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US3336871A - Traveling ignition charge - Google Patents

Traveling ignition charge Download PDF

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Publication number
US3336871A
US3336871A US489086A US48908665A US3336871A US 3336871 A US3336871 A US 3336871A US 489086 A US489086 A US 489086A US 48908665 A US48908665 A US 48908665A US 3336871 A US3336871 A US 3336871A
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US
United States
Prior art keywords
ignition charge
propellant
charge
molded
secured
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
US489086A
Inventor
Joseph B Quinlan
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US489086A priority Critical patent/US3336871A/en
Priority to GB42083/66A priority patent/GB1162158A/en
Application granted granted Critical
Publication of US3336871A publication Critical patent/US3336871A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/26—Cartridge cases
    • F42B5/36—Cartridge cases modified for housing an integral firing-cap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/18—Caseless ammunition; Cartridges having combustible cases
    • 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

Definitions

  • the present invention relates to a small charge of fast burning propellant made from molding propellant granules and primed with a conventional primer mix which acts as a traveling ignition charge in a round of 30 mm. caseless ammunition.
  • Caseless ammunition has in the past proved to be feasible for several calibers ranging from the experimental 3.2 mm. to caliber .30. It has been demonstrated that an integrated, molded granular propellant could be made to yield gas generation rates similar to those obtained with loose granular propellant in a conventional case.
  • An object of the present invention is the provision of a traveling ignition charge in a round of 30 mm. caseless ammunition resulting in higher muzzle velocity.
  • Another object is to provide a traveling ignition charge in a round of 30 mm. caseless ammunition capable of facilitating ignition and break-up of the caseless propellant charge.
  • a molded propellant comprisice ing granules of propellant bonded in a molded mass by a low-nitrogen nitro-cellulose binder has a projectile 12 secured in a forward recess 14.
  • the projectile 12 is provided with a band 16 to provide the projectile 12 with spin upon its travel through the barrel of the weapon, not shown, u-pon firing.
  • An axial cavity 18 is formed within the round and is generally centrally disposed therewithin as shown. This cavity is used to provide axial ignition and to insure a means of controlling charge weight as described in patent application, Ser. No. 343,904, filed Feb. 10, 1964, now Patent No. 3,212,440.
  • the traveling ignition charge indicated generally by the reference numeral 20 is secured in a rearward recess of the molded propellant 10 a short distance ahead of a standard primer plug 22 of the type described in patent application of Quinlan et al., Ser. No. 477,046, filed Aug. 3, 196 5, and includes charge 24 made of a fast burning propellant.
  • the propel lant charge 24 may be solid, cored, or honeycomb to achieve desired results of ignition and breakup.
  • the propellant charge 24 contains a primer pocket 26 which holds a conventional small arms priming mix 28. The amount of mix 28 utilized depends on the size of the solid propellant charge to be broken up.
  • the traveling ignition charge is made of a fast burning propellant granule, molded into an integral charge and pocketed for a priming mix. After the traveling ignition charge is primed it is inserted into the perforation of the caseless round ahead of a standard primer plug allowing enough free volume therebetween to allow the traveling ignition charge to fire at an optimum velocity. The traveling ignition charge is ignited by a standard primer blast and in turn travels the length of the perforation igniting the round.
  • the traveling ignition charge serves as an auxiliary ignition and breakup element for solid propellant caseless cavity, a projectile secured in said forward recess, a
  • primer plug secured in said rearward recess, and an ignition charge movable upon ignition and temporarily secured in said axial cavity a short distance from said primer plug.
  • said molded solid propellant ignition charge contains a primer pocket.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Air Bags (AREA)

