US20170167837A1 - Monolithic bullet projectile for rifle firearms and method of making same - Google Patents

Monolithic bullet projectile for rifle firearms and method of making same Download PDF

Info

Publication number
US20170167837A1
US20170167837A1 US15/355,090 US201615355090A US2017167837A1 US 20170167837 A1 US20170167837 A1 US 20170167837A1 US 201615355090 A US201615355090 A US 201615355090A US 2017167837 A1 US2017167837 A1 US 2017167837A1
Authority
US
United States
Prior art keywords
bullet
diameter
trailing
section
relieving
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.)
Abandoned
Application number
US15/355,090
Other languages
English (en)
Inventor
Dobromir Goryluk
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
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20170167837A1 publication Critical patent/US20170167837A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • F42B12/72—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material
    • F42B12/74—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the material of the core or solid body
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B14/00—Projectiles or missiles characterised by arrangements for guiding or sealing them inside barrels, or for lubricating or cleaning barrels
    • F42B14/02—Driving bands; Rotating bands
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/02—Bullets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B33/00—Manufacture of ammunition; Dismantling of ammunition; Apparatus therefor

Definitions

  • the invention relates to a monolithic bullet projectile for rifle firearms and to a simple method of making same.
  • the invention relates to a monolithic bullet projectile for rifle firearms, having cylindrical profile of front guiding section (CP) with specific short head (CG) of half-circle or cone shape, and the back trailing section (CW), situated behind the centre of gravity (SC) of the whole bullet, having radial profiling comprising the relieving grooves (RO) and the trailing rings (PW), situated in the following order: trailing ring-relieving groove-trailing ring or multiplication of that configuration.
  • CP front guiding section
  • CG specific short head
  • CW centre of gravity
  • SC centre of gravity
  • RO relieving grooves
  • PW trailing rings
  • the invention relates further to a method of making the bullet according to the invention wherein the guiding section of the bullet (CP) is calibrated independently up to a diameter which is lower than or equal to a diameter of lands ( ⁇ P) of the rifled bore of the barrel, and the radial profiling of the trailing section of the bullet (CW), comprising the relieving grooves (RO) and trailing rings (PW), is made in a single technological operation, applying for the making of trailing rings (PW) the effect of upsetting of the homogeneous material of the bullet along the edge of the radial relieving groove (RO) while the trailing section of the bullet (CW) is calibrated independently up to a diameter which is lower than or equal to a diameter of the rifles ( ⁇ B) of the rifled bore of the barrel.
  • independent calibration of a diameter of lands ( ⁇ P) and of a diameter of the rifles ( ⁇ B) allows for individual fitting of the external dimensions of the bullet to any barrel of the rifle firearm, even if the wear of the rifle is significant which is crucial in the process of extending the lifetime of the firearm.
  • FIG. 1 presents a half-section of the bullet projectile
  • FIG. 2 presents a cross-section of the typical rifled barrel bore of a firearm
  • FIG. 3 presents a scheme of the operation of cutting the starting material for the bullet and of shaping the bullet head—front view (left) and side view (right);
  • FIG. 3 a presents the start of the operation of cutting the weighed billet
  • FIG. 3 b presents the end of the operation of cutting the weighed billet
  • FIG. 4 presents scheme of the operation of calibrating the guiding section of the bullet, including finishing the bottom surface
  • FIG. 5 presents scheme of the operation of cutting the relieving grooves including simultaneous profiling of the guiding rings of the bullet—front view (left) and side view (right);
  • FIG. 5 a presents the start of the operation of cutting the relieving grooves
  • FIG. 5 b presents the end of the operation of cutting the relieving grooves
  • FIG. 6 presents the scheme of the operation of calibrating the trailing section of the bullet.
  • the bullet projectile made fully of copper or copper alloys has typical cylindrical profile of guiding section (CP) with very short head (CG) of half-circle or cone shape.
  • Trailing section of the bullet (CW), situated in its back behind its centre of gravity (SC), has radial profiling comprising the relieving grooves (RO) of a diameter which is lower than a diameter of the lands ( ⁇ P) of the rifled barrel bore and the trailing rings (PW) of a diameter which is lower than or equal to a diameter of the rifles ( ⁇ B) of the rifled barrel bore.
  • Short bottom section of the bullet (CD) is terminated with a truncated cone or with a flat.
  • FIG. 2 A cross-section of typical rifled barrel bore of a firearm is shown in FIG. 2 .
  • Relieving grooves diminish the radial stiffness of bullet solid body, resulting in reduction of force needed to overcome the resistance of rifled barrel bore to the bullet driving along.
  • Trailing rings which are responsible for providing gyroscopic stabilization effect to the bullet, increase tightness between bullet body and rifled barrel bore, resulting in reduction of working pressure losses of gunpowder gases in the back space of the barrel.
