US2053489A - Automatic firearm - Google Patents

Automatic firearm Download PDF

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Publication number
US2053489A
US2053489A US729052A US72905234A US2053489A US 2053489 A US2053489 A US 2053489A US 729052 A US729052 A US 729052A US 72905234 A US72905234 A US 72905234A US 2053489 A US2053489 A US 2053489A
Authority
US
United States
Prior art keywords
sear
disconnector
bolt
trip
pin
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
US729052A
Other languages
English (en)
Inventor
Norman George
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.)
AUTO ORDNANCE CORP
AUTO-ORDNANCE Corp
Original Assignee
AUTO ORDNANCE CORP
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 AUTO ORDNANCE CORP filed Critical AUTO ORDNANCE CORP
Priority to US75950A priority Critical patent/US2102332A/en
Application granted granted Critical
Publication of US2053489A publication Critical patent/US2053489A/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
    • F41A11/00—Assembly or disassembly features; Modular concepts; Articulated or collapsible guns
    • 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
    • F41A17/34—Magazine safeties
    • F41A17/36—Magazine safeties locking the gun automatically in a safety condition when the magazine is empty or removed
    • 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
    • F41A17/56—Sear safeties, i.e. means for rendering ineffective an intermediate lever transmitting trigger movement to firing pin, hammer, bolt or sear
    • 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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/30—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in bolt-action guns
    • F41A19/33—Arrangements for the selection of automatic or semi-automatic fire
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/66—Breech housings or frames; Receivers
    • 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
    • F41A9/38—Loading arrangements, i.e. for bringing the ammunition into the firing position
    • F41A9/39—Ramming arrangements
    • F41A9/40—Ramming arrangements the breech-block itself being the rammer
    • F41A9/41—Ramming arrangements the breech-block itself being the rammer pushing unbelted ammunition from a box magazine on the gun frame into the cartridge chamber

Definitions

  • Objects of the invention are to provide improved means for holding the frame on the receiver and an improved cooperative relationship between the mechanisms carried in the receiver and frame respectively. More particularly the invention affords fire-control mechanism which has fewer parts, which is more reliable and durable in 4use and which can be assembled and disassembled with greater facility.
  • the sear is made in two parts, one of which engages the bolt and the other of which is actuated by the trigger through the medium of a disconnector pivotally mounted on the trigger, and another part called a rocker is arranged to dlsengage the disconnector from the sear when the bolt advances.
  • a trip is also i provided to dsengage the disconnector from the sear when the last cartridge leaves the magazine.
  • the recontrol mechanism diii'ers from the aforesaid construction in one or more of the following characteristics.
  • the separate rocker for actuating the disconnector in the forward movement of the bolt is eliminated, the disconnector being actuated directly by the bolt.
  • the sear is controlled by the trip through the medium of the disconnector
  • the sear is controlled by the disconnector through the medium of the trip.
  • Fig. 1 is a top plan view ofthe frame of the gun removed from the receiver;
  • Fig. 2 is a vertical longitudinal section through plunger.
  • Fig. 3 is a similar view showing the parts set for similar operation but with the bolt moving 5 forward;
  • Fig. 4 is a similar view showing the firing mechanism set for full-automatic operation
  • Fig. 5 is a side elevation of the trip-disconnector assembly viewed from the opposite side 10 to that shown in Figs. 2, 3 and 4;
  • Fig. 6 is a side view of the pivot pin for the disconnector and trip
  • Fig. 7 is an end view of the pivot pin
  • Fig. 8 is a side View of the sear viewed from l5 the same side as in Figs. 2, 3 and 4;
  • Fig. 9 is a bottom plan view of the sear.
  • the particular embodiment of the invention chosen for the purpose of illustration comprises a receiver IOI, a bolt
  • the catch 2 is swung in a clockwise direction by means of a 30 plunger 5 which is prevented from dropping out when the gun is inverted by means of a pin 6 extending through a recess 'I in the side of the
  • the mechanism for automatically locking the bolt in breech-closing position and un- 35 locking the bolt in response to the breech pressure may be substantially like that disclosed in the aforesaid patent and therefore need not be described herein.
  • the fire-control mechanism, com- 40 prising the subject-matter of the present invention comprises a sear 8 pivoted in the frame at 9, a trigger IIJ pivoted on the pin 3 for swinging the sear in a clockwise direction to release the bolt through the medium of a trigger bar Il piv- 45 otally connected to the trigger at I 2 and having a shoulder I3 for engagement with the depending portion I4 of the sear.
  • a pin I5 is journaled in the frame with a handle I6 on the left-hand side of theframe to 50 swing the pin through
  • the pin I5 has a.
  • a trip I9 is'pivoted on the portion 20 of a pin 2l which is journaled in the opposite side walls of the frame
  • 'I'he trip I9 has a rearward portion 22 engaging the forward end of the trigger bar I I so that when the trip is rotated in clockwise direction around the pin 2
  • the forward end 24 of the trip I9 extends into the path of a lug 25 on the magazine follower 26 so that when the last cartridge leaves the magazine thelug 25 swings the trip in clockwise direction to disengage the trigger bar from the sear.
  • the gun is provided with a disconnector 30 which is pivoted at its forward end on the eccentric portion 4
  • the disconnector is provided with a convex cam surface 34 which, when the gun is set for semi-automatic operation, projects into the path of the bolt so that when the bolt moves forward it depresses the rearward end of the disconnector, swinging it in a clockwise direction about the pivot 3
  • An automatic firearm comprising a frame, a bolt,'a sear, trigger means for disengaging the sear from the bolt, a pivoted trip for disengaging the trigger means from the sear, a pivoted disconnector responsive to movement of the bolt for disengaging the trigger means from the sear, a common pivot pin for said trip and disconnector, the disconnector being mounted on an eccentric portion of said pin, and a handle outside the frame for rotating the pin to move the disconnector out of the path of the bolt for full-automatic operation.
  • An automatic firearm comprising a frame, a bolt, a sear, trigger means for disengaging the sear from the bolt, a pivoted trip for disengaging the trigger means from the sear, a pivoted disconnector responsive to movement of the bolt ifor disengaging the trigger means from the seat, and a common pivot pin for said trip and disconnector, the disconnector being mounted on an eccentric portion of said pin and having a cam- .Iming interconnection with the trip so that when the pin is rotated back and forth the disconnector is moved into and out of the path of the bolt.
  • An automatic rearm comprising a frame. a magazine, a bolt, a sear, trigger means for disengaging the sear from the bolt, a trip pivoted on said frame for disengaging the trigger means from the sear, and a disconnector respt-nsive to movement of the bolt for actuating said trip, said trip having an integral portion actuated directly by the magazine when the last cartridge leaves the magazine.
  • An automatic rearm comprising a frame, a magazine, a bolt, a sear, trigger means for disengaging the sear from the bolt, a pivoted trip for disengaging the trigger means from the sear, a pivoted disconnector responsive to movement of the bolt for causing the trip to disengage the trigger means from the sear, a common pivot pin for said trip and disconnector, and means for actuating the trip when the magazine vis emptied:
  • An auto'matic firearm comprising a frame, a magazine, a bolt, a sear, trigger means for disl engaging the sear from the bolt, a pivoted trip for disengaging the trigger means from the sear, a pivoted disconnector responsive to movement of the bolt for disengaging the trigger means from the sear, a common pivot pin for said trip and disconnector, the disconnector being mounted on an eccentric portion of said pin, and a i handle outside the frame for rotating the pin to move the disconnector out of the path of the bolt for full-automatic operation. a common pivot pin for said trip and disconnector. and means for actuating the trip when the magazine is emptied.
  • An automatic firearm comprising a frame. a magazine. a bolt, a sear, trigger means for disengaging the sear from the bolt, a pivoted trip for disensains the trigger means from the sear, a pivoted disconnector responsive to movement of the bolt for disengaging the trigger means from the sear, and a common pivot pin for said trip and disconnector.
  • said trip having a portion actuated by the magazine when the last cartridge leaves the magazine.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Catching Or Destruction (AREA)
  • Toys (AREA)
US729052A 1934-05-24 1934-06-05 Automatic firearm Expired - Lifetime US2053489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US75950A US2102332A (en) 1934-06-05 1936-04-23 Firearm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15534/34A GB422675A (en) 1934-05-24 1934-05-24 Improvements in or relating to automatic firearms

