US3859891A - Rotor feed for an automatic firearm supplied by a single link hook and eye chain belt - Google Patents

Rotor feed for an automatic firearm supplied by a single link hook and eye chain belt Download PDF

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Publication number
US3859891A
US3859891A US405256A US40525673A US3859891A US 3859891 A US3859891 A US 3859891A US 405256 A US405256 A US 405256A US 40525673 A US40525673 A US 40525673A US 3859891 A US3859891 A US 3859891A
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United States
Prior art keywords
links
feed
belt
link
extraction
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Expired - Lifetime
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US405256A
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English (en)
Inventor
Bernard Pierre
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Gouvernement de la Republique Francaise
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Gouvernement de la Republique Francaise
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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
    • F41A9/31—Sprocket-type belt transporters with cartridge stripping means

Definitions

  • the cartridge extraction post comprises a central star [451 Jan, 14, 1975 wheel rotor keyedon a longitudinal shaft whose axis is situated in the vertical plane of symmetry of the assembly of the feed at a level such that the star wheels project into the central upper zone of a transverse passage, formed of two opposite passages.
  • the link-freed cartridges are removed by a pusher operating longitudinally passing through an opening formed in a central zone of the floor of the transverse passage.
  • a fixed support cam in the central zone of the extraction station at the level passed by the back of the links is positioned over at least the fraction of the transverse passage in which the extraction of the cartridges occurs when the cartridge belt passes in the direction F reverse to the conventional direction F for which the hooks of the links are directed forwardly.
  • the feed lends itself to routeing of the cartridge belt, either in the conventional direction F (hooks of the links directed forwardly) for which there is no risk of breakage of the belt by unhooking in the extraction phase, or in the reverse direction F (eyes of the links directed forwardly) the cam then resisting lifting and unhooking of the link in the extraction phase under the effect of the upward reaction then exerted on this link which continues to travel in the direction F 2 under the action of the rotor thereby correctly driving the following link and the remainder of the belt.
  • F hooks of the links directed forwardly
  • the invention relates to'a rotor feed (that is to say star-wheel) intended for supplying an automatic firearm with cartridges assembled in a belt by means of single links each gripping a single cartridge and comprising, for their junction with the links involving two neighbouring cartridges situated on both sides of the cartridge concerned, on one side, a hook, and, on the other side, an eye, the hook of the link of the cartridge concerned being engaged in the eye of the link of one of the abovesaid neighbouring cartridges, whilst the eye of said cartridge connected is in engagement with the hook of the other neighbouring cartridge.
  • the feed concerned is intended for supplying an automatic firearm of small or medium calibre, for example with a calibre of to 50 mm, which is the case, especially, of certain known automatic guns of 30 mm (French cannon MUHLOUSE, English cannon ADEN) whose feed can be effected by means of cartridges in belts bringing into play single book and eye links of the above-specified type.
  • any rotor feed of this type comprises an extraction post into which the cartridge belt passes under the effect of a central starwheel rotor and where each cartridge, gripped elastically by a hook and eye link, is extracted from said link by longitudinal displacement then to be routed to a waiting position or towards its position of insertion in the firearm (either directly, or more frequently through a transporter mechanism, for example with a drum), the link freed from its cartridge, but still in engagement with the star-wheel rotor, being propelled towards an injection passage.
  • FIG. 1 represents, in perspective and in the course of preparation, a section of a hook and eye link cartridge belt with lefbhand travel intended for use in a rotor feed according to the invention
  • FIG. 2 is a transverse section, seen from the rear, of the extraction post of a conventional rotor feed capable of routeing correctly a cartridge belt of the type illustrated in FIG. 1, with the reservation that the routeing of said belt is effected in a well determined direction, namely that for which the hooks of its links are directly forwardly (that is to say in they direction of routeing of the belt),
  • FIG. is a transverse section, made under the same conditions as that of FIG. 2, of the extraction post of a rotor feed according to the invention, which has, with respect to the conventional rotor feed illustrated in FIG. 2, the considerable advantage of being able to route a cartridge belt ofa predetermined type (hook to the left or hook to the right) as well in one direction as in the other.
  • the section of the ammunition belt illustrated in FIG. 1 comprises two identical successive links M, and M each of these links comprising a body 1 adapted to grip a corresponding cartridge C or C over a little more than said body being provided, in its central region, with a hook 2 situated to the right and an eye 3 situated to the left, this hook and this eye extending re spectively on both sides of the body of the link 1.
  • the assembly of the belt is effected in the following manner starting from the first link M in which the cartridge C is engaged: there is coupled, to this link M the empty link M by engagement of its book 2 in the eye 3 of said link 1, after which there is engaged, in the link M thus coupled to link M the cartridge C (shown in mixed line) whose presence, at the level of the hook of this link M locks the eye 3 of the link M, engaged in said hook, the distance between the nose of this hook and the body of cartridge C being too slight to permit the passage of the abovesaid eye; after which there is coupled to the link M provided with its cartridge C by the same process, a new empty link M (not shown in FIG. 1, but visible in FIG. 2) which is then provided with a new cartridge C and so on until the desired length of belt is obtained.
  • FIG. 2 there is shown in FIG. 2, in transverse section seen from the rear, the extraction post of a conventional feed with a central rotor 4 (comprising star wheels 4a keyed on a motor shaft 4b) into which a cartridge belt formed of links M M M etc.
  • the cartridge belt enters the extraction post through a passage 5a which plays only the role of insertion passage and the empty links emerge through an opposite passage 6a which plays only the role of ejection passage and which is provided with a guide 7 for the empty links, the cartridges extracted longitudinally from their link in line with the rotor 4 being removed, by a pusher passing through an opening 8, towards a transporter device (not shown) which routes them towards a waiting position preceding their position of insertion in the cartridge chamber of the firearm.
  • the problem has be posed of being able to supply the firearm indifferently from the right or from the left with a hook and eye link belt of a predetermined type.
  • .It is a particular object of the invention to resolve this problem, that is to say to provide a central rotor feed capable of routing correctly (without risk of breakage of the belt) in one direction or the other of a cartridge belt of a predetermined type formed by means of single hook and eye links, such a feed having therefore to lend itself both to supply from the left and to supply from the right of a predetermined automatic firearm.
  • the rotor feed according to the invention comprises an extraction post (shown in FIG. 3 in transverse section seen from the rear) comprising a central rotor 4 with a star wheels 4a keyed on a longitudinal shaft 4b, for example channelled, of which the axis is situatedin the vertical plane of symmetry of the assembly of the feed at a level such that the star wheels 4a project into the central upper zone of a transverse passage, formed from two opposite passages 5 and 6, capable of receiving a guide for empty link 7 and into which can pass a cartridge belt formed by means of links M M M etc., with hooks 2 and eyes 3, the removal of the unlinked cartridges being effected longitudinally by reacwhich the extraction of the cartridges occurs when the cartridge belt passes in the direction F contrary to the conventional direction F for which the hooks 2 of the link are directed forwardly, due to which the feed concerned lends itself to routing the cartridge belt, either in the conventional direction F (hooks 2 of they links directed forwardly) for which there is no risk of breakage of the belt by unhook
  • Such a feed lends itself therefore well to supply from the right or to supply from the left for a cartridge belt of a predetermined type with hook and eye links.
  • the support cam operates between the central zone of the extraction post and the passage 6 playing the role of insertion passage when the cartridge belt travels in the direction F forwhich the eyes 3 of its links are directed forwardly.
  • the support cam 10 can then advantageously be mounted freely in rotation on the shaft 4b of rotor 4, preferably between two star wheels 4a, and be keyed angularly by cooperation of a channel E with a boss B of corresponding shape belonging to the fixed casing of the feed. 1
  • Feed according to claim 1, comprising, respectively, in the floors of said opposite channels two fixing posts each adapted to receive a removable guide forthe empty links, this guide being positioned, before firing, in that of said channels which has to play the role of evacuation channel for the shot concerned.
  • Feed according to claim 2 comprising, respectively, inthe floors of said opposite channels two fixing posts each adaptedto receive a removable guide for the empty links, this guide being positioned, before firing, in that of said channels which has to play the role of evacuation channel for the shot concerned.
  • said fixing posts comprise orifices for the passage of bolts adapted to fix a base fast to the guide.
  • the extraction post comprises a central star wheel rotor keyed on a longitudinal shaft whose axis is situated in the vertical plane of symmetry of the assembly of the feed at a level such that the star wheels project into the central upper zone of a transverse passage, formed of two opposite passages, into which a belt of cartridges formed by means of hook and eye links passes, the removal of the link-freed cartridges operating longitudinally by the action of a pusher passing through an opening formed in a central zone of the floor of theabovesaid transverse passage, which is situated between the above-said opposite channels, said feed comprising a fixed support cam situated in the central zone of the extraction station at the level passed by the back of the links, said cam existing, in the transverse sense, over at least the fraction of the transverse passage in which the extraction of the cartridges occurs when the cartridge beltpasses in, the direction F flreverse to the conventional direction F, for which the hooks of

