FR2547042A1 - DOUBLE AMMUNITION POWER SUPPLY FOR AUTOMATIC WEAPONS - Google Patents

Abstract

THE OBJECT OF THE INVENTION IS A DUAL FEEDING DEVICE FOR AUTOMATIC WEAPONS. THE DEVICE ACCORDING TO THE INVENTION INCLUDES TWO TILTING POWER SUPPLY BOXES 1, 2 EACH POSSING A SUPPLY STAR LINE 8, 8 AND OF WHICH EACH BOX IS SUITABLE, BY ITS TILT TO BE COUPLED WITH THE POSITIONING DEVICE. WRAPPING ITS SUPPLY STAR LINE ON A REDUCED MOVEMENT TAKE-OFF, THE COUPLING OF THE FIRST BOX IS ACCOMPANIED BY THE SIMULTANEOUS DISCOUPEMENT OF THE SECOND POWER SUPPLY BOX OF THE STARTING DEVICE BY DECREASING ITS STAR LINE SUPPLY OF THE CORRESPONDING MOVEMENT TAKE-OFF, AND THE TILTING OF THE UNITS DRIVING THE CHANGE OF DIRECTION OF ROTATION OF THE LINE 6 OF CENTRAL STARS 7 FROM POSTAL. APPLICATION TO MEDIUM CALIBER WEAPONS.

Description

DOUBLE AMMUNITION SUPPLY FOR WEAPONS 2547042 2547042

  The technical field of the present invention is that of automatic firearms and more specifically weapons that can use at the request of the operator two different types of ammunition, for example

  piercing ammunition and explosive ordnance.

  We already know the patent FR 1 224 730 which describes a weapon with two suppliers parallel to the axis of the weapon, which comprises at the level of the outfitters, an extraction station where the ammunition is extracted from its link by a longitudinal displacement caused by a pusher belonging to the weapon breech mechanism and, in front of this extraction station, a dispensing station comprising a central insertion location intended to receive the first cartridge to be introduced into the barrel of the barrel. weapon and two symmetrical waiting positions, each of these waiting locations corresponding to one of the rotor of the outfitter and intended to receive

  a cartridge of the corresponding band from the aforesaid extraction station.

  This device has a good delivery accuracy of the ammunition but has the disadvantage of increasing the length of the weapon.

  Also known is US Patent 3,662,646 where the ammunition taken from a line of supply stars is brought into the axis 20 of the cylinder head by a movable drawer transversely to the weapon.

  The disadvantage of these two devices is to force to fire, when a choice of ammunition has been made, the last ammunition of the band of cartridges previously selected, which can be detrimental

to the accuracy of the shot.

  Patent FR 1 537 614 discloses a weapon comprising two tilting feeding devices so that one is engaged when

  the other is out of reach of the axis of displacement of the breech.

  The disadvantage of this device is to have a drive of the loader with running knocks, resulting in the risk of breakage or breakage of the link, involving the interruption

shooting.

  The present invention aims at producing a device of the same type as that of the last patent cited for drawing the first

  ammunition of the selected magazine.

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  Another object of the invention is to provide a compact device easy to use, to introduce, at the beginning of use, the bandescharger without any disassembly, which is not the case of the weapon

  described in patent FR 1 537 614 cited above.

  An object of the invention is also to provide a kinematics of the weapon adapted to the automatic use of a dual power supply without other manual intervention than that of the choice of the type of ammunition to be used. Another object of the invention is to provide a feed device which can be used at high firing rates and which can be adapted to a large number of types of weapons, such as automatic external motor weapons, as will be described. further or with very

  slight modifications to the scope of the art, to automatic weapons with inertial cylinder or borrowing gas.

  Similarly, without departing from the scope of the invention, the dou-ble feed device described later in connection with a weapon recoil of the cylinder head can be adapted to a recoil gun tube The invention therefore relates to a dual power supply device for an externally powered, linearly moving motor of the breech, a device comprising a device for putting the ammunition in position, comprising a central stationary star line and further comprising two feeders loaded with different ammunition disposed on either side of the star line of station and linked together by a same support, the two boxes being able to tilt about axes parallel to the longitudinal axis of the weapon, dis-positive of which each power supply unit comprises a line of supply stars and whose each case is adapted, by its tilting, to be coupled with the device of setting station by clutching its supply star line on a reduction power take-off from the ex30 dull motor, the coupling of the first housing together with the simultaneous uncoupling of the second power supply unit of the positioning device by disengaging its line from supply star of the corresponding power take-off, and the tilting of the boxes causing the change

  the direction of rotation of the center star line.

