US2820412A - Projectile for firearms - Google Patents

Projectile for firearms Download PDF

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Publication number
US2820412A
US2820412A US5552448A US2820412A US 2820412 A US2820412 A US 2820412A US 5552448 A US5552448 A US 5552448A US 2820412 A US2820412 A US 2820412A
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Prior art keywords
projectile
carrier
bore
barrel
projectiles
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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
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Inventor
Jr Reinier Beeuwkes
John P Mcdonough
Edward N Hegge
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Jr Reinier Beeuwkes
John P Mcdonough
Edward N Hegge
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02Driving bands; Rotating bands
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42AMMUNITION; BLASTING
    • F42BEXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00Shotgun ammunition
    • F42B7/02Cartridges, i.e. cases with propellant charge and missile
    • F42B7/10Ball or slug shotgun cartridges

Description

Jan. 21, 1958 R. BEEUWKES, JR, ETAL 2,820,412

PROJECTILE FOR FIREARMS Filed Oct. 20, 1948 Fig. EL

' I Firj' c1; fi -4 Rainier EEEuwKasJJ I. dph'n P. MED Erna-ugh Edwurcl N- Heqqe United States Patent'fi PROJECTILE FOR Reinier Beeuwkes, Jr., Newton, John P. McDonough, Boston, and Edward N. Hegge, Westwood, Mass.

Application October 20, 1948, Serial No. 55,524

4 Claims. (Cl. 102-93) (Granted under Title 35, U. S. Code (1952), sec. 266) The invention described herein may be manufactured and used by and for the Government for governmental purposes without the payment to us of any royalty thereon.

This invention relates to an improved projectile for firearms and particularly to an improved gas seal and carrier for projectiles.

It is well known in the gun art that a projectile passiug through the bore of a firearm generates considerable heat due to the friction between the jacket or rotating band of the projectile and the barrel surface. In addition, certain types of bullets, particularly boat tail bullets or spherical projectiles do not efiectively seal the bore as the projectile passes therethrough, hence there is undue escapage of gas by the bullet. Not only does this cause erratic flight of the projectile but there is also considerable loss of velocity of the projectile due to loss of power resulting in inaccuracy and rapid erosion of the bore. Still another drawback with prior art projectiles fired without a positive gas seal is the fact that the speed of the bullet can not be materially increased without damage to the firearm itself because of the limits to which the chamber pressure can be increased.

Accordingly it is an object of this invention to provide a carrier for a projectile which effectively seals the bore of a firearm.

Another object of this invention is to provide a carrier for a projectile which not only elfectively seals the bore of the firearm but permits any form of projectile or plurality of projectiles to be fired from the firearm with greatly improved accuracy.

Still another object of this invention is to provide a carrier for a projectile which is self-lubricating thereby substantially eliminating the friction between the projectile and the bore of the firearm.

Still another object of this invention is to provide an improved carrier means for projectiles whereby the fouling in the bore of a firearm barrel is substantially eliminated.

The specific nature of the invention as well as other objects and advantages thereof will clearly appear from a description of a preferred embodiment as shown in the accompanying drawings in which:

Fig. 1 is a longitudinal sectional view of an ogival projectile substantially enclosed in the plastic carrier.

Fig. 2 is a view similar to Fig. 1 but showing the plastic carrier only partially surrounding the projectile.

Fig. 3 shows a longitudinal sectional view of a plastic carrier completely surrounding the projectile.

Fig. 4 is a view similar to Fig. 3 showing a plurality of projectiles enclosed by the plastic carrier.

This invention essentially consists of enclosing or substantially enclosing a firearm projectile in a plastic jacket, or cylinder. The cylinder is molded to a diameter substantially equal to that of the bore of the firearm barrel. More than one type of plastic material is adaptable for use in such carriers but the preferred type of plastic falls within the class known as methal methacrylate.

2,820,412 Patented Jan. 21, less "ice In Figs. 1 and 2 there is shown a molded plastic carrier enclosed by the carrier as shown in Figs. 3 and 4. In

Fig. 3 a spherical projectile 12 is fully enclosed by carrier 10 while in Fig. 4 a plurality of such projectiles are fully enclosed by the carrier. With the projectile so enclosed in the carrier, such assembly is then loaded in. a firearm cartridge in the usual way.

