DE2303435A1 - DEVICE FOR A CARTRIDGE CHAMBER IN A CARTRIDGE OPERATED TOOL (GUN) - Google Patents

Description

Case 432 A-8

Gimnebo Bruks Aktiebolag, Gunnebobruk, Sweden

Device for a cartridge chamber in a cartridge-operated Tool

The invention relates to the arrangement of a cartridge chamber in a cartridge-operated tool, which is expediently an automatic cartridge case ejector which consists of a spring-loaded extension arm. So that it works properly and does not slip past the flange of the cartridge case, it is important that the cartridge from those in contact with it Surfaces of the cartridge chamber is released as easily as possible. Cartridge cases are common provided with a certain surface coating, which is due to the heat of combustion and the gas pressure tends to adhere to the interior surfaces of the cartridge chamber and thus impede the extraction of the cartridge case. The risk of sticking is, of course, at the muzzle of the cartridge case, where the most violent deformation

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and the greatest temperature rise occurs, the greatest.

Another disadvantage of certain cartridge chambers and short barrels is that the gas development and the opening of the cartridge case occurs so suddenly that there is insufficient time for complete combustion of the powder remains and the powder is rather blown out, resulting in soot problems and reduced effectiveness leads.

The invention is based on the object of remedying these disadvantages by means of a special design of the cartridge chamber to eliminate. According to the invention, the rear part of the cartridge chamber has an inner diameter which is approximately is equal to the outer diameter of the cartridge case, while approximately at the point at which the constriction of the The cartridge begins to change in diameter by strangling the case jacket, so that a tapered one Hole is formed. This hole then goes back into the shape of a cylindrical hole with a smaller diameter through which the gases are passed. Diose's tapered hole prevents the cartridge case is completely expanded under the influence of gas pressure, so that the contact area between the choked Area of the cartridge case and the inner surface of the cartridge chamber is significantly reduced, whereby

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the tendency to stick is also largely reduced. This tendency is further reduced by that the portion with tapered diameter ends so that the uppermost part of the choked jacket the cartridge case over the at the transition between the tapered and the cylindrical hole section is outbid. '' Due to the narrowed exit diameter the gas flow is also delayed to a certain extent and better combustion of the powder is achieved.

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An embodiment of the invention is based on a complete shooting apparatus in the drawing shown.

Fig. 1 shows the complete shooting apparatus;

Fig. 2 shows at what point within the A cartridge case ejector is arranged;

Figures 3 and 4 are two illustrations for illustrative purposes of the cartridge case ejector in two different functional divisions;

5 and 6 show a locking arrangement for fixing a nail with a guide washer in two different ways Division of functions;

Fig. 7f, 8 and 9 show a muzzle part with which it

surrounding shell part of the shooting apparatus;

Figures 10 and 11 show the front end of the shooting apparatus. rates;

Fig. 12 and 13 show a cartridge chamber with a Cartridge for the apparatus before or after the cartridge is ignited;

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FIGS. 1h and 15 show the trigger mechanism in two different puncture divisions;

16 and 17 show the interaction between a guide pin and a groove in the barrel of the The shooting apparatus in which the latter intervenes in two different relative positions;

Figures 18, 19 and 20 show more fully the interaction between the pin of Figures 16 and 16 17 and a firing pin in three different relative positions; and

Fig. 21 shows the actuation of the pen in the transverse direction.

1 and 2, 1 denotes a tool housing part made in one piece from metal, this one Part has a handle 2, from which an axially forwardly directed part 3 protrudes, at the top thereof Guide part 4 with a more or less cylindrical hole for guiding a barrel 68 is arranged in such a way is that the latter can move axially along the hole. To the right of the handle 2 is a housing 6 for a trigger mechanism 7 is arranged.

