DE537582C - Automatic firearm with a short receding barrel - Google Patents

Description

The invention relates to an automatic firearm, in which the shutter moving in a straight line is replaced by a short receding one Barrel is operated directly by means of a lever.

It has been shown in the known locking mechanisms of this type that the required Leverage when the barrel only makes a short movement (10 to 25 mm) may, with the modern cartridges up to 83 mm and more long, already be so large, that the locking mechanism no longer works properly when the lock is opened.

The present invention now remedies this drawback by the fact that by the short Large leverage due to running movement is only effective when closing the lock comes, but not when it is opened. For this purpose the shutter when opening directly through the barrel, but backwards on a long lever arm but when it is closed, it is inevitably completely closed with a greater leverage ratio.

In the drawing are some embodiments of the automatic firearm after Invention shown schematically in its essential parts.

Fig. Ι and 2 show the first embodiment with the closure closed and open in vertical longitudinal section.

Fig. 3 and 4 show the same embodiment, but with positive locking ventilation, also in vertical longitudinal section.

Fig. 5 is the second, ■

Fig. 6 and 7 the third,

Fig. 8 and 9 the fourth,

Fig. 10 the fifth embodiment in vertical longitudinal sections. 4p

Figs. 11 and 12 show the sixth embodiment in vertical or horizontal longitudinal section.

The barrel 1 (Fig. 1) is 30 µm in the housing a short distance movably guided. On the barrel ι the barrel extension 2 is attached, which extends below the closure 3 usually behind the latter. Its back End stands with a behind the shutter 3 in the lower part of the housing 30 rotatably mounted Lever 4 in connection .. The shutter 3 can be with the barrel 1 or with his Approach 2 can be locked in a known manner. In the drawing is this lock For the sake of simplicity and clarity, shown as a bolt 7, which of the spring 8 is pressed into the locking position. During the return movement of the barrel the head of the bolt 7 slides onto the correspondingly beveled surface 31 of the housing 30, whereby the unlocking of the lock takes place inevitably. The compression spring 10 strives to keep the barrel 1 always in the front position by means of its attachment 2

to press. The lever 4 is supported with its rounded head on the rear end face of the lock 3. In the housing 30, the pawl 5 is still rotatably mounted, which below the effect of the compression spring 6 is available.

The mode of operation of this arrangement is as follows:

The retreating barrel pivots the lever 4 into its rear through its shoulder 2 Position (Fig. 2), whereby the lock 3 is not influenced by the lever 4. Once the Run ι arrives with its approach 2 in its rear position, he is of the pawl 5, whose tooth is pushed by the compression spring 6 into a corresponding incision in the barrel attachment is pressed. In the meantime, the lock 3 has been unlocked by pressing the bolt 7 through the beveled surface 31 of the housing 30 from that formed in the closure Locking catch has been raised. As soon as the barrel has finished its return movement, the shutter 3 set in motion can continue its return movement freely, the empty cartridge case being ejected in the usual manner. The one in his The rearmost position arrived shutter 3 presses on the arm standing upwards Pawl 5, lifts the tooth of the same from the detent of the barrel extension 2, so that now the compression spring advances the barrel including barrel extension 2. Here the lever 4 comes into effect by being rounded head advances the shutter 3 into the closed position (Fig. 1), since the Head of the lever 4 travels a longer distance than the corresponding lever translation Run with the approach.

So that the unlocked lock itself at

Clamping of the cartridge case can safely separate from the barrel, the release lever 9 (Fig. 3) known training can be used, which in the return movement of the Barrel with his lower arm against the stop 9 '(Fig. 4) and with his upper arm loosens the lock 3 and pushes it back.

