EP0340829A2 - Recoil strengthening device, in particular for rifles - Google Patents

Recoil strengthening device, in particular for rifles Download PDF

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Publication number
EP0340829A2
EP0340829A2 EP89200988A EP89200988A EP0340829A2 EP 0340829 A2 EP0340829 A2 EP 0340829A2 EP 89200988 A EP89200988 A EP 89200988A EP 89200988 A EP89200988 A EP 89200988A EP 0340829 A2 EP0340829 A2 EP 0340829A2
Authority
EP
European Patent Office
Prior art keywords
cylindrical body
recoil
bores
strengthening device
hollow cylindrical
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Withdrawn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
EP89200988A
Other languages
German (de)
French (fr)
Other versions
EP0340829A3 (en
Inventor
Alessandro Marzocco
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.)
Societa Costruzioni Industriali Milano SpA SOCIMI
Original Assignee
Societa Costruzioni Industriali Milano SpA SOCIMI
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 Societa Costruzioni Industriali Milano SpA SOCIMI filed Critical Societa Costruzioni Industriali Milano SpA SOCIMI
Publication of EP0340829A2 publication Critical patent/EP0340829A2/en
Publication of EP0340829A3 publication Critical patent/EP0340829A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
    • F41A21/26—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means specially adapted for recoil reinforcement, e.g. for training purposes

Definitions

  • the present invention relates to a recoil strengthening device, in particular for rifles.
  • both the normal war cartridges and short-range cartridges with plastic projectiles and reduced launch charge, or dummy cartridges, without projectile, and with furthermore reduced launch cartridge, are used.
  • the rifles in order to shoot war cartridges, and therefore the backward movement of their obturator is proportionated to their high launch energy.
  • the generated energies are insufficient in order to obtain the normal recoil of the obturator, and in order to be able to correctly perform the shooting sequence, on the weapon, and precisely on the muzzle of the barrel, a recoil strengthening device has to be installed.
  • the strengthening of the recoil is obtained by increasing the pressure of the gas inside the barrel, by using a choke on the discharge of the same gases, in correspondence of the muzzle.
  • recoil strengthening devices known from the prior art are constituted by a hollow cylindrical body installed on the muzzle of the barrel; on said hollow cylindrical body, at its free end, a disk provided with a bore is installed. On said recoil strengthening device, different types of diskes provided with bores of different size can be mounted.
  • a purpose according to the present invention is of giving the user the possibility of using cartridges with different types of projectiles, as well as dummy cartridges, without him being obliged to replace any elements in case an accidental damaging occurs.
  • a further purpose according to the present invention is of enhancing the safety of the recoil strengthening devices known from the prior art.
  • a recoil strengthening device which is essentially constituted by a first hollow cylindrical body, which can be connected with the barrel of a fire-arm, with atop said first hollow cylindrical body a second hollow cylindrical body being connected, with said first body and said second body having their generatrices positioned perpendicular to each other, characterized in that inside the interior of said second cylindrical body, and coaxial with it a further hollow cylindrical body having a partial side surface is provided, with said further body being provided, on said partial side surface, with a plurality of through-bores suitable for being positioned in correspondence of a further through-bore constituting an outlet bore provided through the side wall of said second hollow cylindrical body and coaxial with said barrel, by means of a rotatably-actuatable knob.
  • said plurality of bores is constituted by four bores, pairs of which have a same diameter.
  • the recoil strengthening device 10 is constituted by a first hollow cylindrical body 12, coupled with the barrel 11 by means of a screw-thread 13. Said first cylindrical body 12 is surmounted by a second hollow cylindrical body 14 so positioned that the generatrices of this latter result to be perpendicular to those of said first body 12.
  • a further hollow cylindrical body 15 is provided, which has a partial side surface 25 provided with two pairs of bores indicated by the reference numerals 16 (the first pair of bores) and 17 (the second pair of bores).
  • the body 15 is furthermore provided with a pivot 18 protruding from its single base surface and connected with a knob 19, which is suitable for rotatably actuating it in order to move the bores 16 and 17 to come into correspondence of an outlet bore 20 provided on the side surface of the second cylindrical body 14, with the centre of said bore 20 lying on the longitudinal axis of the barrel 11.
  • the partial side surface 25 defines an opening which makes it possible said barrel 11 to communicate, by a rectilinear path, with the pair of bores 16 and 17 and with the outlet bore 20.
  • the bores 16 and 17 have different diameters; the smaller-diameter bores (16) are used in case dummy cartriges are fired, and the larger-diameter bores (17) are used in case, on the contrary, short-range cartridges are fired; and through the opening defined by the partial side surface 25, also normal war ammunitions can be used.
  • the recoil strengthening device makes it possible the position of the bores to be selected as a function of the cartridges used, directly on the training site, and without the user being obliged to replace any pieces, and still with the same device being installed on the muzzle of the barrel. It also makes it possible the user to operate under fully safe conditions, because even if the hollow cylindrical body 15 is damaged during the firing, owing to the accidental firing of a war cartrige while the bores provided for the dummy cartridges or the short-range cartridges are set in operating position, it will always be inside the interior of the cylindrical body 14, thus preventing splinters from being dangerously projected towards the outside.

