US2620581A - Removable magazine extension - Google Patents

Removable magazine extension Download PDF

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Publication number
US2620581A
US2620581A US95392A US9539249A US2620581A US 2620581 A US2620581 A US 2620581A US 95392 A US95392 A US 95392A US 9539249 A US9539249 A US 9539249A US 2620581 A US2620581 A US 2620581A
Authority
US
United States
Prior art keywords
extension
spring
magazine
tubular
cartridges
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
US95392A
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English (en)
Inventor
Fiorini Sestilio
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.)
Societa Italiana Ernesto Breda per Construzioni Meccaniche
Original Assignee
It Ernesto Breda Per Constr Me
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 It Ernesto Breda Per Constr Me filed Critical It Ernesto Breda Per Constr Me
Application granted granted Critical
Publication of US2620581A publication Critical patent/US2620581A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/61—Magazines
    • F41A9/64—Magazines for unbelted ammunition
    • F41A9/72—Tubular magazines, i.e. magazines containing the ammunition in lengthwise tandem sequence

Definitions

  • This invention relates toautomatic guns, principally automatic shotuns, in which cartridges are housed in end-to-end relationship in a tubular magazine to which theyare entered at the front end, springmeans being provided between a closure cap 'for. the said front end .of -.the. magazine and the foremost cartridge,
  • a disadvantage of this known device is that, if it is to be carried out on the shooting range, or whilst hunting, etc., it is necessary for the marksman to carry around with him both the tubular extension and the longer spring, and also to take care of the normal spring when it is not in use.
  • the tubular extension carries within itself, in a captive manner, spring means which may re-act between the front of the extension and the foremost end of the normal spring, in such manner that the combined springs are capable of a total extension and compression at least equal to the maximum displacement required for the foremost cartridge.
  • the spring means in the tubular extension will include a piston-like thrust member to lie between the two springs when the device is in position on the'gun, and transmit the thrust of the one spring to the other.
  • the marksman needs to carry around the one element, namely the self-contained attachment; and he does not have to take care of that spring during the time that the extension is in use.
  • the extension will have a permanently closed front end, and at its rear end will have resilient and/or removable means for allowing admission of the spring.
  • the extension will have a removable front end or stopper, in which cases the means at the rear end, for holding the spring Qaptive in the extensiommay be. f a r gid, removable character.
  • vFig. 1 is a send-diagrammatic sectional elevation of therelevant portion of an automatic gun of the :kind referred to with the normal closure capin position.
  • Fig, 2 is a sectional elevation of one example of 'a self-contained magazine extension according to the invention
  • Fig. 3 is a similar view to Fig. 1, with the extension shown in Fig. 2, fitted on to the gun; and
  • Fig. 4 is a view similar to Fig. 2, of another example of the improved magazine extension.
  • Fig. 1 the front end of the tubular magazine, which lies under the gun, is fitted with a screw-0n cap I, between which and the foremost cartridge 3 is the compression spring 2, this spring pushing the cartridges towards the feed mechanism (not shown).
  • the extension 6 has an enlargement at the rear end, screw-threaded internally to screw on to the open end of the magazine in place of the cap I, and has an integral closed end at the front.
  • a compression spring 5 and a flanged disc or piston-like thrust member 6 the spring 5 reacting between the opposed faces of the front end of the extension and the disc.
  • a resilient ring 1 of circular crosssection is seated in an annular groove, of semicircular cross-section, in the inner face of the extension, where the said enlargement begins.
  • the said ring I prevents the spring 5 from escaping out of the extension, and although engaged inside the tubular member 4 (see Fi 2), it can easily be taken out, so as to enable the introduction of the said spring 5 and the disc 6.
  • the tubular member 4 is screwed onto the magazine of the gun (see Fig. 3)
  • the foremost cartridge 3, and the normal spring 2 come partly to occupy the inside of the member 4, thus compressing the spring 5 towards the bottom of the said member 4 by effect of the pressure exerted by the spring 2 on the disc 6.
  • Figs. 2 and 3 may be varied without departing from the scope of the present invention.
  • the elastic ring 1 and the corresponding groove in the extension with an inward projection 8 integral with the wall of the tubular member, equally apt to retain the disc 6 and spring 5 within the tubular member and to allow for the cartridge 3 and spring 2 to extend Within said tubular member.
  • the member 4 will not have a solid outer end but a removablyconnected end 9, so as to allow for introducing the spring 5 and the disc 6 at the outer end of the extension.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Toys (AREA)
  • Electron Beam Exposure (AREA)
US95392A 1948-05-28 1949-05-25 Removable magazine extension Expired - Lifetime US2620581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT658133X 1948-05-28

Publications (1)

Publication Number Publication Date
US2620581A true US2620581A (en) 1952-12-09

Family

ID=11298182

Family Applications (1)

Application Number Title Priority Date Filing Date
US95392A Expired - Lifetime US2620581A (en) 1948-05-28 1949-05-25 Removable magazine extension

