US2596293A - Cartridge feeding mechanism for the magazines of automatic firearms - Google Patents

Cartridge feeding mechanism for the magazines of automatic firearms Download PDF

Info

Publication number
US2596293A
US2596293A US788890A US78889047A US2596293A US 2596293 A US2596293 A US 2596293A US 788890 A US788890 A US 788890A US 78889047 A US78889047 A US 78889047A US 2596293 A US2596293 A US 2596293A
Authority
US
United States
Prior art keywords
cartridges
magazine
magazines
cartridge
feeding
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
US788890A
Inventor
Schalkli Otto
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.)
Rheinmetall Air Defence AG
Original Assignee
Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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 Werkzeugmaschinenfabrik Oerlikon Buhrle AG filed Critical Werkzeugmaschinenfabrik Oerlikon Buhrle AG
Application granted granted Critical
Publication of US2596293A publication Critical patent/US2596293A/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
    • F41A9/73—Drum magazines
    • F41A9/75—Drum magazines having a spiral cartridge channel
    • 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
    • F41A9/50—External power or control systems
    • F41A9/51—Boosters, i.e. externally-powered motors
    • 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
    • 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

  • Cartridge feeding involves certain difficulties owing, for instance, on the one hand, to the substantial weight of each individual cartridge in weapons using ammunition of 20 mm. or larger size, and, on the other hand, to the rate of fire in modern weapons being close to, or even reaching, 1000 rounds per minute, so that substantial power is required to ensure the acceleration and regular feeding of the individual cartridges within the available time.
  • the present invention provides a cartridge feeding mechanism for automatic fire arms, in which the cartridges are piled up in a magazine and. are under the action of a power source which exerts pressure on the cartridges towards the magazine outlet, measures being provided to ensure the regular feeding of the cartridges even at maximum firing rates.
  • these measures provide for a feeding appliance which is located close to the magazine outlet and is under the pressure of an additional power source.
  • the feeding appliance may be actuated by a spring which is tensioned when the magazine is being filled, or electricalmeans, for instance an electromotor or electro-magnets, maybe provided for this purpose.
  • the feeding appliance can suitably consist of a star-shaped member adapted to engage the cartridges.
  • Figure 4 shows the magazine outlet in section, the breech block being in its rearmost position
  • Figure 5 is a view similar to Figure 4 when the breech block has moved forwards from its rearmost position to uncover the outlet.
  • the cartridges 2 are arranged in a channel 3 of the magazine I, the filling of which is effected in the usual manner.
  • the feeder or follower 4 is under the pressure of a spring 5 and engages behind the rearmost cartridge, being tensioned when the cartridges are introduced into the magazine.
  • the channel 3 which is spiral or worm-shaped is completely filled with cartridges.
  • a star-shaped member 6 is fitted close to the magazine outlet and is connected by a pinion l with a toothed wheel 8, mounted on the same shaft as a spring 9 which, as a result of the rotation of the star-shaped member 5, is tensioned as and when the cartridges are introduced into the magazine.
  • At the magazine outlet locking pawls ID are fitted.
  • the last three cartridges are pushed forward by the starshaped member 6, driven by the spring 9, as soon as a, cartridge is introduced into the cartridge chamber, and the breech block has travelled rearward to such an extent as to leave the feedin opening free.
  • the spring 9 has no difficulty in accelerating the required three cartridges even in the shortest time, thus ensuring even at maximum firing rate that the cartridges shall be quickly and reliably fed.
  • a time interval remains in which the magazine spring 5 is easily able to bring up all cartridges piled up on top of one another.
  • the feeding means which in the constructional example are represented by a star-shaped member, need not in all circumstances be driven by a spring 9.
  • the driving power can also be supplied by electrical means, for instance an electro-motor or electro-magnets.
  • the feeding of the cartridges piled up in the magazine can also be effected by the said electrical means, instead of by a spring.
  • a cartridge-feeding device for automatic firearms comprising, in combination, a magazine having a spiral passage formed therein for the cartridges, a spring-tensioned follower located within said magazine at the. inner end of said passage and adapted to eject said cartridgesout of the outer end of said passage, the tension of said follower feeding all of said cartridges to said outer end, a separate cartridge-shifting device located in said magazine adjacent said outer end and adapted to engage cartridges-adjacent said outer end to accelerate the ejection thereof, and a separate spring connected; with said car; tridge-shifting device to operate said cartridge,- shifting device and thereby accelerate the removal of the cartridgesfrom said passage.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • De-Stacking Of Articles (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Description

