US3229584A - Automatic firearm feed mechanisms - Google Patents

Automatic firearm feed mechanisms Download PDF

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Publication number
US3229584A
US3229584A US283330A US28333063A US3229584A US 3229584 A US3229584 A US 3229584A US 283330 A US283330 A US 283330A US 28333063 A US28333063 A US 28333063A US 3229584 A US3229584 A US 3229584A
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US
United States
Prior art keywords
clip
belt
cartridge
cartridges
rotor
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
US283330A
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English (en)
Inventor
Zehuder Robert
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.)
Brevets Aero Mecaniques SA
Original Assignee
Brevets Aero Mecaniques SA
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 LU41779A external-priority patent/LU43779A1/xx
Application filed by Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
Application granted granted Critical
Publication of US3229584A publication Critical patent/US3229584A/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
    • F41A9/29—Feeding of belted ammunition
    • F41A9/30—Sprocket-type belt transporters
    • 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
    • F41A9/29—Feeding of belted ammunition
    • F41A9/30—Sprocket-type belt transporters
    • F41A9/31—Sprocket-type belt transporters with cartridge stripping means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/08—Cartridge belts

Definitions

  • the present invention relates to feed mechanisms of the rotor type for automatic firearms to which ammunition is fed in the form of an ammunition belt made of cartridges connected by means of links.
  • the invention is more especially, but not exclusively, concerned with feed mechanisms of this type for guns of small caliber, for instance of a caliber ranging from 20 to 50 millimeters.
  • belt feed mechanism of the rotor type designates, in a firearm to which the cartridges are supplied through an ammunition belt (where two successive cartridges are connected together by means of a link comprising clips which resiliently surround said cartridges), a mechanism comprising a rotating structure, called rotor, provided with teeth engaging between the cartridges of the belt and rotated in any suitable manner (for instance under the action of means actuated by powder gases tapped from the gun barrel, or by a movable portion of the gun, or again by a distinct motor) so as to cause the cartridges of the belt to pass successively through an extraction position where they are stripped from the belt links and from which suitable guiding means respectively lead the freed cartridges toward the firearm, through a feed passage, and the belt links stripped from the cartridges toward a link chute.
  • composite link designates the assembly of tWo complementary link elements, each consisting of a simple or multiple (double) clip, assembled together, in tandem-like fashion, either rigidly or with the possibility of limited relative movement, each clip resiliently surrounding a cartridge over at least 180 of its periphery.
  • Every cartridge of the'ammunition belt is thus caught, over a portion of its length, by one clip of one composite link, and, over at least one other portion of its length, by the other clip of the next link, release of a cartridge from said clips taking place by a relative transverse displacement of said cartridge.
  • the front link element (clip) of a link is that extending in the direction in which the cartridge belt is moving, the other element being the rear link element, or clip.
  • the middle portion of a link is that through which the front and rear link elements are connected together.
  • every cartridge belonging to an ammunition belt is held by the rear clip of a link and the front clip of the next link.
  • the feed mechanism which comprises stripping means capable, when an ammunition belt of the first kind is used, of cooperating with the front clip of a link through at least one abutment member capable of holding said clip during the stripping of the cartridge held by it, is characterized by the provision, on the one hand, of means (which may consist of, or belong to, said abutment member) capable, when an ammunition belt of the other kind is used, of forming an abutment for the link the rear clip of which surrounds the cartridge reaching said stripping means and, on the other hand, of supplementary abutment means for preventing any substantial rotation of said rear clip about the axis of the cartridge during the stripping of said cartridge produced by the movement of the rotor.
  • means which may consist of, or belong to, said abutment member
  • FIG. 1 is a perspective view of a composite link for making an ammunition belt for use in the belt feed mechanism according to the present invention
  • FIG. 2 similarly shows two such links assembled together
  • FIGS. 3 and 4 are cross sectional views, respectively before the stripping of a cartridge and during this stripping, of a feed mechanism made according to the invention and fed with a belt of the first kind above mentioned made of link elements as shown by FIGS. 1 and 2;
  • FIGS. 5 and 6 are views similar to FIGS. 3 and 4 respectively, but wherein the ammunition belt is of the other kind;
  • FIG. 5a is a detail view showing a detail modification.
  • every link comprises two portions, one consisting of a single clip 1 and the other consisting of a double clip 2 the respective ends 4a of which are connected together by an arm 4, these two link portions being interconnected through a loop 3 carried by the first portion 1 and engaging the arm 4 of the second portion.
  • the clip 1 of every link is adapted to fit between the two clip portions 2 of the next link and it is provided with two raised side projections 1a adapted to bear on said clip portions 2.
  • the feed mechanism comprises a spindle 5 substantially parallel to the direction of firing of the gun and journalled in a casing, for instance between two transverse walls such as 6 belonging to said casing.