The carrier 10 may be so constructed that such carrierwill disintegrate upon emergence of the projectile from: the bore of the barrel or such projectile may be of a, non-disintegrating type so that such carrier will stay with. the projectile until such projectile strikes the target. A projectile so encased by carrier 10 can be fired from either a rifled or a smooth bore barrel with great accuracy provided of course the carrier is of a size to properly fit the bore. The plastic material of the carrier is readily deformed and completely seals the bore of the barrel. Thus the full force of the propulsion gases act on the base of the carrier to attain the maximum velocity with a given powder charge of the projectile.

The plastic material utilized for the carrier provides an extremely low coefficient of friction between the carrier and the barrel so that there is little or no wear of the barrel. A further advantage of such material resides in the fact that in view of the low coefficient of friction, greatly increased velocity of the projectile is thus easily obtained. It should be added that projectiles of any size or shape that can be molded within a carrier of a given size can be easily and accurately fired by the use of such carrier. Further, a plurality of projectiles may be readily enclosed in any one carrier, the limitation being of course the size of such projectiles.

In the preferred application of this invention the carrier disintegrates or decomposes in a manner similar to gun powder in the extreme heat of the blast as the projectile leaves the muzzle of the barrel. Thus the projectile is launched in free flight through the air without restraint of rotating bands or riding grooves which greatly facilitates the study of projectiles in flight.

It is also possible with a carrier of this type to fabricate or mold such carrier to fit the bore of a large caliber firearm while utilizing a projectile of a much smaller caliber in the carrier. Thus a larger caliber firearm can be readily adapted for use with a small caliber projectile so that very high velocities may be achieved. With this method small bore shooting can be enjoyed in relatively thickly settled communities if desired.

From the foregoing description it will be apparent to those skilled in the art that there is here provided a carrier for projectiles which not only positively seals the gas in the bore of the barrel but substantially reduces undue wear of the bore surface and minimizes the fouling deposits on the bore surface. Velocities in excess of 5,000 feet per second are easily obtainable when using the carrier of this invention and further such carrier is readily and cheaply molded or fabricated and from material that is available in good supply.

We claim:

1. In a projectile for firing from a rifled barrel, a metallic bullet having a maximum transverse dimension less than the bore of the barrel, and a generally cylindrical carrier of homogeneous acrylic resin of the type that is hard and tough at normal atmospheric temperatures and having a diameter equal to the bore of the barrel, said bullet embedded in said carrier, there being a clearance in all directions radially of said carrier between 3. The invention according to claim 1 wherein the 5 said metallic bullet is completely inclosed Within the said acrylic resin.

4. The invention according to claim 1 wherein the said metallic bullet is embedded at the rear end thereof in the said acrylic resin.

References Cited in the file of this patent UNITED STATES PATENTS Helm Dec. 19, 1871 Dougan June 1, 1920 Brandt Sept. 11, 1934 FOREIGN PATENTS Germany Oct. 23, 1912 Great Britain Jan. 3, 1924' Germany Nov. 29. 1941

US2820412A 1948-10-20 1948-10-20 Projectile for firearms Expired - Lifetime US2820412A (en)