Description

Aug. 22, 1967 J. B. QUINLAN TRAVELING IGNITION CHARGE Filed Sept. 21, 1965 jwvW (m JOSEPH B. QUINLAN United States Patent 3,336,871 TRAVELING IGNITION CHARGE Joseph B. Quinlan, Philadelphia, Pa., assignor to the United States of America as represented by the Secretary of the Army Filed Sept. 21, 1965, Ser. No. 489,086 3 Claims. (Cl. 102-38) ABSTRACT OF TIDE DISCLOSURE An integrated, caseless molded round having an axial cavity therethrough. A projectile secured at the front end of said cavity and a primer plug secured at the rear end thereof. A movable molded charge is held in said cavity a short distance from said primer plug to act as a traveling ignition charge thereby causing complete burnout of said round and higher muzzle velocity.
The invention described herein may be manufactured and used by or for the Government for governmental purposes Without the payment to me of any royalty thereon.
The present invention relates to a small charge of fast burning propellant made from molding propellant granules and primed with a conventional primer mix which acts as a traveling ignition charge in a round of 30 mm. caseless ammunition.
Caseless ammunition has in the past proved to be feasible for several calibers ranging from the experimental 3.2 mm. to caliber .30. It has been demonstrated that an integrated, molded granular propellant could be made to yield gas generation rates similar to those obtained with loose granular propellant in a conventional case.
It is believed that a 30 mm. caseless round made to meet the required balistic requirement of 3450 feet per second muzzle velocity could be used with vehicle rapid fire weapon systems.
The main advantages of a 30 mm. caseless round are:
(1) Reduction in cartridge weight and volume,
(2) Elimination of spent cases in tanks and aircraft thus eliminating a storage problem or the need for ejection from the vehicle,
(3) Elimination of the toxic fume problem for tank ammunition,
(4) Elimination of the need for expensive tools, processing, and critical brass incidental to the use of metal cartridge cases, and
(5) A potential reduction in the unit cost of ammunition and in logistic storage and supply costs due to the reduction in weight and volume.
To achieve a 30 mm. caseless round with the muzzle velocity of 3450 feet per second the propellant must be made to break up and burn completely. There can be no unburned propellant left after firing.
An object of the present invention is the provision of a traveling ignition charge in a round of 30 mm. caseless ammunition resulting in higher muzzle velocity.
Another object is to provide a traveling ignition charge in a round of 30 mm. caseless ammunition capable of facilitating ignition and break-up of the caseless propellant charge.
The exact nature of this invention as well as other objects and advantages thereof will be readily apparent upon consideration of the following specification relating to the annexed drawing.
Referring now to the single figure of the drawing wherein a longitudinal section of a preferred embodiment of the invention is shown, a molded propellant comprisice ing granules of propellant bonded in a molded mass by a low-nitrogen nitro-cellulose binder has a projectile 12 secured in a forward recess 14. The projectile 12 is provided with a band 16 to provide the projectile 12 with spin upon its travel through the barrel of the weapon, not shown, u-pon firing.
An axial cavity 18 is formed within the round and is generally centrally disposed therewithin as shown. This cavity is used to provide axial ignition and to insure a means of controlling charge weight as described in patent application, Ser. No. 343,904, filed Feb. 10, 1964, now Patent No. 3,212,440.
The traveling ignition charge, indicated generally by the reference numeral 20 is secured in a rearward recess of the molded propellant 10 a short distance ahead of a standard primer plug 22 of the type described in patent application of Quinlan et al., Ser. No. 477,046, filed Aug. 3, 196 5, and includes charge 24 made of a fast burning propellant. The propel lant charge 24 may be solid, cored, or honeycomb to achieve desired results of ignition and breakup. The propellant charge 24 contains a primer pocket 26 which holds a conventional small arms priming mix 28. The amount of mix 28 utilized depends on the size of the solid propellant charge to be broken up.
The traveling ignition charge is made of a fast burning propellant granule, molded into an integral charge and pocketed for a priming mix. After the traveling ignition charge is primed it is inserted into the perforation of the caseless round ahead of a standard primer plug allowing enough free volume therebetween to allow the traveling ignition charge to fire at an optimum velocity. The traveling ignition charge is ignited by a standard primer blast and in turn travels the length of the perforation igniting the round.
The traveling ignition charge serves as an auxiliary ignition and breakup element for solid propellant caseless cavity, a projectile secured in said forward recess, a
primer plug secured in said rearward recess, and an ignition charge movable upon ignition and temporarily secured in said axial cavity a short distance from said primer plug.
2. A device of the type described in claim 1 wherein said ignition charge comprises a molded solid propellant. 3. A device of the type described in claim 2 wherein said molded solid propellant ignition charge contains a primer pocket.
References Cited UNITED STATES PATENTS 1,856,022 4/1932 Blacker 10238 X 3,008,258 11/1961 Johnson 10238 X 3,114,290 12/1963 Harvey et al. l0238 X FOREIGN PATENTS 455,382 1/ 1928 Germany.
BENJAMIN A. BORCHELT, Primary Examiner. ROBERT F. STAHL, Examiner.
a molded solid propellant Y

Claims (1)

