US1846034A - Drum magazine for machine guns and automatic small arms - Google Patents

Drum magazine for machine guns and automatic small arms Download PDF

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Publication number
US1846034A
US1846034A US508401A US50840131A US1846034A US 1846034 A US1846034 A US 1846034A US 508401 A US508401 A US 508401A US 50840131 A US50840131 A US 50840131A US 1846034 A US1846034 A US 1846034A
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US
United States
Prior art keywords
cover portion
pan portion
machine guns
small arms
magazine
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
US508401A
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English (en)
Inventor
Larsson Carl Alfred
Higson Percy Reuben
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.)
Vinters Armstrongs Ltd
Original Assignee
Vickers Armstrongs Ltd
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 Vickers Armstrongs Ltd filed Critical Vickers Armstrongs Ltd
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Publication of US1846034A publication Critical patent/US1846034A/en
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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
    • F41A9/73—Drum magazines
    • F41A9/74—Drum magazines with radially disposed cartridges

Definitions

  • This invention relates to drum magazines for machine guns and automatic small arms, the said magazines being of the kind comprising a stationary pan portion provided 5 with a boss having a helical groove for the reception of the bullets of the cartridges, and with a helical support or a number (three for example) of communicating compartments, for the rim portions of the cartridges,
  • the said cartridges being a-ngularly displaced step by step during the working of the gun in order to bring them one at a time into a discharge opening in the base of the pan portion for engagement by the bolt of the gun, by means of a cover portion or impeller provided with spacing members carried thereby.
  • spacing members have heretofore been 'constituted by pins riveted to the said cover portion and it has been found that these are liable to become bent or broken during operation.
  • the chief object of the resent invention is to provide an improvec construction of spacing members which will not be open to this objection.
  • the spacing members are constituted by radially disposed walls which extend a substantial distance towards the axis of rotation of the cover portion or impeller and which form part of, or are rigidly secured to, the latter.
  • the walls are constituted by the side members of U-shaped brackets rigidly connected to the cover portion and suitably spaced apart. Each of the said brackets and each of the spaces between them receives a cartridge.
  • the transverse members of these brackets may be riveted to the cover portion and the outer part of each side member may receive a pin which extends the whole depth of the side member and is riveted to the cover portion.
  • the walls may be formed by milling or otherwise forming recesses or slots in a ring of substantial depth and thickness which is suitably attached to 15 the cover portion, preferably by rivets extending through holes in the bases of the recesses or slots.
  • FIG. 6 is a section on a larger scale of the rear retaining catch shown-in Figure 1,
  • Figure 7 is a plan of Figure 6, and Figure 8 is a view of a modified construction or" the spacing members.
  • A is the stationary pan portion of the magazine and B is the rotary cover portion or impeller.
  • the said pan portion A has a hollow boss A formed on its outer surface with a helical grooveA for the reception of the bullets of the cartridges and also has a number of communicating compartments A? for the rims of the cartridges as is well understood. In the example shown there are three such compartments and these may, if desired, be replaced by a helical support corresponding to the helical groove A
  • the rotary cover portion or impeller B has downwardly extending spacing members which,
  • each of .the said brackets receives a cartridge between its side members B and the brackets are spaced so as to receive other cartridges in the spaces as shown in Figure 2.
  • the magazine is designed to receive 35 cartridges in WESTMINSTER, ENGLAND, A i
  • this single-sided bracket is shown at the lefthand side of Figure 4 (its side member, transverse member and pin being represented by B, l3 and 13 and desired it may be made integral with its adjacent double sided bracket.
  • the aforesaid cover portion B is displaced by a spiral spring B housed within the aforesaid hollow boss A
  • One end of the said spring is connected to a part B which depends from the cover portion and fits Within the said hollow boss and the other end of the spring is attached to a sleeve C surrounding an internal spigot A within the boss A
  • This sleeve is normally connected to the said spigot by a catch or key C and is provided with an actuating handle C
  • the catch or key C When the catch or key C is moved into its disengaging position the spring 13* can be wound up by means of the said handle C after which the catch or key is operated to re connect the sleeve G to the spigot A he cover portion 13 is intermittently released, so that it can perform its step-
  • Each cartridge as it issues from a gap in the lower wall of the pan portion A is held by. means of longitudinal guide members A ( Figures 1 and 3) thereon until it is displaced forwardly by a spring-controlled pawl D on the bolt; this pawl passes between the guide members A and when the cartridge comes clear of their forward ends the cover portion 13 can again move to bring another cartridge into position between the guide members, the pawl D riding over this car tridge when the bolt moves rearward.
  • the drum magazine constructed as hereinbefore described has the lower part of the pan portion A formed at its front and rear with members A A, A for co -operating with spring controlled catches E, E carried by the casing of the gun, these catches serving to hold the magazine in position on the gun without the necessity of providing the usual spigot or pin projecting from the casing.
  • the front member A is composed of a flat projection or lug engaging beneath the front spring controlled catch E which is preferably carried by the base portion of the rear sight of the gun, the edge of this projection or lug engaging with a corresponding recess in the catch.
  • the rear members A, A are constituted by two spaced projections or lugs which fit one on each side of part E of the rear spring controlled catch E which is carried by a bracket E on the gun casing, this catch also having parts E, E which engage with the upper surfaces of the said projections or lugs.
  • the part E engaging between the projections or lugs A A serves in conjunction with the catch E, to hold the magazine in the correct angular position and the parts E E engaging with the upper surfaces serve, also in conjunction with the catch E, to hold the magazine flat against the gun casing.
  • the part E is constituted by a block carried by the catch E and recessed to receive one end of a helical compression spring E the other end of which is housed in a plug E -screwed into the bracket E
  • the catch E and block E are retracted by a member E having an arm E projecting into the catch and block; this member is pivoted to lugs E E on the. bracket E and may be operated by a flap E pivoted to the said lugs bythe pivot pin of the member I
  • the portions B between these recesses form the aforesaid walls constituting the spacing members for the cartridges.
  • the said ring is suitably attached to the cover portion or impeller preferably by rivets ex tending through holes B in the bases of some of the recesses.
  • a statlonary pan portion means on said pan portion for guiding the cartridges towards the discharge opening in the base of the pan portion, a movable cover portion, brackets of U-shape projecting inwardly from said cover portion, the side members of said brackets extending a substantial distance towards the axis of rotation of the cover portion and constituting spacing members for the cartridges, rivets securing the transverse members of said brackets to said cover portion and a pin passing through the outer part of each side memher, said pin extending the whole depth of the side member and being riveted to the cover portion.
  • a stationary pan portion means on said pan portion for guiding the cartridges towards the discharge opening in the base of the pan portion, a movable cover portion, a ring of substantial depth and thickness on the inner side of said cover portion, said ring being formed with recesses or grooves to form radial walls which extend a substantial distance towards the axis of rotation of the cover portion and constitute spacing members for the cartridges, and rivets extending through holes in the bases of the recesses or grooves for attaching the ring to the cover portion.
  • a stationary pan portion In a drum magazine for machine guns and automatic small arms, the combination of a stationary pan portion, means on said pan portion for guiding the cartridges towards the discharge opening in the base of the pan portion, a movable cover portion, cartridge spacing members on said cover portion, a hollow boss on said pan portion, a spiral spring housed within said hollow boss, a part depending from the cover portion and fitting within said hollow boss which thus serves as a bearing for said part, a sleeve, one end of said spring bein connected to said depending part and the other end to said sleeve, and means for detachably connecting said sleeve to said pan portion.
  • a drum magazine for machine guns and automatic small arms the combination with the elements claimed in claim 1, of a hollow boss on said pan portion, a spiral spring housed within said hollow boss, a part depending from the cover portion and fitting within said hollow boss which thus serves as a bearing for said part, a sleeve, one end of said spring being connected to said depending part and the other end to said sleeve, and means for detachably connecting said sleeve to said pan portion.
  • a stationary pan portion for guiding the cartridges towards the discharge opening in the base of the pan portion, a movable cover portion, cartridge spacing members on said cover portion, and longitudinal guide members, on the outer surface of the base of said pan portion for holding each cartridge as it issues from the discharge opening and guiding it during its forward movement for in sertion into the gun.
  • a stationary pan portion means on said pan portion for guiding the cartridges towards the discharge opening in the base of the pan portion, a movable cover portion, cartridge spacing members on said cover portion, a member on the front of the lower part of the pan portion for engaging with a s rin -controlled catch on the un casin and a member on the rear of the lower part of the pan portion for engaging with another spring-controlled catch on the gun casing, said catches serving to hold the magazine in position without the necessity of providing the usual spigot or pin projecting from the gun casing.
  • a stationary pan portion for guiding the cartridges towards the discharge opening in the base of the pan portion
  • a movable cover portion for guiding the cartridges towards the discharge opening in the base of the pan portion
  • cartridge spacing members on said cover portion
  • a fiat projection on the front of the lower part of the pan portion for engaging beneath a spring-controlled catch on the gun casing
  • two spaced projections on the rear of the lower part of the pan portion for engaging on each side of and also beneath another spring-controlled catch on the gun casing
  • CARL ALFRED LARSSON PERCY REUBEN HIG-SON.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
US508401A 1930-02-10 1931-01-13 Drum magazine for machine guns and automatic small arms Expired - Lifetime US1846034A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4435/30A GB350892A (en) 1930-02-10 1930-02-10 Improvements in or relating to drum magazines for machine guns and automatic small arms