Publications (1)

Publication Number Publication Date
US2053489A true US2053489A (en) 1936-09-08

Family

ID=10060818

Family Applications (1)

Application Number Title Priority Date Filing Date
US729052A Expired - Lifetime US2053489A (en) 1934-05-24 1934-06-05 Automatic firearm

Country Status (6)

Country Link
US (1) US2053489A (xx)
BE (1) BE403386A (xx)
CH (1) CH178591A (xx)
DE (1) DE672473C (xx)
FR (1) FR773715A (xx)
GB (1) GB422675A (xx)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701504A (en) * 1948-11-10 1955-02-08 Wilbur A Schaich Feeding mechanism for automatic firearms
US2758404A (en) * 1950-05-23 1956-08-14 Tabor Robert Braxton Gun firing mechanism
US5018292A (en) * 1990-01-02 1991-05-28 West Dennis E Linkage assembly for trigger/sear assemblies
US7617628B2 (en) * 2004-12-22 2009-11-17 Smith & Wesson Corp. Fire control mechanism for a firearm
US20120174454A1 (en) * 2011-01-07 2012-07-12 Sturm, Ruger & Company, Inc. Lockable safety for firearm
US9303938B2 (en) 2013-07-30 2016-04-05 Jason P. Hiscock Blank chamber and housing
US9857132B2 (en) 2014-01-07 2018-01-02 Pro Mag Mfg., Inc. Rifle stock

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9952011B2 (en) 2015-12-04 2018-04-24 22 Evolution Llc Rotationally actuated and dual pin supported linkage incorporated into a lower receiver of a firearm for establishing a last shot hold open condition with an upwardly displaceable magazine follower

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701504A (en) * 1948-11-10 1955-02-08 Wilbur A Schaich Feeding mechanism for automatic firearms
US2758404A (en) * 1950-05-23 1956-08-14 Tabor Robert Braxton Gun firing mechanism
US5018292A (en) * 1990-01-02 1991-05-28 West Dennis E Linkage assembly for trigger/sear assemblies
US7617628B2 (en) * 2004-12-22 2009-11-17 Smith & Wesson Corp. Fire control mechanism for a firearm
US20120174454A1 (en) * 2011-01-07 2012-07-12 Sturm, Ruger & Company, Inc. Lockable safety for firearm
US8464455B2 (en) * 2011-01-07 2013-06-18 Sturm, Ruger & Company, Inc. Lockable safety for firearm
US9303938B2 (en) 2013-07-30 2016-04-05 Jason P. Hiscock Blank chamber and housing
US9857132B2 (en) 2014-01-07 2018-01-02 Pro Mag Mfg., Inc. Rifle stock

Also Published As

Publication number Publication date
FR773715A (fr) 1934-11-24
DE672473C (de) 1939-03-03
BE403386A (xx) 1934-06-30
GB422675A (en) 1935-01-16
CH178591A (de) 1935-07-31

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