Abstract

Recoil strengthening device (10) constituted by a pair of cylindical elements (12, 14) connected with each other, wherein one of them (14) is equipped with a revolving element (15) freely positionable according to the type of ammunition used, with said device being provided with a series of bores (16, 17) which can be placed, as desired, in correspondence of the outlet bore (20) of the cylindical element which contains it.

Description

  • The present invention relates to a recoil strengthening device, in particular for rifles.
  • During the training of troops, both the normal war cartridges and short-range cartridges with plastic projectiles and reduced launch charge, or dummy cartridges, without projectile, and with furthermore reduced launch cartridge, are used.
  • In this regard, the rifles in order to shoot war cartridges, and therefore the backward movement of their obturator is proportionated to their high launch energy. Now, in case short-range cartriges or dummy cartridges are used, it happens that the generated energies are insufficient in order to obtain the normal recoil of the obturator, and in order to be able to correctly perform the shooting sequence, on the weapon, and precisely on the muzzle of the barrel, a recoil strengthening device has to be installed.
  • The strengthening of the recoil is obtained by increasing the pressure of the gas inside the barrel, by using a choke on the discharge of the same gases, in correspondence of the muzzle.
  • Some types of recoil strengthening devices known from the prior art are constituted by a hollow cylindrical body installed on the muzzle of the barrel; on said hollow cylindrical body, at its free end, a disk provided with a bore is installed. On said recoil strengthening device, different types of diskes provided with bores of different size can be mounted.
  • In case a cartridge is fired, the projectile of which has a larger diameter than the bore of the disk, said disk will be damaged, with a possible dangerous projection of splinters taking place.
  • A purpose according to the present invention is of giving the user the possibility of using cartridges with different types of projectiles, as well as dummy cartridges, without him being obliged to replace any elements in case an accidental damaging occurs.
  • A further purpose according to the present invention is of enhancing the safety of the recoil strengthening devices known from the prior art.
  • In order to achieve the above purposes, according to the present invention a recoil strengthening device is provided, which is essentially constituted by a first hollow cylindrical body, which can be connected with the barrel of a fire-arm, with atop said first hollow cylindrical body a second hollow cylindrical body being connected, with said first body and said second body having their generatrices positioned perpendicular to each other, characterized in that inside the interior of said second cylindrical body, and coaxial with it a further hollow cylindrical body having a partial side surface is provided, with said further body being provided, on said partial side surface, with a plurality of through-bores suitable for being positioned in correspondence of a further through-bore constituting an outlet bore provided through the side wall of said second hollow cylindrical body and coaxial with said barrel, by means of a rotatably-actuatable knob.
  • Advantageously according to the present invention said plurality of bores is constituted by four bores, pairs of which have a same diameter.
  • In order to better understand the characteristics of the present invention and further advantages thereof, the present invention is now disclosed by referring to the figures of the hereto attached drawing, in which:
    • Figure 1 shows a sectional view of a damper according to the present invention, installed on the barrel of a fire-arm, and
    • Figure 2 shows a sectional view according to path II-II of Figure 1.
  • Referring to the figures, by the reference numeral 10 a recoil strengthening device according to the present invention is generally indicated. Said device is mounted on the barrel 11 of a fire-arm, not shown in the figure.
  • The recoil strengthening device 10 is constituted by a first hollow cylindrical body 12, coupled with the barrel 11 by means of a screw-thread 13. Said first cylindrical body 12 is surmounted by a second hollow cylindrical body 14 so positioned that the generatrices of this latter result to be perpendicular to those of said first body 12.
  • Inside the second cylindrical body 14 and coaxial with it a further hollow cylindrical body 15 is provided, which has a partial side surface 25 provided with two pairs of bores indicated by the reference numerals 16 (the first pair of bores) and 17 (the second pair of bores).
  • The body 15 is furthermore provided with a pivot 18 protruding from its single base surface and connected with a knob 19, which is suitable for rotatably actuating it in order to move the bores 16 and 17 to come into correspondence of an outlet bore 20 provided on the side surface of the second cylindrical body 14, with the centre of said bore 20 lying on the longitudinal axis of the barrel 11.
  • The partial side surface 25 defines an opening which makes it possible said barrel 11 to communicate, by a rectilinear path, with the pair of bores 16 and 17 and with the outlet bore 20.
  • The bores 16 and 17 have different diameters; the smaller-diameter bores (16) are used in case dummy cartriges are fired, and the larger-diameter bores (17) are used in case, on the contrary, short-range cartridges are fired; and through the opening defined by the partial side surface 25, also normal war ammunitions can be used.
  • Thus, the recoil strengthening device according to the present invention makes it possible the position of the bores to be selected as a function of the cartridges used, directly on the training site, and without the user being obliged to replace any pieces, and still with the same device being installed on the muzzle of the barrel. It also makes it possible the user to operate under fully safe conditions, because even if the hollow cylindrical body 15 is damaged during the firing, owing to the accidental firing of a war cartrige while the bores provided for the dummy cartridges or the short-range cartridges are set in operating position, it will always be inside the interior of the cylindrical body 14, thus preventing splinters from being dangerously projected towards the outside.
  • Obviously, even in case one of the bores belonging to either of said bore pairs is damaged, the other bore of said bore pair can be used, as an emergency bore, without the user being obliged to replace the whole device, by simply actuating the knob 19, which can rotate the cylindrical body 15.
  • The present invention has been disclosed for illustrative and non-limitative purposes, and it should be understood that modifications and changes may be supplied by those skileed in the art, without anyway departing from the scope of the present patent-right.

