DE78203C - Automatic firearm with drop block lock and box magazine - Google Patents

Description

IMPERIAL

PATENT OFFICE

'The automatic Firearm is modified in such a way that instead of the cylinder lock, a Wedge or block lock is attached. This wedge lock opens and you sleep more easily and more reliable than the cylinder lock and eliminates any danger for the shooter, because the firing pin is only ready for delivery when the closure is completely made of the shot can hit. In addition, the whole, linked to the wedge lock, is needed The locking mechanism is less powerful and is easier to construct.

In Figs. 1 to 15 of the drawing is the Mechanism shown in application to a pistol.

Fig. Ι shows the right side view of the weapon. in a ready-to-fire condition, so with Completed closure and cocked cock. The one that sets the locking wedge in motion Mechanism and the new trigger construction are shown dotted.

Fig; 2 shows

Rigid whole removed from the lock case alone in right side view with opened locking wedge and its movement mechanism.

Fig. 3 shows the lock mechanism with the lid of the lock case removed from the left side. . The cock is at rest. The position of the stare on Movement mechanism located on the left-hand side, which allows the pulling out and

that of the lock case or the hurling of the fired cases and that Re-inserting the cartridges from the magazine into the barrel bearing concerned corresponds to the loaded one Conditions.

Fig. 4 shows the same left side view at the moment in which the rigid After it is driven back by the action of the shot, the tap and the whole the spring has cocked and again, is in the process of proceeding. Initiated by The locking wedge has already opened in the first part of this procedure, in the second In part, the cartridge ejector mechanism has the first part of its action, the firing Pulling the cartridge case out of the camp and ejecting it is fulfilled. He stands in Term for inserting the cartridge that has risen from the magazine into the store.

Fig. 5 shows how the rigid whole in its further advance the advancement of the Slide cover terminated by the sling and the cartridge with the aid of the cartridge puller has pushed it completely into the chamber. However, the locking wedge is still open. The same is only concluded in the last quarter of the procedure of the rigid whole, then the pistol is ready to fire.

The remaining figures represent:

Fig. 6 the cartridge throw lever with centrifugal chain,

Fig. 7 shows the armature, which controls the reciprocating movement of the cartridge thrower

determined with the help of the spring clamp and the preceding rigid whole,

Fig. 8 the double-armed lever - the anchor lever - which, on the cock shaft rotatably pushed on, has a pin on its lower arm on which the anchor engages, and in its upper part receives the impetus for its movement, partly through the spring clamp and the spring driving the rigid whole, partly through the procedure the rigid whole itself,

Fig. 9 the slide cover with firing pin,

Fig. Io the cartridge puller stored therein with a lifting mechanism,

11 shows the pawl for the tap,

Fig. 12 the on the axis of the pawl located trigger with intermediate pawl together with a common spiral spring for the pawl, Intermediate latch and trigger,

Fig. 3 the locking wedge (locking block) with its springy ignition pin,

14 shows the tap or hammer.

Fig. Ι 5 the inner view of a part of the lock case wall with a diamond-shaped Recess in which the end of the locking lever moves by means of a guide pin.

In Fig. 16, an embodiment of the spring mechanism is shown in which the smooth tap and propulsion feathers of the rigid whole by similarly shaped long ones Lever arms are replaced, which are pressed down by two strong spiral springs.

FIG. 17 shows a further embodiment of the self-loading rifle for an infantry rifle in FIG right side view, fired and in rest position, in which the mainsprings by a simple but double-acting spiral spring are replaced.

Fig. 18, section CD, illustrates the lateral mounting of the spiral mainspring and its tension by the cock and the return of the rigid whole.

Fig. 19 shows a modified embodiment of the locking mechanism. The pistol is shown in an outer left side view, the new locking mechanism is punctured and the locking wedge is shown closed.
. Fig. 20 shows the tap rotatable with the armature lever / and lock opener f mounted on the same shaft, the latter being pushed onto a square of the tap shaft.