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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911911A (en) * 1955-10-06 1959-11-10 Hobart S White Antifriction gascheck wads
US2939395A (en) * 1954-07-22 1960-06-07 Aircraft Armaments Inc Sabot for high velocity projectile
US2983224A (en) * 1958-01-30 1961-05-09 Stanley P Prosen Plastics sabot
US3005408A (en) * 1960-02-05 1961-10-24 Stanley P Prosen Plastics sabot
US3033116A (en) * 1958-05-20 1962-05-08 John L Critcher Ammunition
US3040662A (en) * 1959-11-19 1962-06-26 William A Zisman Bullets
US3058420A (en) * 1960-04-26 1962-10-16 Canadian Ind Slug-loaded shotgun cartridge
US3059578A (en) * 1956-08-29 1962-10-23 Edward N Hegge Projectile for multimissile ammunition
US3102478A (en) * 1960-04-18 1963-09-03 Arthur J Brown Jr Lubricating seal for shotgun shells
US3120185A (en) * 1962-05-25 1964-02-04 Henry S Lipinski Separate loading ammunition ramming assist
US3131634A (en) * 1963-07-31 1964-05-05 George H Freed Multiple missile cartridge
US3137195A (en) * 1961-11-20 1964-06-16 American Internat Tool Corp Centering and guiding means for metal studs
US3141412A (en) * 1961-05-18 1964-07-21 Elroy C Roehrdanz Sabots
US3185094A (en) * 1962-06-20 1965-05-25 Rheinmetall Gmbh Cartridge case extension piece for use with projectiles
US3186342A (en) * 1962-09-19 1965-06-01 Jr Albert S Hancock Two-stage bullet
US3209689A (en) * 1956-11-14 1965-10-05 Mclennan Donald Elmore Reduction of gun barrel wear
US3247795A (en) * 1964-04-01 1966-04-26 Abela Michael Frank Spinning projectile for smooth bore guns
US3311061A (en) * 1964-06-25 1967-03-28 Ehoy C Roehrdanz Sabot
US3348486A (en) * 1964-12-12 1967-10-24 Dynamit Nobel Ag Plastic-lead mushrooming bullet
US3400660A (en) * 1965-10-20 1968-09-10 Richard L. Malter Ammunition projectile
US3400661A (en) * 1966-05-13 1968-09-10 John M. Coon Projectile
US3430572A (en) * 1966-11-22 1969-03-04 Avco Corp Disintegrating sabot
US3433157A (en) * 1965-12-31 1969-03-18 Dynamit Nobel Ag Practice projectile
US3656433A (en) * 1969-10-13 1972-04-18 Us Army Method for reducing shot dispersion
US3714896A (en) * 1970-12-31 1973-02-06 Aaa Corp Projectile, cartridge, and method
US3732826A (en) * 1971-04-09 1973-05-15 E Johnson Cartridge
US3910194A (en) * 1971-02-01 1975-10-07 Hercules Inc Projectile rotating band
US3972286A (en) * 1972-03-23 1976-08-03 Canon Jack Y Bullet
US4147055A (en) * 1977-12-15 1979-04-03 The United States Of America As Represented By The Secretary Of The Navy Apparatus for determining projectile position and barrel pressure characteristics
FR2535043A1 (en) * 1982-10-20 1984-04-27 Prevot Jean Louis Loading device adaptable to all hunting and other munitions
EP0301981A1 (en) * 1987-07-27 1989-02-01 Marcel Piegay Auxiliary wad for shotgun or other firearm cartridges
FR2618890A1 (en) * 1987-07-27 1989-02-03 Piegay Marcel Top-up wad for cartridge for hunting gun or other firearms
FR2642829A1 (en) * 1989-02-07 1990-08-10 Piegay Marcel Cartridge for shotgun and other firearms
US5165041A (en) * 1991-12-03 1992-11-17 The United States Of America As Represented By The Secretary Of The Army Frangible sabot
US7987624B1 (en) * 1982-07-14 2011-08-02 Moeller Tilo Flashless electric firearm and ammunition therefor
WO2013140182A1 (en) * 2012-03-22 2013-09-26 Graham Ammunition Limited Ammunition with multiple projectiles
US20140290521A1 (en) * 2013-04-01 2014-10-02 Olin Corporation Shotshell with reduced dispersion of projectiles
US20150153145A1 (en) * 2013-12-02 2015-06-04 Bart David Steadman Bullet Shell Casing For Smooth Bore Hunting Guns

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE252630C (en) *
US122014A (en) * 1871-12-19 Improvement in projectiles
US1341844A (en) * 1917-09-20 1920-06-01 Dougan Kennedy Projectile
GB209009A (en) * 1922-10-06 1924-01-03 Vincenzo Graziani Improvements in bullets for sporting guns
US1973604A (en) * 1932-07-19 1934-09-11 Brandt Edgar William Projectile
DE704406C (en) * 1937-01-20 1941-03-29 Deutsche Waffen & Munitionsfab Sub-caliber projectile

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE252630C (en) *
US122014A (en) * 1871-12-19 Improvement in projectiles
US1341844A (en) * 1917-09-20 1920-06-01 Dougan Kennedy Projectile
GB209009A (en) * 1922-10-06 1924-01-03 Vincenzo Graziani Improvements in bullets for sporting guns
US1973604A (en) * 1932-07-19 1934-09-11 Brandt Edgar William Projectile
DE704406C (en) * 1937-01-20 1941-03-29 Deutsche Waffen & Munitionsfab Sub-caliber projectile