Country Status (5)

Country Link
US (1) US2620581A (ru)
BE (1) BE489159A (ru)
DE (1) DE939434C (ru)
FR (1) FR986304A (ru)
GB (1) GB658133A (ru)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602449A (en) * 1985-09-24 1986-07-29 Holmes Jerry B Combination screw-in choke holder and plug device
US5613316A (en) * 1995-03-06 1997-03-25 Hightower; Floyd L. Shotgun magazine sling attaching device
US20050217161A1 (en) * 2004-03-31 2005-10-06 Ra Brands, L.L.C. Barrel accessory rail system
US20070199225A1 (en) * 2006-02-08 2007-08-30 Haugen Michael D Accessory Rail Assembly for Firearms
US20100277896A1 (en) * 2008-08-27 2010-11-04 Jason Kenneth Oehlkers Magazine tube lighting system
US20120325079A1 (en) * 2011-06-23 2012-12-27 Fabbrica D'armi Pietro Beretta S.P.A. Sports or Defence Rifle With Container Pipe for Cartridges
US20140020275A1 (en) * 2012-01-24 2014-01-23 Steven Corso Compact firearm spring arrangement
US8726557B2 (en) 2009-06-22 2014-05-20 Ra Brands, L.L.C. Hand guard attachment system for firearms
USD952094S1 (en) * 2021-01-22 2022-05-17 Rhino Chokes & Gun Works, LLC Magazine cap with sling loop
USD952095S1 (en) * 2021-01-22 2022-05-17 Rhino Chokes & Gun Works, LLC Magazine cap
US20220178635A1 (en) * 2019-10-28 2022-06-09 Bahtiyar Tasyagan Capacity increasing magazine extension in semi-automatic and pump-action hunting rifles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH556589A (de) * 1972-09-06 1974-11-29 Idn Invention Dev Novelties Behaelter zur aufnahme einer kassette mit einem bandfoermigen aufzeichnungstraeger.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1039182A (en) * 1912-06-15 1912-09-24 Bert Steele Parsons Magazine-firearm.
US1702221A (en) * 1928-01-24 1929-02-12 Parsons Bert Steele Firearm
US1855404A (en) * 1931-01-27 1932-04-26 Remington Arms Co Inc Firearm
US2026252A (en) * 1935-02-09 1935-12-31 Browning Arms Co Shotgun magazine
US2210983A (en) * 1937-04-13 1940-08-13 John W Macclatchie Method and means for perforating well casings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1039182A (en) * 1912-06-15 1912-09-24 Bert Steele Parsons Magazine-firearm.
US1702221A (en) * 1928-01-24 1929-02-12 Parsons Bert Steele Firearm
US1855404A (en) * 1931-01-27 1932-04-26 Remington Arms Co Inc Firearm
US2026252A (en) * 1935-02-09 1935-12-31 Browning Arms Co Shotgun magazine
US2210983A (en) * 1937-04-13 1940-08-13 John W Macclatchie Method and means for perforating well casings

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4602449A (en) * 1985-09-24 1986-07-29 Holmes Jerry B Combination screw-in choke holder and plug device
US5613316A (en) * 1995-03-06 1997-03-25 Hightower; Floyd L. Shotgun magazine sling attaching device
US20050217161A1 (en) * 2004-03-31 2005-10-06 Ra Brands, L.L.C. Barrel accessory rail system
US20070199225A1 (en) * 2006-02-08 2007-08-30 Haugen Michael D Accessory Rail Assembly for Firearms
US20100277896A1 (en) * 2008-08-27 2010-11-04 Jason Kenneth Oehlkers Magazine tube lighting system
US8726557B2 (en) 2009-06-22 2014-05-20 Ra Brands, L.L.C. Hand guard attachment system for firearms
US20120325079A1 (en) * 2011-06-23 2012-12-27 Fabbrica D'armi Pietro Beretta S.P.A. Sports or Defence Rifle With Container Pipe for Cartridges
US20140020275A1 (en) * 2012-01-24 2014-01-23 Steven Corso Compact firearm spring arrangement
US8819977B2 (en) * 2012-01-24 2014-09-02 Steven Corso Compact firearm spring arrangement
US20220178635A1 (en) * 2019-10-28 2022-06-09 Bahtiyar Tasyagan Capacity increasing magazine extension in semi-automatic and pump-action hunting rifles
US11644258B2 (en) * 2019-10-28 2023-05-09 Bahtiyar Tasyagan Capacity increasing magazine extension in semi-automatic and pump-action hunting rifles
USD952094S1 (en) * 2021-01-22 2022-05-17 Rhino Chokes & Gun Works, LLC Magazine cap with sling loop
USD952095S1 (en) * 2021-01-22 2022-05-17 Rhino Chokes & Gun Works, LLC Magazine cap

Also Published As

Publication number Publication date
DE939434C (de) 1956-02-23
FR986304A (fr) 1951-07-30
GB658133A (en) 1951-10-03
BE489159A (ru)

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