US3443334A - Cartridge magazine with a spring whose force against the cartridge may be selectively increased - Google Patents

Cartridge magazine with a spring whose force against the cartridge may be selectively increased Download PDF

Info

Publication number
US3443334A
US3443334A US663868A US3443334DA US3443334A US 3443334 A US3443334 A US 3443334A US 663868 A US663868 A US 663868A US 3443334D A US3443334D A US 3443334DA US 3443334 A US3443334 A US 3443334A
Authority
US
United States
Prior art keywords
magazine
spring
cartridge
cap
rounds
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
US663868A
Other languages
English (en)
Inventor
Edward J Ardolino
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3443334A publication Critical patent/US3443334A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F41A9/65—Box magazines having a cartridge follower
    • F41A9/70—Arrangements thereon for discharging, e.g. cartridge followers or discharge throats

Definitions

  • a firearm magazine of the so-called box type in which the cartridges or ammunition rounds are contained in a rectangular chamber having a top opening connected to the firearm through which the rounds are fed into the firing mechanism of the firearm.
  • Pressure for feeding the rounds is furnished by a coiled or leaf spring having one end portion abutting the bottom of the magazine chamber and the opposite end portion bearing on the lowest adjacent round stored in the magazine or in some cases the end of the spring acting through a follower to distribute the forces.
  • Another object of my invention is to save on transportation space by eliminating separate shipments of containers and contents by permitting the containers to receive their contents prior to shipping and at the same time not loading the spring to the extent required to feed the contents properly as in this particular example, namely the magazine charged with ammunition rounds.
  • Still another object of my invention is to provide a magazine which can be charged when so desired regardless of place or time of use.
  • Still another object of my invention is to provide 3,443,334 Patented May 13, 1969 "ice a firearm magazine which avoids erratic feeding and even no feeding at all.
  • Another object of my invention is to provide a container whose contents are evacuated by spring pressure which container will have indefinite shelf life after charging by not activating the feed spring.
  • Another object is to provide a container which is of simple structural details to enable mass production at low cost.
  • FIGURE 1 shows a firearm to which is attached a magazine incorporating my invention
  • FIGURE 2 is a side elevation of a magazine showing my invention in a charged condition but not activated;
  • FIGURE 3 is a side elevation of the magazine shown in FIGURE 2 but having the spring activated
  • FIGURE 4 is a partial end elevation taken on line 44 of FIGURE 3.
  • numeral 10 denotes the composite assembly of a firearm magazine comprising the activator cap 12 and the magazine chamber 11 charged with rounds 15 of ammunition to be propelled to exit opening 30 by propelling spring 13 and closed at the bottom by activator cap 12 after the charge of rounds has been inserted through the open lower end of the magazine chamber 11.
  • the magazine 10 is in a nonactivated position and in an activated position as shown in FIGURES 3 and 4.
  • the spring 13 is preferably formed of wire or strip material but is not limited thereto.
  • a follower or platform 14 is preferably used at the upper end of the spring to engage the lowermost round 15 to properly distribute the force of the spring 13 to the round as it feeds but here again I do not limit my invention to such an element as for example the spring could engage the lowermost round directly.
  • Guideways 21 are preferably formed in the side walls 20 of the magazine portion 11 to engage the rounds 15 as they move through the magazine portion 11.
  • retaining fingers 26 are formed to receive the topmost round as shown in FIGURES 2 and 3. When a round is needed pressure is applied on the head of the round as shown by arrow A (FIGURE 3) from the mechanism of the firearm to slide the round from under the fingers 26.
  • valve means for discharging the contents of the chamber for either a single unit discharge or a mass of contents.
  • Activator cap 12 including an end wall 22 and side walls 19, closes the lower end of magazine 11 and telescopes for a limited distance along the outer surface of magazine walls 20 toward exit opening 30 to apply the biasing force necessary to load the spring for urging the contents through the magazine chamber 11 as will be further described hereinafter.
  • Recesses 29 are provided in the side walls 19 of cap 12 to receive lugs 17 displaced from the side walls 20 of magazine chamber 11 as will also be described hereinafter.
  • the side walls 19 of the activator cap 12 are provided with a series of apertures or recesses 29 arranged in two zones on opposite walls one adjacent the bottom of the cap and the other adjacent the top. These recesses receive companion lugs 17 displaced from the walls of the magazine chamber 11.
