US3403596A - Obturator arrangement for gun barrels - Google Patents

Obturator arrangement for gun barrels Download PDF

Info

Publication number
US3403596A
US3403596A US561590A US56159066A US3403596A US 3403596 A US3403596 A US 3403596A US 561590 A US561590 A US 561590A US 56159066 A US56159066 A US 56159066A US 3403596 A US3403596 A US 3403596A
Authority
US
United States
Prior art keywords
obturator
base ring
annular
barrel
chamber
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 - Lifetime
Application number
US561590A
Other languages
English (en)
Inventor
Bartels Erich
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.)
Rheinmetall Industrie AG
Original Assignee
Rheinmetall GmbH
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 Rheinmetall GmbH filed Critical Rheinmetall GmbH
Application granted granted Critical
Publication of US3403596A publication Critical patent/US3403596A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • the invention relates to obturators for gun barrels and more particularly to annular obturators held in base rings mounted in gun barrels.
  • Annular obturators have hitherto proved to be very eliective and also simple to insert in the base of barrels and simple to exchange. This change of obturator rings must be carried out from time to time since they are subject to a certain amount of wear due to the hot combustion gases. In modern better performance guns it has been found that, due to the higher gas pressures and temperatures present, these wear phenomena occur to an increased extent and, furthermore, that burning out and damage occur at the base of the barrel.
  • the object of the present invention is substantially to obviate these drawbacks and lengthen the life of these parts which are subjected to wear to an increased extent.
  • This problem is solved by providing a base ring inserted in the base of the gun barrel to receive and hold the annular obturator, the said base ring having a bush-shaped extension of steadily decreasing wall thickness extending into the charge chamber and bearing against the wall thereof.
  • the base ring may also be made of a material different from that of the gun barrel.
  • the base ring therefore advantageously consists of a heat-resistant steel.
  • the bush-shaped extension of the base ring likewise forms a gas check or obturator, in that that end of the extension which is of reduced wall thickness is pressed against the tubular wall of the chamber with a sealing action under the pressure of the powder gases.
  • the base ring has an annular recess for the co-axial side of the obturator ring, this being arranged in such manner that an annular shoulder formed on the base ring projects into the free angular cross-section of the annular obtura tor.
  • the sealing action of the annular obturator has been thereby increased and its life extended.
  • the base ring according to the invention at the same time constitutes the prerequisite for another advantageous development of the invention, whereby the charge is secured against slipping out when firing is carried out with a rather large elevation of the barrel.
  • This thickened portion may also be produced in a simple and advantageous manner in that, during the machining of the base ring on the lathe, the internal diameter of the base ring or the annular shoulder is arranged to be so offset in the crosssectional plane of the barrel that it projects into the crosssection of the opening of the chamber in the lower zone of this plane.
  • a base ring 7 inserted in the base of the barrel is provided for receiving and holding the annular obturator 6 effecting sealing between the wedge-type breechblock 2 and the chamber 5, the annular obturator, which has an L-shaped crosssection comprising the sides 11 and 12, being inserted in a recess in the base ring, so that the vertical side 12 of the annular obturator bears against the wedge-type breechblock 2.
  • the annular obturator like the base ring, is made of a steel which is very resistant to heat.
  • the base ring has a bush-shaped extension 9 projecting into the chamber 5 of the barrel.
  • the wall of the bushshaped extension tapers steadily towards the front, so that it expands elastically through the pressure of the powder gases and is pressed against the wall of the barrel with a sealing action.
  • the base ring has an annular recess 10 for the co-axial side 11 of the annular obturator. In this way, an annular shoulder 13 projecting into the free angular cross-section of the annular obturator is formed between the inner diameter of the base ring, which is some millimetres smaller than the inner diameter of the annular obturator, and the recess 10.
  • the inner diameter of the annular shoulder 13 is so oltset upwardly with respect to the axis x of the bore in the cross-sectional plane of the barrel that in the lower zone of this plane it projects ap proximately in sickle shape by the amount a into the cross-section of the opening of the chamber. In this way, when firing is carried out with a large elevation of the barrel, the charge is secured against slipping out.
  • An obturator arrangement for the charge chamber of a gun barrel comprising in combination a gun barrel including a charge chamber, an annular obturator of substantially L shaped cross-section, and a base ring located adjacent one end of said charge chamber and receiving and holding said obturator in position adjacent said charge chamber, the base ring having a thickened portion lying in the lower zone of the vertical longitudinal central plane of the gun barrel and projecting into the lower zone of the charge chamber.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Clamps And Clips (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Threshing Machine Elements (AREA)
  • Nozzles (AREA)
US561590A 1965-07-21 1966-06-29 Obturator arrangement for gun barrels Expired - Lifetime US3403596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER0041140 1965-07-21

Publications (1)