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The housing is provided with an axial hole that is axial to the hole in the guide part 4. The part 8 between the guide part 4 and the housing 6 is designed in the manner of a cradle or trough. A cross section through this trough shows that the trough is semicircular and that the inner envelope surface of the trough is a connecting envelope surface between the inner one Enveloping surface of the guide part 4 and the inner enveloping surface of the housing 6 forms. In the guide part 4, the part 8 and the housing 6 is a cylindrical tube-shaped Lining 9 ^ arranged, cut away on part 8 is, so that within the part 8 a cradle-shaped or trough-shaped lining is formed. At the At the front end, the cylindrical chuck has an outwardly directed radial flange 10. The back end of the cylindrical chuck protrudes outside the housing 6. The protruding part is with a External thread 11 provided. On the thread 11 is a Screwed on cap 12 with internal thread 13, the handle part 2 is equipped at its rear end with a continuous link i4, which for example can be made of an elastic material such as rubber or plastic. The link 14 has

12 such a dimension that it is also the cap and part of the outer surface of the housing 6 is covered. The elastic material has the function of being a part

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to absorb the recoil force. The continuous link 14 made of elastic material is attached to the handle 2 by means of a head screw 15 screwed on.

The firing mechanism consists of a cylindrical unit 16. The cylindrical unit 16 has a transverse hole 17. A bolt 18 is inserted into the hole 17. Between the inner end of the bolt and the bottom of the L _o ches is a spring 19 is arranged. The bolt 18 has a transversely directed hole 20 into which the front end of a firing pin member 21 is inserted. At the top of the hole 20 is a lock for the firing pin member 21, which is released when the bolt is moved back. At its front end carries the firing pin member 21 has a firing pin 22, the left side of the hole 20 is bounded by a wall 23 which is provided with a hole 24 of suitable size, so that the S _c hlagbolzen 22 in the hole is insertable, that on the left side of the wall 23 a piece of the same protrudes outward. At the lower end, the bolt 18 has a nose 25 which slides in an axial groove 26 in the cylindrical putter 9. In this way, thanks to the nose 25 in the chuck 9, the cylindrical unit 16 can only move in the longitudinal direction of the groove 26 between the ends of the same. the

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cylindrical unit Io is recessed in a part of the same so that a transverse contact surface 27 is formed. The recessed part is designed in the manner of a cylinder and is designated by 28. One end of a helical spring 29 is at the loading

contact surface 27 supported. The other end of the pen

acts against the transverse splash 30 of a link forming the flange and a tubular part 31 The tubular part 31 has a contact surface The tubular part 31 forms a channel for the firing pin member 21, and this firing pin member has a flange 33 at its rear end »Which can be brought to rest on the contact surface 32. The firing pin member 21 is equipped with a spring 3k , one end of which is supported on the left end of the firing pin member 21 and the other end of which rests on the inner wall of the housing 12. The tubular part 31 "is surrounded by three rings 35» 36 and 37 which are supported against the transverse flange 30 and the bottom of the cap 12. These three rings are made of elastic material and are suitable for damping the recoil forces.

At the upper end of the handle 2 is an axial, more or less rectangular through hole38 arranged. The hole 38 opens into a conventional one Discharge opening 39 »The axial groove 26 goes from the upper part

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the through hole 38 from. A two-armed lever 41 is arranged in the groove (FIGS. 14 and 15) one end 40 is movable in the groove 26 such that a nose 42, which is arranged at the top of one end 40, can interact with the nose 25 of the bolt 18. The two-armed lever 41 is arranged around one in the handle part 2 Axis 43 pivotably arranged. The other end 44 of the two-armed lever 4l carries by means of an axis a two-armed angle lever 46, one arm 47 more or less downward and its other Arm 48 is directed more or less horizontally. Of the horizontal arm 48 is arranged in an axial groove 49, which runs through the two-armed lever 41. The downward arm 47 has an oval groove or hole 50. A pin protrudes through this hole.-51. The pin is arranged in a trigger 52. The trigger is in the through Hole 38 is movable in the axial direction and has a more ojier less vertical hole 53 for the downward facing Arm 47. At the rear end the trigger 53 has a. Hole 54, which is directed more or less axially. One end of a coil spring 55 is at the bottom of the Hole 54 supported, and the other end of the spring is at the bottom of one located in the continuous member 14 Hole 56 supported. The coil spring ensures that the trigger is always in its front Position while at the same time the two-armed

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Lever 41 is pushed into its lower position.