The individual parts of the palace are related to one another as follows:

The magazine box α, which is firmly screwed to the tube, contains the locking wedge or block b, Fig. 2, which moves in the upright direction in a particularly strong section of the same outer width, which when the lock is made (Fig. 1 and 3), with the cartridge insert a ^l located above the magazine, FIGS. 1 and 2, aligns. In the latter there is the slide cover c, FIGS. 4 and 9, which contains the firing pin d provided with a light spiral spring d ^l as well as the extractor e, FIGS. 4, 5, 3 and 10 in a hole above it, and when going back and forth the most frequent cartridge from the magazine introduces respectively into the barrel. the fired cartridge case pulls out after the shot. In addition, the slide cover c closes the magazine upwards and mediates the ignition by the firing pin, in that the proposing cock h drives the same onto the short springy firing pin f in the locking wedge b , which acts on the primer in the loaded cartridge. The firing pin f ' ² in the locking wedge b, Fig. Ι 3, is expediently worked in one piece with the smooth spring f ^l embedded in the rear face of the latter.

The opening. and closing of the wedge b mediates the two-armed locking lever i, Fig. 1 and 2, located on the right side of the magazine box, rotating in an axis in the rear box wall, the front arm of which with a cranked fork b ^l , Fig. 2, on one Engages tenons on the right side of the wedge. A locking clamp i ^{2 is} rotatably attached to the rear arm. This arm z ² has a bearing z ' ³ at the bottom, which braces itself against the fixed attachment z ⁴ located in the lock case when the magazine goes back.

The back and forth movement of the slide cover c mediates the centrifuge k, which BEZW through the centrifugal chain A ¹ , Fig. 6, with the slide cover. is connected to the extractor e moving therein in such a way that the extractor goes with the slide cover up to its front position, after which the extractor e alone continues its march forward and by means of the nose e, Fig. 10, the cartridge completely into the barrel pushes in. When marching back, the reverse takes place. The extractor, going back alone, pulls out the cartridge and leads it back over the locking wedge until the bottom of the cartridge rests against the recessed bottom of the slide cover, whereupon both continue to go back together.

The coupling and uncoupling of the extractor with the cartridge base respectively. Slide cover happens in the following way:

The cartridge puller e, Fig. 10, is widened at its rear end and bent downwards at an angle to the side. In this side facing the centrifugal chain k ^l , the latter engages with. a pin k ² , Fig. 6, in 'an elongated slot e ^{2 of} the extractor (Fig. 10) so that the sling chain, although it remains firmly connected to the extractor, is

however it can raise and lower. If, after the locking wedge is opened, the cartridge case is to be pulled out by the sling k , the sling moves back together with chain A: ¹ and initially only takes the cartridge puller e with it until the cartridge case with its base part in the head The appropriate milled cartridge bottom groove located in the slide cover is pulled in and the slide cover, still held by the cartridge puller, moves completely backwards until the cartridge is thrown out by the lower edge of the cartridge hitting a screwed-in pin, rotating upwards. The common retreat is brought about by the pin A: ² touching the end point c ^{2 of} the recess (Fig. 9) of the slide cover c (Fig. 4), the pin k ^{2 of} the calking chain already moving beforehand as a result of the declining circular movement of the pin k ^{4 of} the sling (FIGS. 4 and 6) moves downwards so that the pin k ² is positioned in c ″ , while the pin e ^{3 of} the extractor enters the cavity k ^{s of} the sling chain (FIG. 4) Now the sling k moves forward, it first takes the slide cover and the extractor with it, pushing the top cartridge out of the magazine in front of it; however, as soon as the slide cover has arrived in front of the locking wedge, most of the cartridge is already in the bearing of the barrel is inserted, so lifts the circular motion of the pin k ⁱ the pin k ² with the help of k ³ of 'the milled c ² of the lid out. the cartridge extractor slides now on the slide cover to c ^1, Fig. 9, along and sets as the Movement to vo rn away alone. The cartridge, which now has so far guidance in the bearing that it can no longer sink and ^{can no longer evade the cartridge puller attachment e 1} , is now completely pushed into the bearing. The extractor has to act partly as a cartridge pusher at the same time. The movement of the sling is taken care of by the anchor m, Fig. 7, by means of its two arms m ¹ and m ² provided with detents, by pulling alternately on the two pins k ⁵ and k ^s , Fig. 6, the sling the latter snap back and forth.

The nut thread for the barrel to be screwed in is located at the top of the magazine box. the locking wedge housing. The barrel and the magazine box with the locking wedge with locking lever and locking chisel, the slide cover with cartridge extractor and the sling lever with sling chain is a firmly connected rigid whole (Fig. 2), which is, between the two Castle box walls sliding, moved backwards at the Schufs. Here, to give him the front (d ¹⁾ in the sleeve moving operation, then the moving rear by two strips on the storage box in corresponding bearings of the 'two box walls outward Endtheile the cartridge insert a ^l the necessary reliable guidance.

