US2936677A - Supplying ammunition to automatic guns - Google Patents

Supplying ammunition to automatic guns Download PDF

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Publication number
US2936677A
US2936677A US725939A US72593958A US2936677A US 2936677 A US2936677 A US 2936677A US 725939 A US725939 A US 725939A US 72593958 A US72593958 A US 72593958A US 2936677 A US2936677 A US 2936677A
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US
United States
Prior art keywords
belt
gun
trunnion axis
rounds
ammunition
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
US725939A
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English (en)
Inventor
Roy G Vickers
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
Application filed by Brevets Aero Mecaniques SA filed Critical Brevets Aero Mecaniques SA
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Publication of US2936677A publication Critical patent/US2936677A/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
    • F41A9/54—Cartridge guides, stops or positioners, e.g. for cartridge extraction

Definitions

  • This invention relates to supplyingammunition to automatic guns of the kind, usually small calibre guns or say 2 0 mm. for 30 mm., for which ammunition rounds are formed into a belt, by links interconnecting successive .
  • the links usually comprise C-shaped spring clips which simply grip frictionally around the cartridge case at about themiddength of each round; As the rounds -successively reach thebreechmechanism or the gun,th e linksare separated from the round's and are'ejecrted.
  • the links used in ammunitionbelts with whichthe: present 'invention is concerned are'pivotal links, eachcomprising' two parts, which respectively engage two" successive rounds, interpivotedso as to have limited freedom'of relative angular movement, say :20.
  • the object of the present invention is to guide and control 'an ammunition belt, of pivotally interlinked rounds, in its feed path from a base of a gun mounting, to a gun which can be ,layed, i.e. moved angularly' about a normally horizontal trunnion axis for elevation or depression, relatively to the base.
  • the base may be a trainable base,.f or example a gun turret, the belt, being fed from'a magazine or other storage space on the base, does not take part in the angular laying movement ofthe gun.
  • a cartridge belt guide device fcomprising a funnel portion, securedto the gun inalignment with the cartridge. receiving port thereof, and a hollow frame rotatably' mounted on the tunnel portionto; rotate relatively thereto about an extensionfot the trunnion axis-of the gun, the frame having a roller overwhich the cartridge belt passes into the funnel so that the belt. can'twist f above and below the roller toallowfor elevational.
  • the apparatus of the present invention issimilar in some, respects to the guide device described above in that it consists ofva guiding apparatus, for leading an ammunition ,beltiof pivotally interlinked rounds to. an automatic gun, comprising a funnel member secured to the gun .for rotation. therewith aboutthe trunnion axis, and a relatively fixed supply member, to lead the belt into the funnel member.
  • an automatic gun comprising a funnel member secured to the gun .for rotation. therewith aboutthe trunnion axis, and a relatively fixed supply member, to lead the belt into the funnel member.
  • such members are arrangedcoaxially ontan'extension of ithe, trunnion axis of the gun and the supply member carries, ex-
  • Fig. 1 is a sectional part elevation, from'the front of a gun at zero elevation
  • Fig. 2 is a sectional side view on the line II- II of Fig. 1,
  • Fig. 3 is a fragmentary plan view, from the line III- III of Fig. l, and
  • Fig. 4 is a sectional: side View, corresponding to Fig. 2,: but showing the position at maximum elevation of the gun.
  • a gun (indicated only in cross-section by broken lines). in an inverted cradle 1 pivoted by trunnions" 2' in cheek plates 3 of amounting, such as a turret 'orturntable mounting, which can be trained about a normally vertical axis.
  • An ammunition box'4 is carried by'the base, or other training structure of .the mounting, and upwardly/from the box 4 extends a-fixed supply channel 5, of'closed rectangular box section.
  • the supply channel 5 is curved through to presentits mouth axially to an extension ofthe trunnion axis XX;
  • Each link comprises a double clip 6, with two spaced C-shaped fingers, embracing one round and pivoted to a single clip 6 with one C-shaped finger, embracing the next round.
  • Each round is thus grippedby a double clip 6 of one link and, between the fingers thereof, by the single clip 6 of thenext link.
  • the two parts of each link have a limited freedom of relative angular movement of L20.
  • the ammunition belt passes vup through'the' supply channel 5, through a funnel 8, over a guide sprocket rotor 9, through a smoothly crankeddeliverychannel, 10 to the feed sprocket rotor 11 and so into the breech of the gun.
  • the belt is pulled by the feed sprocket rotor 11 as each 1 round is fired and a pawl 12 in the delivery channel 10 prevents the belt running back towards the ammunition box.
  • Pairs of guide ribs 13 and 14, for the cartridge and projectile portions of:the rounds respectively, are provided in the delivery channel 10 to control the. rounds closely but allow smooth sliding thereof until they reach the feed sprocket rotor 11. 1 j
