FR2529659A1 - RETRACTABLE BRAKE CANON - Google Patents

Abstract

THIS CANNON INCLUDES A RACK 1, A TUBE-CANON 9 JOINT WITH A BLOCK 8 EQUIPPED WITH A CARTRIDGE CHAMBER 65 SLIDING IN THE RACK 1, A RECOIL BRAKE 6, 7 ABSORBING THE RECOIL ENERGY OF THE CANON 9 AND THE BLOCK 8 AND CAUSING THE REBUILDING OF THE BARREL AND THE BLOCK, A LOCKING MECHANISM OF AN AMMUNITION 43 IN THE CARTRIDGE CHAMBER 65 AND RELAXATION AND PERCUSSION MECHANISMS. THE PERCUSSION MECHANISM 34, 38, 39 IS MOUNTED ON THE BLOCK 8 AND SEPARATES, WHEN THE CANNON TUBE 9 AND THE BLOCK 8 BE RETURNED, FROM THE RELAXATION MECHANISM 20, 28 CARRIED BY THE FRAME 1. IT INCLUDES A DEVICE D '' AUTOMATIC OPENING OF LOCKING RATCHETS FOR THE AMMUNITION 43 WHEN BACKING UP OR RE-BATTERYING CANON TUBE 9 AND BLOCK 8.

Description

1 -

Shoulder barrel with reversing brake.

  The present invention relates to a shoulder-down individual weapon comprising a reversing brake Able to assume multiple roles, it is able to increase the autonomy of

  the infantry, filling a gap in his equipment.

  The design makes it possible to realize a simple weapon of a

  safe operation and easy service.

  cure an important fire support to the infantryman.

  This weapon is very handy because of its low

  his lightness and the good position of his center of gravity, is able to launch in tight fire at

  important initials and accurately projectiles explo-

different types.

  The unusual performance of this weapon can

  to equate it with a real pocket gun.

  The constructive arrangements that reconcile simplicity

  mechanical city, the robustness and the short length

  also to obtain an advantageous proportion of the mass

  lante, in relation to the fixed mass Its long-stroke recoil brake, which absorbs most of the recoil energy, considerably reduces the reaction effect on the shoulder

  of the shooter who can thus support it normally.

  Low operating pressures ensure valuable shooting discretion for the user who can stay melted in

  infantry units during engagements.

  The relative lightness of the ammunition, in comparison with its caliber and the initial speed of the shell, allows the servant to have the many shots he is capable of

carry.

  The characteristics of the weapon allow it to

  His rifled barrel allows him to accurately achieve punctual objectives at unusual distances in tight fire, as shells

explosives for the infantry.

  The effective intervention of the weapon against

  diversified objectives Thus, the weapon can be used-

  2nd during the advance of the infantry to execute fires of opening intended to destroy nests of machine guns, shots to neutralize anti-tank weapons even protected by shields which were posted by the enemy in folds of ground, or, while the infantry is waiting on its positions, instant fire against enemy helicopters flying at low altitude, as well as firing on vehicles carrying enemy troops, such as mountain bikes against these targets, shooting bullets guns

Conventional has no effect.

  No need for special preparation, the weapon has the ability to intervene without delay This speed of implementation, as the reloading facilities and the great maneuverability, contribute to obtain a good performance This type of weapon, which was planned to be distributed to the infantry with a few copies per company, strengthens its firepower and its means of action without reducing its mobility. The shoulder with a reversing brake according to the invention comprises a frame, a barrel-tube integral with a block having a cartridge chamber sliding in the frame and a reversing brake capable of partially absorbing the recoil energy of the tube. -canon and the aforementioned block and cause the re-battery of the barrel-tube and the block According to the invention, the cartridge chamber is open towards the rear so that it is the sleeve of the ammunition which ensures only the closing the cartridge chamber without the need for a cylinder head

  socket is held in position by a locking mechanism

  rusting of the ammunition which is mounted on the aforementioned block secured to the barrel tube. In this way, the mechanism of

  lock can be activated when moving the tube-

  barrel and the aforesaid block, by contact with

Daires du bati.