In the cylindrical unit (Fig. 2) a groove 57 is cut out of the envelope surface, which has an axial direction * so that an arm 58 can be inserted into the groove 57. Two arms 59 and 60 extend from the ends of arm 58 (FIGS. 3 and k) . The last-mentioned two arms are directed transversely with respect to the arm 58 and are also directed essentially against the central axis of the cylindrical unit 16. At the front end, the arm 60 is formed into a tip 61 which is intended to interact with a flange 62 of a cartridge case 63. A cutout 6h is provided at the upper end of the arm 59-. One end of the helical spring 29 rests on this cutout. The arm 59 penetrates into a groove 65 which is formed in the firing pin member 21. The arm 59 is formed into a point 66 which is in contact with the front transverse wall 67 of the groove 65, so that the helical spring 29 exerts a forward direction on the arm 58 and so that the point 61 is in front of the front of the flange 62 can snap into place.

A barrel 68 is arranged so that it is axially displaceable in the cylindrical chuck 9 (Fig. 1).-Am At the rear end, the barrel has a chamber 69, the front end of which enters a bore 70 of the barrel

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transforms. At the front end of the barrel 68 an internal thread 71 is provided, which cooperates with an external thread 72 of a muzzle part 73, the bore 7 ^ of which has a diameter substantially corresponding to the head 100 of a rodent 99. At the front end of the mouth part 73 is drilled open, so that a bore 75 is formed with a larger diameter, which corresponds to the diameter of a guide disc 101 for the nail 99 (FIGS. 5 and 6). In the bore 70 a firing pin is arranged, which has a rear part 76, the diameter of which corresponds to the diameter 70 of the bore, and a front part 77 with a diameter corresponding to the bore 7h is always inserted in the bore 1 [k . The barrel 68 has a continuous axial groove 78 which is arranged in a vertical plane through the barrel 68. A spring-actuated nose 79 (FIGS. 1 and 18) is inserted into the groove, which limits the movement of the barrel 68 to the left (in the figures), so that the nose 79 is in one position with the rear end wall 80 of the groove 78 may be in contact. In this position, the rear end of the barrel 68 coincides mainly with the rear end of the guide part k . The nose 79 is also inserted so deeply into the bore 70 that it can be brought into contact with the more or less transverse collar surface 81 of the rear part 76. In the front end of the

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Bore 70 and a ring 82 made of elastic material is arranged in front of the nose 79, and in front of this * there is a flange-like part 83 of a tubular part 8h in contact with the rear end of the ring. The tubular part 84 has a groove 85 for the nose, 79. The barrel ¹ JO has a step in its underside on the groove 78, so that the barrel 70, when the nose is completely inserted into it, moves back
can move forward but not forward.

In the forward part just below the Groove 78 in the barrel 68 an axial groove 86 is arranged, which opens into a pocket 87. Above the groove 86, the chuck 9 is equipped with a continuous groove 86A, a number of through holes can be provided in their place. The pocket 87 is with a side cover or the like. lockable, for example is attached to the pivot bearing 88. The pocket

ι
is also shown in Figs. The chuck 9 has a collar 89 of more or less rectangular cross-section. "Between the outer envelope surface, to the left of the collar, there is an annular space 90 which is delimited by the inner envelope surface of the guide part h . Around the outer envelope surface of the chuck are on-, this extending in the longitudinal direction of the axial ribs 91 provided from a point

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go out on the putter between the ends h of the guide part. The axial ribs extend to the front end of the guide part 4. The upper sides of the axial ribs are in contact with the inner envelope surface of the guide part 4. On this

In the guide part k , the feed receives a number of axial channels on the lateral surface, in which the smoke gases from the shooting apparatus are distributed. When the flange 10 is at a certain distance from the front end of the guide part h , a gas outlet opening 92 is formed for the channels. A space corresponding to the space 90 can be arranged between the front edge of the ribs 91 and this outlet opening.

