GB1182454A - Improvements in Gun Breech Mechanisms - Google Patents

Improvements in Gun Breech Mechanisms

Info

Publication number
GB1182454A
GB1182454A GB9481/67A GB948167A GB1182454A GB 1182454 A GB1182454 A GB 1182454A GB 9481/67 A GB9481/67 A GB 9481/67A GB 948167 A GB948167 A GB 948167A GB 1182454 A GB1182454 A GB 1182454A
Authority
GB
United Kingdom
Prior art keywords
breech
bolt
bolt head
nib
face
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
GB9481/67A
Inventor
Bruno Civolani
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 GB1182454A publication Critical patent/GB1182454A/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

Abstract

1,182,454. Firearms. B. CIVOLANI. 28 Feb., 1967 [9 March, 1966], No. 9481/67. Heading F3C. A firearm comprises a breech mechanism slidable within a breech frame 7. The breech mechanism consists of a bolt head 1 mounted slidably within a breech bolt 9, spring 10 being interposed therebetween and tending to urge the head 1 away from the bolt 9. The bolt head 1 is locked in its firing position by a nib 3 which engages with one end in recess 15 in the bolt head, the other end of the nib being formed with a foot 5 preferably having four flat faces 16, 17, 18, 19. In the locked firing position the face 16 engages an abutment 6 of the breech frame 7. On firing the firearm, for example, through the hammer 23 striking the firing pin 14, the firearm recoils and, in response to the recoil, the breech bolt 9 is urged forwardly against the spring 10 to delay the unlocking of the bolt head 1, (Fig. 2, not shown). The breech bolt 9 is then urged rearwardly by the compressed spring 10 and by the residual gas from the fired cartridge, a face 22 of the breech bolt 9 engaging the face 18 of the nib foot 5 to slide the face 17 over the abutment 6 and withdraw the forward end of the nib 3 away from the bolt head recess 15, thus unlocking the bolt head 1, (Fig. 3, not shown). The bolt head 1 then recoils away from the breech to eject the spent cartridge.
GB9481/67A 1966-03-09 1967-02-28 Improvements in Gun Breech Mechanisms Expired GB1182454A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT517266 1966-03-09

Publications (1)

Publication Number Publication Date
GB1182454A true GB1182454A (en) 1970-02-25

Family

ID=11118807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9481/67A Expired GB1182454A (en) 1966-03-09 1967-02-28 Improvements in Gun Breech Mechanisms

Country Status (5)

Country Link
US (1) US3447417A (en)
BE (1) BE695019A (en)
ES (1) ES337702A1 (en)
FR (1) FR1513776A (en)
GB (1) GB1182454A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE899262A (en) * 1984-03-28 1984-09-28 Herstal Sa IMPROVEMENTS ON HUNTING WEAPONS.
US7661219B1 (en) * 2007-01-10 2010-02-16 Knights Armament Company Ambidextrous bolt catch for firearms
ITMI20071474A1 (en) * 2007-07-20 2009-01-21 Benelli Armi Spa CLOSING AND RESET UNIT WITH OSCILLATING SHUTTER AND ROTARY CLOSING HEAD, PARTICULARLY FOR WEAPONS WITH INERTIAL OPERATION USING THE KINETIC ENERGY OF RINCULO
ITBS20110093A1 (en) 2011-06-23 2012-12-24 Beretta Armi Spa OPERATING SYSTEM FOR FIRE WEAPON

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US676094A (en) * 1900-04-19 1901-06-11 Robert W Linville Magazine-firearm
US1109910A (en) * 1914-06-13 1914-09-08 James Eastwick Automatic small-arm.
DE707986C (en) * 1938-01-22
US2365389A (en) * 1941-11-04 1944-12-19 J M & M S Browning Company Firearm
BE547716A (en) * 1955-05-13
US2866387A (en) * 1957-01-11 1958-12-30 Rudolph E Stern Breech block mechanism

Also Published As

Publication number Publication date
FR1513776A (en) 1968-02-16
DE1553854B2 (en) 1975-11-13
DE1553854A1 (en) 1971-06-09
BE695019A (en) 1967-08-14
US3447417A (en) 1969-06-03
ES337702A1 (en) 1968-04-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PE Patent expired