DE2303434A1 - CARTRIDGE OPERATED TOOL (GUN) WITH A POCKET UNDER THE BARREL - Google Patents

Description

Case 4O3 A-8

Gunnebo Bruks Aktiebolag, Gunnebobruk, Sweden

Cartridge-operated tool (gun) with a pocket under the barrel

The invention relates to a cartridge-operated tool for driving nails and screws or the like. In those tools where propulsion cartridges containing an explosive charge are used difficulties arise in terms of deflecting the gases evolved during ignition therein In part, that the sound effect occurring during ignition is reduced as much as possible, and with regard to the elimination of disturbances due to the content of smoke or detonation gases in soot particles.

The invention is based on the object of the sound effect compared to those currently more commercially available cartridge-powered guns to reduce significantly and; to remove in such a way that they -a

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Cause malfunctions.

The soot particles are removed by immediately diverting them from the barrel into a pocket under it, collected there and removed from there when a certain amount has collected there Sound effect is attenuated by the gases, either be directed via the pocket or directly into an annular space between the outer envelope surface of the barrel and the inside of a jacket surrounding it. In this annulus these combustion gases will move axially forwards, i.e. against the muzzle of the cartridge-powered Communicated to the tool. At its front end, the annular space is through to one of the boundary surfaces of the annular space arranged ribs in a number of Axial channels divided. This arrangement of the channels dampens the sound whirling. The channels open at the front end of the jacket. In front of this is at a distance from these! arranged a radial flange, which deflects the gases radially outwards.

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A fünrungsb ei game of the invention is based on of a complete shooting apparatus shown in the drawing.

Fig. 1 shows the complete shooting apparatus;

Pig, 2 shows the position of a cartridge case ejector within the shooting apparatus is arranged;

3 and h are two representations to illustrate 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 Functional positions;

Figs. 7, 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;

12 and 13 show a cartridge chamber with a : Cartridge for the device before or after the cartridge has been ignited;

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14 and 15 show the trigger mechanism in two different functional positions;

16 and 17 show the interaction between one . Guide pin and a groove in the barrel of the gun, in which it engages in two different relative positions;

18, M9 and 20 show more completely the interaction between the pin according to FIGS. 16 and 17 and a firing pin in three different relative positions; and

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

In FIGS. 1 and 2, 1 denotes a tool housing part made in one piece from metal. This part has a handle 2 from which an axially forward part 3 projects, on the top of which a guide part k with a more or less cylindrical hole for guiding a barrel 68 is arranged in such a way that the latter extends axially along the hole can move. A housing 6 for a trigger mechanism 7 is arranged to the right of the handle 2.

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The housing is provided with an axial hole which 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 depression shows that the depression is semicircular and that the inner envelope surface of the depression forms a connecting envelope surface between the inner envelope surface of the guide part k and the inner envelope surface of the housing 6. In the guide part k, the part 8 and the housing 6 there is a cylindrical tube-shaped chuck 9, which is cut away from the part 8 so that a cradle-shaped or trough-shaped chuck is formed within the part 8. At the front end, the cylindrical chuck has a radial flange 10 directed outwards. The rear end of the cylindrical chuck protrudes outside the housing 6. The protruding part is provided with a pure external thread 11. On the thread 11, a cap is screwed 12 with internal thread 13, the G _r iffteil 2 is equipped at its rear end with a continuous member lh, which may be, for example, made of an elastic material such as rubber or plastic. The link Ik has

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

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to absorb the recoil force. The continuous link l4 made of elastic material is attached to the handle 2 by means of a head screw 15 screwed on.

The ignition 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. A spring 19 is positioned between the inner end of the latch and the bottom of the hole. 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 18 is moved back. At its front end 21 transmits the firing pin member comprises a firing pin, the left side of the hole 20 is bounded by a wall 23 which is provided with a hole of suitable size 2k hlagbolzen so that the S _c 22 in the

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Hole can be used in such a way that a piece of the same protrudes outward on the left side of the wall 23. At the At the lower end, the bolt 18 has a nose 25 which slides in an axial groove 26 in the cylindrical chuck 9. In this way, the cylindrical unit 16 can thanks to the nose 25 in the lining 9 only in the longitudinal direction move the groove 26 between the ends thereof. the

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cylindrical unit 16 is recessed in a part thereof in such a way that a transversely directed 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 coil spring 29 is supported on the contact surface 27. The other end of the spring acts against the transverse flange 30 of a link forming the flange and a tubular part 31. The tubular part 31 has a contact surface 32. The tubular part 31 forms a channel for the firing pin member 21, and this firing pin member has at its rear end a flange 33 'which can be brought into contact with the contact surface 32. The firing pin member 21 is equipped with a spring 3 ^, 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'ist surrounded by drex _r rings 35 »36 and 37 against the transverse flange ■ 30 and the bottom of the cap are supported 12th These three rings are made of elastic material and are suitable for dampening the recoil forces.

