WO2013154443A1 - Bullet projectile for smooth-bore firearms - Google Patents

Bullet projectile for smooth-bore firearms Download PDF

Info

Publication number
WO2013154443A1
WO2013154443A1 PCT/PL2013/000039 PL2013000039W WO2013154443A1 WO 2013154443 A1 WO2013154443 A1 WO 2013154443A1 PL 2013000039 W PL2013000039 W PL 2013000039W WO 2013154443 A1 WO2013154443 A1 WO 2013154443A1
Authority
WO
WIPO (PCT)
Prior art keywords
bullet
trailing section
blades
projectile
cylindrical
Prior art date
Application number
PCT/PL2013/000039
Other languages
French (fr)
Inventor
Jan OLSZEWSKI
Original Assignee
Olszewski Jan
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 Olszewski Jan filed Critical Olszewski Jan
Publication of WO2013154443A1 publication Critical patent/WO2013154443A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/64—Joining a non-plastics element to a plastics element, e.g. by force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/342—Preventing air-inclusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/22—Projectiles of cannelured type
    • F42B10/24—Projectiles of cannelured type with inclined grooves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/34—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect expanding before or on impact, i.e. of dumdum or mushroom type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B7/00—Shotgun ammunition
    • F42B7/02—Cartridges, i.e. cases with propellant charge and missile
    • F42B7/10—Ball or slug shotgun cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/777—Weapons
    • B29L2031/7772—Cartridges

Definitions

  • This invention relates to a cylindrical bullet projectile intended for firing from smooth-bore shotguns.
  • Known cylindrical projectiles for smooth-bore firearms are made as lead casts, usually ribbed, whereas their ribs constitute a whole with the projectile body.
  • Known projectiles are provided with wads of various kinds, located in the rear part of the projectile and used as flight stabilisation means.
  • a projectile disclosed in the Polish Patent No. PL210994 as a cylindrical projectile with an expansion tip embedded in its head.
  • the projectile has a trailing section with flight stabilisation blades located in grooves on the cylindrical wall of the projectile, and inclined on this wall at an angle equal or greater than 1° from the geometrical axis of the projectile.
  • a projectile according to this invention comprising a cylindrical bullet with an expansion tip embedded in its head, as well as a trailing section connected to such bullet, with flight stabilisation blades located in groves on the cylindrical wall of the bullet, and inclined on this wall at an angle equal or greater than 1° from the geometrical axis of the bullet, characterized in that the expansion tip embedded in the bullet head has rims, and the bullet with groves on its cylindrical surface is integral with the trailing section that has at least two flight stabilisation blades located at the circumference of its body, whereas the length of the blades significantly exceeds the height of the trailing section body.
  • the blades extend from the bottom base of the trailing section throughout the entire height of its body and the cylindrical part of the bullet, and their elongated ends are located in groves on the cylindrical wall of the bullet.
  • the blades preferably have arched ends at their tops.
  • the trailing section body has a projection of shape corresponding to the recess in the bottom part of the bullet, whereas the recess and the projection have rims on their circumference, and moreover, the projection of the trailing section has at least one pass-through hole, and there is an empty hole in the base of the trailing section body.
  • This invention solves the problem of designing a projectile that achieves rotational movement after leaving the smooth-bore barrel of a firearm, resulting in ballistic characteristics of such a firearm approaching these of a rifled firearm.
  • FIG. 1 presents an external view of the projectile
  • Fig. 2 - a longitudinal section of the projectile
  • Fig. 3 an external view of the grooved, cylindrical bullet
  • Fig. 4 - a longitudinal section of the cylindrical bullet.
  • the projectile comprises a grooved, cylindrical bullet 1 with an expansion tip 2 with rims embedded in its head.
  • the bullet has a trailing section with at least two flight stabilisation blades 3 located on the circumference of the trailing section.
  • the number of flight stabilisation blades depends on the calibre of the projectile. There are 10 flight stabilisation blades in the preferred example of embodiment.
  • the length of the blades significantly exceeds the height of the trailing section body and the blades extend from the bottom base of the trailing section, throughout the entire height of its body, and their elongated ends are located in groves 4 on the cylindrical wall of the bullet and inclined on this wall at an angle in the range of 8°-12° from the geometrical axis of the bullet.
  • the trailing section body has a projection 10 of shape corresponding to the recess 9 in the bottom part of the bullet.
  • the recess 9 and the projection 10 have rims 11 on their circumference, to allow for joining the bullet and the trailing section during the assembly of the projectile.
  • a hole 6 is located on the longitudinal axis of the trailing section to evacuate air when assembling the bullet 1 with the trailing section 3. Inside the bullet, under the expansion tip 2 with rims located in the head, there is a blind hole 5 determining the magnitude of mushrooming, and on the exterior surface of the bullet, there are notches 7 to facilitate mushrooming.
  • the trailing section blades 3 have arched ends 8 at their tops to reduce air resistance.
  • An empty hole 12 is located in the base of the trailing section body.
  • the use of the above mentioned trailing section has allowed for achieving both the stabilisation due to the relocation of the centre of gravity, as well as the rotational stabilisation.
  • Such a design makes ballistic characteristics of a smooth-bore firearm approach these of a riffled firearm. Thanks to elastic deformations, the blades are not destroyed while the projectile travels through the barrel, and preserve their function of imparting rotational movement to the projectile by proper flow of air around them after the projectile has left the barrel. Moreover, thanks to minimal friction due to small contact area of blade ridges with barrel surface, the projectile does not wear the barrel bore and, thanks to elastic deformations of the blades, does not decalibrate the barrel choke.
  • the bullet can be made of steel, non-ferrous metals or composite materials.
  • the trailing section with flight stabilisation blades integral with the bullet can be made of polyethylene.
  • the two kinds of stabilisation acting together on the projectile due to the relocation of the centre of gravity and due to the rotational movement, maximise target accuracy , which provides good ballistic performance close to that of a riffled firearm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Catching Or Destruction (AREA)