  • the magazine chamber 11 is provided with an upper and lower zone of lugs 17 as most clearly shown in FIGURE 2.
  • the cap When the cap is in its lower position so that it will not bias the feeding spring 13 sufiiciently to move the contents of the magazine chamber the upper zone of recesses only receive the lower zone of lugs 17 while the lower zone of recesses is idle (see FIGURE 2).
  • the structure will operate with the lugs on the cap 12 and the recesses in the magazine chamber 11. Also while I have shown the lugs and recesses arranged in a plurality of parallel zones I do not wish to limit my invention to such specific configuration as other locations of the companion lugs and recesses may also be used.
  • the walls of the cap and magazine chamber may be non yieldable in which case the desired result may be obtained by making the lugs yieldable.
  • the side walls 19 and 20 of cap 12 and magazine chamber 11 respectively may be either or both composed of sufficiently flexible material to permit slight separation of the contacting surfaces for sliding the cap 12 along the magazine chamber 11 to activate the magazine.
  • I may also bevel the edge of recesses 29 as shown at 32 (FIGURE 4) to facilitate the moving of cap 12 to the position for activating the spring 13.
  • My invention may be utilized as follows.
  • the cap 12 is fitted over the lower end of magazine portion 11 so the lowest zone of lugs on the magazine 11 is received in the upper zone of recesses on the cap 12.
  • the spring 13 and the follower 14 are then inserted in the magazine portion 11.
  • the foregoing described assembly is thus charged with the necessary rounds of ammunition which compress spring 13 slightly.
  • the rounds 15 are held in position by the lips 26 formed at the top of the side walls 20 of magazine chamber 11.
  • the magazine chamber is now charged but not activated and can be stored indefinitely for shipment to the firing line.
  • the magazine and cap may be formed of inexpensive material they can be discarded when the magazine is empty.
  • My invention may be applied to similar structures where a spring element supplies the necessary operating power but need not be maintained in a loaded position until ready to be used.
  • spring mounting means including an elongated container for receiving a column of rounds, said container having a pair of opposite lateral sides and a pair of edge walls forming a tube with an open first end portion and an open exit second end portion, a pair of oppositely disposed fingers formed on said second end portion and extending longitudinally from said lateral side walls for engaging the leading round of said column and retaining same in a dispensing position, a cap member closing said first end portion, said cap member including an end wall, edge and sidewalls slidably mounted on the first end portion of said container, spring means mounted in said cap member and having a portion extending into said container, one end of said spring means operatively connected to the lower portion of one of the walls of the cap member, the opposite end of said spring means engaging the trailing round of said column for maintaining the leading round of said column against said fingers, and detent means operatively connected to said container and cap member for
  • said detent means comprises a plurality of cooperating recesses and lugs constructed and arranged on the container walls and cap member walls whereby certain lugs are insertable within respective recesses to hold the cap member in said first position while the remaining lugs remain free from engagement with any of the receseses, said remaining lugs being insertable within respective recesses when said cap member is advanced from said first position to said second position, said lugs being so disposed as to permit said cap member to be advanced from the first to second positions whereby the cap member is fixedly retained against unintended movement at said second position.
  • spring mounting means including an elongated container for receiving a column of rounds, said container having a pair of opposite lateral sides and a pair of edge walls forming a tube with an open first end portion and an open exit second end portion, a pair of oppositely disposed fingers formed on said second end portion and extending longitudinally from said lateral side walls for engaging the leading round of said column and retaining same in a dispensing position, a cap member closing said first end portion, said cap member including an end wall, edge and side walls slidably mounted on the first end portion of said container, spring means mounted in said cap member and having a portion extending into said container, one end of said spring means operatively connected to the lower portion of one of the walls of the cap member, follower means abutting the trailing round of said column, the opposite end of said spring means engaging the follower means for maintaining the leading round of said column against said oppositely disposed fingers,