Behind the magazine box, cock h is attached between the two lock box walls on an axis Tz ¹ fixed in the right box wall. The mainspring 0, which is screwed into the rear of the barrel of the pistol, acts on the same. The cock is cocked when the magazine goes back through the nose α ³ , Fig. 3 and 4 located at the bottom of the rear part of the magazine . Furthermore, the trigger pawl η and the trigger r with the intermediate pawl are in the lock case wall on a second fixed axis r ¹ arranged. Both are always forward BEZW by a spiral spring r ² with pin r ^3. pushed up. The closing spring q, which can be made from one piece with the mainspring of the cock 0 , will. When the magazine box retreats at the Schufs through the spring clamp q ¹ , Fig. 4 and 5, which is attached to it by means of a hinge and which is also pushed back by the magazine box , lifted and thereby stretched.

The armature lever / rotating on the extended cock shaft h \ Fig. 4, 5 and 8 is connected at the bottom to the armature by a pin / 'and is forced at the top by means of a thin pin / ² embedded in a slot in the spring clamp gg ¹ Follow movements of the spring clamp.

The pin i ^{1 of} the locking clamp z ' ² and the locking lever i, Fig. 1 and 2, protrudes to the rear and protrudes with this pin into a diamond-shaped recess (Fig. 1 5) sunk into the lock box plate - the locking nut ; it is divided in the middle by a wall into an upper and a lower passage. The pen moves in the upper passage when the rigid whole moves forward and in the lower passage when it goes back.

The lock case cover on the left side can be removed and is firmly connected to the lock case by ^{means of three screws »'1} »' ² »' ^{3, Fig. 3.} It is used for better durability because of the storage on the other side for those of the tap and the trigger. On the lower side, the open area from ν to v ¹ between the two box walls is closed by the vent plate.

The locking mechanism now works as follows:

As in the main patent no. 57117 and additional patent no. 59354, the barrel deviates with the Magazine box and the attached

Partly, that is, the rigid whole, all in all sharply retreated as a result of the reaction in the Schuis. In this case, the nose is by means of a ³ of the tap h and the spring Temme ^ ¹ by means of the Schlofsfeder q tensioned FIGS. 3 and 4 is the last moment of the decrease by impact of the ^s i to the rotation axis, Fig. 1 and 2, the Verschlufshebels i located nose of the locking clamp i ² on the at the end of the diamond-shaped recess (Fig. 1 and 15) located fixed pin ^ the lower end i ^{3 of} the locking clamp forced to jump behind the paragraph i ⁴ on the lock box wall. At the same time, the "action of the armature lever I " moves the armature m forward, the upper armature catch m ¹ sliding over the pin A: ⁵ , Fig. 4, above the centrifugal axis and inward a short distance over the same to the left .

After the gas pressure has ceased, the tensioned key spring q drives the rigid whole forward again, with the following processes occurring.

In the first part of the procedure, the locking ^{clamp z '2} , supporting itself at the bottom at z' ³ i ^i, turns the locking lever energetically upwards at i ¹ and downwards at b ¹ , so that the wedge b goes down and the lock opens. Here the pin P of the locking lever enters the upper gear of the locking nut (Fig. 15) and goes back further forward in the same, so that the locking cannot open again voluntarily as the advance progresses.

If the lock is completely opened, the spring clamp begins to act on the armature lever /, driving its upper arm Z ² forward, while the lower arm Z ¹ with the coupled armature m backward (FIG. 4). Since the magazine box with the sling and its two pins / c ⁵ and k ⁶ now goes forward at the same time, it becomes clear that the anchor catches m} m ' ² and the sling k move at twice the speed and more (depending on the length of the anchor lever) from each other, with the result that the anchor detent jw ¹ , after it has hooked onto its pin k ⁵ , snaps backwards with great speed and force. The anchor catch is hooked in with the aid of the inclined surface m ⁴ on the lower anchor arm (FIGS. 4 and 5) by allowing the anchor to lower itself, sliding along the pin k ^{6 of the sling.} The short, straight surface behind Wz ⁴ prevents premature release of the upper anchor arm from the detent M ¹ .

The rebounding slingshot first drives or snaps back the extractor with the cartridge, while the slide cover c remains in place until the extractor is completely brought back into it. Only then, when the bottom of the cartridge case rests against the face of the slide cover, do both extractor and slide cover go back together as a result of the coupling that has occurred.