Abstract

A projectile for smooth-bore firearms comprising a cylindrical bullet with a expansion tip embedded in its head, and a connected trailing section with flight stabilisation blades located in grooves on the cylindrical wall of the bullet and inclined on this wall at an angle equal or greater than 1° from the geometrical axis of the bullet. It is characterised in that the expansion tip (2) embedded in the bullet head has rims, and the bullet with grooves (4) on its cylindrical surface is integral with the trailing section having at least two flight stabilisation blades (3) located at the circumference of its body. The blades preferably have arched ends (8) at their tops. Inside the bullet, under the expansion tip (2) with rims, there is a blind hole (5), and there are notches (7) on the exterior surface of the bullet. In its bottom part, the bullet has a recess (9) of shape corresponding to the trailing section projection (10). An empty hole (12) is located in the base of the trailing section body.

Description

Bullet projectile for smooth-bore firearms
TECHNICAL FIELD
This invention relates to a cylindrical bullet projectile intended for firing from smooth-bore shotguns.
BACKGROUND ART
Known cylindrical projectiles for smooth-bore firearms are made as lead casts, usually ribbed, whereas their ribs constitute a whole with the projectile body. Known projectiles are provided with wads of various kinds, located in the rear part of the projectile and used as flight stabilisation means. Also known is a projectile disclosed in the Polish Patent No. PL210994 as a cylindrical projectile with an expansion tip embedded in its head. The projectile has a trailing section with flight stabilisation blades located in grooves on the cylindrical wall of the projectile, and inclined on this wall at an angle equal or greater than 1° from the geometrical axis of the projectile.
DISCLOSURE OF THE INVENTION
A projectile according to this invention, comprising a cylindrical bullet with an expansion tip embedded in its head, as well as a trailing section connected to such bullet, with flight stabilisation blades located in groves on the cylindrical wall of the bullet, and inclined on this wall at an angle equal or greater than 1° from the geometrical axis of the bullet, characterized in that the expansion tip embedded in the bullet head has rims, and the bullet with groves on its cylindrical surface is integral with the trailing section that has at least two flight stabilisation blades located at the circumference of its body, whereas the length of the blades significantly exceeds the height of the trailing section body. The blades extend from the bottom base of the trailing section throughout the entire height of its body and the cylindrical part of the bullet, and their elongated ends are located in groves on the cylindrical wall of the bullet. The blades preferably have arched ends at their tops. Inside the bullet, under the expansion tip, there is a blind hole determining the magnitude of mushrooming, and on the exterior surface of the bullet, there are notches to facilitate mushrooming. The trailing section body has a projection of shape corresponding to the recess in the bottom part of the bullet, whereas the recess and the projection have rims on their circumference, and moreover, the projection of the trailing section has at least one pass-through hole, and there is an empty hole in the base of the trailing section body.
This invention solves the problem of designing a projectile that achieves rotational movement after leaving the smooth-bore barrel of a firearm, resulting in ballistic characteristics of such a firearm approaching these of a rifled firearm.
BRIEF DESCRIPTION OF THE DRAWINGS
A preferred example of embodiment of the invention is presented on the drawings, where Fig. 1 presents an external view of the projectile, Fig. 2 - a longitudinal section of the projectile, Fig. 3 - an external view of the grooved, cylindrical bullet, Fig. 4 - a longitudinal section of the cylindrical bullet.
EXAMPLE FOR CARRYING OUT THE INVENTION
