US3653289A - Cartridge belt feed systems for automatic weapons - Google Patents

Cartridge belt feed systems for automatic weapons Download PDF

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Publication number
US3653289A
US3653289A US882155A US3653289DA US3653289A US 3653289 A US3653289 A US 3653289A US 882155 A US882155 A US 882155A US 3653289D A US3653289D A US 3653289DA US 3653289 A US3653289 A US 3653289A
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US
United States
Prior art keywords
cartridge
claws
tabs
link
lips
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
US882155A
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English (en)
Inventor
Bernard Maillard
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
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Filing date
Publication date
Application filed by Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
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Publication of US3653289A publication Critical patent/US3653289A/en
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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
    • F42B39/00—Packaging or storage of ammunition or explosive charges; Safety features thereof; Cartridge belts or bags
    • F42B39/08—Cartridge belts

Definitions

  • The'links react against the lateral lips of the insertion aperture of the ammunition bearer base-plate, through the outer lateral walls of the tabs.
  • the inclinations of the contact and reaction surfaces of the tabs and lips are such that they co-operate reversibly and permit subsequent extraction of the cartridge in conjunction with a radial distension of the claws.
  • the reaction surfaces may be bevels at the respective claw levels.
  • the front bevels extend higher than the rear ones, to incline the cartridge forwards on insertion.
  • SHEET 2 [1F 2 CARTRIDGE BELT FEED SYSTEMS FOR AUTOMATIC WEAPONS
  • This invention relates to ammunition feed systems for automatic weapons, of the kind in which the cartridges to be supplied to the weapon are interconnected by links each of which clamps a cartridge and is hingedly connected to the two adjacent links, the plurality of cartridges interlinked thus forming a flexible belt which is conveyed to the weapon by drive means (hereinafter referred to as the ammunition bearer) which, together with said links, will herein be regarded as the essential component parts of the feed system.
  • drive means hereinafter referred to as the ammunition bearer
  • the invention relates more particularly though not exclusively to feed systems of this kind intended for automatic weapons having a caliber lying between 20 millimeters and 50 millim ters.
  • the ammunition bearer includes a base-plate embodying a longitudinal insertion aperture upon the lateral lips of which the link clamping the first cartridge to be fed into the weapon reacts through the medium of front and rear claws, the cartridge then occupying a so-called insertion position in which it is engaged from the rear by the guns sliding bolt, as the same moves back into its shut position, so as to be extracted from its link by being thrust forward until it occupies its firing position in the breech prior to being struck by the firing-pin.
  • the link surrounding the cartridge in its insertion position usually reacts against the lateral lips of the insertion aperture through the end-sections of the front and rear claws on the link, these end-sections being splayed outwards slightly in relation to the apparent circular transverse contour of the link, whereby to form bearing tabs.
  • the ammunition feed system includes an ammunition bearer which is devised so as to successively fetch the cartridges, interconnected by links having front and rear claws, into an insertion position wherein the link clamping the associated cartridge reacts, through said front and rear claws, against the lateral lips of an insertion aperture formed in the base-plate of said ammunition bearer, the said system being characterized in that the cartridge interconnecting links and the lateral lips of said insertion aperture are so devised that,
  • each link comprises a front claw'and a rear claw which are bent inwardly to form inclined flat tabs contained within the apparent cross-sectional contour of each claw,
  • the link clamping a cartridge in its insertion position reacts against the lateral lips of the insertion aperture through the medium of the outer lateral wall of the inwardly inclined tab formed at the end of each of its claws, the inclination of the contact and reaction surfaces of said tabs and said lips being such that said surfaces co-operate reversibly and permit subsequent extraction of the cartridge by a radial expansion of the link claws clamping said cartridge.
  • the present invention further includes in its scope those ammunition feed systems of the kind hereinbefore disclosed as embody the above-disclosed features, and such special components and tools, and more particularly the ammunition bearers, special links and machine for shaping such links as are required for obtaining such systems.
  • FIG. 1 shows in sectional side elevation a cartridge belt type ammunition feed system according to the invention, with a cartridge illustrated in dot-dash lines in its insertion position;
  • FIG. 2 is an underneath view of a component link of said cartridge belt, said link being devised in accordance with this invention.
  • FIGS. 3 and 4 are diagrammatic cross-sectional views on an enlarged scale taken through the lines Ill-III and IV-IV respectively of FIG. 1.
  • the ammunition feed system for a small-caliber automatic weapon shown in FIG. 1 is a direct feed system comprising basically an ammunition bearer l capable of feeding into the weapon a cartridge belt of which each cartridge 2 is clamped by a link 3 formed with front and rear claws 3a and 3b, respectively, for clamping the cartridge 2, said link further including, between said claws and extending in diametrically opposed transverse directions, an arch 3c and a hook 311 (shown clearly in FIG. 2) for uniting that particular link with the adjacent links whereby to form the cartridge belt.
  • the base-plate of ammunition bearer 1 is formed with a longitudinal insertion aperture la located vertically above the guns feed channel, said ammunition bearer including means (well known per se) for holding temporarily motionless, in a position of slight forward inclination, that cartridge 2 which is in a position of insertion and which has its associated link 3 reacting against the lateral lips of insertion aperture la (in a manner to be explained in greater detail hereinbelow) through the medium of its front and rear claws 3a and 3b.
  • This cartridge 2 which is thus provisionally restrained in an insertion position through reaction of the front and rear claws 3a and 3b of its link 3 against the lateral lips of insertion aperture 10 formed in the base-plate of ammunition bearer 1, is engaged from its rear by the gun's sliding bolt 4 in the course of the forward return motion thereof, whereby to be extracted from its link 3 and to be pushed forward into its firing position in the breech prior to being struck by the firing-pin.
  • the hatched area S is the area over which the guns sliding bolt 4 engages the base 2a of cartridge 2 from the rear.
  • the feed system devised overall as hereinbefore specified is furthermore so contrived, notably in respect of the configuration of the claws 3a and 3b of links 3 and that of the insertion aperture 1a of ammunition bearer 3, that,
  • the link clamping a cartridge in its insertion position react against the lips of insertion aperture In via the outer lateral walls e of the inwardly bent tabs formed on the tips e of the front and rear claws 3a and 3b of said link, the co-operating surfaces e and s, of each claw end and of the lateral lip of insertion aperture la, respectively, being so inclined that they permit, by a reversibility effect, extraction of the cartridge 2 from the claws 3a and 3b of link 3, such extraction being accompanied by a radial expansion of said claws.
  • the claws 3a and 31) offer in respect of cartridge 2 a maximum clamping angle A in conjunction with a likewise maximum engagement area S.
  • the present invention provides improved engagement of the cartridge by the sliding bolt of the weapon.
  • reaction of the claw thrust planes are directed inwardly and hence contribute towards effective clamping of the cartridge.
  • the inclined thrust surfaces s, formed on the lateral lips ofinsertion aperture In for receiving the claws 3a and 3b of the links 3 should preferably be restricted, as shown in FIG. 1, to the respective levels of the claws, said thrust surfaces s being accordingly formed by local bevels on the said lateral lips, at the levels in question, the bevels s, associated to the front claw 30 being made efiective over a greater height than those associated to the rear claw 3b whereby to obtain the required forwardly inclined insertion position of the cartridge 2.
  • the ammunition feed system according to this invention ofiers obvious advantages which stem from the configurations of the links and the co-operating reaction surfaces of the insertion aperture in the ammunition bearer.
  • An improvement to a cartridge belt feed system for automatic weapons comprising an ammunition bearer adapted to successively convey cartridges interconnected by links having front and rear claws into an insertion position wherein the link clamping a given cartridge reacts, through said front and rear claws, against the lateral lips of an insertion aperture formed in the base-plate of said ammunition bearer, said improvement residing in the fact that the cartridge interconnecting links and the lateral lips of said insertion aperture are so devised respectively that,
  • each link comprises a body having a front pair of claws, inwardly bent tips on said claws whereby to form flat inclined tabs lying within the apparent cross-contour of the claw in question, flat laterally outer surfaces being provided on said tabs, and
  • each said link when clamping a cartridge in its insertion position reacts against the lateral lips of the insertion aperture through the laterally outer walls of the inwardly inclined tabs, the length of the body of said claw above said lips being less than the height of said body above the points at which said tabs grip a cartridge, the inclinations of the contact and reaction surfaces of said tabs and of said lips being such that they co-operate reversibly and permit subsequent extraction of the cartridge in conjunction with a radial distension of the link claws clamping said cartridge.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Toys (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US882155A 1969-07-14 1969-12-04 Cartridge belt feed systems for automatic weapons Expired - Lifetime US3653289A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU59100 1969-07-14