  according to a feature of the invention, if the weapon is an externally driven firearm causing reciprocating rectilinear movement of the cylinder head, then it is expected that the output shaft of the engine / 3 - also ensures the taking of move a reduction gear transmission device located in a reduction box disposed at the rear of the weapon and driving two control shafts of the power supply boxes and a third control shaft of the central star line at the ammunition station. In addition, the invention provides that the transmission driving the two control shafts of the power supply units is a continuous transmission with reduction, the control shaft of the first power supply unit rotating in the opposite direction to that of the second control box. In combination, the transmission of motion to the third central star control shaft is a stepwise transmission, said central star control shaft rotating in the opposite direction to the control shaft of the central star. power box coupled with the device

postage.

  The device according to the invention also comprises a device for controlling the tilting of the supply boxes around their axis of rotation, the tilt control of which actuates a system of interconnection of the control shaft of the housing coming to mate with the setting device by means of a cardan joint on the axis of rotation of the feed star of said housing, and which simultaneously actuates a system of declutching the control shaft of the second housing and a system of change the direction of rotation of the centering central star, so that the direction of rotation of the central star

  is always opposite to that of the supply star line 25 coupled to the setting device.

  According to another characteristic, the device for controlling the tilting of the housings comprises a cooperating control lever

  with a means of locking the power boxes in each tilted position, the control lever then itself being locked on the gearbox of the arne.

  According to one embodiment, the lever for controlling the tilting of the boxes is secured to a toothed sector movable about an axis and cooperating with a rack carried by the common support to the two supply boxes, to obtain the change of direction rotation of the central star during the tilting of the housings, the device comprises: a gear train without reversal of direction of the transmission step by step of the central star, a reversing gear that can be put in series in the -4 gear train, when it is clutched to a control shaft and a shaft provided at the end of jaw, movable in translation in the longitudinal direction of the weapon, shaft controlled by a fork secured to said shaft and engaged on a ramp inclined relative to the longitudinal axis of the weapon or on a cam, integral with the support common to the two boxes, the tilting of the boxes causing the movement of the ramp perpendicular to the axis of the weapon and of this makes the longitudinal displacement of the shaft of a first position where it is declutched

  the reversing gear to a second position where it is clutching the inverter pinion 10 to reverse the direction of operation of the central star.

  In a variant, the stepwise transmission of the movement of the central star line may be carried out by means of a so-called "Fergusson system", or in another preferred variant, it will be constituted by a cooperating rotating crankpin. With a cross of Malteo In addition, to allow without risk of malfunction switching from one type of power supply to another, the axis of rotation of the line of supply star of each case wears a shoulder with indexing grooves and each housing carries a lever 20 indexing movable against the force of a spring When the housing is clear of the setting device, the first end of the lever cooperates with a groove the shoulder of the axis of the star line the second end of the lever being free to rotate together the line of supply stars of said housing, and when the housing is engaged on the setting device at post, the second end of the indexing lever bears on a fixed beam of the

  breech box of the weapon, the first end of the lever then being released from the groove of the axis of the line of stars to allow its rotation.

  Preferably, the axis of each foodstuff line comprises as many grooves regularly distributed over its periphery.

  that stars have branches.

  According to a characteristic of the invention, the shape of the indexing lever and the dimension of the clutching system of the housing control shaft 35 are defined to allow the indexing of the axis of feeding stars relative to to the housing before the clutch housing disengage when the latter switches to the - disengaged position and the deindexing of the star axis relative to the housing after the clutching of the housing control shaft when the latter it tilts in the engaged position on the setting device, the indexing of

  the axis of stars intervening when the weapon is in position "breech ars rêtée on the trigger".

  According to another feature of the weapon according to the invention, the central star line comprises N branches defining N chambers, N being at least equal to 3, each chamber being able to receive a munition brought by the supply star of the case in taken and successively coming by rotation of 211 turns, from a position where the ammunition is waiting, to a setting position and then to an ejection position of the ammunition bushing In this case, when the tilting

  supply boxes, the central star line changes direction of rotation, the ejection position then becoming the waiting position 1 S of the munition brought by the second housing then in engagement and the waiting position becoming a ejection position.

  According to another characteristic of the invention, to enable the first munition to be fired first of the chosen power supply, each power supply unit has a curved ammunition guide 20 comprising a front fork and a rear fork, the guide leading the munition towards the supply star line of the casing, and the line of supply stars towards the central star line in the waiting position, and the free portion of the front fork of the ammunition guide has an angled spout wrapping the ammunition at its position at the waiting station in the central star, the nose capable of retaining the ammunition of the waiting station during the tilting of disengagement of the supply box with respect to the receiver, the ammunition

  relying more upon its removal on a floor guide secured to the receiver.