The mouth part 73 has a relatively shallow shell recess 93 (FIGS. 5 and 6). In the left part of the Muzzle part that is not recessed is located a light axial groove 94, which extends from the recess 93 extends to the left. In the front end of this groove, i.

y -

at its left end there is a radial hole 95 »in which a ball 9 & is inserted. The lower end of the hole is narrowed slightly so that the ball does not leave the hole 95 and enter the bore part 75 can. A jacket tape 97 is placed around the opening part 73 at the recess 93. From one edge .this Ribbon extends a tongue 98 along the axial groove

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to the left. The tongue then covers the hole 95 »so that the ball cannot move upwards. The band 97 and the tongue 98 are made of such a material that the tongue tends to push the ball 96 downwards at all times. The ball 96 serves as a locking ball in that it snaps aside when a nail with a nail head 100 and a guide washer is inserted into the bores 74 and 75 arranged one behind the other. When the ball is snapped aside, the nail 99 is retained in the bore. The advantage of this design in comparison with other designs is that the recess in the front part of the mouth part 73 is considerably smaller, which gives the front part greater strength. If other constructions are used to hold the ball back, much larger recesses must be provided. The described arrangement for retaining the ball 96 can, of course, be used generally in the case of muzzle parts for any bolt gun.

The mouth part 73 is surrounded by a collar 102, which consists of a front part 103 and a rear part (also shown in FIGS. 7 to 9). The edge of the rear end 104 is intended to be in contact with the flange 10. A certain section of the front

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Part of the mouth part 73 then jumps forward over the front edge of the part 103. To unlock the shooting device, the front end of the muzzle part must be pressed inwards so that its front part coincides with the front edge of the part 103. The part 1 Ok has two inwardly directed radial flange surfaces 105 and 106 on its inner envelope surface. These flanges have two mutually facing and parallel surfaces. A cut through the flanges results in an inner hole with two straight parallel and two curved sides facing one another. A cube-shaped or block-shaped part 107 is provided on the mouth part 73, which, in front of the external thread 72, forms a section protruding over the lateral surface. This cube-shaped part has four flat axial surfaces 108, 109, 110 and 111. The surfaces 108 and 110 are at a distance from one another which corresponds essentially to the distance between the inner edges of the flange parts 105 and 106. The distance between surfaces 109 and 111 is the same. At the left end of the surfaces 111 and 109, two curved flanges 112 and 113 are arranged, the curvature of which then corresponds essentially to the inner diameter of the part 104. When the mouth part 73 is inserted into the collar 102, the flanges 112 and J.13 must assume the position shown in FIG.

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When the flanges 112 and 113 have passed the flanges 105 and 106 and the cube-shaped portion 107 is to the left of the downward facing flanges 106 and 105, they can be rotated 90 degrees. The mouth part 73 can then be moved from the position in which the flanges 112 and 113 rest against the flanges 105 and 106 into a position in which the former flanges rest against the contact surface 114. Thanks to the presence of the flanges ^1, 105 and 106 and the surfaces 108 to 1-11, it is possible, with the aid of the collar 102, to screw the muzzle part 73 onto the barrel 68. The collar 102 has three functions in this way: it serves as a cover, as a stop member which determines how far the barrel 68 must be moved backwards so that the safety of the shooting apparatus is released, and as a member with the help of which the muzzle part 73 can be unscrewed from the barrel 68 or screwed onto it. The collar can neither S _c move hießopparat,?. Still unlock it. In its rearmost position, the collar leaves a part of the front end of the mouth part 73 uncovered. This part is'"

however, not long enough for the user to grasp it. The collar 102 described can of course at S _c was machinery and apparatus, other genres as the present application find. '.....