  The locking mechanism of the ammunition preferably comprises at least one locking pawl pivoted on the aforementioned block and elastically held normally in position

  In practice, it is found that it is preferable

  to provide two locking pawls arranged symmetrically

  are similar to swivel jaws, holding the bushing laterally and aft on two

  sectors, when ammunition has been introduced into the

the weapon.

  This original device replacing the yoke is preferably used in combination with a socket whose bottom thickness is reinforced so as to withstand the thrust forces in the absence of any breech, given

  the weapon operates under low pressure, this reinforces

  the socket is not very

it weighs little.

  The pivoting movement of each of the locking pawls is preferably obtained by means of a first cam integral with each locking pawl and being able to cooperate, during the backward stroke and when the barrel tube and the battery are put back into battery. aforementioned block with a second cam integral with a flap pivotally mounted on the frame and subjected to an elastic return tending to move it towards the

aforesaid block.

  The first and second cams preferably have a parallelogram shape of which two faces are inclined

  to define wedge-shaped ends

  In another embodiment, the shape and arrangement of the cams may be different so that the pivoting of each flap is facilitated by the pivoting of each flap during the recoil as well as by the pivoting of each locking pawl. locking ratchet causing the lberation of the cartridge sleeve to become

  do on the contrary during the retreat.

  The percussion mechanism is pre-aggrementally mounted on the aforementioned block secured to the barrel tube and thus separates from the detent mechanism carried by the frame during the retreat of the barrel.

  barrel-tube and the aforementioned block The dog's percussion mechanism-

  sion is preferably mounted on the aforementioned block so as to come into contact, during the recoil stroke, with a stop integral with the frame which thus causes its rearming When the barrel tube and the aforesaid block are in battery, a movable stop controlled by the trigger mechanism is in contact with an oscillating pawl of the percussion mechanism

  which locks the dog in an armed position.

  An ejector device mounted Plasiquement, for example

  subject to the action of a spring, is further provided for the ejection

the socket.

  Under these conditions, the breechless device of the steerable barrel of the invention which has been designed to lock the bushing, allows the latter to benefit from an automatic ejection while having the merit of allowing further simplification of different mechanical members and to provide a remarkable ease and speed of loading of the munition. The shoulder barrel with recoil brake according to the invention is an individual weapon at a time provided with an automatic ejector sleeve but manual loading The type of ammunition used is encartouchée Its projectile is a large caliber against the lightness of the weapon and the

  relatively high initial speed.

  The present invention therefore makes it possible to produce a manageable, robust individual weapon that is simple to manufacture, easy to use and presents no particular technical difficulty. The attached drawing illustrates schematically and by way of

  non-limiting example of a form of execution of the epoxy barrel

lable according to the present invention.

  Figures 1 to 3 are side views, respectively from above and from the rear; Figure 4 illustrates on a larger scale and in section a portion of the firearm showing the trigger mechanism; Figure 5 illustrates on a larger scale and in section the rear part of the firearm; FIG. 6 is a view from the rear of the weapon, some parts being seen in section; Figure 7 is a partial section along the line X-X of Figure 5; Figure 8 is a plan view, partially in section of the rear portion of the firearm in firing position; Fig 9 is a schematic view of the rear portion of the weapon during the recoil of the barrel; Figure 10 is a schematic view of the rear of the weapon, the barrel returning to battery after the departure of a stroke; Fig 11 is a side view of the rear part of the weapon. The gun shown has a tubular frame 1, open at both ends, having at its front end a muzzle brake 2 This muzzle brake 2 is either machined in

  the frame, be reported on it.

  On the lower part of this frame 1 are fixed a handle 3, a shoulder 4 and a handle 5 enclosing a part

  the trigger mechanism and, incidentally, a folding handle

gripping table 71.

  The upper part of this frame 1 carries the fixed assembly 6

  of a reversing brake whose movable part 7 is fixed rigidly.

  1 to a block 8 enclosing the cartridge chamber screwed onto the rear end of a striped barrel tube 9 slidably mounted inside the tubular frame 1. The fixed assembly 6 of the reversing brake is fitted into two clamps 69 of FIG. frame 1 of the weapon, a front cap 6a and a rear bushing Gb, both screwed on the body 6 of the brake make the latter integral with the frame 1 Thus, the parking brake is removably mounted

on the frame.