  According to one embodiment of the invention, each power supply unit has a feed channel of the ammunition strip emaillonnées from the bottom of the housing and an ejection hole of the links disposed at the top of the box The box has a guide link provided over the entire length of the ammunition feed channel and ejec35 tion of the links, the link guide having a double groove cooperating with mune double tongue of each link to allow the I / I.

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  unscrewing of the ammunition when the latter is taken into account

  by the line of supply star of the case.

  In addition, if the ejection of the bushing from the ejection station takes place towards the front of the year, the device comprises a free ejection guide in rotation with respect to the axis of the line of central star and symmetrical with respect to the axelongitudinal of the weapon, rotated by the tilting of the feed boxes, the guide being positioned in each of its operating positions by means of a stop relative to a beam fixed fixed to the culas10 seet -_ the ejection guide comprises circular bearings

  of longitudinal guide of the sleeve during its ejection.

  In addition, if the center star line has N branches and each line of feed stars n 'branches, then the reduction ratio between the power take-off of the rear box, provided by the drum of control of the moving assembly and the axis

  the center star line is equal to n, the reduction ratio between said power take-off and the control shaft of each supply star line being equal to N multiplies n '.

  The invention will be described in more detail hereinafter and its operation explained from an automatic external motor weapon, without this constituting a limitation to the application of the device according to the invention which can be easily combined by a simple adaptation to any other type of weapon, including a working weapon

  by gas borrowing or inertial bolt.

  To better understand the invention, figures are appended among which: Figure 1 is a top view of the device, connection means between the removed housing, with the left housing in engagement; Figure 2 is an identical view with the right housing in engagement; Figure 3 is a partial view along GG of Figure 1; and Figure 4 is a similar view along GG of Figure 2; Figure S is a view of the reduction transmission rear case, with its hood removed; Figure 6 is a section BB of Figure 5; /

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  Figure 7 is a section along MAA of Figure S; FIG. 8 is a partial section along line FF of FIG. 5; FIG. 9 is a left view of one of the two control shafts of the supply boxes and FIG.

  the detail of the system of interconnection carried by said tree.

  FIGS. 11a and 11b show in section along HH of FIG. 2 and FIG. 11c, 11d and show in section along HHI of FIG. 1, the double feed device according to the invention at various successive instants of operation. ; FIG. 12a shows in section along the line of FIG. 1 the double feeding device, this time without ammunition, FIG. 12b in section along E-E of FIG. 1, and FIG. 12c showing the fixing detail of the case on the box. the breech of the weapon according to section II of Figure 12b; FIG. 13 shows the left power box in bottom view according to K of FIG. 12a, FIG. 14 is a section along LL of FIG. 12a. As will be described hereinafter, the invention is This weapon includes, in a known manner, a tube whose axis is fixed relative to a receiver, a cartridge chamber which is limited to the rear of the tube. by a breech; a rotary drum whose lateral surface carries a helical control ramp of closed contour, a follower or25 which cooperates with this ramp and which is integral with one of the two pieces constituted by the tube or the yoke, which piece is guided by translation by the receiver parallel to said axis, and an external motor capable of rotating the drum in a constant direction about an axis parallel to that of the tube, the ramp comprises two segments inclined in opposite directions which respectively provide the 'ravace and recoil of the movable part in translation and which are joined, a c 6 té by a non-inclined part ensuring the immobilization of this moving part during the lapse of time corresponding to the duration of the shot and the emptying the gases and, on the other hand, by a part corresponding to the power supply. The external motor is in general electric.

  it can also be hydraulically or alternatively.

  Traditionally, when a dual power supply is associated vog / * oo

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  to the cylinder head system, the change of direction of the supply is to reverse the rotation of the motor We will see later that in the present invention the device provided allows the change of power without changing the direction of rotation of the external motor or , therefore, of the drum. With each cycle of operation of the weapon, the motor rotates the drum so that the follower member travels once the

  outline closed the ramp and closes and thus opens the cartridge chamber.

  All these elements are known in a conventional manner and an exemplary embodiment has already been shown in patent FR 2,372,410. This is why these elements have not been the subject of a particular figure and only the elements (drum , movable member or cylinder head box for example) necessary for the understanding of the invention have been shown and referenced. The follower member 52 and the control drum 53 thus described

  are respectively shown in Figures 1, 2 and 6 of the present description.