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Closures For Containers (AREA)
US663868A 1967-08-28 1967-08-28 Cartridge magazine with a spring whose force against the cartridge may be selectively increased Expired - Lifetime US3443334A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66386867A 1967-08-28 1967-08-28

Publications (1)

Publication Number Publication Date
US3443334A true US3443334A (en) 1969-05-13

Family

ID=24663566

Family Applications (1)

Application Number Title Priority Date Filing Date
US663868A Expired - Lifetime US3443334A (en) 1967-08-28 1967-08-28 Cartridge magazine with a spring whose force against the cartridge may be selectively increased

Country Status (4)

Country Link
US (1) US3443334A (de)
BE (1) BE716396A (de)
DE (1) DE1703628A1 (de)
GB (1) GB1228641A (de)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3603020A (en) * 1970-03-27 1971-09-07 Us Army Magazine assembly with expendable cartridge container unit
US3732643A (en) * 1968-09-17 1973-05-15 Us Army Cartridge magazine
US4236338A (en) * 1979-02-27 1980-12-02 Musgrave Daniel D Magazine spring adjustment apparatus
EP0116006A2 (de) * 1983-02-01 1984-08-15 Pachmayr Gun Works, Inc. Patronenmagazin für Feuerwaffe
US4472900A (en) * 1982-12-22 1984-09-25 Howard William J Telescoping magazine
US4831761A (en) * 1988-06-09 1989-05-23 Kulakow Eric M Gun magazine and spring assembly
US4995179A (en) * 1989-11-09 1991-02-26 Switzer Robert D Cartridge clip
US5081778A (en) * 1989-11-09 1992-01-21 Switzer Robert D Cartridge clip
US5113605A (en) * 1990-02-06 1992-05-19 Dae Sam Co., Ltd. Length-variable magazine
US5697179A (en) * 1996-02-28 1997-12-16 Vanmoor; Arthur Cartridge clip assembly
US7533483B1 (en) * 2005-06-21 2009-05-19 The United States Of America As Represented By The Secretary Of The Army Composite magazine for chambering ammunition in a firearm
US20130255125A1 (en) * 2012-03-31 2013-10-03 Randy Bath Firearm Magazine Incorporating Spring Tension Relief Mechanism
US20160370138A1 (en) * 2015-06-17 2016-12-22 Albert ZAMM Spring-adjustment assembly of firearm magazine
US10113820B1 (en) * 2016-05-27 2018-10-30 Hugh Mills Jarratt Ammunition magazine device
US10393457B2 (en) * 2007-06-01 2019-08-27 Magpul Industries Corp. Ammunition magazine
US10527374B1 (en) 2019-04-16 2020-01-07 Robert August Anti-spring fatigue firearm magazine
US10648753B1 (en) * 2016-05-27 2020-05-12 Hugh Mills Jarratt Ammunition magazine device
US11131517B2 (en) * 2018-12-10 2021-09-28 John A. Coggins Magazine base plate assembly
US20210381787A1 (en) * 2018-12-10 2021-12-09 John A. Coggins Magazine Base Plate Assembly
USRE49104E1 (en) 2011-11-30 2022-06-14 Magpul Industries Corp. Ammunition magazine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620061A (en) * 1948-10-28 1952-12-02 Eduard Haas Pocket article dispensing container
US2620582A (en) * 1949-04-05 1952-12-09 Earl M Stukas Firearm magazine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620061A (en) * 1948-10-28 1952-12-02 Eduard Haas Pocket article dispensing container
US2620582A (en) * 1949-04-05 1952-12-09 Earl M Stukas Firearm magazine