After the slide cover has retreated and the cartridge case has been ejected as a result, the inclined surface m ³ on the lower side of the lower armature arm m ² , by sliding along the pin y fixed on the magazine box, lifted the armature up again (Fig. 4), so that the anchor catch at m ^{1 is free} from the pin k ⁵ , while the lower catch m ' ² hooks on the pin k ^e. Since this pin is located under the sling axis, the sling is snapped forward with the slide cover. Here, the latter guides the top cartridge in the magazine to the front. Once it has completed its way, the extractor now advancing alone pushes the cartridge completely into the barrel ^{by means of the extractor nose e 1} , Fig. 10, which is opposed on the cartridge base, after the decoupling of the slide cover has occurred.

Towards the end of this movement the pin k ¹ , Fig. 4, the sling has pushed the armature down again by its circular movement downwards and the pressure exerted thereby on the surface m ⁵ and thereby freed the detent ^{at m 2} from the pin k ^{e, so that} the rigid whole can make a short way forward even further unchecked. This short path is used to make the lock (Figures 1 and 2). The pin P of the Verschlufshebels Namely, arrived at its advance into the upper passage of the diamond-shaped recess at the end thereof at \\ Fig. 15 and then slides the further last short rise of the rigid whole on the oblique sidewall ^ ¹ of Nuth along, wherein it has to lower itself, which results in the locking wedge being lifted and thus the closure being made. The pin P has now reached the lower part of the diamond-shaped indentation and, when the rigid whole moves back, marches back in the lower passage, from which it only emerges at the end of the return movement into the free space behind. The shutter can therefore not open voluntarily or prematurely during the shot.

The peculiar arrangement of the latch with trigger has the purpose of the latch in the Would be to move, regardless of the trigger, to jump back into the cock stop immediately, as soon as the cock is cocked. The latter happens when the rigid whole goes back

so fast that the finger of the crooked person has not yet found time to release the trigger after firing, and would even receive a bouncing blow if this were not _{avoided by setting up the pawl r} i _r 2, Fig. 4 and 5. The trigger r and the pawl n, Figs. 11 and 12, with a ring around their axis, are pushed onto a fixed pin of the lock case in such a way that both remain together even when removed. ^{An intermediate pawl r 1} attached to the rear part of the trigger transmits the pressure of the trigger to the pawl n, lifting it out; a spiral spring with drive pin r ³ attached to the side of the trigger presses with one end directly against the extension n ^{1 of} the pawl n, Fig. 4, 5, 11 and 12, and drives the same into the stop of the cock. The other end of the coil spring pushes the bolt r ⁸ back against the slope at w ^{3 of} the lock case wall (Fig. 4), thereby always driving the trigger forward. The pawl r ¹ has a nose r ² , which moves with limited gear in a recess in the lock case at w ³ . If the trigger is now withdrawn for the purpose of firing, the cone r ^{1 is positioned} under the pawl η at w ² , lifting it out, so that the tap leaps forward and ignites; When the trigger is naturally pulled through further, the cone r ¹ , moved backwards by the shoulder r ² , slides out from the pawl η , so that it is free and, following the pressure of the spiral spring, again engages itself. exciting Hahnes can step in. If the trigger is released by the finger, it slides forward by slipping the drive pin in the inclined box wall at w ^3. The intermediate ^{pawl r 1} is stopped in its ^{turn at r 2} and has to stand under the pawl η again, after which the game can begin again.

In spite of the manifold nested parts, the pistol is so arranged that that it can be dismantled easily, almost without tools. After the lock case lid, which can also be attached in another way, removable without tools, is unscrewed, the left-hand parts can all be lifted off. After both The main spring and cock spring, partially unscrewed and the chains unhooked, can be used by the Hahn can also be lifted off, as well as the trigger, which is a whole with the latch forms. The rigid whole, withdrawn and turned upwards, comes out of his Loosen the guide rails and pull out of the lock case housing together with the barrel. The parts making up the lock can then also be lifted off and the lock wedge removed. The assembly is done in reverse order. The details of a device to open the magazine by means of the side lever, the automatic remaining open of the same, if it is empty, and the box arrangement for loading the six magazine cartridges are not described or shown as insignificant.