  According to the invention the dual feed device comprises

  two power supply boxes 1 (left box) and 2 (right box) placed on both sides of a setting device which itself comnporte a line of central star 7 of ammunition .

  The central star assembly 7 of the setting device (FIG. 11) is carried by an axis 6 or central star line: which can be rotated sequentially in one direction or the other, depending on the type of power supply chosen, using a control shaft

  12 driven by a reduction power take-off 9 arranged in a housing 10-located at the rear of the weapon and which will be described later.

  The feed boxes 1 and 2 are arranged at the level of the bolt box 41 of the weapon and comprise a body 54 having two arms 55 allowing the articulation of the casings on the cylinder head bolt by means of axes of rotation. 4 and 4 'parallel to the longitudinal axis of

the weapon- (Figure 11 and 12).

  In another version not shown here, the arms 55 can

  be bent and articulated on a single axis integral with the cupless box and disposed under the control drum 53.

  The two control boxes 1 and 2 are connected to each other at their opposite side to the axes 4 and 4 'by a common connecting support which may be formed by one or more links 3 so that the engagement tilting (respectively clearance) from one of the boi40 /

9 -2547042

  third party simultaneously involves the release switchover (respectively

  of engagement) of the opposite supply box (Figures 3,4 and 11).

  The tilting control of the boxes 1 and 2 is ensured by a control device 16 (see FIGS. 1 and 2) which comprises a control lever proper 17 articulated around an axis 17 'and secured to each other.

  a toothed sector 19 cooperating with a rack 20 itself secured to the connecting support 3 of the two housings.

  The lever 17 cooperates with two locking means 18 (bosses, locking pins or any other means) disposed on the rear housing 10 so that the housings are locked so that

  in each of their respective operating positions.

  In addition, the shaft 12 carries a fork 27 rotatably mounted to cooperate with a cam or an inclined ramp 28 integral with the connecting support 3 This ramp 28 is inclined transversely to the longitudinal axis of the weapon of an angle included between 20 and 45, both ends

  of the ramp being perpendicular to the axis of the anae.

  When tilting the boxes around the axes 4, 4 'by means of the control device 16, the ramp 28 moves transversely to the axis of the weapon causing the longitudinal displacement of the fork 20 27 This controls the movement longitudinal direction of a shaft 12 to which it is connected, the shaft 12 being a means for controlling the system of change of direction of rotation of the axis of the central star line so that the central star line rotates always in the

  in the opposite direction to the line of supply stars engaged with the stationary device, regardless of the power supply unit in operation.

  To do this, the shaft 12 is provided at its free end jaw 26 (Figures 6 and 8) allowing it to be linked or not depending on the longitudinal position of the fork 27 to an inverter gear 30 25 of the transmission stepwise rotation of the central star line, pinion disposed in the rear housing 10 which will be described later. The housings 1 (left housing) and 2 (right housing) each have a feed line (resp S and 5 S) composed of a roaming axis (15 and 15 ') each carrying two feed stars (stars 8 of the left case and 8 'of the right case), the shafts 15 and 15' being rotatably mounted in bores 56 of the body by means of stops t * / t

2547042

combined needle roller bearings.

  The supply lines 5 and 5 'are rotated by control shafts 11 i and 11' themselves driven continuously by the reduction gearing 9 of the rear casing 10 (FIGS.

and 14).

  -5 However, the shafts 11 and 11 'each comprise two gimbals 14, 14', to allow the continuity of the transmission of movement during the start of the tilting of the boxes when the axis of the line of supply star of the box in the process of uncoupling begins to

  to be misaligned with the axis of the rear case output pinion as shown in FIGS. 1 and 2.

  In addition, between the two gimbals 14 or 14 t of each shaft 11

  or 11 ', there is a solution of continuity allowing by means of jaw 13 or 13' to rotate the axis 15 or 15 'of each supply line when the case concerned is in contact with the setting device 15. station and stop rotational drive when the housing is moved away from the stationary maize device for its tilting.

  To do this, the shafts 11 and 11 i 'are each separated into two hali comprising one of the lugs (131 or 131'), the other of the notches 132 (132 ') the two half-shafts being held in the same axis by a centering pin 57 of the first half-shaft cooperating with a bore 58

the second half-shaft, (Figure 9).

  In addition, the axes of rotation 15 Set 15 r rows of feed stars have on the outside of the flange of the housing (or the interior in a variant not shown) a shoulder 31 having grooves 25 32 which are fit to cooperate when tilting the boxes with levers 33 carried by each box to allow the locking (or indexing) in rotation of the supply line which is being de ned

  gagement and unlocking (or deindexing) of the box during engagement, (Figures 3 and 4).

