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US1974270A - Cartridge shell - Google Patents

Cartridge shell Download PDF

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Publication number
US1974270A
US1974270A US659115A US65911533A US1974270A US 1974270 A US1974270 A US 1974270A US 659115 A US659115 A US 659115A US 65911533 A US65911533 A US 65911533A US 1974270 A US1974270 A US 1974270A
Authority
US
United States
Prior art keywords
shell
cartridge shell
cartridge
base
fold
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
US659115A
Other languages
English (en)
Inventor
Guignet Leon Auguste
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.)
Compagnie Royale Asturienne des Mines
Original Assignee
Compagnie Royale Asturienne des Mines
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 Compagnie Royale Asturienne des Mines filed Critical Compagnie Royale Asturienne des Mines
Priority to US688760A priority Critical patent/US2003438A/en
Application granted granted Critical
Publication of US1974270A publication Critical patent/US1974270A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/54—Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants
    • 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
    • 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
    • F42B5/32—Cartridge cases for rim fire

Definitions

  • This invention relates to drawn metal cartridge shells having a double circumferential fold between the base and the tubular part of the shell.
  • Metal shells in accordance with the present ine vention are especially suited for sporting cartridges because they are moisture proof and are therefore preferable to the cardboard shells used.
  • I-Ieretofore the crowns of such double folds were tightly closed so that 10.' adjacent layers of the fold touch each other over substantially their entire length. While such folds were intended to strengthen the base, they were not permanently gas tight as the material in the crowns of the fold was over-strained during '1'5- the manufacture to a point where incipient cracks developed therein which opened up when the cartridge was fired, or the material was weakened to a degree that it could not withstand the firing pressure.
  • the present invention has for its object to provide a cartridge shell which avoids the aforementioned disadvantages.
  • Another object is to provide a cartridge shell which does not crack upon iiring and which therefore can be employed with safety.
  • Another object is to provide a cartridge shell of relatively light weight in relation to the pressure which is developed therein upon firing.
  • Another object is to provide a cartridge shell with a double fold between the rim of the base and the tubular part which fold forms an elastic spring-like connection between the parts capable of yielding upon ring and thus reduces the strain upon the shell.
  • Another object is to provide a cartridge shell with a double fold in which the maximum stresses to which the material is subjected during manufacture and during subsequent firing are relatively low.
  • Another object is to provide a cartridge shell of a material which is readily formed, which is inexpensive and which is especially suited for the purpose.
  • Figures 1 and 2 are longitudinal cross sections of a cartridge shell during different stages of the manufacturing process, while Fig. 3 is a longitudinal section of the lower part of the iinished shell.
  • the shell which has a tubular part 1 and a base 2 is first cold drawnin the usual manner, the bottom having a constant 55. thickness and the wall of the tubular part being slightly tapered as shown in Fig. 1. It will be understood that the proportions shown in Figs. 1 and 2 are somewhat exaggerated. As an example the thickness of the top end of the tubular part in the stage shown in Fig. 1 may be .23 mm., while 6o the thickness of the tubular part near the base may be .35 mm. and the constant thickness of the base .7 mm.
  • the shell blank By subjecting the shell blank to a further operation, it attains the form shown in Fig. 2 where-V 65 in the length of the tube is increased and the bottom is approximately hernispherical. Thereafter the blank is put into another tool which gives it its nal shape as illustrated in Fig. 3 and in which the double fold between the wall l and the rim 3 of the base 2 is designated by the numerals 4 and 5. It will be observed that the thickness of the wall in the rst bend 4 near the rim 3 is slightly tapered and that the crowns 0i the fold are given radii which are large in relation to the thickness of the metal and the sides thereof are oblique to the base.
  • the cross section of the entire double fold represents a substantially continuous curve as distinguished from a bend consisting of a combination of curves and straight lines.
  • a metal cartridge shell having between its base and its tubular part two resilient folds which are reversed relative to each other, said folds including arcs of more than a' half-circle and having relatively large inside radii.
  • a metal cartridge shell provided with a resilient double fold between the base and the tu- Y buiar part of the shell, the crowns of said fold having relatively large inside radii, said shell consisting of an alloy of zinc and copper containing approximately .5% by weightY of Copper.
  • a metal cartridge shell having between its base and its tubular part two resilient folds which are reversed relative to each other, said folds including arcs of more than a half-circle and having relatively large inside radii, the

