EP1500901A1 - Pfropfen für Schrotpatronen für Glattlaufschrotgewehre - Google Patents

Pfropfen für Schrotpatronen für Glattlaufschrotgewehre Download PDF

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Publication number
EP1500901A1
EP1500901A1 EP03425498A EP03425498A EP1500901A1 EP 1500901 A1 EP1500901 A1 EP 1500901A1 EP 03425498 A EP03425498 A EP 03425498A EP 03425498 A EP03425498 A EP 03425498A EP 1500901 A1 EP1500901 A1 EP 1500901A1
Authority
EP
European Patent Office
Prior art keywords
wad
cartridge
base
lateral wall
accordance
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.)
Withdrawn
Application number
EP03425498A
Other languages
English (en)
French (fr)
Inventor
Walter Zanoletti
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.)
Muninord di Zanoletti Walter
Original Assignee
Muninord di Zanoletti Walter
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 Muninord di Zanoletti Walter filed Critical Muninord di Zanoletti Walter
Priority to CA002436117A priority Critical patent/CA2436117A1/en
Priority to EP03425498A priority patent/EP1500901A1/de
Publication of EP1500901A1 publication Critical patent/EP1500901A1/de
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the present invention pertains to small-shot cartridges for smooth-bore shotguns or shooting rifles, and pertains in particular to a wad for steel small shot.
  • such cartridges comprise a case having an end percussion cap and containing a firing charge and bullets consisting of a plurality of lead or steel small shot.
  • the charge and the small shot may be separated by a wad, which can be shaped like a cup for containing the small shot proper and for functioning as a concentrator of the small-shot cluster.
  • steel small shot is, on the one hand, preferred compared to the use of lead small shot because of the known toxic action of the latter, and on the other hand, it is limited only to those rifles, whose barrel has a very smooth choke, called in slang "slippery union.”
  • steel small shot unlike the lead small shot, is neither compressed nor crushed, passing through the choke of the mouth of the barrel and, if a common choke with a truncated cone or straight union is used, it runs the risk of making the barrel explode.
  • the object of the present invention is to propose a cartridge wad for smooth-bore shotguns or shooting rifles, which makes it possible to use steel small shot with any type of barrel and related choke.
  • a wad for cartridges of smooth-bore shotguns or shooting rifles having a base turned towards the firing charge contained in the case, and a cylindrical lateral wall that extends from said base towards the firing direction, in which said cylindrical lateral wall of the wad and the case define between them an annular space intended to prevent the expansion of the small shot over the entire cross section of the barrel.
  • the diameter of the cylindrical lateral wall of the wad is less than that of its base, said lateral wall preventing the cluster of small shot produced by the explosion from striking against the bore of the barrel.
  • Figure 1 is an axial section of a cartridge, in which is inserted a wad for steel small shot according to a first embodiment.
  • Figure 2 is an axial section of a wad in a second embodiment.
  • Figures 3, 4 and 5 are perspective views of a wad for steel small shot according to other embodiments.
  • Figure 1 shows a cartridge for smooth-bore shotguns for steel small shot, comprising a case 11 having an end percussion cap 12 and containing, in order from the end, a firing charge 13 and a charge of steel small shot 14.
  • the small shot is arranged in a wad 15 in the form of a cup, or made up of a base 16 turned towards the firing charge 13 and of a cylindrical lateral wall 17 that extends from this base 16 and that is open forwards in the firing direction.
  • the case 11 is closed at the top by a disk 18.
  • the diameter of the cylindrical lateral wall 17 of the wad is less than that of its base 16, so that the case 11 and said cylindrical lateral wall 17 define a space 19 between them.
  • the diameter of the cylindrical lateral wall 17 may be one or two gauges less than that of its base 16, i.e., of the cartridge. The cylindrical lateral wall 17 thus limits the expansion of the cluster of steel small shot over a section suitable for passage through the choke of the barrel of the gun, preventing the shot from striking against the bore of the barrel.
  • the wad 15 may be provided, preferably close to its opening, with a whole or segmented, annular element 20, with a centering and guide function for the wad during its sliding in the barrel of the rifle.
  • annular portion 16' of the base 16 of the wad which protrudes in relation to the cylindrical lateral wall 17, may have a conical course, converging downwards to function as an air intake and to contribute to the slowing down of the wad in relation to the small shot following the front impact with the air.
  • the air intake for the wad 21 is embodied by making a series of longitudinal cuts 22 along an end annular portion of the lateral wall of the wad. Following the impact with the air, this end portion of the wad 21 opens thanks to the presence of the longitudinal cuts 22.
  • the annular guide element 20 is provided just below the end annular portion.
  • Figure 3 shows a wad 23 similar to that described in Figure 1, but in which, for its guiding in the barrel of the rifle, a plurality of longitudinal ribs 24 are provided along the lateral wall 17.
  • the wad 25 has two concentric cylindrical walls 26, 27, the more external one 26 having a diameter equal to the gauge of the cartridge and the more internal one 27 being one or two gauges less for containing the small shot.
  • Longitudinal cuts 28 can be provided on the external wall 26 to make possible the opening of the wall proper after the impact with the air.
  • Figure 5 shows another wad 29 similar to the one in the previous Figure (4), but in which the external wall 30, having longitudinal cuts 31, only partially surrounds the internal wall 32 from the base 33 of the wad. For example, good ballistic results were obtained with an external wall 30 with a height equal to about one third of the internal one 32.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP03425498A 2003-07-25 2003-07-25 Pfropfen für Schrotpatronen für Glattlaufschrotgewehre Withdrawn EP1500901A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002436117A CA2436117A1 (en) 2003-07-25 2003-07-25 Wad, particularly for steel small shot for cartridges of smooth-bore shotguns or shooting rifles
EP03425498A EP1500901A1 (de) 2003-07-25 2003-07-25 Pfropfen für Schrotpatronen für Glattlaufschrotgewehre