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At the rear of the barrel 68 is a cylindrical hole. 115 for the flange 62 of a cartridge 63 with a cylindrical body 117 and a more or less conical and folded front part 118 (FIGS. 12 and 13). The body 117 is inserted into a cylindrical hole 119, the diameter of which corresponds to that of the cylindrical body 117 essentially. To the cylindrical hole. ·; 119 is followed by a conical hole 120 with an inner edge 116 on the left. The conical hole 120 then merges into a hole 121 for the passage of the powder gases developed by the cartridge during the shot. The taper of the conical hole and the length of the cylindrical hole are selected such that, when the cartridge is fired, the front edge acts 122 of the conical hole as a breaking edge, the folded tip 118 in a conical portion 123 and a tubular T _e il 124 In this way, the front part of the cartridge is not jammed in the chamber, nor is any residue deposited in the chamber 69 which could narrow the chamber and cause cartridges later inserted into the chamber to jam the barrel 68 has an axial groove which is radial for the engagement of the arm 60 (FIG. 4). The design of the cartridge chamber described is not limited to use in the present type of shooting apparatus, but rather

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generally applicable.

The trigger mechanism has been largely described above, but not yet sufficiently, and will be discussed in more detail below (Figs. 14 and 15). The horizontal arm 48 can turn into a Move the axial groove 49 in the two-armed lever 41, and its free end can be made to contact the outer casing. surface of the housing 9 to come into contact, the shape of the groove is probably best from Pig. 2 emerges. The nose 25 for the seal 18 has two transversely directed sloping surfaces 125 and 126. The slope of the surfaces is maximum 80. In the longitudinal section, the nose 25 is dovetail-shaped. The nose 42 has an inclined front side surface 127 with an inclination of 80 °, which with the lateral surface 126 of the nose 25 cooperates. That other end 44 of the lever 41 has an inclined contact surface 128 for cooperation with an inclined or beveled surface 129 in the upper left side of the through hole 53 · When the trigger 52 moves to the left becomes, the inclined contact surface 128 slides along the inclined surface 129 'and this has the consequence that the part 44 of the two-armed lever 41 an upward movement and at the same time the end 40 of the lever experiences a downward movement.

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16 shows the front part of the barrel 68 as well as its axial groove 78 and the nose 79 inserted therein. The nose 79 has a more or less rectangular cross-section and a width which essentially corresponds to the width of the groove. Outside the groove 78, the nose merges into a part 130 which cannot enter the groove 78. The part 130 can be given an approximately cylindrical shape, and a recess 131 or 132 is formed in the outer envelope surface of the Lavifes in the barrel 68 on each side of the groove 78. Its function is that of a guide groove for the part I30. The T _e il 130 fits into the groove formed by the recesses 131 and 132. At the left end the groove formed has an inclined transverse wall 13 ^ so that the part 130 can slide upwards on the inclined wall 13 ^ when moving to the left and The groove formed by the recesses 131 and 132 has a transverse wall 133 on the right which is at a right angle to the axis of the barrel Contact with the transverse wall 133 ″ and has no way of sliding onto the envelope surface of the barrel. The contact of the part 130 with the transverse wall 133 can be seen in FIG. Fig. 18 shows how the sub-direction in a guide bush 135 in the transverse _T 130 is disposed bewegfa _ar, which is arranged in a hole in the part 3. The sleeve 135 is in a hole

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Screwed into the tubular chuck 9. On the ground the guide sleeve 135 has an end wall 136. The part 130 goes down into a more or less cylindrical, a peg-forming part 137 passing through a hole

138 is inserted through the end wall 136. This pin-shaped part 137 is mounted with its lower end in a transversely directed handle part 139 and then by means of a shaft 1 kO , which passes through the transversely directed handle part

139 and the pin-shaped part 137 is pushed through. The transversely directed grip part has two grip surfaces 141 and 142, which are each arranged on one side of the shooting apparatus (FIG. 1). The handle part 139 is in contact with the outside of the end wall 136. When one of the handle surfaces 1 41 and 142, for example the handle surface 142, is actuated with the finger 1 43 (FIG. 21), the part 130 becomes so far downward moved that. it leaves the groove formed by the recesses 131 and 132 and, as a result, the barrel 68 has the opportunity to move forward until the nose 79 comes into contact with the end wall 80 of the groove 78. B _e i this actuation is the section of the handle part to the left of

of the shaft 140 as a pivot bearing for a lever formed by the handle part 139. The spring 144 serves zumZurückführen of T _e iles 130 to its original position.

