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GB511365A - Improvement in firearms - Google Patents

Improvement in firearms

Info

Publication number
GB511365A
GB511365A GB4845/38A GB484538A GB511365A GB 511365 A GB511365 A GB 511365A GB 4845/38 A GB4845/38 A GB 4845/38A GB 484538 A GB484538 A GB 484538A GB 511365 A GB511365 A GB 511365A
Authority
GB
United Kingdom
Prior art keywords
bolt
recoil
barrel
receiver
breech
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
Application number
GB4845/38A
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
Publication of GB511365A publication Critical patent/GB511365A/en
Expired legal-status Critical Current

Links

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
    • F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
    • F41A15/12—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action 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
    • F41A3/00—Breech mechanisms, e.g. locks
    • F41A3/12—Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
    • F41A3/14—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively
    • F41A3/16—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
    • F41A3/26—Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks semi-automatically or automatically operated, e.g. having a slidable bolt-carrier and a rotatable bolt
    • 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
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/02—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

511,365. Automatic firearms. JOHNSON, M. M. Feb. 16, 1938, No. 4845. Convention date, Jan 5. [Class 119] An automatic tirearm of the type having a breechbolt fitted with an extractor and breech mechanism permitting automatic recoil of the bolt when the firearm is discharged, has means for imparting a kick to the bolt substantially as it leaves the firing chamber, in order to facilitate extraction. The invention is described as applied to a firearm having a receiver 1 and a barrel 2 which has a short recoil in the receiver, the barrel being screwed to a toothed ring 14 with which teeth 15 on the breech-bolt 5 may be locked or disengaged by angular movement of the bolt. The bolt has a roller 20 guided in a longitudinal groove in the receiver so that during the recoil of the bolt and the barrel the bolt is rotated and unlocked, the bolt then recoiling alone without further rotation. The initial rotation of the bolt, to enable the roller 20 to enter the longitudinal groove is effected by a cam piece 16 on the bolt engaging a corresponding cam surface 23 on an abutment 24 carried by a sliding cover 25 on the receiver, the cover being secured by a screw 27 in such position that the abutment 24 contacts with a fixed abutment 28 on the receiver. A heavy plunger 10 guided longitudinally by the roller 21 has a cam face 18 engaged by the cam 16 on the bolt, so that during the initial recoil of the barrel and bolt the turning of the bolt imparts longitudinal motion to the plunger 10, relatively to the bolt, whereby, substantially at the instant when the bolt is unlocked and commences to recoil independently of the barrel, the rear end of the member 17 strikes a shoulder 29 on the bolt, this impact ensuring that the extractor 6 in the bolt will start the withdrawal of the empty cartridge case. The plunger 10 is linked at its rear end to the member 11 coupled to the recoil spring, so that at the end of the return movement, the cam face 18 may rotate the bolt into locked position. An ejector 7 with a nose 30 in a groove in the breech-bolt is rocked by a cam formation at the fore end of the breech-bolt, to eject the cartridge case laterally. A handle 9 is fitted for manual control of the breech-bolt. Specification 486,907 is referred to.
GB4845/38A 1938-01-05 1938-02-16 Improvement in firearms Expired GB511365A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US183469A US2146743A (en) 1938-01-05 1938-01-05 Firearm

Publications (1)

Publication Number Publication Date
GB511365A true GB511365A (en) 1939-08-17

Family

ID=22672925

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4845/38A Expired GB511365A (en) 1938-01-05 1938-02-16 Improvement in firearms

Country Status (5)

Country Link
US (1) US2146743A (en)
BE (1) BE431675A (en)
FR (1) FR847565A (en)
GB (1) GB511365A (en)
NL (1) NL52759C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503596A (en) * 1944-05-19 1950-04-11 Gen Motors Corp Metal structure
US3057100A (en) * 1947-01-09 1962-10-09 United Shoe Machinery Corp Extractor for automatic guns
US2655837A (en) * 1947-09-16 1953-10-20 Melvin M Johnson Jr Automatic gun
US3273460A (en) * 1965-06-14 1966-09-20 James D Mason Firearm with gas operated breech block unlocking means
DE19616397C2 (en) * 1996-04-24 2000-04-20 Heckler & Koch Gmbh Self-loading handgun
US5911173A (en) * 1996-10-18 1999-06-08 Westrom; Mark A. Breech bolt assembly for a firearm
CA2485710C (en) 2002-05-10 2011-04-19 Karl R. Lewis Monolithic rail platform and bolt assemblies for a firearm
US7726058B2 (en) * 2005-05-04 2010-06-01 Richards Marlowe R Muzzleloader firearm with quick-release breech plug
US8397623B2 (en) 2009-01-14 2013-03-19 Geoffrey A. Herring Rifle and kit for constructing same

Also Published As

Publication number Publication date
NL52759C (en)
US2146743A (en) 1939-02-14
BE431675A (en)
FR847565A (en) 1939-10-12

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