US3713388A - Projectile for smooth barrel hunting guns or rifles with auxiliary wad provided with helical side tabs - Google Patents

Projectile for smooth barrel hunting guns or rifles with auxiliary wad provided with helical side tabs Download PDF

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Publication number
US3713388A
US3713388A US00084560A US3713388DA US3713388A US 3713388 A US3713388 A US 3713388A US 00084560 A US00084560 A US 00084560A US 3713388D A US3713388D A US 3713388DA US 3713388 A US3713388 A US 3713388A
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United States
Prior art keywords
projectile
vane member
wad
auxiliary
configuration
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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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US00084560A
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English (en)
Inventor
E Pontoriero
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Individual
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Individual
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Publication of US3713388A publication Critical patent/US3713388A/en
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    • 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
    • F42B7/08—Wads, i.e. projectile or shot carrying devices, therefor
    • 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

Definitions

  • the invention concerns a projectile for smooth barrel hunting guns or rifles.
  • the projectile is inserted into a cartridge housing the charge, the priming system and [30] Fore'gn Apphcatmn Pnomy Data sealing wad of limited thickness.
  • the projectile com- Oct. 28.
  • I969 ltaly ..60009 A/69 prises a Substantially Spherical y made of lead or other suitable material and is provided in its lower sec- [52] U Cl 102/38 102/92 4 102/93 tion with a flat chamfered base.
  • the spherical projec- 102/95 tile includes an internal cavity connected to an auxilia- 51 l t Cl F42, 7/00 ry wad, cylindrical in shape and containing helical tabs 1 formed by grooves
  • the diamaer ofthevpmjectil and [58] held of Search the auxiliary wad correspond to the internal diameter of the cartridge which houses the projectile.
  • the SUMMARY OF THE INVENTION THe present invention concerns a projectile for use in smooth barrel hunting guns and which is inserted into a cartridge containing the propulsion charge and a sealing disc wad of compressed felt.
  • the projectile consists of a lead body being substantially spherical in configuration chamfered at the bottom and including an internal cavity substantially frusto-conical in configuration within which the tang of an auxiliary wad is located.
  • the auxiliary wad is generally cylindrical in configuration and provided on the outer surface with helical grooves defining at their intersection helical tabs inclined in the direction of movement.
  • the projectile of the present invention minimizes deviation of trajectory from the sighting line while insuring an impact attitude permitting maximum penetration.
  • the projectile of the present invention is substantially spherical in configuration changes in attitude are avoided.
  • the internal cavity of the projectile in addition to housing the tang of the wad, also effects lightening of the lead projectile, permitting the blasting charge to be increased resulting in long-range, precision shots.
  • FIGURE is a cross-sectional view illustrating the cartridge case, the conventional powder charge and wad and the improved projectile and auxiliary wad construction.
  • the cartridge case conventional in construction, is designated generally by reference numeral 1 and contains powder charge 2 and conventional wad 3.
  • the projectile is made of lead or other conventional alloys and is substantially spherical in configuration terminating in a chamfered base 4a perpendicular to axis X-X of the projectile and the cartridge. It is to be understood that the diameter of the projectile 4 is sized to the caliber of the arm for which it is intended to be used. Within projectile 4 is located a cavity 4b substantially frusto-conical in configuration and designed to lighten the weight of the projectile while forming a housing to receive the tang 5 of an auxiliary wad 6 which is manufactured by conventional molding and milling operations employing plastics or other suitable materials.
  • Wad or vane member 6 is generally cylindrical in configuration and is provided outwardly with helical grooves defining outwardly helical tabs 6a, the purpose of which will be explained hereinafter.
  • Wad 6 is provided at its lower section with cavity 6b.
  • the cavity 4b and the tang 5 of the wad 6 have smooth surfaces while wad 6 adheres to the projectile 4 by virtue of friction between the tang 5 and the housing seat 4b.
  • the pressure of the bursting gas acts on the bottom base of wad 6 through the body of sealing wad 3, therefore, the pressure at the moment of firing transforms effectively the wad 6 and the projectile 4 into a single body.
  • the projectile 4 and auxiliary wad 6 and sealing wad 3 continue to act as a single body and are subjected to the action of two unequal and opposing forces, i.e., the resistance of the air acting on the front portion of the projectile 4 and the force exerted by the gases upon the back portion of the sealing wad 3.
  • the thrust forces prevail propelling forward the combined projectile 4 and wads 6 and 3.
  • a larger powder charge 2 may be employed while also permitting greater latitudes in the selection of the quality of powder, the type of primer or cartridge case and the type of wadding. All this can be accomplished without endangering the pressure resistance of the rifle andwithout modifying its recoil force.
  • the auxiliary wad 6 is of such a height so as to substitute for a stretch corresponding to approximately two-thirds of the conventional wad 3, which is therefore smaller and can accomplish only the sealing action in respect to gases necessary to improve the effect of the bursting action.
  • a projectile system for smooth bore firearms comprising:
  • a projectile substantially spherical in configuration said sealing means including a wad disposed rearterminating at the bottom in a flat chamfered base wardly of said vane member. and including imemal i y 2.
  • said vane member being generally cylindrical in configuration and including helical grooves in the surface thereof defining outwardly helical tabs against which the air strikes to impart rotational movement to said projectile and said vane member and to release said projectile from said vane member;