  In the firing position, the barrel tube 9 is entirely housed in the frame 1 which effectively protects it against impacts and which simultaneously constitutes a thermal protection for

the user.

  Block 8 has a rear extension 10 enclosing the percussion mechanism which moves with the barrel tube when

recoil after the start of the stroke.

  The handle 5 has on its rear face a safety strike 12 pivoted at 13 on the frame 1 and provided with a spout 14

  cooperating with a part 15 of the trigger mechanism.

  The front edge of the handle supports a trigger 16 rotated on the handle 17 and acting on an arm of a lever 18 V-shaped articulated by its center 19 on the

  The other arm of this lever 18 acts on a rod of trans-

  mission 20 carrying the piece 15. A manual lock is provided constituted by a milled semicircular pin 21 pivoted in the housing of the handle

  and actuated by a safety lever 22 When this safety

  is locked, as shown in fig 4, any rotation

lever 18 is prohibited.

  So that the transmission rod 20 can slide back under the action of a rotation of the lever 18, caused by the trigger 16, it is necessary that the safety 21 is removed and that the keeper 12 itself; t pressed, which leads to the erasing of the spout 14 which is part of it, and thus releases the

  piece 15 secured to the transmission rod.

  The handle 5, trigger 16, the lever 18, and the striker 12 constitute a removably mounted assembly and

  retained on the frame 1 by means of two semi-circular countersunk

  23, whose heads have screw slots

  accessible from outside the building 1.

  The shoulder rest 4 is also removably attached by means of two semi-circular milled axes with split heads.

24, 25 on the frame 1.

  The transmission rod 20 slides in bearings 26, 27 integral with the frame 1 and its rear end, emerging from the frame 1 is constituted by a stop 28 This rod 20 and this stop 28 are subjected to an elastic return action, here a spring 29 stretched between the stop 28 and the frame

  1, intended to maintain this rod 20 against the lever 18.

  This stop has a transverse bore 28 through.

  A cover 30 fixed to the frame 1 by screws 31, 32 cache

the stem.

  A damper 11, fixed on the frame 1, serves as support and

  protection, when the weapon is placed vertically on the ground.

  The percussion mechanism comprises an oscillating pawl 34 pivoted on the extension 10 of the block 8 and subjected to the action of a return spring 35 In the armed position, illustrated in FIG.

  5, the pawl 34 is held in abutment against a gudgeon

  lug 36 secured to the extension 10 and its end 37, having a spout, is engaged under the end 38 of the dog 39, pivoted on the extension 10 at 40, and maintains it in this armed position against the action of at least one spring 41 The percussion head 39 of the dog 39 comes, pivoting under the action of the spring 41, when its end 38 is, released from the pawl 37, directly hit the primer 42 of a munition 43 introduced into the cartridge chamber 65 whose rear end of larger diameter receives the rear rim of a socket 43 has a munition A ejector 50 subjected to the action of an ejection spring 51 comprises an ejection finger 52 housed in a countersink of the rear face of the block 8 which cooperates with a part of the periphery of the sleeve 43 a This ejector 50 is provided with a manual ejection ring 53 The stroke of the ejector 50 is limited by a stop 60 fixed in the block 8 and whose end is engaged

  in a longitudinal groove 61 of the ejector 50 (FIG. 9).

  The ammunition housed in the cartridge chamber of the block 8 is normally held in the starting position of the blow by two locking pawls 55 pivoted on the block 8, the rear portion of which includes nozzles 56 coming into contact with the

  the rear edge of the socket 43 a Each locking pawl

  lage 55 is articulated on two sockets 54 driven into the block 8 and is subjected to the action of a spring plunger 57 tending to keep it in the locked position The upper front end 58 of the locking pawls 55 constitutes an unlocking member Manual Two stops 67 limit the stroke of the locking pawls 55 before the loading of

the ammunition.

  The weapon is equipped with an automatic opening device

  latching pawls 55, which opening takes place during the battery return of the barrel after the start of the stroke This automatic opening device comprises a cam

  59, integral with the lower arm of each latch pawl

  55, having the shape of a parallelogram During the retreat of the tubecanon 9 and the block 8, each cam 59 cooperates

  with a corresponding cam 62, also of parallel shape

  the epiped, carried by flaps 63 pivoting about axes 64, parallel to the axis of the barrel tube 9, mounted on the frame 1 and subjected to the action of a spring 66 tending to maintain

  in the vertical position shown in fig. 6 and 8.