  • Guiding section of the bullet comprises a smooth cylindrical area of a diameter equal to or lower than a diameter of the lands ( ⁇ P) of the rifled barrel bore, providing a slide fit of that section of the bullet in the barrel bore which improves characteristics of interior ballistics through diminishing the resistance related to surface friction during driving of the bullet along the barrel bore.
  • Short head section of the bullet which can comprise a spherical cap, a hemisphere, a truncated hemisphere, a cone, a truncated cone or a flat, ensures a stable flight of the bullet when it flies through light hurdles (shrubs, grass) due to edge stabilization which is created during flight because of the asymmetrical air pressure growing on the head of bullet. This is crucial when the bullet is used in huntsman's firearms. In the same time the sharp edge which is formed on the bullet in the spot where the bullet head (CG) continues into cylindrical guiding section of the bullet (CP) ensures ideally cut shape of the bullet hole in the target. This is crucial when the bullet is used in sport firearms.
  • Design of the bullet projectile of the invention improves (as compared to the state of the art) interior ballistics characteristics (inside the barrel bore), exterior ballistics characteristics (in the air) and final ballistics characteristics (in the target) and ensures full stabilization of the bullet flight path through combining the effects of gyroscopic stabilization, fin stabilization and edge stabilization, which cannot be achieved using the known so far designs of bullet projectiles for rifle firearms.
  • a method of making a monolithic bullet projectile is characterized by simplicity of technological process which can be implemented in workshop conditions, even without mechanical drive. This is crucial in the process of ammunition reloading in the household or in the field for hunting or sport purpose.
  • the following four technological operations are suitable for making a monolithic bullet projectile of any caliber and weight: cutting the weighed billet, calibrating the guiding section of the bullet, cutting the relieving grooves, calibrating the trailing section of the bullet.
  • FIG. 3 Scheme of the operation of cutting the starting material for the bullet and of shaping the bullet head is shown in FIG. 3 .
  • Front view of cutting and shaping operation is show on the left side of FIG. 3 .
  • Side view of cutting and shaping operation is shown on the right side of FIG. 3 .
  • Cutting which includes shaping of bullet head
  • the starting material ( 1 ) supplied in the form of either a wire or a rod, of a diameter which is equal to or higher than a diameter of lands of final barrel bore of the rifle firearm, to obtain billets ( 2 ) corresponding to the required bullet weight, is performed through combining the rotary motion ( ⁇ ) of starting material and radial motion (r) of the adequately shaped cutting roll ( 3 ), against the pair of supporting rolls ( 4 ).
  • the start of cutting operation is shown in FIG. 3 a.
  • FIG. 4 Scheme of the operation of calibrating the guiding section of the bullet, including finishing the bottom surface, is shown in FIG. 4 .
  • Calibrating the guiding section of the bullet ( 2 ) up to a diameter which is equal to or lower than a diameter of the lands ( ⁇ P) of the final barrel bore of the firearm is made by redrawing (s) with a punch ( 5 ) in a die ( 6 ) having a cone-shaped input hole and a cylindrical calibrating hole ( ⁇ P). Pressing the head of the punch ( 5 ) against the bottom section of the bullet results in simultaneous finishing of the surface of the bullet's bottom (back flat).
  • FIG. 5 Scheme of the operation of cutting the relieving grooves including simultaneous profiling of the guiding rings of the bullet is shown in FIG. 5 .
  • Front view of operation of cutting the relieving grooves is shown on the left side of FIG. 5 .
  • Side view of operation of cutting the relieving grooves is shown on the right side of FIG. 5 .
  • Cutting the relieving grooves on the guiding section of the bullet including simultaneous profiling of the guiding rings (through upsetting of the bullet material along both edges of the radial groove which is being cut off), is made by combining the rotary motion ( ⁇ ) of the billet ( 2 ) and radial motion (r) of the cutting roll or set of cutting rolls ( 7 ) against a pair of cylindrical supporting rolls ( 8 ).
  • Cutting the relieving grooves should be done such that the depth of the cuts should go deeper than the diameter of the lands of the final barrel bore of the firearm, and the height of the upsetting of the guiding rings should be higher than the depth of the rifles of the final barrel bore of the firearm.
  • the start of cutting operation is show in FIG. 5 a.
  • Calibrating the trailing section of the bullet ( 2 ) formed of series of trailing rings, up to a diameter which is equal to or lower than a diameter of the rifles ( ⁇ B) of the final barrel bore is made by one step redrawing (s) using a punch ( 9 ) in a die ( 10 ) with an input cone-shaped hole and a cylindrical calibrating hole ( ⁇ B).
  • independent calibration of a diameter of lands ( ⁇ P) and of a diameter of the rifles ( ⁇ B) allows for individual fitting of the external dimensions of the bullet to any barrel of the rifle firearm, even if the wear of the rifle is significant which is crucial in the process of extending the lifetime of the firearm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
US15/355,090 2015-12-09 2016-11-18 Monolithic bullet projectile for rifle firearms and method of making same Abandoned US20170167837A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PLP.415209 2015-12-09
PL415209A PL227809B1 (pl) 2015-12-09 2015-12-09 Monolityczny pocisk do broni strzeleckiej i sposób jego wytwarzania

