GB543465A - Improvements in automatic firearms - Google Patents

Improvements in automatic firearms

Info

Publication number
GB543465A
GB543465A GB1139240A GB1139240A GB543465A GB 543465 A GB543465 A GB 543465A GB 1139240 A GB1139240 A GB 1139240A GB 1139240 A GB1139240 A GB 1139240A GB 543465 A GB543465 A GB 543465A
Authority
GB
United Kingdom
Prior art keywords
bolt
incline
projection
breech
engaging
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
GB1139240A
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
Priority to GB1139240A priority Critical patent/GB543465A/en
Publication of GB543465A publication Critical patent/GB543465A/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
    • 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

Landscapes

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

Abstract

543,465. Automatic guns. JOHNSON, jun., M. M. July 8, 1940, No. 11392. [Class 119] Relates to short-recoil rotarybolt breech actions of the kind described in Specifications 486,907 and 511,365, in which the breech block 5 carries a doublyinclined roller member 24, the unlocking incline 23 engaging a fixed incline 26 on the casing, and the locking incline 22 being engaged by an incline 30 on a roller member 31 upstanding from a spring pressed member 6 which forces the bolt to closed position and locks it to the barrel. According to the present invention, the surfaces 23, 26 are separated in the locked position of the bolt by a gap so that unlocking rotation of the bolt does not occur until the bolt has acquired momentum and impacts the surface 26. The pivoted hammer has a projection 34 engaging a control member 33 to prevent firing until the breech is closed and locked when a sear 8 is released by a projection 37 on the member 6. Rebound of the bolt in the longitudinal direction is prevented by the engagement of the projection 34 on the hammer behind the member 33, and rotary rebound of the bolt is prevented by the engagement of a fin 35 on the bolt behind a spring detent 50 on the gun casing.
GB1139240A 1940-07-08 1940-07-08 Improvements in automatic firearms Expired GB543465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1139240A GB543465A (en) 1940-07-08 1940-07-08 Improvements in automatic firearms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1139240A GB543465A (en) 1940-07-08 1940-07-08 Improvements in automatic firearms

Publications (1)

Publication Number Publication Date
GB543465A true GB543465A (en) 1942-02-26

Family

ID=9985383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1139240A Expired GB543465A (en) 1940-07-08 1940-07-08 Improvements in automatic firearms

Country Status (1)

Country Link
GB (1) GB543465A (en)

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