  • said members 12 being upported by two levers 13 pivoted about a common axis 14 and being subjected to the action of resilient antagonistic means '(not shown) against the action of which said levers can swing through a limited arc in the direction toward which the links are moving.
  • the stripping means of the feed mechanism are arranged in such manner that, when use is made of an ammunition belt of the second kind (case of FIGS. 5 and 6), the portion 4a of a composite link the rear double clip 2 of which holds the cartridge 8a which reaches the stripping means bears against an abutment piece located toward the inlet of evacuation chute 10, said abutment piece advantageously consisting, as shown, of the abutments 12 above referred to, and supplementary means are provided to prevent any substantial rotation of said rear double clip 2 about the axis of cartridge 8a while said cartridge is being stripped from the ammunition belt by the wheels 7 of the rotor.
  • the rear end A of the rear double clip 2 of a link belonging to an ammunition belt of the second kind happens to be the front end of said clip when said link belongs to a belt of the first kind (case of FIGS. 3 and 4).
  • the abutment lugs 15 could not extend sufficiently toward the inside of the stripping meansto form an abutment for said rear end A of the rear double clip 2 during the whole of the stripping step, it would be possible, according to a modification illustrated by FIG. 5a, to mount said lugs pivotally (Within limits) about an axis 16 and to subject them to the action of resilient means, such for instance as a spring 17, tending to bring them back toward the inlet of the stripping means, the abutment lugs 15 accompanying, so to speak, the rear end A of the rear double 'clip 2 during the cartridge stripping period.
  • resilient means such for instance as a spring 17
  • the supplementary abutment means intended to prevent the rotation of the double clip 2 about the axis of cartridge 8a consist of a surface 18 carried by, or consisting of, the upper face 10a of evacuation chute 10. Said inclined surface 18 is disposed in such manner as to constitute, during the stripping of cartridge 8a, an abutment for the front single clip 1 of the composite link, the rear double clip of which holds cartridge 8a.
  • the whole of the composite link that is considered is bearing, through its portions 4a, against members 12 and, through the back face of its front single clip, against surface 18, thus preventing, as shown by FIG. 6, any substantial rotation of the double clip 2 about the axis of cartridge 8a and thus permitting said cartridge to be stripped from said clip.
  • this last described solution is applied in combination with the first one, that is to say with the provision of abutment lugs 15, especially when said lugs are fixed in position.
  • the composite link, the rear double clip 2 of which holds the cartridge 8a to be stripped bears First, as FIG. 5, through its portions 4 a, against abutments 12 and, through the rear end A of its rear double clip 2, against abutment lugs 15,
  • a feed mechanism according to the invention may use either of these two kinds of belts.
  • a feed mechanism which comprises, in combination, an ammunition belt consisting of a plurality of links and longitudinally extending cartridges each for pivotally connecting two successive links, each of said links comprising two open clips for two successive cartridges, respectively, said clips being offset longitudinally with respect to each other, a casing, an intermittently rotating rotor journalled in said casing about a longitudinal axis and having arms capable of engaging between the cartridges of said belt to propel it laterally, guide means for the cartridges of said belt, extending along cylindrical surfaces coaxial with said rotor, for preventing outward radial movement of said cartridges, a member resiliently movable in said casing away from and toward said rotor adapted to cooperate with the first cartridge of said belt to be pushed by it away from said rotor, first abutment means carried by said member, said abutment means being adapted to cooperate with the tip of one clip of each length to strip said length away from the cartridge on which it is fitted when said belt is disposed with said tip at the front of
  • a feed mechanism which comprises, in combination, an ammunition belt consisting of a plurality of links and longitudinally extending cartridges each for pivotally connecting two successive links, each of said links comprising two open clips for two successive cartridges, respectively, said clips being offset longitudinally with respect to each other, a casing, an intermittently rotating rotor journalled in said casing about a longitudinal axis and having arms capable of engaging between the cartridges of said belt to propel it laterally, guide means for the cartridges of said belt, extending along cylindrical surfaces coaxial with said rotor, for preventing outward radial movement of said cartridges, a member resiliently movable in said casing away from and towards said rotor adapted to cooperate with the first cartridge of said belt to be pushed by it away from said rotor, first abutment means carried by said member, said abutment means being adapted to cooperate with the tip of one clip of each link to strip said link away from the cartridge on which it is fitted when said belt is disposed with said tip at the front of

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Specific Conveyance Elements (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Buckles (AREA)
US283330A 1951-03-27 1963-05-27 Automatic firearm feed mechanisms Expired - Lifetime US3229584A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU712890X 1951-03-27
LU41779A LU43779A1 (xx) 1961-09-28 1963-05-20

Publications (1)

Publication Number Publication Date
US3229584A true US3229584A (en) 1966-01-18

Family

ID=31190433

Family Applications (1)

Application Number Title Priority Date Filing Date
US283330A Expired - Lifetime US3229584A (en) 1951-03-27 1963-05-27 Automatic firearm feed mechanisms

Country Status (8)

