US2196018A - Cartridge case provided with a nonmetallic surface - Google Patents

Cartridge case provided with a nonmetallic surface Download PDF

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Publication number
US2196018A
US2196018A US94055A US9405536A US2196018A US 2196018 A US2196018 A US 2196018A US 94055 A US94055 A US 94055A US 9405536 A US9405536 A US 9405536A US 2196018 A US2196018 A US 2196018A
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US
United States
Prior art keywords
aluminum
layer
case
cartridge case
cartridge
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
US94055A
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English (en)
Inventor
Korpiun Joachim
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.)
Bayer Pharma AG
Original Assignee
Schering 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 Schering AG filed Critical Schering AG
Application granted granted Critical
Publication of US2196018A publication Critical patent/US2196018A/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
    • F42B5/28—Cartridge cases of metal, i.e. the cartridge-case tube is of metal
    • F42B5/295—Cartridge cases of metal, i.e. the cartridge-case tube is of metal coated
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/917—Corrosion resistant container

Definitions

  • This invention refers to cartridge cases, and more especially to cartridge cases provided with a nonmetallic surface.
  • a. new way to overcome said difficulties consists in providing suitable layers of separation between the cartridge case and the wall of the barrel, said layers excluding metallic contact beg5 tween these two parts even when they are in a highly heated condition.
  • Such layers of separation may consist, for instance, of oxides or mixtures of oxides that have been produced upon the cartridge itself by artificial means.
  • the melting point of the layer of separation 3 shan be higher than that of at least one metal component of the alloy that might be formed on welding of the cartridge case and the wall of the barrel. The best results are achieved when the layer of separation is articiallyformed from S5 the basic material of the cartridge caseitself.
  • A' uniform aluminum oxide layer of a high melting point as it is artificially produced upon the aluminum by oxidation is an especially suitable layer of separation for preventing the Welding together as well as the formation of an alloy between the highly heated metals; thereby the danger of the 58 According to the electrolytic method the ox-V cartridge case becoming welded together with.
  • idation' may be carried out, for instance, in a simple and convenient manner in sulfuric acid or oxalic acid solution by means of alternating or direct current.
  • baths of this type for carrying out the oxidation is not necessary; for, other electrolytic baths that are suitable to produce oxide layers on aluminum by means of direct or alternating current may be employed likewise.
  • cartridge cases made of superficially oxl idized aluminum have the further' advantage that they possess a hard and smooth surface and hence, do not corrode even on storing the same in a moist atmosphere.
  • cartridge cases enable proper Working of the firearms under all conditions in contrast with cartridge cases of brass on the surface of which on storing in a moist atmosphere verdigris and the like is formed, so causing their diameter to become enlarged over the admissible tolerance on account of the larger volume of the verdigris so that the charging of the firearm is impeded or other disturbances may take place.
  • the use of aluminum for cartridge cases means a considerable saving in weight.
  • oxidic layer of separation on aluminum c-artridge cases there may be used layers composed of other material, such as a fluoride or phosphate or the like layer.
  • a cartridge case comprising an aluminum containing case adapted for use in a gun barrel and an aluminum oxide layer thereon, said layer produced by electrolytic oxidation of said aluminum cartridge case, said layer being integral with said case,fwhereby fusion of said case and welding to said gun barrel in the firing of cartridges is prevented even under conditions of high temperatures;
  • a cartridge case comprising an aluminum containing case adapted for use in a gun barrel and an aluminum oxide layer thereon, said layer being produced by electrolytic oxidation of said aluminum cartridge case by means of a sulphuric acid bath, said layer being integral with said case, whereby fusion of said case and welding to said gun barrel in the ring of cartridges is prevented under conditions of high temperatures.
  • a cartridge case comprising an aluminum containing case adapted for use in a gun barrel and a layer thereon, said layer selected from the group of materials consisting of articially produced aluminum oxide, aluminum uoride and aluminum phosphate, said layer being integral with said case, whereby fustion of said case and Welding to said gun barrel in the firing of cartridges is prevented even under conditions of high temperatures, the thickness of said oxide layer being considerably greater than that formed by natural atmospheric oxidation of aluminum.
  • a cartridge case comprising a case consisting of an aluminum alloy adapted for use in'a gun barrel, and a layer thereon, selected fromY the group of materials consisting of artificially produced aluminum oxide, aluminum iiuoride and aluminum phosphate, said layer being integral with said case, whereby fusion of said case and welding to said gun "barrel in the firing of cartridges is prevented even under conditions of high temperatures, the thickness of said oxide layer being considerably greater than that formed by natural atmospheric oxidation of aluminum.
  • a cartridge case comprising a case consisting essentially of aluminum and adapted for use in a gun barrel and a firmly adherent surface layer of an aluminum compound thereon, said surface layer excluding a. welding of the cartridge case and the barrel wall of firearms, having a high melting point and being artificially produced from the material of the cartridge case by 'reaction with suitable substances to provide a layer taken from the class consisting of oxide, fluoride and phosphate.
  • a cartridge case comprising a case consisting essentially of aluminum and adapted for use in a gun barrel and a rmly adherent surface layer of an aluminum compound thereon, said surface layer excluding a welding of the cartridge case and the barrel wall of firearms, having a high melting point, comprising aluminum oxide and being artificially produced from the material of the cartridge case by reaction with suitable substances to provide a layer taken from the class consisting of oxide, iiuoride and phosphate.
  • a cartridge case adapted for use in a gun f barrel comprising an aluminum containing case and a layer containing aluminum oxide thereon, said layer being artificially produced from the material of the cartridge case, being integral therewith and having a thickness of 0.1 to 30 a, whereby fusion of said case and welding to said gun barrel in the firing of cartridges is prevented even under conditions of high temperatures, the thickness of said oxide layer being considerably greater than that formed by natural atmospheric oxidation of aluminum.l