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002436117A CA2436117A1 (en) 2003-07-25 2003-07-25 Wad, particularly for steel small shot for cartridges of smooth-bore shotguns or shooting rifles
EP03425498A EP1500901A1 (de) 2003-07-25 2003-07-25 Pfropfen für Schrotpatronen für Glattlaufschrotgewehre

Publications (1)

Publication Number Publication Date
EP1500901A1 true EP1500901A1 (de) 2005-01-26

Family

ID=34423927

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03425498A Withdrawn EP1500901A1 (de) 2003-07-25 2003-07-25 Pfropfen für Schrotpatronen für Glattlaufschrotgewehre

Country Status (2)

Country Link
EP (1) EP1500901A1 (de)
CA (1) CA2436117A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2430329C2 (ru) * 2008-01-24 2011-09-27 Василий Васильевич Бурдин Дисперсный пыж

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299813A (en) * 1964-12-17 1967-01-24 Remington Arms Co Inc Water sealing shot container for shotshells
FR2057112A5 (de) * 1969-08-05 1971-05-21 Piegay Marcel
US3788224A (en) * 1966-06-24 1974-01-29 Federal Cartridge Corp Nested wad column and method of shot shell loading
US4574701A (en) * 1982-10-12 1986-03-11 Fiocchi Munizioni Spa Wad for cartridges of hunting and shooting arms
GB2172968A (en) * 1985-03-27 1986-10-01 Scient Cartridge Developments Shotgun cartridges

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299813A (en) * 1964-12-17 1967-01-24 Remington Arms Co Inc Water sealing shot container for shotshells
US3788224A (en) * 1966-06-24 1974-01-29 Federal Cartridge Corp Nested wad column and method of shot shell loading
FR2057112A5 (de) * 1969-08-05 1971-05-21 Piegay Marcel
US4574701A (en) * 1982-10-12 1986-03-11 Fiocchi Munizioni Spa Wad for cartridges of hunting and shooting arms
GB2172968A (en) * 1985-03-27 1986-10-01 Scient Cartridge Developments Shotgun cartridges

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2430329C2 (ru) * 2008-01-24 2011-09-27 Василий Васильевич Бурдин Дисперсный пыж

Also Published As

Publication number Publication date
CA2436117A1 (en) 2005-01-25

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