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732643A (en) * 1968-09-17 1973-05-15 Us Army Cartridge magazine
US3603020A (en) * 1970-03-27 1971-09-07 Us Army Magazine assembly with expendable cartridge container unit
US4236338A (en) * 1979-02-27 1980-12-02 Musgrave Daniel D Magazine spring adjustment apparatus
US4472900A (en) * 1982-12-22 1984-09-25 Howard William J Telescoping magazine
EP0116006A2 (de) * 1983-02-01 1984-08-15 Pachmayr Gun Works, Inc. Patronenmagazin für Feuerwaffe
EP0116006A3 (de) * 1983-02-01 1985-06-19 Pachmayr Gun Works, Inc. Patronenmagazin für Feuerwaffe
US4831761A (en) * 1988-06-09 1989-05-23 Kulakow Eric M Gun magazine and spring assembly
WO1992012393A1 (en) * 1989-11-09 1992-07-23 Switzer Robert D Cartridge clip
US4995179A (en) * 1989-11-09 1991-02-26 Switzer Robert D Cartridge clip
US5081778A (en) * 1989-11-09 1992-01-21 Switzer Robert D Cartridge clip
US5113605A (en) * 1990-02-06 1992-05-19 Dae Sam Co., Ltd. Length-variable magazine
US5697179A (en) * 1996-02-28 1997-12-16 Vanmoor; Arthur Cartridge clip assembly
US7533483B1 (en) * 2005-06-21 2009-05-19 The United States Of America As Represented By The Secretary Of The Army Composite magazine for chambering ammunition in a firearm
US10393457B2 (en) * 2007-06-01 2019-08-27 Magpul Industries Corp. Ammunition magazine
USRE49104E1 (en) 2011-11-30 2022-06-14 Magpul Industries Corp. Ammunition magazine
US20130255125A1 (en) * 2012-03-31 2013-10-03 Randy Bath Firearm Magazine Incorporating Spring Tension Relief Mechanism
US20160370138A1 (en) * 2015-06-17 2016-12-22 Albert ZAMM Spring-adjustment assembly of firearm magazine
US10648753B1 (en) * 2016-05-27 2020-05-12 Hugh Mills Jarratt Ammunition magazine device
US10113820B1 (en) * 2016-05-27 2018-10-30 Hugh Mills Jarratt Ammunition magazine device
US11131517B2 (en) * 2018-12-10 2021-09-28 John A. Coggins Magazine base plate assembly
US20210381787A1 (en) * 2018-12-10 2021-12-09 John A. Coggins Magazine Base Plate Assembly
US10527374B1 (en) 2019-04-16 2020-01-07 Robert August Anti-spring fatigue firearm magazine

Also Published As

Publication number Publication date
BE716396A (de) 1968-11-04
DE1703628A1 (de) 1972-02-24
GB1228641A (de) 1971-04-15

Similar Documents

Publication Publication Date Title
US3443334A (en) Cartridge magazine with a spring whose force against the cartridge may be selectively increased
US9772152B1 (en) Ammunition storage and a magazine loading/ unloading device for weapons
US3789531A (en) Methods and devices for packing and loading ammunition
US2887811A (en) Cartridge clip for loading box magazines
US4614052A (en) Firearm magazine and magazine loader
US6000589A (en) Automatic clip holder
US20120192477A1 (en) Systems and methods for loading and unloading a magazine
US20150377573A1 (en) Simple and Special Telescoping Magazine Ammunition Loader and Unloader
US20140298704A1 (en) Special Telescoping Magazine Ammunition Loader and Unloader
US1994392A (en) Box magazine for automatic loading weapons
US4034644A (en) Firearm and magazine construction
US5361746A (en) Magazine for compressed gas single-shot bolt-action pellet shoulder guns
US8356440B2 (en) Magazine with shock absorbing tab
GB316645A (en) Automatic firearms
US3474560A (en) Caseless cartridge chamber-sleeve ejector and binary feed system
US2773325A (en) Magazine and cartridge container assembly
US5056252A (en) Firearm magazine
US9207029B2 (en) Ammunition magazine follower
US10126077B1 (en) Cartridge magazine loader
NO143956B (no) Ladeanordning bestaaende av magasin og ladestrimmel for haandskytevaapen.
US2191130A (en) Loading device
US11340032B2 (en) Ammunition packaging and loading device called a Pac and Load
US5905224A (en) Pulley belt magazine
US20180292152A1 (en) Internal and External Locking/latching magazine device and coupling ammunition container called a Lock and Load
US2981024A (en) Cartridge loader for a tubular magazine