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Casings For Electric Apparatus (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
US94055A 1935-08-03 1936-08-03 Cartridge case provided with a nonmetallic surface Expired - Lifetime US2196018A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2196018X 1935-08-03

Publications (1)

Publication Number Publication Date
US2196018A true US2196018A (en) 1940-04-02

Family

ID=32070936

Family Applications (1)

Application Number Title Priority Date Filing Date
US94055A Expired - Lifetime US2196018A (en) 1935-08-03 1936-08-03 Cartridge case provided with a nonmetallic surface

Country Status (4)

Country Link
US (1) US2196018A (en, 2012)
BE (1) BE416799A (en, 2012)
FR (1) FR808971A (en, 2012)
GB (1) GB466320A (en, 2012)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495941A (en) * 1946-12-18 1950-01-31 Reynolds Metals Co Electroplating copper on aluminum
US2926612A (en) * 1955-01-13 1960-03-01 Olin Mathieson Projectile
US3026802A (en) * 1958-12-16 1962-03-27 Fredrick R Barnet Plastics lightweight cartridge case
US3048105A (en) * 1957-09-03 1962-08-07 Press & Stanzwerk A G Aluminum alloy cartridge case
US3061447A (en) * 1958-05-24 1962-10-30 Wilhelm Schmidding Method of producing a corrosion resistant internal surface on a container made of light metal
US3165201A (en) * 1963-04-26 1965-01-12 Westinghouse Electric Corp Disposable element reflector pan
US3494840A (en) * 1964-06-30 1970-02-10 Reynolds Metals Co Method of increasing the compressive strength of aluminum honeycomb core
US3830157A (en) * 1972-10-31 1974-08-20 Us Army Cartridge case
USRE31901E (en) * 1974-04-23 1985-05-28 Pilot Man-Nen-Hitsu Kabushiki Kaisha Continuous electrolytical treatment of aluminum or its alloys
WO2004015359A1 (en) * 2002-08-08 2004-02-19 Bofors Defence Ab Insulated cartridge case and ammunition, method for manufacturing such cases and ammunition, and use of such cases and ammunition in various different weapon systems.
USD703016S1 (en) * 2013-04-18 2014-04-22 Elijah Crane Bottle opener
USD736046S1 (en) * 2014-12-29 2015-08-11 Bottle Breacher LLC Bottle opener
USD739195S1 (en) * 2014-08-22 2015-09-22 Top Brass LLC Bottle opener
WO2016005877A1 (en) 2014-07-11 2016-01-14 Jh Casings As Heat insulating coating for aluminium cartridge casings for hand guns
US20160221813A1 (en) * 2013-07-03 2016-08-04 Elijah Crane Cartridge bottle opener apparatus and related methods
USD838563S1 (en) * 2017-11-07 2019-01-22 Thomas William Shalhoub Bottle opener