  Locking member 55 further comprises a lower front end 45 cooperating with a latch 46 subjected to the action of a return spring 47. These latches 46 slide in transverse passages of the block 8 and are coaxial with the passage

28 has stop 28.

  According to a variant not shown, the pawls can be integral with each other, for example by means of a gear, so that the displacement of one drives

  simultaneously the same displacement of the other.

  The outer diameter of these latches 46 is slightly

  less than the inside diameter of the passage 28 a.

  In the locked position (Fig. 8) lock latches

  55, the locks 46 are located outside the passage 28a of the

  On the other hand, as soon as one of the lock latches

  55 is displaced angularly in the direction of the arrow f, the corresponding latch 46 enters the passage 28a of the

  stop 28 preventing any movement of the transmission rod

  20 and stop 28, and thereby preventing the operation

relaxation.

  The operation of the shoulder cannula described is as follows The weapon being in the state illustrated in FIGS. 1, 2, 3, 4, 6 and 8 and assuming that a munition 43 is introduced into

  the barrel-tube, that is to say that the sleeve 43 of this muni-

  If the projectile is located in the cartridge chamber 65 and its projectile extends into the barrel tube 9, the following operations are performed: a) the shooter releases the security 21 by rotating the gun

safety lever 22 of 1800.

  b) The shooter shoulder the weapon, aim the goal using the viewfinder 70, take the handle in hand, which moves the strike

  12 and releases the transmission rod 20.

  (c) The shooter presses the trigger 16 causing the

  rearward movement of the transmission rod weapon

  20 and its stop 28 against the action of the spring 29 In doing so, the pawl 34 is moved angularly until its end 37 releases the dog 39. d) The dog, under the action of its spring 41 rotates and comes to strike by his head 39 to the primer 42 of the socket 43 a

causing the start of the stroke.

  e) The assembly constituted by the block 8 and the barrel-tube 9

  recoils under the effect of the start of the blow, the barrel-tube

  in the frame 1 The parking brake 6, 7 absorbs a part

recoil energy.

  f) During the reversal stroke of the barrel tube 9 and the block 8, the cam 59 of the locking pawls 55, cooperates with the cam 62 of the flaps 63, moving these flaps 63 outwards against the action of their spring. respective return 66 (Fig. 11) During this back stroke also, the dog 39 is automatically reset by the fact that its end 38 comes into contact with the fixed stop 68 secured to the frame 1 by the v Is-33, which the returns to his armed position and keeps him there

  again by the oscillating pawl 34 (FIG. 5).

  g) At the end of the backing stroke, the cams 59 escape the cams 62 of the shutters 63 and these return to their position.

  vertical under the action of their return spring 66.

  h) The recoil brake 67, equipped with an elastic action of return to battery, causes the displacement of the barrel-tube 9 and

  block 8 in reverse for its return to battery.

  i) During the re-charging stroke (FIG. 10), the cams 59 of the locking pawls 55 cooperate with the three cams 62 of the flaps 63 causing the latches 55 to pivot against the action of the push-buttons 57, which

releases the socket 43 a.

  j) Once released, the sleeve 43a is ejected by

  the ejector 50 under the action of its spring 51.

  k) The shooter having released the trigger 16 and the striker 12, the transmission rod 20 is brought back and locked in its initial position illustrated in FIG. 4 under the action of FIG.

return spring 29.

  1) At the end of the re-charging stroke, the barrel tube 9 and the block 8 are again in the advanced position, the oscillating pawl 34 comes into contact with the stop 28 of the transmission rod, but is not moved by it Locking pawls 55 return to their locking position

under the action of the pushers 57.

  m) The shooter or his servant can then manually open the pawls 55 and introduce a new ammunition in the cartridge chamber 65, then release the levers 58 of the locking pawls 55, which automatically causes

  locking the ammunition in the cartridge chamber 65.

  The described weapon is of simple and robust design and

easy handling.

