GB574352A - Improvements in or relating to automatic guns - Google Patents

Improvements in or relating to automatic guns

Info

Publication number
GB574352A
GB574352A GB279743A GB279743A GB574352A GB 574352 A GB574352 A GB 574352A GB 279743 A GB279743 A GB 279743A GB 279743 A GB279743 A GB 279743A GB 574352 A GB574352 A GB 574352A
Authority
GB
United Kingdom
Prior art keywords
breech
block
barrel
gun
plates
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
GB279743A
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 GB279743A priority Critical patent/GB574352A/en
Publication of GB574352A publication Critical patent/GB574352A/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
    • F41A3/36—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing
    • F41A3/38—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having rocking locking elements, e.g. pivoting levers or vanes
    • F41A3/40—Semi-rigid bolt locks, i.e. having locking elements movably mounted on the bolt or on the barrel or breech housing having rocking locking elements, e.g. pivoting levers or vanes mounted on the 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
    • F41A5/08—Mechanisms or systems operated by propellant charge energy for automatically opening the lock recoil-operated having an accelerator lever acting on the breech-block or bolt during the opening movement

Landscapes

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

Abstract

574,352. Automatic guns. MOTLEY, L. Feb. 19, 1943, No. 2797. [Class 92 (ii)] The breech block 2 of an automatic gun is locked to the barrel 1 by a biassed member 4 which moves under its bias into the locking position, when the breech block is in its forward position, independently of any movement, of the barrel relatively to the fixed part of the gun mounting, unlocking being effected by a device which is slidably mounted on the breech block and which is driven rearwardly to effect the unlocking when the barrel recoils on a shot being fired. In the construction shown, the breech-block 2 is fitted with a pivoted member 4 adapted to engage with an insert 6 in a recess 5 in the barrel extension 1a to lock the breech-block to the barrel extension when the parts are in the firing position. Plates 10 are arranged one on either side of the breech-block, being urged forward in relation thereto by spring 17 and having a pin and slot connection 20, 21, therewith. Each plate is fitted with a rod 11 adapted to be engaged by one arm 7 of a bell crank lever pivoted at 8 to a ring 12 secured to the barrel 1. The other arm of the lever engages with a pin 15 connected, as shown, to a non-recoiling part of the gun. When a shot is fired, the barrel and breech-block recoil together and the arms 7 impart an additional movement to the plates 10, thus moving the latter rearwardly with respect to the breech-block and thereby causing inclined surface 10a on the plates to engage and lift the member 4. Screw-threaded devices 13, 16 permit of fine adjustment of the pin 15 and also of the effective part of the arm 7 as shown. In a modification, Fig. 4 (not shown) each bell-crank lever is replaced by a cog wheel which engages an adjustably mounted rack fixed to a non-recoiling part of the gun and with a second rack on each rod 11. In this modification, the rods 11 are not attached to the side plates but abut against them. The Provisional Specification describes also a construction in which the bell-crank levers are formed with toothed quadrants which engage with a fixed rack on the gun.
GB279743A 1943-02-19 1943-02-19 Improvements in or relating to automatic guns Expired GB574352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB279743A GB574352A (en) 1943-02-19 1943-02-19 Improvements in or relating to automatic guns

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB279743A GB574352A (en) 1943-02-19 1943-02-19 Improvements in or relating to automatic guns

Publications (1)

Publication Number Publication Date
GB574352A true GB574352A (en) 1946-01-02

Family

ID=9746101

Family Applications (1)

Application Number Title Priority Date Filing Date
GB279743A Expired GB574352A (en) 1943-02-19 1943-02-19 Improvements in or relating to automatic guns

Country Status (1)

Country Link
GB (1) GB574352A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756640A (en) * 1950-03-30 1956-07-31 Brev Aero Mecaniques S A Soc Breech block locking means
US2831403A (en) * 1950-03-30 1958-04-22 Brev Aero Mecaniques S A Soc Sliding breechblock locking mechanism for self-loading firearms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756640A (en) * 1950-03-30 1956-07-31 Brev Aero Mecaniques S A Soc Breech block locking means
US2831403A (en) * 1950-03-30 1958-04-22 Brev Aero Mecaniques S A Soc Sliding breechblock locking mechanism for self-loading firearms

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