The ring 82 made of elastic material and the tubular

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Part 84 serve to slow the forward movement of the firing pin 77 to be braked when the contact surface 81 with the right end edge of the tubular part 84 (Fig. 20) comes into contact. The tubular part . ". 84 also serves to protect the nose 79 from being destroyed by the

rear part 76 to protect. Parts 82 and 84 have general application in shooting apparatus.

The shooting apparatus described above operates in the following manner. It is assumed that by pressing down the transversely directed handle part 139, the barrel was able to move so far to the left that the nose 79 with the end wall 80 comes into contact. In this state, the firing pin 77 assumes its rear position in the bore 70. A cartridge 63 is now inserted into the chamber 69. The barrel 68 is then moved towards the right end until the part 130 comes into contact with the end wall 133 (FIGS. 17 and 18). A nail 99 with a nail head 100 and with a guide disk 101 is inserted into the bores 74 and 75. So that the nail with the guide disk remains in its position in the bores 74 and 75, the guide disk for the nail must pass the locking ball 96 which is loaded by the tongue 98 so that part of the ball protrudes into the bore 75 . The tongue 98 is spring loaded.

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When the nail is inserted into the bores 7k and 75, the ball 96 is pushed aside by overcoming the spring load as the guide disc passes. When the guide disc has passed, the ball engages again and blocks the movement of the guide disc to the left. In this way, the nail is held in the hole and ready to be fired. Of course, the nail can be inserted first and the cartridge only then.

In the described state, the barrel assumes such a position that the inclined surface I26 of the nose 25 is located in front of the inclined surface 127 of the nose 42. Ignition is therefore not possible. When the rear end of the collar 104 is in contact with the flange 10, the muzzle portion 7k projects beyond the front edge of the collar as far as is necessary for the nose 25 to lie directly under the nose 42, if the front end of the muzzle part 73 is now pressed against the surface into which a nail is to be driven, the barrel 68 is moved to the rear, overcoming the force of the coil springs 29 and 3k, so that the left end face IO3 of the collar 102 with the left end face of the Mouth part coincides. The gun is now ready to fire, that is, the nose 42 is directly under the nose 25. When firing, the

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Trigger 52, overcoming the force of spring 55, moved to the left. The pin 51 of the trigger then moves the arm 47 'and this has the consequence that the arm kj pulls the left part hk of the lever 41 downwards, which in turn means that the right part 40 pushes the bolt 18 so far upwards This means that the striker member 21 is released for movement to the left * and the striker 22 now passes through the hole 2k and the cartridge 63 ignites. Thanks to the lever system, it is sufficient to exert an extremely small amount of force on the trigger 52 to move the bolt 18 which, for safety reasons, is actuated by a very powerful spring. After firing, the spring 55 pushes the trigger 52 to the left. During this movement, the inclined contact surface 128 slides along the inclined surface 129 'and this has the consequence that the lever 41 is rotated in the clockwise direction, so that the nose kZ ceases to interact with the nose 25. The trigger 52 with the arms is now ready for a new fire. When the cartridge 63 is ignited, the hammer 76 and its front part 77 are moved to the left, so that the nail 99 is driven in by means of the part 77. When the hammer moves to the left, it is caught by the collar surface 81 at the right end of the tubular part 84. This catching takes place gently thanks to the elastic ring 82. The detonation gases from the cartridge 63 escape through the groove 78 and the

