GB1247871A - Open chamber breech mechanism for firing caseless ammunition - Google Patents

Open chamber breech mechanism for firing caseless ammunition

Info

Publication number
GB1247871A
GB1247871A GB41903/68A GB4190368A GB1247871A GB 1247871 A GB1247871 A GB 1247871A GB 41903/68 A GB41903/68 A GB 41903/68A GB 4190368 A GB4190368 A GB 4190368A GB 1247871 A GB1247871 A GB 1247871A
Authority
GB
United Kingdom
Prior art keywords
firing
carrier member
obturator
chamber
ammunition
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
GB41903/68A
Inventor
David Dardick
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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Publication of GB1247871A publication Critical patent/GB1247871A/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
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/74—Obturating or packing devices for gas leak prevention in breech mechanisms
    • 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
    • F41A3/64—Mounting of breech-blocks; Accessories for breech-blocks or breech-block mountings
    • F41A3/74—Obturating or packing devices for gas leak prevention in breech mechanisms
    • F41A3/76—Obturating or packing devices for gas leak prevention in breech mechanisms specially adapted for sealing the gap between the forward end of the cartridge chamber and the rearward end of the barrel, e.g. sealing devices for revolvers or revolver-type 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
    • F41A9/00—Feeding or loading of ammunition; Magazines; Guiding means for the extracting of cartridges
    • F41A9/01—Feeding of unbelted ammunition
    • F41A9/24—Feeding of unbelted ammunition using a movable magazine or clip as feeding element
    • F41A9/26—Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine
    • F41A9/27—Feeding of unbelted ammunition using a movable magazine or clip as feeding element using a revolving drum magazine in revolver-type guns
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S102/00—Ammunition and explosives
    • Y10S102/70—Combustilbe cartridge

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,247,871. Open chamber breech mechanism; caseless cartridges. TRW Inc. 3 Sept., 1968 [1 Sept., 1967], No. 41903/68. Headings F3A and F3C. An open chamber breech mechanism for firing caseless ammunition 12 comprises a carrier member 18 having a firing chamber opening laterally through the surface thereof and being mounted for rotation in a frame member 14 which has an ammunition infeed opening, the carrier member 18 rotating between a cartridge infeed position and a firing position. Obturator means 42 are provided for sealing those interfaces between the members 14, 18 which, in use, are subjected to propellent gas pressure during firing of a round. In the construction shown the obturator means 42 comprise an upper obturator attached to the frame member 14 and sealing around the margins of the firing chamber through sealing means 80, 82 (78, Fig. 2, not shown), the sealing means being urged against the carrier member by the explosion gases. The obturator means 42 further comprise an annular flange 94 on the forward face of the carrier member 18. The firing means 40 is sealed by a flange 102 thereof abutting the rear wall of a chamber 104 containing the firing means. The carrier member 18 is provided with a pair of bearing surfaces 50 which terminate in stop surfaces (52, Fig. 3, not shown) so that the carrier member is mounted for limited oscillation. The rotational axis of the carrier member is eccentric so that the member tends to move away from the upper obturator on movement from the firing position to the infeed position. In a further embodiment (Fig. 4, not shown) the breech mechanism is of the recoilless type. When cylindrical rounds of ammunition are used a pivoted plate is provided in the upper obturator which plate co-operates with the carrier member to form a chamber for the projectile (Figs. 5, 6, not shown). The obturator means may be housed in grooves in the carrier member flexible or pivoted walls separating the means from the pressurized gas so that, in use, the means are compressed in the grooves and thereby urged against the frame member (Figs. 7 to 10, not shown). The ammunition shown in Fig. 1 has an equilateral curvilinear triangular shape in transverse cross-section and the projectile 30 is embedded in the charge 110.
GB41903/68A 1967-09-01 1968-09-03 Open chamber breech mechanism for firing caseless ammunition Expired GB1247871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67191067A 1967-09-01 1967-09-01

Publications (1)

Publication Number Publication Date
GB1247871A true GB1247871A (en) 1971-09-29

Family

ID=24696381

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41903/68A Expired GB1247871A (en) 1967-09-01 1968-09-03 Open chamber breech mechanism for firing caseless ammunition

Country Status (9)

Country Link
US (1) US3446113A (en)
BE (1) BE720219A (en)
CH (1) CH496229A (en)
DE (1) DE1728022A1 (en)
ES (1) ES357769A1 (en)
FR (1) FR1603956A (en)
GB (1) GB1247871A (en)
IL (1) IL30603A0 (en)
SE (1) SE353391B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1843120A1 (en) * 2006-04-05 2007-10-10 Rheinmetall Waffe Munition GmbH Automatic cannon

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1291262B (en) * 1965-11-17 1969-03-20 Rheinmetall Gmbh Combustible cartridge base
US3890730A (en) * 1972-03-30 1975-06-24 Andrew J Grandy Ammunition and weapon systems
US3890878A (en) * 1972-03-30 1975-06-24 Andrew J Grandy Ammunition and weapon systems
US4004642A (en) * 1975-12-08 1977-01-25 David Dardick Tround terra-drill processes and apparatus
FR2600762B1 (en) * 1986-06-25 1990-04-27 France Etat Armement HEAD TUBE SEALING SYSTEM
FR2658280B1 (en) * 1990-02-14 1994-06-17 France Etat Armement WEAPON WITH OPEN CHAMBER.
US6550503B1 (en) 2002-07-23 2003-04-22 George Bowman Drive-through delimbing gate
DE102010017876A1 (en) 2010-04-21 2011-10-27 Rheinmetall Waffe Munition Gmbh Belt system and multi-purpose weapon
CN112504007B (en) * 2020-11-27 2022-08-16 河北燕兴机械有限公司 Latch body gas-closing structure for recoilless gun

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US325878A (en) * 1885-09-08 Gas-check for fire-arms
GB191420275A (en) * 1914-09-28 1915-11-28 Harry Percival Harvey Anderson Improvements in and relating to Machine Guns.
US2998755A (en) * 1960-02-01 1961-09-05 Robert J Thierry Traversely swinging gun breech with obturating seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1843120A1 (en) * 2006-04-05 2007-10-10 Rheinmetall Waffe Munition GmbH Automatic cannon

Also Published As

Publication number Publication date
SE353391B (en) 1973-01-29
BE720219A (en) 1969-02-03
CH496229A (en) 1970-09-15
US3446113A (en) 1969-05-27
FR1603956A (en) 1971-06-21
IL30603A0 (en) 1970-03-22
DE1728022A1 (en) 1972-07-27
ES357769A1 (en) 1970-03-16

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