Publications (1)

Publication Number Publication Date
US1846034A true US1846034A (en) 1932-02-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
US508401A Expired - Lifetime US1846034A (en) 1930-02-10 1931-01-13 Drum magazine for machine guns and automatic small arms

Country Status (4)

Country Link
US (1) US1846034A (xx)
BE (1) BE376420A (xx)
FR (1) FR709101A (xx)
GB (2) GB350913A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319523A (en) * 1964-08-27 1967-05-16 Richard J Casull Drum cartridge feeding mechanism
US4457208A (en) * 1982-06-07 1984-07-03 Western Design Corporation Drum-type ammunition magazine
US20080276795A1 (en) * 2007-02-09 2008-11-13 Oerlikon Contraves Ag Cartridge chamber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319523A (en) * 1964-08-27 1967-05-16 Richard J Casull Drum cartridge feeding mechanism
US4457208A (en) * 1982-06-07 1984-07-03 Western Design Corporation Drum-type ammunition magazine
US20080276795A1 (en) * 2007-02-09 2008-11-13 Oerlikon Contraves Ag Cartridge chamber

Also Published As

Publication number Publication date
FR709101A (fr) 1931-08-03
GB350913A (en) 1931-06-10
BE376420A (xx)
GB350892A (en) 1931-06-10

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