The vertically moving locking wedge b can also be replaced by a horizontally moving wedge or block with a corresponding modification of the associated movement mechanisms.

Instead of the two long ones. Schlofs- and valve springs 0 and q can also two rotating lever arms are mounted to a uu mounted on the rear shaft of the gun pin against which two by guide. Press thorn held spiral springs (Fig. 16). The lever arms are lifted upwards in exactly the same way as the springs (Fig. 4) when the rigid whole is retreated, whereby both spiral springs are tensioned, so that one uses its force to operate the mechanism, the other finally to ignite the cartridges through the Hahn can deliver.

Instead of these spiral springs, a double-armed flat spring can also be inserted. These two springs can also be replaced by one which is brought between the two lever arms u then lying one above the other; this would only require the small change that the cock pinch chain would be changed to the usual cock pull chain.

The embodiment shown in FIGS. 17 and 18 shows the lock mechanism described, but with a double-acting spiral spring, in use on an infantry rifle. By the retreat of the rigid whole (barrel with lock and magazine box) at the Schufs, this mainspring is pressed together from both sides. Behind this is done indirectly by tensioning the tensioning of the cock, by which vorbewegende Hahn chain pulls s Federcylinder the forward, direct forward by the decrease of the rigid whole by means of the movable plunger in the Federcylinder. The shutter of the cartridge ejector and lock mechanism is exactly the same as that of the pistol. Of course, the two flat drive springs of the pistol, as shown in FIGS. 1 to 4, can be used in an infantry rifle in a similar way to the spiral spring device in FIG. 17. The spiral spring device on the infarction rifle (Fig. 17 and .18) can also be transferred to the pistol. For better guidance of the barrel in infantry rifles, the barrel slides expediently at the front in a bearing of the jacket tube surrounding the barrel.

Another embodiment of the locking mechanism is shown in FIGS. The lock is opened here by the direct action of the key spring q by means of the key and spring clamp q ¹ . The shaft I ^s , which is pushed onto the faucet axis fastened in the lock case wall, carries the anchor lever / on the left side and the lock opener t fastened by a square on the right side. The cock h is rotatably pushed onto the offset shaft I ^s between the armature lever and the lock opener. After the rigid whole thing has receded by the gas pressure at the Schufs, the upper arm Γ ^{2 of} the anchor lever is caused to move forward when ^{the spring clamp ^ 1 goes down.} The lock opener t attached to it at right angles immediately goes upwards and, by means of the arm i ^a, lifts the lock lever i , guiding the lock wedge downwards. With further rotation of the anchor lever, the previously described functions of the anchor are closed, while the arm i ³ slides along the shutter opener in the dead corridor and the rigid whole moves steadily forward. After the gun has been loaded, the upper arm proposes i ¹ of the Verschlufshebels mounted in the fixed pin Schlofskastenwand J ^ and lifts, by the last part of the advance of the rigid whole occasioned, the Verschlufskeil up again.

Claims (4)