At the upper end of the handle 2 is an axial, more or less rectangular through hole. 38 arranged. The hole 38 opens into a conventional vent 39. The axial groove 26 extends 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 of which is movable in the groove 26 in such a way that a nose 42, which is arranged at the top at one end 40, with the nose 25 of the bolt 18 can work together. The two-armed lever 41 is arranged pivotably about an axis 43 arranged in the handle part 2. The other end 44 of the two-armed lever 41 carries by means of an axis a two-armed angle lever 46, one arm 47 of which is directed more or less downwards and the other arm 48 of which is directed more or less horizontally. The horizontal arm 48 is arranged in an axial groove 49 which runs through the two-armed lever 41. The downwardly directed arm 47 has an oval groove or a hole 50. A pin ..51 protrudes through this hole. The pen is arranged in a trigger 52. The trigger is movable in the through hole 38 in the axial direction and has a _t more or less vertical hole 53 for the downward arm 47. At the rear end of the trigger 53 has a hole 54 which is more or less directed axially. One end of a coil spring 55 is supported on the bottom of the hole 54, and the other end of the spring is supported on the bottom of a hole 56 arranged in the through member 14. The coil spring ensures

ensuring 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 and has an axial direction so that an arm 58 can be inserted into the groove 57. From the ends of the arm 59 extend two arms 59 void 60 (FIGS. 3 and k) . The latter two arms are directed transversely with respect to the arm 58 and are also directed essentially towards 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 Sk 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 coil spring 29 exerts a forward moment on the arm 58 and so that the point 61 is in front of the front of the flange 62 can click into place.

A barrel 68 is arranged such that it is axially displaceable in the cylindrical chuck 9 (FIG. 1). At the rear end, the barrel has a chamber 69, the front end of which is inserted into 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 essentially corresponding to the head 100 of a nail 99. At the front end is the muzzle part 73 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 (Fig. 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 fk is always inserted in the bore 7 ^. 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 84 in contact with the rear end of the ring. The tubular part 8k has a groove 85 for the nose 79. The barrel 70 has a step in its underside at the groove 78 so that the barrel 70, when the nose is fully inserted therein, can move backwards but not forwards.

In the forward part just below the groove 78 in the barrel 68 there is an axial groove 86 which opens into a pocket 87. Above the groove 86, the putter 9 is equipped with a through groove 86A, in the place of which a number of through holes can be provided. The bag 87 is with a side cover or the like. lockable, which is attached to the pivot bearing 88, for example. The bag is also shown in FIGS. 10 and 11. The lining 9 has a collar 89 of more or less rectangular shape. 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 k that from one point

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on the putter between the ends 4 of the guide part go out. The axial ribs extend to the front end of the guide part 4. The upper sides the axial ribs are in contact with the inner envelope surface of the guide part 4. On this Way receives the chuck in the guide part 4 a number of axial channels on the lateral surface, in which the Smoke gases from the gun are distributed. If the flange 10 is a certain distance from the front The end of the guide part 4 is located, a gas outlet opening 92 formed for the channels. Between the Leading edge of the ribs 91 and this outlet opening a space corresponding to the space 90 may be arranged.