The projectile comprises a grooved, cylindrical bullet 1 with an expansion tip 2 with rims embedded in its head. The bullet has a trailing section with at least two flight stabilisation blades 3 located on the circumference of the trailing section. The number of flight stabilisation blades depends on the calibre of the projectile. There are 10 flight stabilisation blades in the preferred example of embodiment. The length of the blades significantly exceeds the height of the trailing section body and the blades extend from the bottom base of the trailing section, throughout the entire height of its body, and their elongated ends are located in groves 4 on the cylindrical wall of the bullet and inclined on this wall at an angle in the range of 8°-12° from the geometrical axis of the bullet. The trailing section body has a projection 10 of shape corresponding to the recess 9 in the bottom part of the bullet. The recess 9 and the projection 10 have rims 11 on their circumference, to allow for joining the bullet and the trailing section during the assembly of the projectile. A hole 6 is located on the longitudinal axis of the trailing section to evacuate air when assembling the bullet 1 with the trailing section 3. Inside the bullet, under the expansion tip 2 with rims located in the head, there is a blind hole 5 determining the magnitude of mushrooming, and on the exterior surface of the bullet, there are notches 7 to facilitate mushrooming. The trailing section blades 3 have arched ends 8 at their tops to reduce air resistance. An empty hole 12 is located in the base of the trailing section body.
The use of the above mentioned trailing section has allowed for achieving both the stabilisation due to the relocation of the centre of gravity, as well as the rotational stabilisation. Such a design makes ballistic characteristics of a smooth-bore firearm approach these of a riffled firearm. Thanks to elastic deformations, the blades are not destroyed while the projectile travels through the barrel, and preserve their function of imparting rotational movement to the projectile by proper flow of air around them after the projectile has left the barrel. Moreover, thanks to minimal friction due to small contact area of blade ridges with barrel surface, the projectile does not wear the barrel bore and, thanks to elastic deformations of the blades, does not decalibrate the barrel choke. The bullet can be made of steel, non-ferrous metals or composite materials. The trailing section with flight stabilisation blades integral with the bullet can be made of polyethylene.
At the moment of primer puncturing, powder ignition occurs, and the resulting powder gas pressure pushes the projectile towards the barrel muzzle with minimal resistance. At that moment, plastic blades of the trailing section get arranged in the barrel bore, and the projectile leaves the barrel. Immediately after leaving the barrel, the blades elastically return to their previous position, and the stream of air flowing around the projectile wall forces it to rotate.
The two kinds of stabilisation acting together on the projectile, due to the relocation of the centre of gravity and due to the rotational movement, maximise target accuracy , which provides good ballistic performance close to that of a riffled firearm.

Claims

Claims
A projectile comprising a cylindrical bullet with a expansion tip embedded in its head and a trailing section connected to said bullet with flight stabilisation blades located in groves on the cylindrical wall of the bullet and inclined on this wall at an angle equal or greater than 1° wherein the expansion tip (2) embedded in the bullet head (1) has rims, whereas a blind hole (5) is located under the expansion tip with rims (2), and the bullet with grooves (4) on its cylindrical surface is integral with the trailing section having at least two flight stabilisation blades (3) located in the circumference of its body, whereas the length of the blades significantly exceeds the height of the trailing section body, extending from the bottom base of the trailing section throughout the entire height of its body and the cylindrical part of the bullet (1), and the elongated ends of flight stabilisation blades (3) are located in grooves (4) on the cylindrical wall of the bullet, and moreover, the trailing section body has a projection (10) of shape corresponding to the recess (9) in the bottom part of the bullet, whereas the trailing section projection (10) has at least one pass- through hole (6), and an empty hole (12) is located in the base of the trailing section body.
A projectile according to claim 1, wherein the grooves on the cylindrical wall of the bullet with the flight stabilisation blades placed therein are inclined on this wall at an angle in the range of 10 - 20° from the geometrical axis of the bullet.
A projectile according to claim 1, wherein the trailing section blades (3) have arched ends (8) at their tops.
A projectile according to claim 1, wherein notches (7) are located on the exterior surface of the bullet head (1).
A projectile according to claim 1, wherein the recess (9) in the bottom part of the bullet and the trailing section projection (10) have rims (11) on their circumference.
PCT/PL2013/000039 2012-04-10 2013-03-26 Bullet projectile for smooth-bore firearms WO2013154443A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL398786A PL220108B1 (en) 2012-04-10 2012-04-10 A bullet for smoothbore weapons
PLP.398786 2012-04-10