Publications (1)

Publication Number Publication Date
US20170167837A1 true US20170167837A1 (en) 2017-06-15

Family

ID=59019082

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/355,090 Abandoned US20170167837A1 (en) 2015-12-09 2016-11-18 Monolithic bullet projectile for rifle firearms and method of making same

Country Status (2)

Country Link
US (1) US20170167837A1 (pl)
PL (1) PL227809B1 (pl)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20190120603A1 (en) * 2017-10-19 2019-04-25 Richard C. Cole Projectile with radial grooves
USD852922S1 (en) 2017-09-14 2019-07-02 F. Richard Langner Slug for launching from a disruptor
USD853519S1 (en) 2017-09-14 2019-07-09 F. Richard Langner Piston for driving water out a disrupter
US20230152071A1 (en) * 2021-11-12 2023-05-18 Peter D. Rebar Metallic, non-leaded projectile for muzzle-loading firearms and methods of making and using the same
WO2023247562A1 (de) * 2022-06-20 2023-12-28 Swissp Defence Ag Geschoss mit umfangs- und/oder längsrille
WO2025253051A1 (en) * 2024-06-03 2025-12-11 Nammo Lapua Oy Bullet, method and apparatus for making bullet, and cartridge

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1582678A (en) * 1919-11-11 1926-04-27 Westinghouse Electric & Mfg Co Relay
US1582673A (en) * 1924-05-21 1926-04-27 Frank A Fahrenwald Rifle bullet
US3154016A (en) * 1961-01-12 1964-10-27 Albert W Frey Ballistic projectile
US3345949A (en) * 1965-09-27 1967-10-10 Nosler Partition Bullet Compan Bullet
US3918364A (en) * 1974-01-21 1975-11-11 Morris J Duer Bullet
DE29516889U1 (de) * 1995-04-27 1996-01-25 Bofors Carl Gustaf AB, Eskilstuna Überkalibriges Gewehrgeschoß
US5686693A (en) * 1992-06-25 1997-11-11 Jakobsson; Bo Soft steel projectile
DE102012003682A1 (de) * 2012-02-23 2014-02-13 Frank Mayer Bleifreies Expansions-Jagdgeschoss mit einstückigem Geschoss-Körper und unterschiedlicher Zahl von Führungs- bzw. Dicht-Ringen sowie verschiedenartig ausgebildeten Geschoss-Köpfen
US20170138709A1 (en) * 2014-06-24 2017-05-18 Peregrine Bullets (Pty) Ltd Long range bullet
US10023019B2 (en) * 2015-02-24 2018-07-17 Ford Global Technologies, Llc Rear suspension systems with rotary devices for laterally tiltable multitrack vehicles