  The reversing brake can be of conventional type, for example

  of the oleopneumatic type with a hollow stem. It comprises a device

  tif of energy recovery allowing automatic return

in battery.

  Alternatively, the locking pawls could be connected to each other by a synchronization mechanism to ensure a simultaneous and symmetrical movement of the two

ratchets relative to the frame.

  In another variant, the shape of the cams 59 and 62 may be different, so that the opening of the two locking pawls is effected during the reversing stroke instead of

  take place during the re-battery race.

Claims (9)

  1 shoulder barrel with a reversing brake comprising a frame (1), a barrel tube (9) integral with a block (8) having a cartridge chamber (65) sliding in the frame (1), a reversing brake ( 6, 7) capable of partially absorbing the recoil energy of the barrel tube (9) and the block (8) and causing the barrel tube (9) and the block (8) to be re-energized, characterized by the fact that the cartridge chamber (65) is open towards the rear, the sleeve (43a) of the ammunition (43) ensuring the closure of said chamber alone, a locking mechanism of the ammunition being mounted on the block ( 8c) so as to be actuated during the movement of the barrel-tube (9) and the block (8), by contact with means integral with the frame (1) o 2 steerable barrel according to claim 1, characterized in that the locking mechanism of the ammunition comprises at least one locking pawl (55) pivoted on the block (8) and elastically held normally in po locked position. 3 steerable barrel according to claim 2, characterized in that the locking mechanism of the ammunition comprises two locking pawls (55) pivoted on the block (8) and held elastically normally in the locked position.   4 steerable barrel according to claims 2 or 3,   characterized in that each locking pawl (55) has a first cam (59) which can cooperate, when   the reversing stroke and when putting the tube back into   barrel (9) and the block (8), with a second cam (62) integral with a flap (63) pivotally mounted on the frame (1) and subjected to an elastic return tending to move it towards the block (8). ). Shoulder barrel according to claim 4, characterized   in that the first and second cams (59, 62) have   a parallelogram form, two faces of which are inclined   "born to define wedge ends to facilitate   the pivoting of each flap (63) during the recoil and pivots it   each locking pawl (55) on delivery in battery.   6 A shoulder barrel according to any one of the claims   characterized in that the percussion mechanism is mounted on the block (8) and separates from the trigger mechanism carried by the frame (1) during the recoil of the barrel tube (9) and the block (8) . 7 steerable barrel according to claim 6, characterized in that the hammer (39) of the percussion mechanism comes into contact, during the back stroke, with a stop (68)   secured to the frame (1), thus causing its rearming.   Pusher barrel according to claim 6 or 7,   characterized in that when the barrel tube (9) and the block (8) are in battery, a movable stop (28) controlled by   the detent mechanism is in contact with an oscillating ratchet   lant (34) of the percussion mechanism, locking the dog (39) in the armed position.   9 shoulder barrel according to any one of the claims   tions, characterized by the fact that it includes a   ejector (50) subjected to the action of a spring (51).   Shoulder barrel according to any one of the claims   2 to 9, characterized in that the block (8) is screwed onto the rear end of the barrel (9); in that this block (8) carries the ejection mechanism (50) of the bushing (43), the percussion mechanism (39), the articulated pawls (55) and their automatic opening device and by the fact that this block (8) is attached to the   rear part of a moving rod of the reversing brake (6, 7).   11 Shoulder barrel according to any one of the claims   2 to 10, characterized in that each locking pawl (55) comprises an upper front lever (58) constituting a manual opening member of the locking mechanism. locking the ammunition (43).   The steerable barrel according to claim 11, characterized   in that each locking pawl (55) further comprises a lower front lever (45) cooperating with a spring plunger (46) sliding in the block (8).   The shoulder barrel according to claim 12, characterized   due to the fact that the pushers (46) are coaxial with a transverse passage (28 a) of the movable stop (28) of the mechanism   of relaxation and a diameter smaller than this passage.   14 A shoulder barrel according to any one of the claims   previous arrangements, characterized in that the barrel tube (9) is completely housed inside the frame (1).   Shoulder barrel according to any one of the claims   previous arrangements, characterized by the fact that a   mouth (2) is mounted or factory on the front part of the frame (1).