FR2660426A1 - DEVICE FOR ATTACHING SILENCERS OR OTHER ACCESSORIES TO A CANNON GUN. - Google Patents

Abstract

The present invention provides a fastening device suitable for interlocking on an elongate member (1) having a front and rear engaging face (18, 2), said fastening device comprising a hollow adapter (5) for engagement. mutual with the rear face (2) of said elongated member, and a locking body (11) adapted to interlock with said adapter and engage the front engaging face (17) to lock it in the set condition. The adapter (5) is preferably of a generally cylindrical configuration and has a cutout portion (7) in its periphery, said cutout portion being at least one clearance fit for the elongate member (1) and being of length less than the length of the elongated member and adapter. The arrangement allows a rocket launcher or silencer, for example, to be manually attached to the flash hider of a military or sport weapon.

Description

DEVICE FOR ATTACHING SILENCERS OR OTHER ACCESSORIES

ON A RIFLE GUN

  The present invention relates to

  tion and in particular, but not exclusively,

  fixing devices for attaching

  me silent mouths of military weapons and sports.

  It is known in the mechanical art to use an adapta-

  for cooperation with an elongated element for

  fixing device, said adapter being provided with a slot

  lined with adaptation dimensions with play on the

  elongated body, and a locking body adapted to

  The adapters tend to detach from the assembly when they are not locked tight In addition, if they have an internal thread,

  the substantial locking pressure tends to de-

  stick the free ends of the adapter, reducing

  thus the locking voltage and causing distortion

  tions. The problem in fixing silencers and other military or sports devices to the mouths of rifles

  manufacturers from different countries use different

  For example, the thread at the end of the mouth of an American-made weapon for the fixation of a flame-shield does not have the same configuration as that of a weapon manufactured in Europe, which also a configuration different from that of a weapon made in the United Kingdom In addition, the flame arresters do not have the same length, although they most often

same outside diameter.

  If it is desired to remove a flamethrower from a weapon, it is necessary to apply a key or similar tool

  to unlock the flame-shield from the mouth of that-

  ci Even when this is done, it is usually not possible to screw a muffler or similar device

  unless that silencer or similar device is spe-

  This gun is ideally suited to this weapon, because if the diameter of the muzzle can be the same for most weapons, the threading differs. This is why the present applicant has

  sought to propose a compact and

  simple bust adapted to lock an elongated member such as a flammel when in place on the muzzle of a barrel with a muffler or similar device. It is desirable that this fastener include elements which can not be disassembled easily, and which

  can be applied manually without using tools.

  According to the present invention is therefore proposed a

  fastening device adapted for mutual locking on a

  elongate element having a front and rear engagement face

  said fixing device comprising an adaptation

  hollow shaft for mutual engagement with the rear face of the

  said elongate member, and a locking body adapted to

  fit with said adapter and engage the face of

  before and lock it in the fixed condition,

  characterized in that the adapter is of general configuration

  generally cylindrical and comprises a slot constituted by a portion cut in its cylindrical periphery, said cut portion fitting with play on the elongated element

  and being of a length less than the length of the

  Thus, the cut portion of the present invention may extend only a portion of the length of the adapter. Preferably, the adapter is shorter than the elongate member and the attachment device. and the elongated element to which he owes

to be fixed have a common axis.

  The elongate body is preferably a flame cap

for rifle.

  In the preferred form of the present invention, the slot is of a configuration, relative to the length of the adapter, such that the elongate body can pass freely at an angle in the slot and an end face of

the bore of the adapter.

  Screw threads are advantageously

  on most of the inner side of the adapter and over a large part of the outer surface of the body

  in such a way that long elongated bodies

  Different sizes can be received in the fixing device. It is very preferable for the internal bore of the locking body to engage with

the elongated element.

  The locking body can carry a flange and a tapped hollow portion for mutual assembly with

a silencer or other accessory.

  The present invention will now be described, uniquely

  As an example, with reference to the appended drawing.

  FIG. 1 is an exploded view of a fixing device

  according to the present invention for use with a flame protector of a sports weapon Colt AR 15, the body of

  locking being shown in vertical section.

  Figure 2 is a perspective view of the adaptation of

  tor. Figure 3 is an elevational view partially in

cutting of the mounted device.

  Referring to the attached drawing, there is shown a

  flame arrestor, usually indicated in 1, an adapter

  usually 5, and a silencer extension 11

  comprising a locking body 12.

  The flame cap 1 is intended for a Colt AR 15 sport weapon and is adapted to be engaged by means of threads cooperating on its mouth by means of a threaded bore.

  extending axially in the rear face 2 of the cover

flame 1.

  Flamebreaker 1 in this example presents a dia-

  outside meter of about 21.5 mm and is equipped with

  generally cylindrical riphère of a plurality of slots

  ventilation 3 according to common practice in the art.