The mouth part 73 has a relatively shallow one Shell recess 93 (Fig. 5 and 6). In the left part of the Muzzle part that is not recessed is located a shallow axial groove 94 protruding from the recess extends to the left. In the front end of this groove, i. at its left end there is a radial hole 95 into which a ball 96 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 mouth part 73 at the recess 93. From one edge of 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 99 with a nail head 100 and a guide washer is inserted into the bores 7 k 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 retain the ball, 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 10k (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 over the Front edge of part 103 also forward. To unlock the shooting device, the front end of the Muzzle part are pressed so far inward that its front part with the front edge of the part coincides. On its inner envelope surface, the part 104 has two inwardly directed radial flanges 105 and 106 on. These flanges have two mutually facing and parallel surfaces. One cut through the flanges results in an inner hole with two straight parallel and two facing curved "» - en pages. At the mouth part 73, a cube-shaped or block-shaped part 107 is provided, which is in front of External thread 72 a vorsprinr over the lateral surface forming section. This cube-shaped part has four flat axial surfaces 108, 109, 110 and 111. The surfaces 108 and 110 are at a distance ; from each other, which is essentially the distance between corresponds to 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 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 portion 73 is inserted into the collar 102, the flanges 112 and 113 must assume the position shown in FIG.

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When the flanges 112 and 113 on the flanges 105 and

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106 have passed and the cube-shaped portion 107 is to the left of the downward flanges 106 and 105, they can be rotated 90 degrees. Subsequently, the mouth part -73 can be moved from the position in which the flanges 112 and 113 are in contact with the flanges 105 and 106 into a position in which the former flanges are in contact with the contact surface 114. Thanks to the presence of the flanges 105 and 106 and the surfaces 108 to 111, 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 hießäpparat b ewe gen, Γ- still unlock it. In its rearmost position, the collar leaves a part of the front end of the mouth part 73 uncovered. However, this part is not long enough for the user to grasp. 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 end of the barrel 68 is a cylindrical hole 115 ULTRASONIC .One for Plansch 62 cartridge 63 with a cylindrical body 117 is ^{a nd} a more or less conically shaped and folded front part 118 (Fig. 12 and I3) are arranged. The body II7 is inserted into a cylindrical hole 119, the diameter of which corresponds to that of the cylindrical body 117 essentially. A conical hole 120 with an inner edge 116 adjoins the cylindrical hole 119 on the left. The conical hole 120 then goes into a hole 121 for the _y ¥ pus line developed by the cartridge during firing powder gases through. 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 gefä & ended 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 jamming of cartridges later inserted into the chamber. In the area of the chamber 69 the barrel has 68 an axial groove which lies radially 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.

A large part of the trigger mechanism has been described above, but not sufficiently, and will be discussed in more detail below (FIGS. 14 and 15). The horizontal arm 48 can move in an axial groove k $ in the two-armed lever 4i, and its free end can be made to come into contact with the outer envelope surface of the housing 9. The shape of the groove is probably best shown in FIG emerged. The nose 25 for the bolt 18 has two transversely directed inclined surfaces 125 and 126. The inclination of the surfaces is 80 at most. In the longitudinal section the nose 25 is swallow-tail-shaped. The nose k2 has an inclined front side surface 127 with an inclination of 80, which cooperates with the side surface 126 of the nose 25. The other end kk 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 is moved to the left, the inclined contact surface 128 slides along the inclined surface 129 » and this has the consequence that the part kh of the two-armed lever hl experiences 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 ridge 130 which cannot enter the groove 78. The part 130 can have an approximately cylindrical shape", and in the barrel 68 a recess 131 or a recess is provided on each side of the groove 78 132 formed in the outer envelope surface of the barrel. Its function is that of a guide groove for part I30. The T _e il 130 thus fits into the recesses formed by the I3I and 132 groove. 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 thus comes into direct contact with the outer envelope surface of the barrel. 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. Thus, if the part 130 is moved to the right, it comes into contact with the transverse wall 133 and has no possibility 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. 18 shows how the part 130 is arranged movably in the transverse direction in a guide bush 135 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 peg-shaped part 137 is at its lower end "in a transverse handle part 139 and then mounted by means of a shaft i4O passing through the transverse handle part

139 and the pin-shaped part 137 is tucked through. The transversely directed grip part has two grip surfaces 141 and i42, which are arranged on one side of the shooting apparatus each (Fig. I). The handle portion 139 is in contact with the outside of the end wall I36. When one of the gripping surfaces 1 4i and 142, for example the gripping surface 142, is actuated with the finger 143 (FIG. 21), the part 130 is moved downward so far 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 of this operation is the portion of the handle portion to the left of the shaft as a pivot bearing for a 14O formed by the handle part 139 lever. 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 8k serve to brake the forward movement of the firing pin 77 when the contact surface 81 comes into contact with the right end edge of the tubular part 8k (FIG. 20). The tubular part "." 84 also serves to protect the nose 79 from being destroyed by the rear part 76. The parts 82 and 8k can be used generally in shooting apparatus.