  Each lever 33 actuated against a spring 34, has a first bent end 33a which cooperates with a groove 32 of the shoulder 31 and a second end 33b which bears against the beam 35 of the box. cylinder head when the case in question is engaged with the setting device and thereby frees the rotation of the axis of the line of stars concerned, while for the second case

  which is clear, the lever 33 prevents the rotation of the star line.

  As shown in FIG. 3, the left case in engagement has its line of free stars in rotation while that of the right case, not in engagement, is locked by the right lever 33, FIG. 4 showing a reverse street. , a straight box engaged with its line of rotating right-hand feedstocks and open left-hand box with its indexed feed line, To avoid a risk of non-operation due to a bad positioning of the feed stars with respect to the central star when tilting boxes, the dimensions of jaw 13, 13 'and the shape of the levers 33 are provided so that during the bascijlement of the boxes 1 and 2, the indexing of the line of stars on its case in clearance course (for example 5, Figure 4) is performed before the declutching of its control shaft 11 and the similarly clutching the control shaft 111 of the housing 2 is made before its disindexage compared to the box In this With regard to the reduction power take-off 9, and referring in particular to FIGS. 5 to E, it can be seen that the rear boot is actuated from the rotation of the compression drum 53, which in turn Tne by the external motor and which has on its shaft end a driving pinion 21 The pinion 21 drives a pinion 22 secured to a shaft 59 mounted free to rotate by means of bearings 60 The shaft 59 also carries a pinion 61 which drives the two supply lines of the boxes for the left case by means of an intermediate gear 62 25 which meshes with the toothed wheel 63 of the control shaft 11 of the left case; for the right housing by means of two intermediate gear wheels 64 and 65, the pinion 65 driving the toothed wheel 66 4 and the camshaft 11 'of the right housing In this way, the shafts 11 and 11' have rotations of direction The opposites are carried out continuously so that a drive of the belt-loader can be obtained smoothly and thus without risk of breakage or accidental detachment of the links. The driving of the central star line takes place from the toothed wheel 22 carried by the shaft 59 which is integral with an eccentric crankpin 29 (shown in FIG. 5 and of which only the axis is shown in FIG. 6) carried by a rotating support 67, the crank pin -12 -

  29 cooperates with a Maltese cross 30 secured to a shaft 68 mounted by means of a combined bearing stop 69 on the rear flange of the body and a bearing 69 'on a cylindrical end bearing surface of the shaft 12.

  In the embodiment presented here, the Maltese cross 30 has 4 branches and the central star of setting while the supply star of the boxes have 3 branches so that the control shaft 12 and therefore the central star 7 rotate sequentially 1/4 turn as the feed stars rotate

continuously 1/3 of a turn.

  Regardless of the box in use, it is necessary, in order to ensure the operation of the weapon, that the central star-setting line rotates in the opposite direction of the line of feed-in stars. It is necessary to provide a system for changing the direction of rotation of the central star line when the boxes are tilted. The system for changing the direction of rotation comprises, for this purpose, the double reversing gear 25 which is driven by the toothed wheel 23, and which The operation of the reversing gears 25 and 70 is controlled by means of the jaws 26 by the longitudinal displacement of the arbbre 12 during the tilting of the boxes as described above. As shown in FIGS. 6 and 8, the claws 26 of the shaft 12 are in direct contact with the corresponding notches of the pinion 23 and it is in the case of FIG. 1 where the left box 25 is engaged With the device for setting the ammunition in this case, the pinion 23 integral with the Maltese cross 30 drives the wheel 25

  it meshes with the pinion 70, itself driving the pinion 24 But it is not engaged on the jaw 26, turns crazy on the axis 12.

  When switching to the operating mode of FIG. 2 (box 30 in straight engagement), the tilting of the lever 17 has caused the fork 27 and the ramp 28 to move and, consequently, the control shaft 12 has has been moved longitudinally towards the front of the weapon The claws 26 that it carries have been released from the pinion 23 and have been engaged on corresponding grooves of the pinion 24 The inverter gear 25,70 thus causes the pinion 24 and the pinion 24 to rotate. Thus, the shaft 12 in the opposite direction of the rotation of the Maltese cross 30 The central star line set has therefore changed direction of rotation and is therefore able to take the / 13 - ammunition presented by the supply line of the right case then

in take.