  In this example, the flame shield has a length of 44 mm;

  other flame arresters have different lengths.

  The adapter 5 is of a generally cylindrical configuration, its outer surface 6 being knurled for ease of use. The adapter 5 is provided with a face

  commitment 8 which is of a substantially

  U-shaped, whose edges are adapted to engage with

the face 2 of the flamethrower.

  The engagement face 8 is chamfered towards the slot or cut portion 7 which is dimensioned with clearance for the

  flamebreaker 1, that is to say, is in this specific example

  The cut portion 7 terminates at its front end in an arcuate section which has approximately the same diameter of curvature as the

  Flamebreaker 1 Adapter 5 presents in its

  a threaded portion 9 to form a cy-

lindrique to screw.

  The silencer extension It is formed by a locking body 12 and an external threaded flange 14, to which a silencer S can be fixed so as to

  lock against the front edge of the flange 15.

  The locking body 12 is provided with an internal bore

  dull 16, said internal bore 16 having a diameter which is dimensioned with clearance for the outer diameter of the

  flame arrestor 1, for example a diameter of 22 mm.

  the bore 16 is less than 44 mm so that the front end 18 of the flame arrestor 1 abuts against the internal locking flange 17 located at

  the far end of the bore 16 of the lock body

  lage 12 while the faces 2 of the flamer 1 and 8 of

  the adapter, engage each other in a stop

  rusting. In use, when it is desired to fix the locking body 12 to the flame shield 1, the adapter and the locking body 12 are disengaged from one another. The cut portion 7 is slid onto the cover plate. flame 1, the

  1 being attached to the mouth of the weapon.

  In this case, the adapter is placed in the same axis as the cacheflame so that the flame cap 1 passes through the arcuate end of the cutout portion 7 and protrudes temporarily from the central bore of the adapter 5. that the front engaging face 8 comes abutting by sliding against the rear face 2 of the flame arrestor 1 At that moment, the hollow bore 16 is placed on the flame shield 1 and slid backwards relative thereto until the external thread 13 on the locking body 12 engages with the internal thread 9 of

  the adapter 5 The adapter 5 is then turned relative-

  to the locking body 12 so as to screw the locking body into the adapter 5.

  relatively large diameter of the adapter 5 and the collar

  11, it is possible to exert considerable pressure

  Only at a certain point during the rotation of the adapter relative to the locking body, the internal locking flange 17 locks against the front end of the flame cap 1

  at the same time as the surface 8 of the adapter 5 becomes

  rust against the rear face 2 of the flame arrestor Maximum pressure is exerted manually at that moment

  to lock the lock body 12 on the cover

  flame 1 and thus securely lock the muffler

  attached to the flange 14 with the mouth of the firearm

  which flame shield 1 is attached.

  It appears that flame arresters 1 of different lengths can be easily received by this means, also

  flame arrestors 1 of 50 mm or even 60 mm can be

  With small adaptations, the adapter itself may be small in size provided that the cut portion

  continues to operate appropriately.

  By using the fixing device according to the pre-

  In this invention, single-sized silencers can be successfully adapted to a range of military and

  of sports, and fixed only by hand.

  The present invention therefore relates to a device for

  particularly, but not exclusively, for use in

  with military or sporting weapons, and

  devices such as mufflers and rocket launchers

  carrying such a fixing device.

Claims (7)

CLASS I CAT IONS   A fastening device adapted for mutual locking on an elongate member having a front and rear engagement face, said fastening device comprising:   a hollow adapter for mutual engagement with the   said elongate member, and a locking body adapted to engage said adapter and engage the   front engagement face and lock it in the   fixed; characterized in that the adapter (5) has a cut-off portion (7) in its periphery, said cut-out portion or slot providing a clearance passage for the elongate member (1) and being shorter in length than the length of the   the elongated element or adapter.   Fastening device according to claim 1,   in that the adapter is of a generic configuration. cylindrical.   3 fixing device according to claim 1 or 2 characterized in that the adapter is shorter than   the elongate element and coaxial with it.   4 Fixing device according to any one of the   preceding claims characterized in that the slot (7) is of a configuration, relative to the length of   the adapter, such as the elongate body (1) can engage   freely at an angle in the slot and face of gagement (8) of the adapter.   Fastening device according to any one of the preceding claims, characterized in that a screw thread (9, 16) is formed respectively on the greater part of   the inner face of the adapter (5), and / or on a large scale   part of the outer face of the locking body (11).   6 Fixing device according to any one of the   preceding claims characterized in that the bore   internal part (16) of the locking body (11) is adapted to   turn with play the elongated element (1).   7 Fastening device according to any one of the preceding claims characterized in that the locking body (11) carries a flange (15) and a threaded portion (14) for assembly with a silencer or other weapon device.   8 Set of a weapon, an elongated element and a disc   fixing device according to any one of the claims previous statements.