The shooting apparatus described above works in the fol- I gender ¥ eise. It is assumed that by low pressure j ken of the transverse handle part 139 the barrel the

I had the opportunity to move so far to the left that the nose 79 comes into contact with the end wall 80. In this state, the striker 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 washer 101 is inserted into the bores 7k and 75. So that the nail with the guide— ^! disc in the bores 7 ^ and 75 remains in its position, the guide disc 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 Th and 75, the ball 96 is pushed aside as the guide disc passes by overcoming the spring load. When de 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 bore and ready for shooting. 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 126 of the nose 25 is located in front of the inclined surface 127 of the nose ^ 2. Ignition is therefore not possible. When the rear end of the collar 104 is in contact with the flange 10, the muzzle part 7 ^ projects beyond the front edge of the collar as far as is necessary for the nose 25 to lie directly under the nose k2. When 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 3h , so that the left end face 103 of the collar 102 with the left face of the muzzle part coincides. The shooting machine is now ready to fire, ie the nose h2 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 kj _t and this has the consequence that the arm kj pulls the left part kk of the lever 41 downwards, which in turn has the consequence that the right part kO the bolt 18 so far upwards presses that the striker member is released for movement to the left "and the striker 22 now passes through the hole Zk and 'ignites the cartridge 63. Thanks to the lever system, an" extremely low force "on the trigger 52 is sufficient to move the bolt 18 to move, which is actuated by a very strong spring for safety reasons. After firing, the spring 55 pushes the trigger 52 to the left, with this movement the inclined contact surface 128 slides along the inclined surface 129, and this has the consequence that the lever ^ 1 is rotated clockwise so that the nose 42 stops, to cooperate with the nose 25. The trigger 52 with the arms is now ready to fire again. When the cartridge 63 is ignited, the percussion hammer 76 and its front part 77 are moved to the left, so that the nail 99 is driven in by means of part 77. When the percussion hammer is moved to the left, it is penetrated by the collar surface 8i at the right end of the tubular part 8k collected. This collection is done thanks to the elastic ring 82 gently. the detonation gases of the cartridge 63 to escape through the groove 78 and therebelow

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lying groove 86A in the putter 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 chuck 9 and the inner envelope surface of the guide part k are deflected in an 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 to the outside. Because of the flow through the * channels, the partial flows are out of phase with one another. When the gases flow through the pocket 87, the powder residues remain in the pocket. This residue can be removed from the gun by removing the lid from the pouch. By distributing the gases over a number of channels formed by ribs, a sound dampening effect is also achieved. Both the collection bag for the residues and the soundproofing can be used in general with shooting apparatus.

When the cartridge 63 is fired, recoil occurs. Its effect is made by the member 14 from elastic Material steamed. The recoil is also ensured by the three rings 35, 36 and 37, also made of elastic material, muffled.

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When the nail is driven in, the transverse direction is tete handle part 139 by exerting a downward force by means of a pinger 143 on one or the other the gripping surfaces 1 41, 1 42 moved down, and the cylindrical part 130 is then caused to leave the groove formed by the recesses 131 and 132. 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 to the left there is a falling offset between the firing pin and the barrel, so that the

bolt 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 do the unlocking of the gun. The muzzle 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 onto 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 moves towards the cylindrical unit 16 towards the rear 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 6l, and the cartridge case then slides out of the gun or can be removed by hand.

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Claims (3)

Case 403 A-8 Pat ent claims M.) Cartridge-operated tool with a barrel and a jacket surrounding it, characterized in that there are one or more recesses extending through the barrel that are matched with one below the Barrel arranged pocket are in communication, so that the combustion gases after firing through these recesses into the pocket and then into an annular space outside the outer envelope surface of the barrel and inside the jacket surrounding it, from which it is passed through one or more axial channels are led to an outlet opening at the front end of the shell. 2. cartridge-operated tool according to claim 1, characterized characterized in that the channels through at one of the Boundary surfaces of the annular space arranged, axially directed rib-like members are formed. 3. cartridge-operated tool according to claim 2, characterized in that the mouth of the channels of a 833/0370 at a distance in front of the front end of the shell, outwardly directed transverse ones Flange are formed, which deflects the combustion gases in the transverse direction to the outside. -26- 309833/0370 Blank page