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
US659115A 1933-01-18 1933-03-01 Cartridge shell Expired - Lifetime US1974270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US688760A US2003438A (en) 1933-03-01 1933-09-09 Tool for making cartridge shells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC0047412 1933-01-18

Publications (1)

Publication Number Publication Date
US1974270A true US1974270A (en) 1934-09-18

Family

ID=7843825

Family Applications (1)

Application Number Title Priority Date Filing Date
US659115A Expired - Lifetime US1974270A (en) 1933-01-18 1933-03-01 Cartridge shell

Country Status (6)

Country Link
US (1) US1974270A (fi)
BE (1) BE394067A (fi)
DE (1) DE594607C (fi)
ES (1) ES129595A1 (fi)
FR (1) FR751495A (fi)
NL (1) NL38479C (fi)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522208A (en) * 1946-06-26 1950-09-12 Remington Arms Co Inc Ammunition
US3431853A (en) * 1966-01-06 1969-03-11 Albert C Warner Defensive weapon and cartridge therefor
US3656434A (en) * 1969-05-26 1972-04-18 Remington Arms Co Inc Shotgun shell with metal cap
US4846069A (en) * 1988-02-10 1989-07-11 Honeywell Inc. Cased telescoped ammunition having features augmenting cartridge case end cap retention and retraction
US4907510A (en) * 1988-02-10 1990-03-13 Honeywell Inc. Cased telescoped ammunition having features augmenting cartridge case dimensional recovery by center sleeve
US4938145A (en) * 1988-02-10 1990-07-03 Honeywell Inc. Cased telescoped ammunition having features augmenting cartridge case dimensional recovery by case skin tube
WO2001022026A2 (en) * 1999-09-21 2001-03-29 Olin Corporation Industrial ammunition
US6779461B1 (en) 1999-09-21 2004-08-24 Olin Corporation Industrial ammunition

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL122769C (fi) * 1960-05-09

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2522208A (en) * 1946-06-26 1950-09-12 Remington Arms Co Inc Ammunition
US3431853A (en) * 1966-01-06 1969-03-11 Albert C Warner Defensive weapon and cartridge therefor
US3656434A (en) * 1969-05-26 1972-04-18 Remington Arms Co Inc Shotgun shell with metal cap
US4846069A (en) * 1988-02-10 1989-07-11 Honeywell Inc. Cased telescoped ammunition having features augmenting cartridge case end cap retention and retraction
US4907510A (en) * 1988-02-10 1990-03-13 Honeywell Inc. Cased telescoped ammunition having features augmenting cartridge case dimensional recovery by center sleeve
US4938145A (en) * 1988-02-10 1990-07-03 Honeywell Inc. Cased telescoped ammunition having features augmenting cartridge case dimensional recovery by case skin tube
WO2001022026A2 (en) * 1999-09-21 2001-03-29 Olin Corporation Industrial ammunition
WO2001022026A3 (en) * 1999-09-21 2001-11-08 Olin Corp Industrial ammunition
US6779461B1 (en) 1999-09-21 2004-08-24 Olin Corporation Industrial ammunition
US20050115444A1 (en) * 1999-09-21 2005-06-02 Olin Corporation, A Company Of The State Of Illinois. Industrial ammunition
US20050115389A1 (en) * 1999-09-21 2005-06-02 Olin Corporation, A Company Of The State Of Illinois. Industrial ammunition
US7066092B2 (en) 1999-09-21 2006-06-27 Olin Corporation Industrial ammunition
US7069863B2 (en) 1999-09-21 2006-07-04 Olin Corporation Industrial ammunition
US20070017405A1 (en) * 1999-09-21 2007-01-25 Olson Douglas D Industrial ammunition
US7252038B2 (en) 1999-09-21 2007-08-07 Olin Corporation Industrial ammunition
US7921779B1 (en) 1999-09-21 2011-04-12 Olin Corporation Industrial ammunition

Also Published As

Publication number Publication date
BE394067A (fi) 1933-03-31
DE594607C (de) 1934-03-19
ES129595A1 (es) 1933-05-01
FR751495A (fr) 1933-09-04
NL38479C (fi) 1936-07-15

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