May 13, 1952 o. SCHALKLI 2,596,293
CARTRIDGE FEEDING MECHANISM FOR THE MAGAZINES OF AUTOMATIC FIREARMS Filed Nov. 29, 1947 INVENTOR: 0&0 Sc/mZ/(lc' Patented May 13, 1952 UNITED STATS r QFFICE CARTRIDGE FEEDING MECHANISM FOR THE MAGAZINES OF AUTOMATIC FIREARMS Otto Schiilkli, Zurich, Switzerland, assignor to Machine Tool Works Oerlikon, Administration Company, Zurich-Oerlikon,
Swiss company Switzerland, a
Application November 29, 1947, Serial N 0. 788,890 In Switzerland November 2'7, 1946 Section 1, Public Law 690, August 8, 1946 Patent expires November 27, 1956- 1 Claim.
In automatic fire arms the cartridges are, as a rule, fed out of magazines set up on the weapon, or they are inserted in belts conveyed to the weapon. Cartridge feeding, however, involves certain difficulties owing, for instance, on the one hand, to the substantial weight of each individual cartridge in weapons using ammunition of 20 mm. or larger size, and, on the other hand, to the rate of fire in modern weapons being close to, or even reaching, 1000 rounds per minute, so that substantial power is required to ensure the acceleration and regular feeding of the individual cartridges within the available time.
In cartridge feeding from magazines the individual cartridges are pushed towards the outlet by a spring which is pretensioned when the magazine is being filled. Practice has shown, however, that the spring pressure exerted on the cartridges is not sufiicient to accelerate and feed all the cartridges within the time available during the excess breech block travel and the consequent opening of the feeding aperture. This occurs chiefly at high firing rates. On the other hand, belt feeding has not proved satisfactory for ammunition of 20 mm. and more, since in this case also the belt drive requires substantial power.
The present invention provides a cartridge feeding mechanism for automatic fire arms, in which the cartridges are piled up in a magazine and. are under the action of a power source which exerts pressure on the cartridges towards the magazine outlet, measures being provided to ensure the regular feeding of the cartridges even at maximum firing rates. According to the present invention, these measures provide for a feeding appliance which is located close to the magazine outlet and is under the pressure of an additional power source. By way'of example, the feeding appliance may be actuated by a spring which is tensioned when the magazine is being filled, or electricalmeans, for instance an electromotor or electro-magnets, maybe provided for this purpose. The feeding appliance can suitably consist of a star-shaped member adapted to engage the cartridges.
The accompanying drawing shows one constructional form of the invention by way of example.
On the drawing:
Figure 4 shows the magazine outlet in section, the breech block being in its rearmost position; and
Figure 5 is a view similar to Figure 4 when the breech block has moved forwards from its rearmost position to uncover the outlet.
In known manner, the cartridges 2 are arranged in a channel 3 of the magazine I, the filling of which is effected in the usual manner. The feeder or follower 4 is under the pressure of a spring 5 and engages behind the rearmost cartridge, being tensioned when the cartridges are introduced into the magazine. The channel 3 which is spiral or worm-shaped is completely filled with cartridges. A star-shaped member 6 is fitted close to the magazine outlet and is connected by a pinion l with a toothed wheel 8, mounted on the same shaft as a spring 9 which, as a result of the rotation of the star-shaped member 5, is tensioned as and when the cartridges are introduced into the magazine. At the magazine outlet locking pawls ID are fitted.
The operation of the mechanism described above is briefly as follows:
In the constructional example shown the last three cartridges are pushed forward by the starshaped member 6, driven by the spring 9, as soon as a, cartridge is introduced into the cartridge chamber, and the breech block has travelled rearward to such an extent as to leave the feedin opening free. It is obvious that the spring 9 has no difficulty in accelerating the required three cartridges even in the shortest time, thus ensuring even at maximum firing rate that the cartridges shall be quickly and reliably fed. In order to bring up the other cartridges piled. up in the magazine a time interval remains in which the magazine spring 5 is easily able to bring up all cartridges piled up on top of one another.
It goes without saying that the feeding means, which in the constructional example are represented by a star-shaped member, need not in all circumstances be driven by a spring 9. As already mentioned, the driving power can also be supplied by electrical means, for instance an electro-motor or electro-magnets. The feeding of the cartridges piled up in the magazine can also be effected by the said electrical means, instead of by a spring.
The use of the device according to the present invention eliminates the difficulties referred to, above. Indeed, the fact that even at the maxi. mum firing rate onl a few cartridges have to be accelerated in the short time interval available.
3 ensures in all cases reliable feeding of the cartridges.
I claim:
A cartridge-feeding device for automatic firearms, comprising, in combination, a magazine having a spiral passage formed therein for the cartridges, a spring-tensioned follower located within said magazine at the. inner end of said passage and adapted to eject said cartridgesout of the outer end of said passage, the tension of said follower feeding all of said cartridges to said outer end, a separate cartridge-shifting device located in said magazine adjacent said outer end and adapted to engage cartridges-adjacent said outer end to accelerate the ejection thereof, and a separate spring connected; with said car; tridge-shifting device to operate said cartridge,- shifting device and thereby accelerate the removal of the cartridgesfrom said passage.
OTTO SCI-IALKL I.
4 REFERENCES CITED The following references. are of record in the file of this patent:
UNITED STATES PATENTS
US788890A 1946-11-27 1947-11-29 Cartridge feeding mechanism for the magazines of automatic firearms Expired - Lifetime US2596293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH647768X 1946-11-27

Publications (1)

Publication Number Publication Date
US2596293A true US2596293A (en) 1952-05-13

Family

ID=4525892

Family Applications (1)

Application Number Title Priority Date Filing Date
US788890A Expired - Lifetime US2596293A (en) 1946-11-27 1947-11-29 Cartridge feeding mechanism for the magazines of automatic firearms

Country Status (4)

Country Link
US (1) US2596293A (en)
DE (1) DE844562C (en)
FR (1) FR956038A (en)
GB (1) GB647768A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756637A (en) * 1951-02-17 1956-07-31 Brev Aero Mecaniques S A Soc Cartridge magazines for automatic firearms
US3382765A (en) * 1965-08-10 1968-05-14 Avco Corp Multiple drum-type magazine of particular utility with rocket-boosted ammunition and featuring radially inward helical feed toward a common reciprocal feed slide
US8291806B2 (en) * 2010-12-27 2012-10-23 Paul J Rael Helical ammunition magazine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL227509A (en) * 1957-05-16
EP0111780B1 (en) * 1982-12-22 1988-01-20 Werkzeugmaschinenfabrik Oerlikon-Bührle AG Device for feeding ammunition from a drum magazine to a gun

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1314013A (en) * 1919-08-26 Cartridge-feeding device
US1563052A (en) * 1925-07-24 1925-11-24 Vollmer Heinrich Cartridge-feed mechanism
US1596178A (en) * 1925-01-09 1926-08-17 Haubroe Werner Christia Lassen Drum-shaped cartridge magazine for machine guns or the like
DE527675C (en) * 1927-09-16 1931-06-20 Siemens Schuckertwerke Akt Ges Cartridge delivery device for automatic rifles
US2161696A (en) * 1935-10-02 1939-06-06 Blacker Latham Valenti Stewart Ammunition magazine
GB539414A (en) * 1939-11-16 1941-09-10 William Denis Kendall Improvements in magazines for automatic firearms
US2342065A (en) * 1942-02-09 1944-02-15 Bell Aircraft Corp Oednance
US2394606A (en) * 1943-02-17 1946-02-12 Gazda Antoine Automatic feed mechanism for loading ordnance, tools, and the like
US2436404A (en) * 1942-05-27 1948-02-24 Hughes Tool Co Ammunition booster for automatic guns

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1314013A (en) * 1919-08-26 Cartridge-feeding device
US1596178A (en) * 1925-01-09 1926-08-17 Haubroe Werner Christia Lassen Drum-shaped cartridge magazine for machine guns or the like
US1563052A (en) * 1925-07-24 1925-11-24 Vollmer Heinrich Cartridge-feed mechanism
DE527675C (en) * 1927-09-16 1931-06-20 Siemens Schuckertwerke Akt Ges Cartridge delivery device for automatic rifles
US2161696A (en) * 1935-10-02 1939-06-06 Blacker Latham Valenti Stewart Ammunition magazine
GB539414A (en) * 1939-11-16 1941-09-10 William Denis Kendall Improvements in magazines for automatic firearms
US2342065A (en) * 1942-02-09 1944-02-15 Bell Aircraft Corp Oednance
US2436404A (en) * 1942-05-27 1948-02-24 Hughes Tool Co Ammunition booster for automatic guns
US2394606A (en) * 1943-02-17 1946-02-12 Gazda Antoine Automatic feed mechanism for loading ordnance, tools, and the like

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756637A (en) * 1951-02-17 1956-07-31 Brev Aero Mecaniques S A Soc Cartridge magazines for automatic firearms
US3382765A (en) * 1965-08-10 1968-05-14 Avco Corp Multiple drum-type magazine of particular utility with rocket-boosted ammunition and featuring radially inward helical feed toward a common reciprocal feed slide
US8291806B2 (en) * 2010-12-27 2012-10-23 Paul J Rael Helical ammunition magazine
US8813630B2 (en) 2010-12-27 2014-08-26 Paul J Rael Helical ammunition magazine

Also Published As

Publication number Publication date
GB647768A (en) 1950-12-20
FR956038A (en) 1950-01-23
DE844562C (en) 1952-07-21

Similar Documents

Publication Publication Date Title
US1784355A (en) Automatic firearm with two cartridge magazines
GB573429A (en) Improvements in or relating to magazines for fire arms
US2596293A (en) Cartridge feeding mechanism for the magazines of automatic firearms
US2453786A (en) Feed mechanism for rapid-fire guns
US3060809A (en) Automatic high-speed fire-arm
GB976790A (en) Improvements in automatic firearm feed mechanisms
US2489428A (en) Magazine for machine guns
US2484104A (en) Cartridge feed device for automatic firearms
US2113202A (en) Automatic gun
US2756637A (en) Cartridge magazines for automatic firearms
US2383998A (en) Magazine for firearms
GB566164A (en) Improvements in or relating to cartridge feeding mechanism for an automatic gun
US863101A (en) Automatic gun
GB722226A (en) Ammunition feed mechanism for automatic guns
US2417080A (en) Cartridge feed system
US2098264A (en) Cartridge stop for machine guns
US1375322A (en) Magazine for hand-firearms
US2793567A (en) Side ejection arrangement
US2437728A (en) Rotary magazine for toy guns
GB875673A (en) Improvements in and relating to a loading device for automatic firearms having a revolver drum
US2603130A (en) Cartridge link guide
US2626475A (en) Cartridge carrier for repeating shotguns
GB305596A (en) Improvements in cartridge feeding devices for automatic firearms
US2998757A (en) Control mechanism for automatic firearms with revolver drum
US2429831A (en) Magazine for automatic firearms