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Automatic Disk Changers (AREA)
  • Specific Conveyance Elements (AREA)
  • Structure Of Belt Conveyors (AREA)
US405256A 1972-10-13 1973-10-11 Rotor feed for an automatic firearm supplied by a single link hook and eye chain belt Expired - Lifetime US3859891A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7236250A FR2203497A5 (enExample) 1972-10-13 1972-10-13

Publications (1)

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US3859891A true US3859891A (en) 1975-01-14

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US405256A Expired - Lifetime US3859891A (en) 1972-10-13 1973-10-11 Rotor feed for an automatic firearm supplied by a single link hook and eye chain belt

Country Status (7)

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US (1) US3859891A (enExample)
CH (1) CH579253A5 (enExample)
DE (1) DE2350916A1 (enExample)
ES (1) ES419612A1 (enExample)
FR (1) FR2203497A5 (enExample)
GB (1) GB1440685A (enExample)
IL (1) IL43423A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU237790U1 (ru) * 2025-07-04 2025-10-07 Общество с ограниченной ответственностью "Инвестиции и Управление" Патронная лента для автоматического оружия

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803169A (en) * 1952-07-18 1957-08-20 Mach Tool Works Oerlikon Admin Devices for automatically disintegrating the emptied ammunition belts of automatic weapons
US2845005A (en) * 1956-01-31 1958-07-29 Charles H Stevens Relinking feeder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803169A (en) * 1952-07-18 1957-08-20 Mach Tool Works Oerlikon Admin Devices for automatically disintegrating the emptied ammunition belts of automatic weapons
US2845005A (en) * 1956-01-31 1958-07-29 Charles H Stevens Relinking feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU237790U1 (ru) * 2025-07-04 2025-10-07 Общество с ограниченной ответственностью "Инвестиции и Управление" Патронная лента для автоматического оружия

Also Published As

Publication number Publication date
IL43423A0 (en) 1974-03-14
IL43423A (en) 1977-05-31
ES419612A1 (es) 1976-02-16
DE2350916A1 (de) 1974-04-18
CH579253A5 (enExample) 1976-08-31
GB1440685A (en) 1976-06-23
FR2203497A5 (enExample) 1974-05-10

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