  To complete the dual feed device and allow the first ammunition of the selected loader strip to be pulled first (and not the last ammunition of the opposite loader strip previously selected), each feed box has a ammunition guide 36 consisting of a front fork 37 and a rear fork 38 on which the ammunition is supported during its management by the line of feeding stars 5 (or 5 ') o The front fork Ac> 37 has at its free end an angled spout 39 which, when the casing is engaged, serves as additional support for the iunition, and when the casing tilts during release, is able to drive the ammunition waiting station outward of the central star line, in

  A position where the ammunition thus withdrawn can no longer interfere with the operation of the central star line whose direction of rotation has been inversely reversed by means of the inverter train 25,70.

  The device furthermore comprises an ejection guide 49 mounted free to rotate relative to the central star line 6 and symmetrical with respect to the longitudinal axis of the weapon. The guide 49 is displaced to rotate by the tilting of the boxes 1 and 2, the guide 49 then being positioned in each of its operating positions by means of

  two butts 50 with respect to the beam 35 of the receiver.

  The ejection guide has circular bearings 51-de

  longitudinal guide of the sleeve (pushed by the pusher 90 of the follower member LS 52) during its forward ejection longitudinal displacement.

  The operating sequences of the dual feed device according to the invention can then be explained with reference to FIGS. 11a to 11e. Referring to FIG. 11a, the right box is engaged with the device in the position shown

Figures 2 and 4).

  The feed star 8 'rotates driven by the shaft 11' and the positioning star 7 has turned in the opposite direction to that of the star 8 '. The star 8 is fixed in rotation, locked

S by the lever 33 (see Figure 4).

  A charger strip is engaged by the bottom of the housing in a feed center 42 practiced over the entire height of the power supply box.

ee / q.

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  Ammunition 71 is at the firing station and will be engaged towards

  the front in the cylinder head (where it will be drawn) by the longitudinal displacement of the follower member 52 driven by the control drum 53.

  The rotation of the star 8 'has simultaneously put in the position of at5 attempts the next ammunition 72 The ammunition 73 also driven by the star 8' is being stripped of its link, the latter having tongues 47, 48 sliding in the grooves 45, 46 of the link guide 44, (Figure 13) The link is then ripped radially from the ammunition

  and driven to the ejection port 43 disposed at the top of the casing.

  In the following figure 11b, the follower member 52 has made a return and is in the rear position. When in this position, the central star rotates a quarter of a turn, bringing the fired munition 71 into position. ejection position and ammunition 72 at the firing point,

  ammunition 73 preparing to go to the waiting station.

  During the following reciprocating movement of the follower member, the central wheel 7 is at a standstill, the bushing 71 is ejected towards the front of the weapon by an ejection pusher 90 secured to the follower member and the

ammunition 72 is fired.

  FIG. 11c shows the device when the casements have just been tilted. The follower member 52 is in the rear position, cylinder head stopped.

on the relaxation.

  The ammunition 73 which should have been at the waiting station was put out of reach of the star by the spout 39 of the front fork 25 of the ammunition guide of the right casing during its release. 73, this one was guided in support of the guide

  floor 40 of the receiver.

  Simultaneously, the feed line 8 'was indexed relative to

  to the stacker 2 by its lever 33 just before being disengaged from its control shaft 11 'by jaw 13' and its operation is thus stopped.

  At the same time, the jaws 13 of the control shaft 11 of the housing 1 have engaged and the shaft 11 has been deindexed from the housing 1 its lever

  33 (FIG. 3) bearing on the beam 35.

  At the same time, the tilting of the housings has displaced the shaft 12 (FIG. 1) rearwardly, which has disengaged the jaws 26 of the pinion 24 and engaged them on the prignon 23. As a result, the central star has changed direction.

of rotation.

  / The tilting of the box to the receiver has caused the rotation of the ejection guide 49 to the right until it stops

  on the beam 35 by means of the stop 50.

  The star 8 and the central star 7 now rotate in opposite directions and the first ammunition 81 of the left case is put in the waiting position. The nmition 72, which has just been drawn, instead of being ejected on the left side of the weapon, will be dragged to the right, the old one

  standby position of the right housing becoming ts the ejection station of the bushing 72 guided by the ejection guide 49 (Figure 11 d).

  During the rotation of a quarter of a turn of the central star 7 which has put the bushing 72 at the ejection station to the right, the immition 81 is put in the firing station A new longitudinal reciprocating movement

  the follower member 52 will drive forward the ammunition 81 to be fired and the bushing 72 to be ejected.

  FIG. 11 e shows the continuation of the operating sequence of the left feed casing 1, after ejection of the bushing 81 by the straight lines when the ammunition 82 is at the firing station and the next ammunition

83 at the waiting station.