Publication Number Publication Date
US3403596A true US3403596A (en) 1968-10-01

Family

ID=7406267

Family Applications (1)

Application Number Title Priority Date Filing Date
US561590A Expired - Lifetime US3403596A (en) 1965-07-21 1966-06-29 Obturator arrangement for gun barrels

Country Status (8)

Country Link
US (1) US3403596A (de)
BE (1) BE684295A (de)
CH (1) CH439017A (de)
DE (1) DE1287973B (de)
DK (1) DK122688B (de)
ES (1) ES329815A1 (de)
GB (1) GB1094825A (de)
NL (1) NL6608190A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022104A (en) * 1974-07-24 1977-05-10 Diehl Breechblock sealing for large-caliber barreled weapons
US4709616A (en) * 1984-02-10 1987-12-01 Rheinmetall Gmbh Obturator ring for a cannon
US5305679A (en) * 1991-04-04 1994-04-26 Giat Industries Cylinder mortar
US20040007873A1 (en) * 2002-03-28 2004-01-15 Rheinmetall W & M Gmbh Pipe mortar
US20070028756A1 (en) * 2005-05-03 2007-02-08 Diehl Bgt Defence Gmbh & Co. Kg Seal, in particular for caseless ammunition

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3922334C2 (de) * 1989-07-07 1994-04-21 Rheinmetall Gmbh Axial einstellbarer Waffenrohr-Bodenring
DE4006215A1 (de) * 1990-02-28 1991-09-05 Rheinmetall Gmbh Liderungsringanordnung
GB9121343D0 (en) * 1991-10-09 1992-11-18 Royal Ordance Plc Mortar system
DE4239949C2 (de) * 1992-11-27 2001-12-13 Rheinmetall W & M Gmbh Ringliderung für eine großkalibrige Waffe mit Keilverschluß

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US212197A (en) * 1879-02-11 Improvement in gas-checks for breech-loading ordnance
US2998755A (en) * 1960-02-01 1961-09-05 Robert J Thierry Traversely swinging gun breech with obturating seal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US212197A (en) * 1879-02-11 Improvement in gas-checks for breech-loading ordnance
US2998755A (en) * 1960-02-01 1961-09-05 Robert J Thierry Traversely swinging gun breech with obturating seal

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022104A (en) * 1974-07-24 1977-05-10 Diehl Breechblock sealing for large-caliber barreled weapons
US4709616A (en) * 1984-02-10 1987-12-01 Rheinmetall Gmbh Obturator ring for a cannon
US5305679A (en) * 1991-04-04 1994-04-26 Giat Industries Cylinder mortar
US20040007873A1 (en) * 2002-03-28 2004-01-15 Rheinmetall W & M Gmbh Pipe mortar
US7171886B2 (en) * 2002-03-28 2007-02-06 Rheinmetall W & M Gmbh Pipe mortar
US20070028756A1 (en) * 2005-05-03 2007-02-08 Diehl Bgt Defence Gmbh & Co. Kg Seal, in particular for caseless ammunition

Also Published As

Publication number Publication date
DK122688B (da) 1972-03-27
BE684295A (de) 1967-01-03
GB1094825A (en) 1967-12-13
CH439017A (de) 1967-06-30
ES329815A1 (es) 1967-09-01
NL6608190A (de) 1967-01-23
DE1287973B (de) 1969-01-23

Similar Documents

Publication Publication Date Title
US3027672A (en) Firearm with aluminum alloy receiver
US3403596A (en) Obturator arrangement for gun barrels
GB1152625A (en) Improvements in Armour Piercing Shells
WO2019216931A3 (en) Cased telescoped ammunition firearm with translating chamber
GB702448A (en) Improvements in firearms
GB1303797A (de)
US2094305A (en) Portable firearm for firing bombs
SE7709967L (sv) Reffelstabiliserad rorprojektil
GB613613A (en) Improvements in or relating to projectiles
US3166983A (en) Differential gas system for gasoperated firearms
US3858342A (en) High powered rifle breech
ES266914A1 (es) Mejoras introducidas en la fabricaciën de proyectiles
GB854516A (en) Improvements in recoilless guns
US2456290A (en) Gas-operated automatic rifle
GB585794A (en) Improvements in or relating to gun fired projectiles
RU192404U1 (ru) Артиллерийский снаряд
US2403007A (en) Recoil brake
US2337647A (en) Gun
NO800640L (no) Fremgangsmaate ved fremstilling av prosjektiler.
GB1170956A (en) Improvements in or relating to Automatic Weapons for Firing Practice Ammunition.
US834341A (en) Device for adapting service rifles to reduced ranges.
GB1298691A (en) Improvements to fire-arms
US3359856A (en) Gun barrel with variable capacity chamber
US1374854A (en) Grenade-thrower
US2108817A (en) Machine gun