In some cases it is desirable that the barrel approach 2 is not permanently articulated with the Lever 4 is connected. In such a case, the lever 4 (Fig. 5) has a cam 13 on which the end face of the barrel attachment 2 rests during the return movement of the barrel. The compression spring 10 is attached to the front of the barrel extension 2 and in this embodiment has no influence on the lever 4, which is designed here with two arms; on his lower arm engages the tension spring 17, which strives to the lever 4 with his, upper Keep arm in the forward position. When the barrel 1 moves back, the barrel attachment hits 2 the lever 4 in its rear, dash-dotted line shown position. The closure is opened in the same Way as in the first embodiment. The lever 4 is in its rear position held by the standing under the action of the compression spring 6 pawl 5, which is appropriate engages in tooth 22 of lever 4. After completing his return movement, it snaps the barrel 1 under the action of the compression spring 10 in its forward position. During this advance the wart 19 of the barrel extension 2 runs on the front arm 18 of the expedient the axis of the lever 4 rotatably mounted two-armed lever and presses the arm 18 downward. As a result, the rear arm 20 of this lever is raised and pivoted the pawl 5 by means of its arm 5 'against the action of the compression spring 6 in the open position, so that the lever 4 is released will. As a result, the lever 4 folds forward under the action of its tension spring 17 and returns the shutter 3 from the open to the closed position.

The release of the pawl 5 could also take place here by the lock itself, in which Fall, the pawl 5 receives an arm protruding upwards into the track of the lock and the lever 18, 20 is omitted.

The lever 4 itself can also be used to release the lock. Go to this Purpose is the lever 4 (Fig. 6) articulated with the lock, z. B. by means of a sliding pin or a tie rod. When the barrel moves back, the Bolt 3 unlocked (Fig. 7), and only then does the rear surface 11 of the barrel attachment 2 strike on the cam 13 of the lever 4 and thereby lifts the lock. This cam sits here on a relatively long lever arm, so that the lever 4 by the short running movement not pushed all the way back into its rear position, but only on part of it Career is inevitably moved. This middle position of the lever 4 is shown in Fig. 7 with indicated in full lines. Here the barrel approach 2 is held by the pawl 5, the Lever 4, however, continues its return movement freely as a result of its activity until it reaches its rear Position (dash-dotted lines) is reached. In this embodiment, the Pawl 5 released again from the lock, whereupon the barrel under the action of its compression spring 10 snaps forward. Here, however, the tooth 12 of the barrel attachment 2 abuts against the Cam 14 of lever 4; the cam 14 sits on a correspondingly short lever arm, see above that the lever 4 is pivoted completely into its forward position by the forward movement of the barrel, the shutter is closed.

In another embodiment (Fig. 8) the end part of the barrel attachment is with the detent for the tooth of the pawl 5 and with the tooth 12

placed as an independent part under the action of a special compression spring 16. The approach 2 hits the cam 13 of the lever 4 and at the same time during the return movement the head 15 of the compression spring 16 and presses it together until the pawl 5 the tooth 24 of the Head 15 detected and thus holds the head in the rear position (Fig. 9). The run then goes forward again under the action of the compression spring 10. In the meantime got there the lever 4 and with it again by a sliding pin or a pull rod connected lock 3 together in their rear position, the pawl 5 for example is actuated again by the lock, so that the pawl 5 the head 15 of the spring 16 releases. Now this spring can expand and the tooth 12 the lever 4 in its front Swivel position, d. H. close the lock.

Of course, the release of the pawl 5 could also be done here instead of the lock done by the run itself, e.g. B. similar to that shown in Fig. 5.

In a further embodiment (FIG. 10), the lever 4 is mounted on the barrel attachment 2 and when the barrel moves back, the breech itself moves it into the rear Position (dash-dotted lines) pivoted.

The retention and release of the barrel attachment 2 takes place as in the first embodiment by the lock. But here is the one Lever 4 designed with two arms. The lower, short arm 41 strikes when the Run against a stop of the housing 30, so that the longer arm of the lever 4 closes the lock advances to the closed position. If necessary, the release lever can also be used here 9 (Fig. 3) are used.

In many cases it is desirable to have the length of the entire locking mechanism as short as only possible to hold.