  The moving assembly 52 will make a new reciprocating movement and then come back to hang on the trigger, or contriu Meun another cycle

depending on the shooting mode chosen.

  The device as described thus makes it possible to obtain an excellent regularity of fire at high speed with a dual feed device operating symmetrically and allows a very rapid change of the feeding mode when the breech is stopped on the tent since all the movements necessary for the change of feed (toggling of the shifters, reversal of the direction of rotation of the central star line, indexing and decoupling of the line

  disengaged feed, deindexing and crabottage of the feed line engaged) are performed simultaneously by a single action of the operator on the tilting lever 17.

  In addition, without departing from the scope of the invention, the operation of switching lever 17 can even be mechanized, the lever 17 can then be replaced by any motor with electrical control acting on the toothed sector 19, locking the device in its operating position then being provided by the stopping position of said engine

of cormamde.

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Claims (12)

REVENDI CAT IONS   1 dual feed device for a weapon with external motor power supply and linear displacement of the cylinder head, device comprising a device for placing the ammunition including a line 6 central star 7 to set and also having two boxes power supply (1,2) loaded with different ammunition arranged on either side of the star line of station and linked together by the same support (3) the two boxes being able to tilt around axes (4,4 ') parallel to the longitudinal axis of the weapon, characterized in that each power supply unit comprises a line 10 (5, 5') of stars (8,8 v) supply and in that each box is adapted, by its tilting, to be coupled with the setting device by clutching its feed star line on a reduction power take-off (9), the coupling of the first case s' accompanying the simultaneous uncoupling of the second the power supply of the setting device 15 by declutching its power supply star line of the corresponding power take-off, and the tilting of the gearboxes entailing the change of direction of rotation of the central star line of bet at post.   2 dual feed device according to claim 20 1 for an external motor driven firearm entnant the setting in rectilinear reciprocating movement of the cylinder head, characterized in that the external motor ensures the power take-off of a device for reducing motion transmission (9) located in a reduction box (10) disposed at the rear of the weapon and driving two control shafts (11, 11 ') of power supply units and a third control shaft (12) of the line Canvas   central station for the ammunition.   3 double feed device according to claim 2, characterized in that the transmission driving the two control shafts (11, 11 ') of the power supply units is a continuous transmission with reduction, the control shaft (11) of the first a power supply unit rotating in the opposite direction to that (11 ') of the second power supply unit and in combination, the transmission of motion to the third control shaft (12) of the central star is a transmission not to   not, said control shaft of the central star rotating in the opposite direction 35 of the control shaft of the power supply unit coupled with the setting device.   4 dual feeding device according to claim 3, characterized in that it comprises a control device (16) of the tilting of the feed boxes around their axis of rotation, the tilt control actuating a system of interconnection (respectiS VEMENT 13 or 13 ') of the control shaft of the housing coming to mate with the setting device by means of a cardan joint (14 or 14'), on the axis of rotation (15 or 15 ' ) supply star of said housing, simultaneously actuating a clutch system (respectively 13 'or 13) of the control shaft of the second housing and a system 10 for changing the direction of rotation of the central star of posting , so that the direction of rotation of the central star is always   opposite of that of the feed star line coupled to the setting device.   Double feeding device according to claim 4, characterized in that the device for controlling the tilting of   housings Comprises a control lever (17) cooperating with a locking means (18) of the supply boxes in each tilted position, the control lever then being locked on the reduction box 10.   6. Double feed device according to any one of claims 4 or 5 characterized in that the control lever   (17) of the tilting of the boxes is secured to a toothed sector (19) movable about an axis and cooperating with a rack (20) carried by   the support comnm (3) to the two power supply boxes.   A dual feed device according to any one of claims 4 to 6, characterized in that the change system   of direction of rotation of the central star line during the tilting of the housings comprises: a gear train (21, 22, 23, 24) without reversing of the transmission direction not> not of the central star a reversing gear (25) which can be put in series in the gear train, (21 to 24), when it is clutched to a control shaft (12) and a shaft (12) mmuni end of jaw (26), movable in translationi dams the longitudinal direction of the weapon, shaft controlled by a fork 35 (27) integral and er catch on a ramp (28) inclined relative to the longitudinal axis of the weapon, secured to the support (3) common to both cases, the tilting of the boxes causing the displacement of the perpen ramp. I dicularly to the axis of the weapon and thus the longitudinal displacement of the shaft (12) of a first position where it is declutched from the reversing gear (25) to a second position where it is clutched to the reversing gear to reverse the direction of the line of central stars (6). 