  • the delivery channel 10 and funnel Sjare carried by a plate bracket 15 extending from the nearertrunnion 2 so that they turn together with the gun in its movement about the trunnion axis XX.
  • the supply channel 5 although it trainswith the gun
  • the drawings show the ammunition supply chute for From Fig. 1, it can be seen that there are five rounds 7 7*, 7, 7 and 7 between the mouth of the supply channel 5 and the throat of the funnel 8 at the entrance to the delivery channel 10. in Fig.4, these rounds are shown in the positions they would occupy at the maximum elevation of 75 of the gun. The four link pivots between these five rounds each allow up to 20 of twist and thus give a total possible twist of 80 to cover the elevation of 75.
  • the funnel 8 has two cylindrical wall parts 8 and 8 centred on the line of the trunnion axis X-X, to prevent endwise displacement of the rounds in the grip of their links without interfering with twisting of the belt.
  • the twisting axis of the belt being offset towards the bases of the rounds, the cylindrical part 8 is of smaller radius than the part 8
  • the part 8 has a radius slightly greater than that of the arc of movement of the bases of the rounds, as the belt twists, and the part 8 has a radius slightly greater than that ofthe corresponding arc of movement of the noses of the rounds.
  • the rounds are guided into the entrance to the delivery channel 10 by the convergent part of the funnel 8 provided by a pair of plates 8, 8 symmetrically inclined to meet respectively the upper and lower borders of the entrance to the delivery channel 10.
  • the edges of the plates 8, 8 are shaped to fit the cylindrical wall parts 8 and 8 and the latter are tapered to meet the sides of the entrance to the delivery channel 10.
  • a pair of guide bars 16, 17 is provided, extending from the mouth of the supply channel 5 to the throat of the funnel 8 at the entrance to the delivery channel 10.
  • the guide bars are carried by plate brackets 18, 19 from the supply channel 5 and are arranged one above and the other below the belt path.
  • the guide bars are staggered on either side of the normally vertical plane through the trunnion axis, with which the twisting axis of the belt is coaxial, and their opposed surfaces are inclined so as to allow, in one direction, up to 10 of twist of the rounds, for depression of the gun, and, in the other direction, up to 75 of twist, for elevation of the gun.
  • the pair of inclined, adjacent surfaces of each guide bar thus have an included angle which is the supplement (95) of the total angle of twist and they meet along a smoothly rounded edge to be contacted by the rounds as the latter slide and twist between the guide bars.
  • Fig. 2 the positions of a round 7 are shown in broken lines at maximum depression and maximum elevation respectively with respect to the guide bars 16, 17.
  • the apparatus of the present invention by which the ammunition belt is guided and supported along, but permitted to twist at, an extension of the trunnion axis, ensures that the length of the feed path, between the ammunition box and the gun, remains constant and therefore there can be no sudden change of length of belt in transit which would otherwise cause variation of load on the feed mechanism. Moreover, since the transfer of the belt from the relatively fixed base of the mounting to the gun takes place on an extension of the trunnion axis, such transfer cannot produce a change in moment about that axis which might otherwise spoil aiming of the gun. It is true that the twist of the belt, resulting in contact of the rounds with the convergent part of the funnel 8,
  • Apparatus for guiding to an automatic gun an ammunition belt composed of rounds pivotally interconnected by links, the gun being pivoted about a normally horizontal trunnion axis on a mounting, said apparatus comprising a funnel member, secured to the gun for movement therewith about said trunnion axis, said funnel member having a convergent part and a throat into which said convergent part leads; a belt supply member fixed on said mounting relatively to said funnel member, said funnel member and said supply member being coaxial on an extension of said trunnion axis, and a pair of normally horizontal guide bars carried by said supply member and extending axially into said funnel member and through said convergent part to terminate close to said throat, one of said guide bars being above and the other below said extension of said trunnion axis.
  • Apparatus for guiding to an automatic gun an ammunition belt composed of rounds pivotally interconnected by links, the gun being pivoted about a normally horizontal trunnion axis on a mounting
  • said apparatus comprising an ammunition box on said mounting, a belt supply channel member extending from said box to an extension of said trunnion axis and having a mouth presented axially to said extension of said trunnion axis, a funnel member opposed-coaxially to said mouth and secured to the gun for movement with the gun about said trunnion axis, said funnel member having cylindrical wall parts centered on said extension of said trunnion axis and extending axially to the plane of said mouth, and a pair of guide barscarried by said belt supply channel member and extending axially into said funnel member, one of said guide bars extending from above and the other from below said month, said guide bars being staggered on either side of a normally vertical plane through said extension of said trunnion axis, each