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Portable Nailing Machines And Staplers (AREA)
US00084560A 1969-10-28 1970-10-28 Projectile for smooth barrel hunting guns or rifles with auxiliary wad provided with helical side tabs Expired - Lifetime US3713388A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6000969 1969-10-28

Publications (1)

Publication Number Publication Date
US3713388A true US3713388A (en) 1973-01-30

Family

ID=11289970

Family Applications (1)

Application Number Title Priority Date Filing Date
US00084560A Expired - Lifetime US3713388A (en) 1969-10-28 1970-10-28 Projectile for smooth barrel hunting guns or rifles with auxiliary wad provided with helical side tabs

Country Status (3)

Country Link
US (1) US3713388A (enrdf_load_stackoverflow)
DE (1) DE7039767U (enrdf_load_stackoverflow)
FR (1) FR2066065A5 (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043267A (en) * 1970-08-27 1977-08-23 Kabushiki Kaisha Kawaguchiya Hayashi Juho Kayaku-Ten Rocket bullet
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
US4175493A (en) * 1977-11-07 1979-11-27 John Daily Patch for muzzle loading firearms
GB2168792A (en) * 1984-12-12 1986-06-25 Peter Ian Johnson Wad with bearing
GB2179427A (en) * 1985-08-03 1987-03-04 Alloy Residues Limited Air gun pellets
WO1992003693A1 (en) * 1990-08-23 1992-03-05 International Shooter Development Fund, Inc. Match-grade rifle cartridge with improved components
US5479861A (en) * 1994-01-03 1996-01-02 Kinchin; Anthony E. Projectile with sabot
RU2163998C1 (ru) * 2000-04-05 2001-03-10 Кривошеенко Алексей Юрьевич Снаряд гладкоствольного оружия
RU2225974C1 (ru) * 2002-09-13 2004-03-20 Автономная некоммерческая организация "Центральный научно-исследовательский и опытно-конструкторский институт "Центр перспективных исследований" Способ придания вращения пулевому или иному снаряду и огнестрельный комплекс яугонена для его осуществления
US20090151593A1 (en) * 2005-10-13 2009-06-18 Udo Winter Sub-Caliber Projectile
JP2013210182A (ja) * 2013-05-20 2013-10-10 Nippon Sodan Kk スラグ弾頭保持部材
US9599444B2 (en) * 2013-11-07 2017-03-21 Felix RACHLIN Accelerator
US10480914B2 (en) * 2017-03-21 2019-11-19 College Of William & Mary Biodegradable shotgun wad system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487063B1 (fr) * 1980-07-18 1986-11-14 Maki Nagatoshi Bourre et projectile pour cartouche de fusil de chasse
US4669385A (en) * 1983-09-28 1987-06-02 Nagatoshi Maki Wad for shotgun shotshell
FR2687217B1 (fr) * 1992-02-11 1995-06-09 Fn Engineerung Sa Munition multiple et arme pour la mise en óoeuvre d'une telle munition.

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4043267A (en) * 1970-08-27 1977-08-23 Kabushiki Kaisha Kawaguchiya Hayashi Juho Kayaku-Ten Rocket bullet
US4063511A (en) * 1976-07-21 1977-12-20 Bullard James M Spinning shot gun projectile
US4175493A (en) * 1977-11-07 1979-11-27 John Daily Patch for muzzle loading firearms
GB2168792A (en) * 1984-12-12 1986-06-25 Peter Ian Johnson Wad with bearing
GB2179427A (en) * 1985-08-03 1987-03-04 Alloy Residues Limited Air gun pellets
WO1992003693A1 (en) * 1990-08-23 1992-03-05 International Shooter Development Fund, Inc. Match-grade rifle cartridge with improved components
US5275108A (en) * 1990-08-23 1994-01-04 Endowment Fund Of The International Shooter Development Fund, Inc. Match-grade rifle cartridge with improved components
US5479861A (en) * 1994-01-03 1996-01-02 Kinchin; Anthony E. Projectile with sabot
RU2163998C1 (ru) * 2000-04-05 2001-03-10 Кривошеенко Алексей Юрьевич Снаряд гладкоствольного оружия
RU2225974C1 (ru) * 2002-09-13 2004-03-20 Автономная некоммерческая организация "Центральный научно-исследовательский и опытно-конструкторский институт "Центр перспективных исследований" Способ придания вращения пулевому или иному снаряду и огнестрельный комплекс яугонена для его осуществления
US20090151593A1 (en) * 2005-10-13 2009-06-18 Udo Winter Sub-Caliber Projectile
US7934455B2 (en) * 2005-10-13 2011-05-03 Udo Winter Sub-caliber projectile
JP2013210182A (ja) * 2013-05-20 2013-10-10 Nippon Sodan Kk スラグ弾頭保持部材
US9599444B2 (en) * 2013-11-07 2017-03-21 Felix RACHLIN Accelerator
US10480914B2 (en) * 2017-03-21 2019-11-19 College Of William & Mary Biodegradable shotgun wad system

Also Published As

Publication number Publication date
FR2066065A5 (enrdf_load_stackoverflow) 1971-08-06
DE7039767U (de) 1971-03-25

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