8 Dual feeding device according to any one of   claims 3 to 7 characterized in that the transmission not to   not the movement of the central star is constituted by a crankpin (29)   rotating cooperating with a Maltese cross (30).   9 Dual feeding device according to any one of   Claims 4 to 8, characterized in that the axis of rotation (15 or 15 ') of the supply star line of each door housing   a shoulder (31) having indexing grooves (32), in that each housing carries an indexing lever (33) movable against the force of a spring (34), in that when the casing is released from the setting device, the first end (33 a) of the lever cooperates with a groove (32) of the shoulder (3) of the axis of the line of stars, the second end ( 33 b) the lever being free to rotate together the supply star line of said housing 20 and in that when the casing is engaged on the setting device, the second end (33 b) of the lever of indexing (33) bears on a fixed beam (35) of the gun breech box, the first end (33 a) of the lever then being disengaged from the groove of the shaft   of the star line to allow its rotation.   10 Apparatus according to claim 9 characterized in that the axis (15, 15 ') of each row of feedstocks comprises as many grooves (32) regularly distributed on its periphery, as the stars (8, 8 ') have branches.   11 Device according to any one of claims 9   3 S or 10, characterized in that the shape of the indexing lever (33) and the dimension of the clutch system (13, 13 ') of the housing control shaft are defined to allow the indexing of the the axis of stars (15, ') relative to the housing (1 or 2) before the clutching of the control shaft of the housing when the latter tilts in the unobstructed position and the deindexing of the axis of stars (15 or 15 ') relative to the housing (1 or 2) after the clutching of the control shaft of the housing when the latter tilts in the engaged position on the setting device, i. the indexing of the axis of stars intervening when the weapon is in breech position stopped on the trigger "12 Double feeding device according to any one   Claims 2 to 11, in which the centering star (7) has five branches and each feedstop (8, 8 ') has   branches 1 characterized in that the reduction ratio between the power take-off of the rear gearbox (9) provided by the control drum of the moving assembly and the control shaft (12) of the central star line is equal to n, the reduction ratio between said power take-off and the control shaft (11 or 11 ') of each feed star line being equal to N that multiplies n o 13 Dual feeding device according to any one   Claims 1 to 12, wherein the line of central stars (7) has n branches defining N chambers, N being at least 3, each cha15 iber being able to receive a munition brought by the feed star   (8 or 8 ') of the housing engaged and coming successively by rotation of ^ ^ turns of a position where the muntion is waiting, at a position   and then at an ejection position of the ammunition bushing, characterized in that during the tilting of the feed casings, the central star line 'changes direction of rotation, the position of ejection then becoming the waiting position of the ammunition brought by the second housing then in engagement and the waiting position becoming an ejection position.   A dual feed device according to any one of claims 1 to 13 wherein each feed hopper (1 or 2)   Folds a curved ammunition guide (36) comprising a front fork (37) and a rear fork (38), the guide leading the ammunition towards the row of stars (8 or 8 ') for feeding the case and the line supply star towards the central star line (6) in the waiting position, characterized in that the free portion of the front fork of the ammunition guide has a bent nose (39) enveloping the ammunition during its position at the waiting station in the central star, spout able to withdraw the ammunition from the waiting station during the tipping of the bit-ier feed relative to the receiver, mu35 nitioa leaning from more when removing it on a floor guide   (40) secured to the receiver.   Dual feeding device according to any one   Claims 1 to 14, wherein each power supply housing has a   intake channel (42) of the ammunition strip wrapped by the bottom of the housing and an ejection orifice (43) of the links disposed at the top of the housing, characterized in that the housing has a link guide (44) dis5 posed along the entire length of the supply channel (42) of ammunition and ejection (43) of the links, the link guide (44) having a double groove (44, 46) cooperating with a double tongue (47 v 48) of each link to allow the stripping of the ammunition when taking into account   of this last by the star of feeding of the case.   16 Dual feeding device according to any one of   Claims 13 to 15, including the ejection of the socket from the   ejection station is carried out towards the front of the weapon characterized in that it comprises an ejection guide (49) free in rotation with respect to the axis of the central star line (6) and symmetrical with respect to the longitudinal axis lon15 of the weapon, controlled in rotation by the tilting of the feed boxes, the guide (49) being positioned in each of its operating positions by means of a stop (50) relative to a fixed beam (35) secured to the receiver and in that the ejection guide comprises   circular bearings (51) for guiding the sleeve longitudinally during its ejection -