Publications (1)

Publication Number Publication Date
US3653289A true US3653289A (en) 1972-04-04

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ID=19726101

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US882155A Expired - Lifetime US3653289A (en) 1969-07-14 1969-12-04 Cartridge belt feed systems for automatic weapons

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US (1) US3653289A (en))
CH (1) CH518516A (en))
FR (1) FR2051717B1 (en))
GB (1) GB1309458A (en))
LU (1) LU59100A1 (en))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511499A1 (fr) * 1981-08-17 1983-02-18 Diehl Gmbh & Co Dispositif d'alimentation et de prelevement de munitions sans douilles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2505778C2 (ru) * 2012-04-10 2014-01-27 Федеральное государственное унитарное предприятие "Машиностроительный завод "Штамп" им. Б.Л. Ванникова" Патронная лента

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388943A (en) * 1942-08-11 1945-11-13 Lockheed Aircraft Corp Disintegrating ammunition link
US3198075A (en) * 1961-06-02 1965-08-03 Brevets Aero Mecaniques Automatic firearm with a recoiling barrel
US3221603A (en) * 1964-03-23 1965-12-07 John L Lochhead Cartridge feeding mechanism for fixedbarrel, slide-operated guns

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388943A (en) * 1942-08-11 1945-11-13 Lockheed Aircraft Corp Disintegrating ammunition link
US3198075A (en) * 1961-06-02 1965-08-03 Brevets Aero Mecaniques Automatic firearm with a recoiling barrel
US3221603A (en) * 1964-03-23 1965-12-07 John L Lochhead Cartridge feeding mechanism for fixedbarrel, slide-operated guns

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511499A1 (fr) * 1981-08-17 1983-02-18 Diehl Gmbh & Co Dispositif d'alimentation et de prelevement de munitions sans douilles

Also Published As

Publication number Publication date
FR2051717A1 (en)) 1971-04-09
GB1309458A (en) 1973-03-14
CH518516A (fr) 1972-01-31
LU59100A1 (en)) 1971-06-22
DE2030476A1 (de) 1971-02-11
FR2051717B1 (en)) 1973-02-02
DE2030476B2 (de) 1975-05-28

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