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939395A (en) * 1954-07-22 1960-06-07 Aircraft Armaments Inc Sabot for high velocity projectile
US2911911A (en) * 1955-10-06 1959-11-10 Hobart S White Antifriction gascheck wads
US3059578A (en) * 1956-08-29 1962-10-23 Edward N Hegge Projectile for multimissile ammunition
US3209689A (en) * 1956-11-14 1965-10-05 Mclennan Donald Elmore Reduction of gun barrel wear
US2983224A (en) * 1958-01-30 1961-05-09 Stanley P Prosen Plastics sabot
US3033116A (en) * 1958-05-20 1962-05-08 John L Critcher Ammunition
US3040662A (en) * 1959-11-19 1962-06-26 William A Zisman Bullets
US3005408A (en) * 1960-02-05 1961-10-24 Stanley P Prosen Plastics sabot
US3102478A (en) * 1960-04-18 1963-09-03 Arthur J Brown Jr Lubricating seal for shotgun shells
US3058420A (en) * 1960-04-26 1962-10-16 Canadian Ind Slug-loaded shotgun cartridge
US3141412A (en) * 1961-05-18 1964-07-21 Elroy C Roehrdanz Sabots
US3137195A (en) * 1961-11-20 1964-06-16 American Internat Tool Corp Centering and guiding means for metal studs
US3120185A (en) * 1962-05-25 1964-02-04 Henry S Lipinski Separate loading ammunition ramming assist
US3185094A (en) * 1962-06-20 1965-05-25 Rheinmetall Gmbh Cartridge case extension piece for use with projectiles
US3186342A (en) * 1962-09-19 1965-06-01 Jr Albert S Hancock Two-stage bullet
US3131634A (en) * 1963-07-31 1964-05-05 George H Freed Multiple missile cartridge
US3247795A (en) * 1964-04-01 1966-04-26 Abela Michael Frank Spinning projectile for smooth bore guns
US3311061A (en) * 1964-06-25 1967-03-28 Ehoy C Roehrdanz Sabot
US3348486A (en) * 1964-12-12 1967-10-24 Dynamit Nobel Ag Plastic-lead mushrooming bullet
US3400660A (en) * 1965-10-20 1968-09-10 Richard L. Malter Ammunition projectile
US3433157A (en) * 1965-12-31 1969-03-18 Dynamit Nobel Ag Practice projectile
US3400661A (en) * 1966-05-13 1968-09-10 John M. Coon Projectile
US3430572A (en) * 1966-11-22 1969-03-04 Avco Corp Disintegrating sabot
US3656433A (en) * 1969-10-13 1972-04-18 Us Army Method for reducing shot dispersion
US3714896A (en) * 1970-12-31 1973-02-06 Aaa Corp Projectile, cartridge, and method
US3910194A (en) * 1971-02-01 1975-10-07 Hercules Inc Projectile rotating band
US3732826A (en) * 1971-04-09 1973-05-15 E Johnson Cartridge
US3972286A (en) * 1972-03-23 1976-08-03 Canon Jack Y Bullet
US4147055A (en) * 1977-12-15 1979-04-03 The United States Of America As Represented By The Secretary Of The Navy Apparatus for determining projectile position and barrel pressure characteristics
US7987624B1 (en) * 1982-07-14 2011-08-02 Moeller Tilo Flashless electric firearm and ammunition therefor
FR2535043A1 (en) * 1982-10-20 1984-04-27 Prevot Jean Louis Loading device adaptable to all hunting and other munitions
EP0301981A1 (en) * 1987-07-27 1989-02-01 Marcel Piegay Auxiliary wad for shotgun or other firearm cartridges
FR2618890A1 (en) * 1987-07-27 1989-02-03 Piegay Marcel Top-up wad for cartridge for hunting gun or other firearms
EP0382657A1 (en) * 1989-02-07 1990-08-16 Marcel Piegay Cartridge for a rifle and other firearms
FR2642829A1 (en) * 1989-02-07 1990-08-10 Piegay Marcel Cartridge for shotgun and other firearms
US5165041A (en) * 1991-12-03 1992-11-17 The United States Of America As Represented By The Secretary Of The Army Frangible sabot
WO2013140182A1 (en) * 2012-03-22 2013-09-26 Graham Ammunition Limited Ammunition with multiple projectiles
US20140290521A1 (en) * 2013-04-01 2014-10-02 Olin Corporation Shotshell with reduced dispersion of projectiles
US9250048B2 (en) * 2013-04-01 2016-02-02 Olin Corporation Shotshell with reduced dispersion of projectiles
US20150153145A1 (en) * 2013-12-02 2015-06-04 Bart David Steadman Bullet Shell Casing For Smooth Bore Hunting Guns

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