1. AN INTEGRATED, CASELESS MOLDED ROUND COMPRISING GRANULES OF PROPELLANT BONDED IN A MOLDED MASS BY A LOW NITROGEN NITRO-CELLULOSE BINDER, SAID MOLDED MASS HAVING A FORWARD RECESS AND A REARWARD CONNECTED BY AN AXIAL CAVITY, A PROJECTILE SECURED IN SAID FORWARD RECESS, A PRIMER PLUG SECURED IN SAID REARWARD RECESS, AND AN IGNITION CHARGE MOVABLE UPON IGNITION AND TEMPORARILY SECURED IN SAID AXIAL CAVITY A SHORT DISTANCE FROM SAID PRIMER PLUG.
US489086A 1965-09-21 1965-09-21 Traveling ignition charge Expired - Lifetime US3336871A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US489086A US3336871A (en) 1965-09-21 1965-09-21 Traveling ignition charge
GB42083/66A GB1162158A (en) 1965-09-21 1966-09-21 Improvements in Caseless Ammunition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US489086A US3336871A (en) 1965-09-21 1965-09-21 Traveling ignition charge

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US3336871A true US3336871A (en) 1967-08-22

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GB (1) GB1162158A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485170A (en) * 1967-11-29 1969-12-23 Remington Arms Co Inc Expendable case ammunition
US3645207A (en) * 1969-05-06 1972-02-29 Trw Inc Combustible moistureproof percussion primer
US3728966A (en) * 1968-05-07 1973-04-24 Olin Mathieson Cartridge
US3762328A (en) * 1969-01-15 1973-10-02 Maremont Corp Caseless ammunition and gun therefor
US3799055A (en) * 1970-01-21 1974-03-26 C Irish Electrical initiator
US3804021A (en) * 1972-01-19 1974-04-16 Girr R Mc Device for firing multiple cartridges in a time sequence
US4213392A (en) * 1972-01-28 1980-07-22 Hubert Usel Electrically ignitable cartridge-less bullet
US20090266263A1 (en) * 2008-04-25 2009-10-29 Alliant Techsystems Inc. Advanced muzzle loader ammunition
US8763535B2 (en) 2011-01-14 2014-07-01 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US8807008B2 (en) 2011-01-14 2014-08-19 Pcp Tactical, Llc Polymer-based machine gun belt links and cartridge casings and manufacturing method
USD715888S1 (en) 2012-01-13 2014-10-21 Pcp Tactical, Llc Radiused insert
US8869702B2 (en) 2011-01-14 2014-10-28 Pcp Tactical, Llc Variable inside shoulder polymer cartridge
US8875633B2 (en) * 2011-01-14 2014-11-04 Pcp Tactical, Llc Adhesive lip for a high strength polymer-based cartridge casing and manufacturing method
US8881634B1 (en) 2008-06-13 2014-11-11 Alliant Techsystems Inc. Muzzle loader powder increment using celluloid combustible container
US9377277B1 (en) 2008-04-25 2016-06-28 Vista Outdoor Operations Llc Advanced muzzle loader ammunition
USD849874S1 (en) 2018-01-21 2019-05-28 Vista Outdoor Operations Llc Muzzleloader propellant cartridge
US10794671B2 (en) 2011-01-14 2020-10-06 Pcp Tactical, Llc Polymer-based cartridge casing for subsonic ammunition
US11448491B2 (en) 2018-07-30 2022-09-20 Pcp Tactical, Llc Polymer cartridge with enhanced snapfit metal insert and thickness ratios
US11988491B1 (en) 2021-07-29 2024-05-21 Revolutionary Rounds L.L.C. Projectile and caseless cartridge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3309288A1 (en) * 1983-03-16 1984-09-20 Diehl GmbH & Co, 8500 Nürnberg SLEEVELESS AMMUNITION FOR MACHINE ARMS
DE3610424C1 (en) * 1986-03-27 1987-09-10 Dynamit Nobel Ag Self-supporting propellant body and compact charge made from it
DE19544560A1 (en) * 1994-12-01 1996-06-05 Dynamit Nobel Ag Cartridge for recoilless barrel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE455382C (en) * 1919-05-27 1928-01-31 Joh Nic Ludwig Bullet firmly connected to the propellant
US1856022A (en) * 1930-06-27 1932-04-26 Blacker Latham Valenti Stewart Machine gun and small arm
US3008258A (en) * 1960-06-15 1961-11-14 David A Johnson Firearm and cartridge therefor
US3114290A (en) * 1962-10-12 1963-12-17 Earle M Harvey Breech sealing means for automatic firearms adapted to fire caseless ammunition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE455382C (en) * 1919-05-27 1928-01-31 Joh Nic Ludwig Bullet firmly connected to the propellant
US1856022A (en) * 1930-06-27 1932-04-26 Blacker Latham Valenti Stewart Machine gun and small arm
US3008258A (en) * 1960-06-15 1961-11-14 David A Johnson Firearm and cartridge therefor
US3114290A (en) * 1962-10-12 1963-12-17 Earle M Harvey Breech sealing means for automatic firearms adapted to fire caseless ammunition

