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GB631038A - Improvements in automatic firearms - Google Patents

Improvements in automatic firearms

Info

Publication number
GB631038A
GB631038A GB18881/47A GB1888147A GB631038A GB 631038 A GB631038 A GB 631038A GB 18881/47 A GB18881/47 A GB 18881/47A GB 1888147 A GB1888147 A GB 1888147A GB 631038 A GB631038 A GB 631038A
Authority
GB
United Kingdom
Prior art keywords
support
breech block
breech
carrier
block
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
GB18881/47A
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.)
Zbrojovka Brno np
Original Assignee
Zbrojovka Brno np
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 Zbrojovka Brno np filed Critical Zbrojovka Brno np
Publication of GB631038A publication Critical patent/GB631038A/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
    • F41A3/32—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 bolt being rocked about a notional axis transverse 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
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/03—Shot-velocity control
    • 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
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/12—Cartridge chambers; Chamber liners
    • 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
    • F41A3/54—Bolt locks of the unlocked type, i.e. being inertia operated
    • F41A3/56—Bolt locks of the unlocked type, i.e. being inertia operated the bolt being provided with an additional slidable mass

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

631,038. Automatic firearms. ZBROJOVKA BRNO, NARODNI PODNIK, and KYNCL, J. July 15, 1947, No. 18881. Convention date, July 15, 1946. [Class 119] An automatic firearm has, in combination (a) a breech-block mechanism in which the breech block moves back a short distance v before becoming positively locked and in which a breech-block carrier is accelerated, together with the breech block through the distance v by the pressure of gases acting against the base of the cartridge ; and (b) grooves in the walls of the cartridge chamber to enable propellant gases to reach the external surface of the cartridge case of the discharged round. In the construction shown the breech block 3 and its carrier 5 recoil through the distance v together when a shot is fired, the breech block then becoming positively locked by a fixed support 6 while the carrier continues rearwards against the action of the spring 8. Release of the breech block is eventually effected by the engagement of noses 10, 11 on it and the carrier respectively. Firing is effected by the action of a hammer 7 on the firing pin 4 whose rear end projects through a hole in a part of the carrier. The propellant gases reach the external surface of the cartridge case by way of grooves 9 in the cartridge chamber. The clearance v may be regulated by a suitable choice of the breech block or support 6, by axially adjusting the barrel, or by transversely moving the support when this is wedge-shaped. The support may alternatively move through the distance v against the pressure of a spring acting on the support, or the breech block may bear on a narrow flat spring projecting from the locking surface of the support. The Specification as open to inspection under Sect. 91 refers also to the grooving of the cartridge case. This subject-matter does not appear in the Specification as accepted.
GB18881/47A 1946-07-15 1947-07-15 Improvements in automatic firearms Expired GB631038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS261999X 1946-07-15

Publications (1)

Publication Number Publication Date
GB631038A true GB631038A (en) 1949-10-26

Family

ID=5451555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18881/47A Expired GB631038A (en) 1946-07-15 1947-07-15 Improvements in automatic firearms

Country Status (3)

Country Link
BE (1) BE474385A (en)
CH (1) CH261999A (en)
GB (1) GB631038A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139799A (en) * 1962-04-04 1964-07-07 Mossberg & Sons O F Action for semiautomatic firearms
WO2007137524A3 (en) * 2006-05-25 2008-01-31 Czech Weapons S R O Locking mechanism of a hand firearm
EP2867606A4 (en) * 2012-06-27 2016-07-06 Mark C Larue Firearm barrel having cartridge chamber preparation facilitating efficient cartridge case extraction and protection against premature bolt failure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073911B (en) * 1960-01-21 Schweizerische Industrie-Gesellschaft, Neuhausen, Rheinfall (Schweiz) Automatic firearm

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3139799A (en) * 1962-04-04 1964-07-07 Mossberg & Sons O F Action for semiautomatic firearms
WO2007137524A3 (en) * 2006-05-25 2008-01-31 Czech Weapons S R O Locking mechanism of a hand firearm
EP2867606A4 (en) * 2012-06-27 2016-07-06 Mark C Larue Firearm barrel having cartridge chamber preparation facilitating efficient cartridge case extraction and protection against premature bolt failure

Also Published As

Publication number Publication date
CH261999A (en) 1949-06-15
BE474385A (en)

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