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Buckles (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Feeding Of Articles To Conveyors (AREA)
US725939A 1957-04-16 1958-04-02 Supplying ammunition to automatic guns Expired - Lifetime US2936677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12389/57A GB848857A (en) 1957-04-16 1957-04-16 Improvements in and relating to supplying ammunition to automatic guns

Publications (1)

Publication Number Publication Date
US2936677A true US2936677A (en) 1960-05-17

Family

ID=10003669

Family Applications (1)

Application Number Title Priority Date Filing Date
US725939A Expired - Lifetime US2936677A (en) 1957-04-16 1958-04-02 Supplying ammunition to automatic guns

Country Status (5)

Country Link
US (1) US2936677A (fr)
DE (1) DE1112925B (fr)
FR (1) FR1205470A (fr)
GB (1) GB848857A (fr)
NL (2) NL101644C (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3021761A (en) * 1959-01-31 1962-02-20 Bofors Ab Device for belt-fed guns
US3029706A (en) * 1958-04-03 1962-04-17 Mach Tool Works Oerlikon Device for guiding an ammunition belt
US4389918A (en) * 1981-05-26 1983-06-28 The United States Of America As Represented By The Secretary Of The Army Ammunition belt feed magazine system
US4669355A (en) * 1984-01-11 1987-06-02 Oerlkon-Buhrle AG Werkzeugmaschinenfabrik Disc-type ammunition channel for feeding ammunition from a stationary channel to a firing weapon
US5782157A (en) * 1997-04-02 1998-07-21 Esco Electronics Company Chuting assembly for ammunition magazine feed
US20060109380A1 (en) * 2002-12-13 2006-05-25 Koninklijke Philips Electronics N.V. Television display unit
US7934443B1 (en) * 2007-04-05 2011-05-03 Bennett Keith A Magazine for 22 caliber conversion kit and 22 caliber firearm
US10900725B2 (en) * 2016-11-15 2021-01-26 Nexter Systems Belt ammunition feeding device for dual-feed automatic weapon

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4474102A (en) * 1981-08-17 1984-10-02 General Electric Company Ammunition handling system
IL66467A (en) * 1981-08-17 1987-12-31 Gen Electric Ammunition handling system
DE8915221U1 (de) * 1989-12-28 1990-02-08 Marwitz & Hauser GmbH, 7000 Stuttgart Längenverstellbarer Brillenbügel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB355767A (en) * 1929-02-22 1931-08-28 Lucien Albert Boussel Improvements in or relating to guns for use on air-craft

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH126842A (de) * 1927-06-05 1928-07-16 Friedrich Von Merkatz Einrichtung zum Zuführen des Munitionsbandes bei raumbeweglichen, um zwei sich kreuzende Achsen dreh- oder schwenkbaren Maschinenwaffen.
GB574673A (en) * 1938-10-22 1940-04-26 Boulton Aircraft Ltd Improved means for feeding ammunition to belt fed machine guns

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB355767A (en) * 1929-02-22 1931-08-28 Lucien Albert Boussel Improvements in or relating to guns for use on air-craft

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3029706A (en) * 1958-04-03 1962-04-17 Mach Tool Works Oerlikon Device for guiding an ammunition belt
US3021761A (en) * 1959-01-31 1962-02-20 Bofors Ab Device for belt-fed guns
US4389918A (en) * 1981-05-26 1983-06-28 The United States Of America As Represented By The Secretary Of The Army Ammunition belt feed magazine system
US4669355A (en) * 1984-01-11 1987-06-02 Oerlkon-Buhrle AG Werkzeugmaschinenfabrik Disc-type ammunition channel for feeding ammunition from a stationary channel to a firing weapon
US5782157A (en) * 1997-04-02 1998-07-21 Esco Electronics Company Chuting assembly for ammunition magazine feed
US20060109380A1 (en) * 2002-12-13 2006-05-25 Koninklijke Philips Electronics N.V. Television display unit
US7934443B1 (en) * 2007-04-05 2011-05-03 Bennett Keith A Magazine for 22 caliber conversion kit and 22 caliber firearm
US10900725B2 (en) * 2016-11-15 2021-01-26 Nexter Systems Belt ammunition feeding device for dual-feed automatic weapon

Also Published As

Publication number Publication date
GB848857A (en) 1960-09-21
DE1112925B (de) 1961-08-17
FR1205470A (fr) 1960-02-03
NL226935A (fr)
NL101644C (fr)

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