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485170A (en) * 1967-11-29 1969-12-23 Remington Arms Co Inc Expendable case ammunition
US3728966A (en) * 1968-05-07 1973-04-24 Olin Mathieson Cartridge
US3762328A (en) * 1969-01-15 1973-10-02 Maremont Corp Caseless ammunition and gun therefor
US3645207A (en) * 1969-05-06 1972-02-29 Trw Inc Combustible moistureproof percussion primer
US3799055A (en) * 1970-01-21 1974-03-26 C Irish Electrical initiator
US3804021A (en) * 1972-01-19 1974-04-16 Girr R Mc Device for firing multiple cartridges in a time sequence
US4213392A (en) * 1972-01-28 1980-07-22 Hubert Usel Electrically ignitable cartridge-less bullet
US20090266263A1 (en) * 2008-04-25 2009-10-29 Alliant Techsystems Inc. Advanced muzzle loader ammunition
US7726245B2 (en) * 2008-04-25 2010-06-01 Alliant Techsystems Inc. Muzzleloader ammunition
US20100275487A1 (en) * 2008-04-25 2010-11-04 Alliant Techsystems Inc. Advanced muzzle loader ammunition
US9377277B1 (en) 2008-04-25 2016-06-28 Vista Outdoor Operations Llc Advanced muzzle loader ammunition
US8881634B1 (en) 2008-06-13 2014-11-11 Alliant Techsystems Inc. Muzzle loader powder increment using celluloid combustible container
US9989343B2 (en) 2010-07-30 2018-06-05 Pcp Tactical, Llc Base insert for polymer ammunition cartridges
US9599443B2 (en) 2010-07-30 2017-03-21 Pcp Tactical, Llc Base insert for polymer ammunition cartridges
US9003973B1 (en) 2011-01-14 2015-04-14 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US8763535B2 (en) 2011-01-14 2014-07-01 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US8869702B2 (en) 2011-01-14 2014-10-28 Pcp Tactical, Llc Variable inside shoulder polymer cartridge
US9194680B2 (en) 2011-01-14 2015-11-24 Pcp Tactical, Llc Polymer-based machine gun belt links and cartridge casings and manufacturing method
US9261335B2 (en) 2011-01-14 2016-02-16 Pcp Tactical, Llc Frangible portion for a high strength polymer-based cartridge casing and manufacturing method
US9372054B2 (en) 2011-01-14 2016-06-21 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge casing for blank and subsonic ammunition
US11976911B2 (en) 2011-01-14 2024-05-07 Pcp Tactical, Llc Polymer-based cartridge casing for subsonic ammunition
US11353299B2 (en) 2011-01-14 2022-06-07 Pcp Tactical, Llc Polymer-based cartridge casing for subsonic ammunition
US8807008B2 (en) 2011-01-14 2014-08-19 Pcp Tactical, Llc Polymer-based machine gun belt links and cartridge casings and manufacturing method
US8875633B2 (en) * 2011-01-14 2014-11-04 Pcp Tactical, Llc Adhesive lip for a high strength polymer-based cartridge casing and manufacturing method
US9995561B2 (en) 2011-01-14 2018-06-12 Pcp Tactical, Llc Narrowing high strength polymer-based cartridge for blank and subsonic ammunition
US10794671B2 (en) 2011-01-14 2020-10-06 Pcp Tactical, Llc Polymer-based cartridge casing for subsonic ammunition
USD765214S1 (en) 2012-01-13 2016-08-30 Pcp Tactical, Llc Radiused insert
USD715888S1 (en) 2012-01-13 2014-10-21 Pcp Tactical, Llc Radiused insert
USD849874S1 (en) 2018-01-21 2019-05-28 Vista Outdoor Operations Llc Muzzleloader propellant cartridge
US11448491B2 (en) 2018-07-30 2022-09-20 Pcp Tactical, Llc Polymer cartridge with enhanced snapfit metal insert and thickness ratios
US12163770B2 (en) 2018-07-30 2024-12-10 Pcp Tactical, Llc Polymer cartridge with enhanced snapfit metal insert and thickness ratios
US11988491B1 (en) 2021-07-29 2024-05-21 Revolutionary Rounds L.L.C. Projectile and caseless cartridge

Also Published As

Publication number Publication date
GB1162158A (en) 1969-08-20

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