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1582678A (en) * 1919-11-11 1926-04-27 Westinghouse Electric & Mfg Co Relay
US1582673A (en) * 1924-05-21 1926-04-27 Frank A Fahrenwald Rifle bullet
US3154016A (en) * 1961-01-12 1964-10-27 Albert W Frey Ballistic projectile
US3345949A (en) * 1965-09-27 1967-10-10 Nosler Partition Bullet Compan Bullet
US3918364A (en) * 1974-01-21 1975-11-11 Morris J Duer Bullet
US5686693A (en) * 1992-06-25 1997-11-11 Jakobsson; Bo Soft steel projectile
DE29516889U1 (de) * 1995-04-27 1996-01-25 Bofors Carl Gustaf AB, Eskilstuna Überkalibriges Gewehrgeschoß
DE102012003682A1 (de) * 2012-02-23 2014-02-13 Frank Mayer Bleifreies Expansions-Jagdgeschoss mit einstückigem Geschoss-Körper und unterschiedlicher Zahl von Führungs- bzw. Dicht-Ringen sowie verschiedenartig ausgebildeten Geschoss-Köpfen
US20170138709A1 (en) * 2014-06-24 2017-05-18 Peregrine Bullets (Pty) Ltd Long range bullet
US10023019B2 (en) * 2015-02-24 2018-07-17 Ford Global Technologies, Llc Rear suspension systems with rotary devices for laterally tiltable multitrack vehicles

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD852922S1 (en) 2017-09-14 2019-07-02 F. Richard Langner Slug for launching from a disruptor
USD853519S1 (en) 2017-09-14 2019-07-09 F. Richard Langner Piston for driving water out a disrupter
US20190120603A1 (en) * 2017-10-19 2019-04-25 Richard C. Cole Projectile with radial grooves
US20230152071A1 (en) * 2021-11-12 2023-05-18 Peter D. Rebar Metallic, non-leaded projectile for muzzle-loading firearms and methods of making and using the same
US12339107B2 (en) * 2021-11-12 2025-06-24 Peter D. Rebar Metallic, non-leaded projectile for muzzle-loading firearms and methods of making and using the same
WO2023247562A1 (de) * 2022-06-20 2023-12-28 Swissp Defence Ag Geschoss mit umfangs- und/oder längsrille
WO2025253051A1 (en) * 2024-06-03 2025-12-11 Nammo Lapua Oy Bullet, method and apparatus for making bullet, and cartridge

Also Published As

Publication number Publication date
PL227809B1 (pl) 2018-01-31
PL415209A1 (pl) 2017-06-19

Similar Documents

Publication Publication Date Title
US11307005B2 (en) Predictably fragmenting projectiles having internally-arranged geometric features
US12050093B2 (en) Projectile with enhanced ballistics
AU2012347410B2 (en) A bullet
US8893621B1 (en) Projectile
US9341455B2 (en) Expanding subsonic projectile and cartridge utilizing same
US6845717B1 (en) Bullet with an internally carried sub-projectile
US9157715B1 (en) Polymer marking projectile with integrated metallic sealing ring
US9157713B1 (en) Limited range rifle projectile
US9631910B2 (en) Expanding subsonic projectile and cartridge utilizing same
US10378867B2 (en) Cartridge
PL227809B1 (pl) Monolityczny pocisk do broni strzeleckiej i sposób jego wytwarzania
US9857155B2 (en) Rifle bullet
US9581402B2 (en) Projectile for use with a tapered bore gun
US7814837B2 (en) Hunting bullet with reduced aerodynamic resistance
US10823540B2 (en) Projectiles for ammunition and methods of making and using the same
US9234716B2 (en) Gun barrel rifling
RU157909U1 (ru) Оболочечная пуля
RU2451899C1 (ru) Бронебойный снаряд для нарезного огнестрельного оружия

Legal Events

Date Code Title Description
STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION