US2380455A - Automatic firearm - Google Patents

Automatic firearm Download PDF

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Publication number
US2380455A
US2380455A US441159A US44115942A US2380455A US 2380455 A US2380455 A US 2380455A US 441159 A US441159 A US 441159A US 44115942 A US44115942 A US 44115942A US 2380455 A US2380455 A US 2380455A
Authority
US
United States
Prior art keywords
breech block
contact
cartridge
circuit
magnet
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
US441159A
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English (en)
Inventor
Lippert Hanns
Hepperle Erwin
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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 US2380455A publication Critical patent/US2380455A/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
    • F41A17/00—Safety arrangements, e.g. safeties
    • F41A17/14—Double-loading prevention
    • 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
    • F41A9/53—Charged-condition indicators, i.e. indicating the presence of a cartridge in the cartridge chamber

Definitions

  • the known double loading safety devices essentially comprise a feeler member which mechanically locks the breech block movement if a spent cartridge case remains in the cartridge chamber.
  • the object of the present invention is to provide an automatic firearm in which these difficulties are avoided.
  • an automatic firearm is provided with an electric double loading safety device using the trigger as a locking mechanism for the movement of the breech block mass, in which the feeler member at the cartridge chamber controls a contact or switch which is situated in the circuit of an electromagnet actuating the trigger and, in the path of the breech block, there is provided a further contact or switch controlled by the said breech block which can close the circuit of the electromagnet when the contact of the feeler member is cut out.
  • Figure 1 is a diagrammatic representation of t-e firearm with tre cartridge case not extracted from the chamber
  • Figure 2 is the circuit diagram corresponding to the position of the parts shown in Figure 1:
  • Figure 3 is a view similar to Fig. 1 showing the firearm when the cartridge case is being extracted in the normal way;
  • Figure 4 is the circuit diagram corresponding to the position of the parts shown in Figure 3.
  • Figure 5 is a circuit diagram for explaining the action of the contact or switch controlled by the breech block.
  • the barrel 2 with its cartridge chamber is fixed in the breech casing l by means of a bayonet joint 3.
  • the reciprocating breech block 4 is rovided at its front end with an extractor claw 5 and at its rear end with a hook 6 with which a hook I is adapted to engage, the hook I being pressed down onto the hook 6 by a looking member 9 arranged to turn on a pin 8.
  • the locking member 9 is held in its locking position by a spring In and it is connected to a magnet l2 by a rod II.
  • a pin l3 acting as the feeler member of the double loading safety device and a pin 15 arranged in an insulating ring l4 acts upon the pin 13 in order to control the movement of a spring contact I6 toward and from a contact IT.
  • the contacts l6 and I1 are situated in a housing arranged on the breech casing.
  • An insulated contact pin I9 and a counter contact 20 are also movably arranged on the breech casing, the contact pin and the counter contact being situated in a housing 2
  • the trigger contact is indicated at 22, 23 is the current source, and a spent cartridge case is shown at 24.
  • the circuit of the individual contacts is as follows: From the current source 23 one pole leads to the trigger contact 22 through a lead 25 and thence to the magnet i2. The other pole of the source 23 is connected to the contact 20 through a lead 26 and to the contact I! through a lead 28. The contacts l6 and H! are connected to the magnet l2 through the leads 2! and 29.
  • the manner of operation of the double loading safety device is as follows: Assuming in all cases that the trigger contact 22 is closed and the firearm therefore is firing continuously, at the beginning of the firing no cartridge is in the cartridge chamber and hence the contact I6 lies on the contact l1.
  • the trigger contact 22 is depressed the circuit is closed through the leads 2t, 21, 28 and 29, the magnet I2 is energized and the breech block 4 is released by the rocking of the bottom part of the member 9 to the left as shown in Figure 3, the hooks 6 and I then disengaging.
  • the positions of the contacts are shown in Figure 4.
  • the breech block travels forwards and inserts a cartridge into the cartridge chamber, whereupon the contact I6 is lifted from the contact I!
  • An electrically operated double loading safety device'i'or automatic firearms comprising. in combination with the cartridge chamber and the breechblock of .tlie firearm, locking mechanism ri' 'r r iea'sebiy holding the breech block in recoil positiiih, an electro-magnet arranged to control sai flocking mechanism, a. feeler member at the c iqtridge chamber-in position to be actuated by t e. insertioneand extraction of a cartridge, an
  • the locking mechanism includes a locking hook arranged to be actuated by the electro-magnet, the breech block having a hook arranged to be engaged by the first mentioned hook, the locking mechanism acting, by engagement of the hooks, to lock the breech block against forwardmovement when the magnet circuit is open.
  • a safety device for automatic firearms according to claim 1, wherein the feeler member at the cartridge chamber comprises a slidable pin which normally projects into the chamber, and a second, insulated pin actuated by the first pin and arranged to control the associated switch.
  • a safety device for automatic firearms according to claim 1, wherein the switch operated by the breech block is connected to an insulated pin which projects into the breech casing in the path of the breech block.
  • An electrically-operated safety mechanism for automatic firearms comprisingyin combination with the breech block and cartridge chamber a of the firearm, locking mechanism for holding the breech block in its rearward position, an electromagnet arranged to release the locking mechanism upon energization thereof, means for returning the locking mechanism'to breech block locking position upon de-ener'gization of the electro-magnet, a pair of contacts at the cartridge chamber in position to be actuated by the in- I sertion and extraction of a cartridge and a second to close the circuit of the electro-magnet when the switch controlled'by the first feeler member is opened.
  • An electrically operated double loading safety device for automatic firearms comprising, in combination with the cartridge chamber and the breech block of the firearm, locking mechanism for releasably holding the breech block in recoil position, an electromagnet arranged to control said locking mechanism, a ieeler member at the cartridge chamber and responsive to the presence and absence of a cartridge in such chamber, an electric switch controlled by said teeler member and arranged in the circuit of the electro-ma'gnet, said switch, being normally closed in the absence of a cartridge in the chamber but being opened when av partridge is inserted into the chamber, a second feeler member arranged in the path of the breech block, and a second switch, controlled by said second feeler member, said last mentioned switch being arranged to open and close said circuit and being normally open when the block is in retracted position but being closed by the breech block when the latter is in an advanced position, the arrangement being such that the electromagnet is deenergized if a cartridge case is not extracted from the chamber after firing
  • a safety device for automatic firearms including a pair of contacts arranged at the trigger and in series with the contacts at the cartridge chamber, whereby upon closing of the trigger contacts, the electro-magnet becomes energized.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
US441159A 1941-07-12 1942-04-30 Automatic firearm Expired - Lifetime US2380455A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH2380455X 1941-07-12

Publications (1)

Publication Number Publication Date
US2380455A true US2380455A (en) 1945-07-31

Family

ID=4568890

Family Applications (1)

Application Number Title Priority Date Filing Date
US441159A Expired - Lifetime US2380455A (en) 1941-07-12 1942-04-30 Automatic firearm

Country Status (3)

Country Link
US (1) US2380455A (de)
CH (1) CH219690A (de)
FR (1) FR883449A (de)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2440723A (en) * 1945-06-06 1948-05-04 United Shoe Machinery Corp Apparatus for launching rockets from airplanes
US2448024A (en) * 1945-03-15 1948-08-31 William T Golden Machine gun firing rate control mechanism
US2460384A (en) * 1944-05-25 1949-02-01 United Shoe Machinery Corp Gun-loading mechanism
US2647442A (en) * 1945-12-18 1953-08-04 Us Sec War Gun shell feeding mechanism
US2750848A (en) * 1954-04-16 1956-06-19 Charles P Boyer Double feed prevention device
US2814235A (en) * 1954-05-21 1957-11-26 Joseph L Johnston Feed switch
US2820401A (en) * 1954-05-17 1958-01-21 Frank A Pachmayr Machine gun anti-jamming device
CH667912A5 (de) * 1985-12-03 1988-11-15 Oerlikon Buehrle Ag Doppelladesicherung an einer patronenzufuehrvorrichtung fuer eine automatische feuerwaffe.
US7681483B1 (en) * 2005-05-04 2010-03-23 American Apex Corporation Sub-caliber in-bore weapons training apparatus
US11209232B2 (en) * 2019-01-18 2021-12-28 Gerhard Kirstein Semi-automatic or fully automatic firearm

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701985A (en) * 1951-04-20 1955-02-15 Marshall T Smith Blast actuated safety for rocket launchers
DE19638572C2 (de) * 1996-09-20 2002-12-12 Rheinmetall W & M Gmbh Vorrichtung zur Überwachung des Ladezustandes einer Vorderladerwaffe

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460384A (en) * 1944-05-25 1949-02-01 United Shoe Machinery Corp Gun-loading mechanism
US2448024A (en) * 1945-03-15 1948-08-31 William T Golden Machine gun firing rate control mechanism
US2440723A (en) * 1945-06-06 1948-05-04 United Shoe Machinery Corp Apparatus for launching rockets from airplanes
US2647442A (en) * 1945-12-18 1953-08-04 Us Sec War Gun shell feeding mechanism
US2750848A (en) * 1954-04-16 1956-06-19 Charles P Boyer Double feed prevention device
US2820401A (en) * 1954-05-17 1958-01-21 Frank A Pachmayr Machine gun anti-jamming device
US2814235A (en) * 1954-05-21 1957-11-26 Joseph L Johnston Feed switch
CH667912A5 (de) * 1985-12-03 1988-11-15 Oerlikon Buehrle Ag Doppelladesicherung an einer patronenzufuehrvorrichtung fuer eine automatische feuerwaffe.
US7681483B1 (en) * 2005-05-04 2010-03-23 American Apex Corporation Sub-caliber in-bore weapons training apparatus
US11209232B2 (en) * 2019-01-18 2021-12-28 Gerhard Kirstein Semi-automatic or fully automatic firearm

Also Published As

Publication number Publication date
CH219690A (de) 1942-02-28
FR883449A (fr) 1943-07-05

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