Country Link
US (1) US3229584A (xx)
BE (1) BE632336A (xx)
CH (1) CH399253A (xx)
DE (2) DE1022937B (xx)
FR (1) FR1357412A (xx)
GB (2) GB712890A (xx)
LU (1) LU41779A1 (xx)
NL (1) NL293088A (xx)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367236A (en) * 1965-05-18 1968-02-06 Rheinmetall Gmbh Rotary ammunition belt feeder having a plurality of belt feed apertures
US4385696A (en) * 1981-08-21 1983-05-31 Wayne H. Coloney Company, Inc. Linked container article carrier
US4506588A (en) * 1982-12-13 1985-03-26 Western Design Corp. Ammunition handling system and method
US4658701A (en) * 1983-04-13 1987-04-21 Hughes Helicopters, Inc. Side stripping mechanism for linked ammunition
US4724739A (en) * 1981-08-17 1988-02-16 Diehl Gmbh & Co. Arrangement for the infeed and withdrawal of caseless ammunition
US20090249947A1 (en) * 2008-04-02 2009-10-08 Nexter Systems Link separation device for an ammunition belt
US20100319521A1 (en) * 2009-06-23 2010-12-23 Glen Dick Link chute ejection adapter
US9470496B2 (en) * 2015-01-13 2016-10-18 Machinegunarmory, Llc Disintegrating ammunition belt link
US9506705B1 (en) * 2015-04-21 2016-11-29 Joseph H. Fleischli Feeder delinker
US9612081B2 (en) 2014-07-23 2017-04-04 Maruzen Company Limited Cartridge for air gun

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2339311C3 (de) * 1973-08-03 1982-02-04 Rheinmetall GmbH, 4000 Düsseldorf Gurtzuführer für automatische Waffen
FR3010179B1 (fr) 2013-08-28 2017-10-20 Nexter Systems Element de couloir de guidage de bande de munitions et couloir de guidage forme de tels elements

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821888A (en) * 1949-11-18 1958-02-04 Maillard Bernard Belt feed mechanisms for automatic firearms
US2993414A (en) * 1946-06-05 1961-07-25 United Shoe Machinery Corp Ammunition feed mechanism

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR785688A (fr) * 1934-02-19 1935-08-16 Metallurg Bresciana Gia Tempin Ruban métallique porte-cartouches pour armes automatiques
US2481726A (en) * 1944-10-11 1949-09-13 Bristol Acroplane Company Ltd Ammunition-belt feed mechanism for automatic firearms
US2590214A (en) * 1946-04-12 1952-03-25 Autoyre Co Inc Feeding mechanism for automatic guns
US2501143A (en) * 1946-07-17 1950-03-21 Autoyre Company Cartridge feeding mechanism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2993414A (en) * 1946-06-05 1961-07-25 United Shoe Machinery Corp Ammunition feed mechanism
US2821888A (en) * 1949-11-18 1958-02-04 Maillard Bernard Belt feed mechanisms for automatic firearms

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367236A (en) * 1965-05-18 1968-02-06 Rheinmetall Gmbh Rotary ammunition belt feeder having a plurality of belt feed apertures
US4724739A (en) * 1981-08-17 1988-02-16 Diehl Gmbh & Co. Arrangement for the infeed and withdrawal of caseless ammunition
US4385696A (en) * 1981-08-21 1983-05-31 Wayne H. Coloney Company, Inc. Linked container article carrier
US4506588A (en) * 1982-12-13 1985-03-26 Western Design Corp. Ammunition handling system and method
US4658701A (en) * 1983-04-13 1987-04-21 Hughes Helicopters, Inc. Side stripping mechanism for linked ammunition
US8037801B2 (en) * 2008-04-02 2011-10-18 Nexter Systems Link separation device for an ammunition belt
US20090249947A1 (en) * 2008-04-02 2009-10-08 Nexter Systems Link separation device for an ammunition belt
US20100319521A1 (en) * 2009-06-23 2010-12-23 Glen Dick Link chute ejection adapter
US8151683B2 (en) * 2009-06-23 2012-04-10 The United States Of America As Represented By The Secretary Of The Navy Link chute ejection adapter
US9612081B2 (en) 2014-07-23 2017-04-04 Maruzen Company Limited Cartridge for air gun
TWI595212B (zh) * 2014-07-23 2017-08-11 丸前有限公司 氣槍用彈匣
US9470496B2 (en) * 2015-01-13 2016-10-18 Machinegunarmory, Llc Disintegrating ammunition belt link
US9506705B1 (en) * 2015-04-21 2016-11-29 Joseph H. Fleischli Feeder delinker

Also Published As

Publication number Publication date
DE1255000B (de) 1967-11-23
CH399253A (fr) 1966-03-31
GB712890A (en) 1954-08-04
DE1022937B (de) 1958-01-16
GB976790A (en) 1964-12-02
LU41779A1 (xx) 1963-11-25
BE632336A (xx)
NL293088A (xx)
FR1357412A (fr) 1964-04-03

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