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lying groove 86A in the lining 9 and the groove 86 in the part 3 to the pocket 87, where the gases experience a loop-shaped downward movement and then flow upwards to the left of the collar 89, whereupon they are in the space between the outer envelope surface of the lining 9 and the inner envelope surface of the guide part h are deflected in the exile axial direction. Because of the presence of the axial ribs, the gases are distributed over a number of channels which open into the space 92 and then led outside. Because of the flow through the channels, the partial flows are phase-shifted with respect to one another. When the gases flow through the pocket 87, the powder residue remains in the pocket. This residue can be removed from the gun by removing the lid from the pouch. Due to the distribution of the lung ¹ * gases on a number of channels formed by ribs is auchein sound damping effect achieved. As well as

'■ i

the collection bag for the residues as well as the soundproofing can be used in general with guns

Find. '

: If the spot zone 03 is ignited, a recoil occurs

I '' '■

on. '- [ Its action is made of elastic by the limb 14

'' ■ j. I.

aterially damped. The recoil is also caused by the

■. Ί ■■■ ι. ■ '■ i
cLrei'Rirjge 35 »36 and 37» also made of elastic material,

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riön-

When the nail is driven in, the handle portion 139 is terminated by a downward exertion of force by means of a finger 143 on one or the other the gripping surfaces 1 41, 142 moved down, and the cylindrical portion 130 is then caused to be formed by the To leave recesses 131 and 132 formed groove. so the barrel 68 can be moved completely to the left until it comes into contact with the end wall 80. This movement the barrel to the left can be achieved in that the barrel either under its own weight downwards is dropped or the barrel is subjected to centrifugal force. The barrel can also be pulled out. at the movement of the barrel to the left, the firing pin in the shooting apparatus through the nose 79 in a fixed position held. This means that while the barrel is moving to the left, a fallatiwerschrift between the Firing pin "and the barrel occurs, so that the firing pin and its bolt return to their original position. When this is done, the gun is reloaded with a cartridge and a nail, and the barrel is returned to the position where the barrel and nail are ready for the new nail to be driven are.

As already mentioned above, the collar 104 is intended to protect the mouth portion 73 and the route to regulate to which the barrel can be moved backwards

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must to the. Unlock the shooting device. The mouth part ' 73 is therefore movable with respect to the collar 102. The collar 102 has the further property that it is used for Screwing the muzzle part 73 on the barrel 68 is used can be, and this is possible as soon as the two opposite flat surfaces of the disk-shaped Part 107 are in contact with the associated surfaces 105 and 106 of the flanges.

When the barrel 68 with the cartridge 63 in the chamber 69 moved rearward against the cylindrical unit 16 is, the arm 60 is moved into an axial groove in the rear end of the barrel, so that the tip 61 in front of the front Lateral surface of the flange 62 disengages. In this state, the flange is with the front transverse surface of the cylindrical unit 16 in contact. If now the When the handle part 139 is actuated, the barrel moves forward the cartridge 63 is retained by the tip 61 and the cartridge case then slides out of the gun or can be removed by hand.

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Claims (3)

Case 432 A-8 patent claims 1.J Cartridge chamber for a cartridge-operated tool for receiving sas-developing cartridges with a choked front end of the cartridge case, in particular in combination with a device for automatically ejecting the cartridge case, with a cylindrical hole (II9) adapted to the cylindrical cover surface of the cartridge case and with a front flange (62 ) the cartridge case, adapted cylindrical hole (115) »characterized in that the cylindrical hole (II3) has a progressively decreasing diameter on its inner part, so that a transition section (12O) from the hole (II9) to. a hole (121) of smaller diameter, the reduction beginning at the rear point (116) at which the strangled portion of the cartridge case of a cartridge fully inserted into the cartridge chamber begins. 2. Cartridge chamber according to claim 1, characterized in that the transition section (12O) of decreasing diameter is shorter than the strangled section of the patrol 0 ^ 53 4/036 2303A35 inner housing it. 3. Cartridge chamber according to claim 1, characterized in that the transition section (12O) of decreasing diameter is completely rejuvenated. -26- 309834/0365