Claims (5)

1. Recoil strengthening device essentially constituted by a first hollow cylindrical body, which can be connected with the barrel of a fire-arm, with atop said first hollow cylindrical body a second hollow cylindrical body being connected, with said first body and said second body having their generatrices positioned perpendicular to each other, characterized in that inside the interior of said second cylindrical body, and coaxial with it a further hollow cylindrical body having a partial side surface is provided, with said further body being provided, on said partial side surface, with a plurality of through-bores suitable for being positioned in correspondence of a further through-bore constituting an outlet bore provided through the side wall of said second hollow cylindrical body and coaxial with said barrel, by means of a rotatably-actuatable knob.
2. Recoil strengthening device according to claim 1, characterized in that said plurality of bores is constituted by four bores, subdivided into pairs of same-­diameter bores.
3. Recoil strengthening device according to claim 1, characterized in that said partial side surface of said further cylindrical body defines such an opening as to make it possible said barrel to communicate, by a rectilinear path, with said outlet through-bore.
4. Recoil strengthening device according to claim 3, characterized in that said opening furthemore makes it possible said barrel to communicate, by a rectilinear path, with said outlet through-bore.
5. Recoil strengthening device according to one or more of the preceding claims, substantially as herein disclosed and illustrated.
EP89200988A 1988-04-29 1989-04-18 Recoil strengthening device, in particular for rifles Withdrawn EP0340829A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2038288 1988-04-29
IT20382/88A IT1217240B (en) 1988-04-29 1988-04-29 RECOIL STRENGTHENING DEVICE, IN PARTICULAR FOR RIFLES

Publications (2)

Publication Number Publication Date
EP0340829A2 true EP0340829A2 (en) 1989-11-08
EP0340829A3 EP0340829A3 (en) 1990-08-01

Family

ID=11166225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200988A Withdrawn EP0340829A3 (en) 1988-04-29 1989-04-18 Recoil strengthening device, in particular for rifles

Country Status (2)

Country Link
EP (1) EP0340829A3 (en)
IT (1) IT1217240B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5983772A (en) * 1997-08-28 1999-11-16 Reynolds; George L. Subcaliber device/blank firing adaptor for blowback or recoil operated weapons

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330210A (en) * 1938-11-22 1943-09-28 John C Garand Blank ammunition firing attachment for gas operated guns
US3137204A (en) * 1963-05-14 1964-06-16 Earle M Harvey Adjustable blank firing attachment for automatic firearms

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2330210A (en) * 1938-11-22 1943-09-28 John C Garand Blank ammunition firing attachment for gas operated guns
US3137204A (en) * 1963-05-14 1964-06-16 Earle M Harvey Adjustable blank firing attachment for automatic firearms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5983772A (en) * 1997-08-28 1999-11-16 Reynolds; George L. Subcaliber device/blank firing adaptor for blowback or recoil operated weapons
US6202533B1 (en) 1997-08-28 2001-03-20 Armalite, Inc. Subcaliber device/blank firing adaptor for blowback operated or recoil operated weapons

Also Published As

Publication number Publication date
IT1217240B (en) 1990-03-14
EP0340829A3 (en) 1990-08-01
IT8820382A0 (en) 1988-04-29

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