA922969A (en) 1973-03-20

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