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740252C (de) * 1937-09-04 1943-10-15 Trierer Walzwerk Ag Behandlung von mit Aluminium ueberzogenen Einpackblechen aus Stahl
US2919647A (en) * 1953-05-25 1960-01-05 Olin Mathieson Ammunition

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495941A (en) * 1946-12-18 1950-01-31 Reynolds Metals Co Electroplating copper on aluminum
US2926612A (en) * 1955-01-13 1960-03-01 Olin Mathieson Projectile
US3048105A (en) * 1957-09-03 1962-08-07 Press & Stanzwerk A G Aluminum alloy cartridge case
US3061447A (en) * 1958-05-24 1962-10-30 Wilhelm Schmidding Method of producing a corrosion resistant internal surface on a container made of light metal
US3026802A (en) * 1958-12-16 1962-03-27 Fredrick R Barnet Plastics lightweight cartridge case
US3165201A (en) * 1963-04-26 1965-01-12 Westinghouse Electric Corp Disposable element reflector pan
US3494840A (en) * 1964-06-30 1970-02-10 Reynolds Metals Co Method of increasing the compressive strength of aluminum honeycomb core
US3830157A (en) * 1972-10-31 1974-08-20 Us Army Cartridge case
USRE31901E (en) * 1974-04-23 1985-05-28 Pilot Man-Nen-Hitsu Kabushiki Kaisha Continuous electrolytical treatment of aluminum or its alloys
US20060096489A1 (en) * 2002-08-08 2006-05-11 Ola Stark Insulated cartridge case and ammunition, method for manufacturing such cases and ammunition, and use of such cases and ammunition in various different weapon systems
WO2004015359A1 (en) * 2002-08-08 2004-02-19 Bofors Defence Ab Insulated cartridge case and ammunition, method for manufacturing such cases and ammunition, and use of such cases and ammunition in various different weapon systems.
US7581499B2 (en) 2002-08-08 2009-09-01 Bofors Defence Ab Insulated cartridge case and ammunition, method for manufacturing such cases and ammunition, and use of such cases and ammunition in various different weapon systems
USD703016S1 (en) * 2013-04-18 2014-04-22 Elijah Crane Bottle opener
US20160221813A1 (en) * 2013-07-03 2016-08-04 Elijah Crane Cartridge bottle opener apparatus and related methods
WO2016005877A1 (en) 2014-07-11 2016-01-14 Jh Casings As Heat insulating coating for aluminium cartridge casings for hand guns
US10359261B2 (en) 2014-07-11 2019-07-23 Jh Casings As Heat insulating coating for aluminium cartridge casings for hand guns
EP3550254A1 (en) 2014-07-11 2019-10-09 JH Casings AS Heat insulating coating for aluminium cartridge casings for hand guns
USD739195S1 (en) * 2014-08-22 2015-09-22 Top Brass LLC Bottle opener
USD736046S1 (en) * 2014-12-29 2015-08-11 Bottle Breacher LLC Bottle opener
USD838563S1 (en) * 2017-11-07 2019-01-22 Thomas William Shalhoub Bottle opener

Also Published As

Publication number Publication date
FR808971A (fr) 1937-02-19
BE416799A (en, 2012)
GB466320A (en) 1937-05-26

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