Publications (1)

Publication Number Publication Date
WO2013154443A1 true WO2013154443A1 (en) 2013-10-17

Family

ID=48446578

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/PL2013/000039 WO2013154443A1 (en) 2012-04-10 2013-03-26 Bullet projectile for smooth-bore firearms

Country Status (2)

Country Link
PL (1) PL220108B1 (en)
WO (1) WO2013154443A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170205213A1 (en) * 2014-08-26 2017-07-20 Renat Abdulberovich Yusupov Caliber shell with rigid mounting to housing of stabilizing fins
RU2654115C1 (en) * 2017-05-22 2018-05-16 Владимир Анатольевич Фролов Small arms cartridge bullet
IT201800020380A1 (en) * 2018-12-20 2020-06-20 Michele Bisaro HIGH STOP POWER BULLET BALL
CZ308837B6 (en) * 2019-03-27 2021-06-30 Vratislav Ing. Perna Powered rotating projectile with spiral helical grooves and protrusions

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800758A1 (en) * 1968-10-03 1970-06-11 Dynamit Nobel Ag Ammunition for hunting hares etc
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
PL210994A1 (en) 1978-11-15 1979-09-10 Inst Budownictwa Mech OVERLOAD INDICATOR
EP1156297A1 (en) * 2000-05-15 2001-11-21 SM Schweizerische Munitionsunternehmung AG Expanding bullet and process for manufacturing same
US6453820B1 (en) * 2001-10-15 2002-09-24 Ralph D. Anderson Rotating tubular projectile
US6971315B2 (en) * 2000-03-07 2005-12-06 Ruag Ammotec Gmbh Reduced-contaminant deformable bullet, preferably for small arms
PL210994B1 (en) * 2007-02-27 2012-03-30 Jan Olszewski Brenneke

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1800758A1 (en) * 1968-10-03 1970-06-11 Dynamit Nobel Ag Ammunition for hunting hares etc
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
PL210994A1 (en) 1978-11-15 1979-09-10 Inst Budownictwa Mech OVERLOAD INDICATOR
US6971315B2 (en) * 2000-03-07 2005-12-06 Ruag Ammotec Gmbh Reduced-contaminant deformable bullet, preferably for small arms
EP1156297A1 (en) * 2000-05-15 2001-11-21 SM Schweizerische Munitionsunternehmung AG Expanding bullet and process for manufacturing same
US6453820B1 (en) * 2001-10-15 2002-09-24 Ralph D. Anderson Rotating tubular projectile
PL210994B1 (en) * 2007-02-27 2012-03-30 Jan Olszewski Brenneke

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170205213A1 (en) * 2014-08-26 2017-07-20 Renat Abdulberovich Yusupov Caliber shell with rigid mounting to housing of stabilizing fins
US9958241B2 (en) * 2014-08-26 2018-05-01 Renat Abdulberovich Yusupov Caliber shell with rigid mounting to housing of stabilizing fins
RU2654115C1 (en) * 2017-05-22 2018-05-16 Владимир Анатольевич Фролов Small arms cartridge bullet
IT201800020380A1 (en) * 2018-12-20 2020-06-20 Michele Bisaro HIGH STOP POWER BULLET BALL
CZ308837B6 (en) * 2019-03-27 2021-06-30 Vratislav Ing. Perna Powered rotating projectile with spiral helical grooves and protrusions

Also Published As

Publication number Publication date
PL398786A1 (en) 2013-10-14
PL220108B1 (en) 2015-08-31

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