Patent Claims: 1. In the case of the. Claim 1. of the patent no. 57117 protected automatic firearm with cylinder lock and box magazine, the replacement of the lock cylinder (b) with locking disc (k) and the locking pawl (s) by a locking wedge or locking block (b) arranged on the front of the rigid whole which by means of a rear and through the operation of the rigid whole controlled Verschlufshebels (i) is bethätigt. 2. The following special equipment on the firearm marked under 1.: a) the control of the locking lever (i) when the rigid whole is retreating by a locking clamp (i ² ) in such a way that its nose (i ^h ) hits a pin (\) fixed in the lock case and thereby contacts a Nose fi ³ ) presses against an abutment (i *) fixed in the lock case, so that the rear part of the locking lever (i) is pushed upwards and the locking wedge is opened; b) the control of the locking lever (i) during the process of the rigid whole by the locking clamp mentioned under 2 a) in such a way that this slides with a pin (i ^x ) on an inclined wall (\ ^l ) in the lock case and thereby the rear Part of the locking lever is lowered and the locking wedge is in the lock. closed position is raised; c) the guiding of the locking clamp mentioned under 2 a) and 2 b) by a pin (i ^l ) in 'one attached in the lock case, through a partition in a lower and an upper one ■ -Gear for the pen divided recess (Fig. 1 5), whereby the locking wedge when the rigid whole is proceeding neither can close prematurely, nor open prematurely when creating; your . containing the firing pin, over. The slide cover (c) that can be moved back and forth on the cartridge magazine with the extractor (e) that can move on it, which parts are coupled to one another in such a way that the extractor goes back first alone, then with the slide cover, then goes back first together with the slide cover and then alone can finish his process, using a nose (e ^l ) to push a cartridge that has risen from the magazine completely into the bearing; e) the coupling of the extractor (e) and the slide cover (c) by a centrifugal chain (k ^l ) with pin (k ² ), which centrifugal chain is guided at one end in an arc (of the lever pin k *) and at the other end against one Pin (k ³ ) is pressed and during its entire movement with the pin (k ² ) in a slot (e ² ) of the extractor (e) and during the joint movements for coupling both parts at the same time in a cutout (c ² , Fig. 9) a groove of the slide cover (c) engages; f) the uncoupling of the extractor (e) and slide cover (c) by lifting the pin ^{fk 2} ) of the centrifugal chain out of a cutout (c ' ² , Fig. 9) in the slide cover by means of the circular movement of the pin (k ⁱ ) with counter-support from the other End of the slinger chain against a pin (k ^% ) on the extractor; g) the movement of the extractor and slide cover or the centrifugal chain fk ¹ ) by means of a centrifuge (kj, which is driven by a double-legged armature (m) that moves back and forth and is alternately up and down; h) the drive of the armature (m ) specified under g) by a lever fe) which is rotatably mounted on the valve shaft (h ^l ) and swings back and forth by the spring clamp fq ^1); i) the device of the anchor fm ) specified under g) for moving the slingshot fk), consisting partly in a nose fm ¹ ) on the upper leg, which when the anchor retreats with the aid of a surface fm *) ■ on the lower leg behind a pin fk ^z ) above the axis fk ⁸ ) the sling catches and it snaps backwards, on the other hand in two noses (m ^ m ^h ) on the lower leg, which when the anchor retracts (after lifting the nose m ^l ) by means of an inclined surface fm ^% ) and a fixed pin (y) one after the other behind pegs (k ^ k ¹ ) below the axis fk ^s ) and snap the sling forward in two jerky movements; k) the advancement of the armature lever (I) simultaneously through the spring clamp (q ^] ) and the preceding rigid whole, whereby a longer usable gear of the armature fm) is achieved; 1) a spring clamp fq ¹ ), which on the one hand presses against the rigid whole and on the other hand is connected to a spring (q), which tensions the spring when the rigid whole retreats and, after the shot has been fired, the rigid whole under the pressure of the tensioning spring in the initial position pushes forward; m) a nose fa ' ^a ) on the rigid whole, which when it falls back turns the cock (h) back, cocks it and when moving again makes room for the cock to be propelled; n) an embodiment of the under ι. specified locking wedge (b), in which in the same a resilient firing pin ff) is attached, against which the firing pin (d) strikes; o) an intermediate ^{pawl for l} r ² ) on the trigger fr) to operate the trigger pawl (s) by means of the upright part fr ¹ ), which when the trigger is pulled further through the horizontal part , which is influenced by a resistance in the lock housing, fr " ¹ ) is moved backwards, so that the trigger pawl fn) can jump into the cock notch under the action of a spring fr " ¹ ); p) the setting of the trigger in the trigger position by means of the reaction of the spring fr ' ² ) and the bolt fr ³ ) pressed against the slope of the box wall (at w ^s ); q) a long striking spring attached to the stock of the weapon fo) with a support fo ¹ ) that transmits the spring action against the hammer: 3. The replacement of the springs specified under 2 h) and 2 g) fq 0) a) by under the action of counter-pressure springs lever fu, Fig. 16) or b) by stacked levers fu) with an interposed double-acting spring while changing the tapping chain into a tapping chain, or c) by a spiral spring (Fig. 17, 18), which from the front through the regression of the rigid whole, from behind by means of suitable intermediate parts in the Tensioning of the tap is tightened by its turning movement · and their power in the process of the rigid whole in front to operate the loading mechanism, at the rear to jump the tap for the ignition. 4. An embodiment of the control specified under 2 a) and 2 b), in which the rear part of the locking lever (i) is pushed upwards by a lever ft) rotated from the valve shaft by means of an intermediate member (P) and thus the locking wedge is opened will while at the end. the decrease in the rigid whole of the locking wedge is lifted into the locked position by attaching a nose fi ⁷ ) of the locking lever to a fixed pin fy) in the lock case. In addition 3 sheets of drawings.