This can be achieved, for example, that the lever 4 (Fig. 11) is not on the rear end face or on the rear part of the breech, but on one further forward located part of the same acts. But then the lever 4 and the lower, horizontal one must Arm of the barrel attachment 2 are attached so that the space under the lock for the magazine remains free. For this purpose, the horizontal arm of the barrel approach 2, the Lever 4 and the pull rod 42, which connects the lever 4 to the lock 3, on one side the breech and the magazine 43 (Fig. 12). The relatively long axis of rotation of the lever 4 is behind the magazine 43 continuously in the two side housing walls stored. The long axis of rotation makes it possible to keep the body of the lever thin and to be able to guide it laterally very precisely.

In certain embodiments, especially those according to Fig. 6, 7, 8, 9 and 11, can with the lever 4 any straight pull lock of known construction is also connected because in these embodiments the lever 4 of the barrel 1 inevitably partially is pivoted backwards, which movement in the simplest way for unlocking and acceleration a straight pull lock can be made usable. The lever 4 then also serves as a release lever.

The characteristics of the present invention can also be used within their structural and functional limits can be freely modified without thereby also changing the invention itself would suffer.

So z. B. the running approach 2 in all embodiments by arranging a A joint or a cam (stop) act on the lever 4.

The lever 4 can be attached not only behind, but also next to and even in front of the lock will.

In the embodiment according to Figs. 8 and 9, the compression spring head can also be by means of teeth act on the lever 4, which then has a toothed segment that can be moved backwards loosely is to be provided.

Claims (8)

Patent claims: 1. Automatic firearm with a briefly receding barrel and moving in a straight line Lock which is operated by the barrel by means of a lever, characterized in that the barrel the The lock opens without leverage or with a lower leverage, than with which the inevitable closing of the shutter takes place. 2. embodiment of the automatic firearm according to claim 1, characterized in that that the barrel attachment is articulated to a one-armed lever 4 rotatably mounted in the housing of the weapon and is under the action of a compression spring, the lever 4 with its head at the rear end face of the closure Opening touches loosely, but when closing the shutter inevitably advances after the lock in its rear position has a spring-loaded latch, which the barrel approach held in the rear position, has triggered. 3. Embodiment of the automatic firearm according to claim 1, characterized that the barrel extension under the action of a compression spring with its rear end face during the return movement acts on a cam of a lever 4 rotatably mounted in the housing of the weapon, which has a tooth in which a pawl in the rear position of the lever engages, one formed on the barrel extension During the forward movement of the barrel, the wart influences one arm of a rotatably mounted two-armed lever (18, 20) in such a way that that the other arm triggers the pawl, so that a suitable spring the lever 4 in its front position and thereby can move the shutter to the closed position. 4. embodiment of the automatic firearm according to claim 1, characterized in that that the running under the action of a compression spring approach in the return movement on a cam of a one-armed lever rotatably mounted in the housing, but on another during the forward movement Cam this lever acts, with the former cam acting on a two to four times longer lever arm is attached than the latter and the lever with the lock is connected by a sliding pin or a pull rod and a pawl, which the The barrel attachment in its rear position is triggered by the breech itself. 5. embodiment of the automatic firearm according to claim 1 and 4, characterized characterized that in place of that part of the barrel approach, which the on the A cam attached to the shorter lever arm is actuated and held directly by the pawl, an independent part (Spring head) is applied under the action of a special compression spring. 6. embodiment of the automatic firearm according to claim 1 and 2, characterized characterized in that the lever (4) has two arms and is mounted in the barrel attachment is and that its shorter arm hits a fixed stop as the barrel moves forward, so that the longer arm the Closure closes. 7. embodiment of the automatic firearm according to claim 1 and 4, characterized characterized in that in order to achieve a compact locking mechanism, the lower arm of the barrel attachment, the lever (4) and a tie rod connecting the latter to the front part of the closure are arranged on one side of the magazine, but the lever (4) behind the magazine in the two side walls of the housing is mounted on a long axis. 8. embodiment of the automatic firearm according to claim 1 and 5, characterized characterized in that the release of the pawl through the preceding barrel approach takes place directly or by means of a lever (18, 20). 1 sheet of drawings