DE2303373A1 - BULLET CASE EJECTOR FOR A BOLT GUN - Google Patents

Description

Case 4

A-8

Gunnebo Bruks Aktiebolag, Gurtnebobruk, Sweden

Cartridge case ejector for a bolt gun

The invention relates to a cartridge case ejector for a bolt gun (nail or bolt gun). Screw gun). Such cartridge-operated tools are used for both nails and screws used. A known tool of this type is described in Swedish patent specification 216 217. at In the tool according to the patent specification, the cartridge case is ejected when the firing pin is withdrawn. However, there is no absolute certainty that the cartridge case is actually ejected every time will.

The invention is based on the object of a one hundred percent reliable device for ejecting the sleeve to create a used cartridge, and the invention

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Application also relates to tools with a trigger device of the type shown in the Swedish patent. According to this patent specification, the axial movements of the firing pin are limited by means of a special screw which engages in a longitudinal groove in the firing pin. The ejector according to the OF INVENTION _T dung consists of a lever, whose ends are in the same transverse direction, two arms extend, limits their one instead of said screw, the movement of the striker and their anderer'den flange engages the hint "sBren end of the cartridge, so that when the barrel is moved away from the trigger, the cartridge case remains in place and falls off from it or is easily removable. The arm is pivoted in an axial groove in the trigger mechanism and a force is exerted on it which tends to impart a swinging motion to the arm and which can be supplied by the spring against which the trigger mechanism is in the unlocked position works.

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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 shooting apparatus a cartridge case ejector is arranged j

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 Division of functions j

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 apparatus before or after the cartridge is ignited;

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

Fig. I6 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;

Figures 18, 19 and 20 show the interaction more fully 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 Fig. 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 protrudes, on the upper side 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 can move axially along the hole. 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 trough or trough. A cross-section through this trough shows that the trough is semi-circular and that the inner envelope surface of the trough forms a connecting envelope surface between the inner envelope surface of the guide part 4 and the inner envelope surface of the housing 6. In the guide part 4, the part 8 and the housing 6 a cylindrical tube-shaped chuck 9'J is arranged, which is cut away at 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 an 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 14, which may be, for example, made of an elastic material such as rubber or plastic. The link 14 has

12 is of 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 14 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 · In. 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 carries the firing pin member 21 a striker 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 is insertable 22 in the hole that on the left side of the wall 23 a piece of the same protrudes outwards. 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, 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 16 is recessed in a part thereof 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 supported on the contact surface 27. The other end of the pen acts against the transverse flange 30 of a member forming the flange and a tubular part 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 a flange 33 »at its rear end to rest can be brought to the contact surface 32. That Firing pin link 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 is supported on the inner wall of the housing 12 rests. The tubular part 3I is surrounded by three rings 35 »36 and 37, which oppose the Transverse flange 30 and the bottom of the cap 12 supported are. These three rings are made of elastic. Material made and suitable for dampening the recoil forces.

At the upper end of the handle 2 an axial, more or less rectangular through hole 38 is arranged. The hole 38 opens into a conventional vent 39 · Di © Axialnut Z6 goes from the upper part

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of the through hole 38.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 lug 42, which is arranged at the top at one end 40, can interact with the nose 25 of the bolt 18. 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 4l. 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 axial direction in the through hole 38 and has a more or less vertical hole 53 for the downwardly directed arm 47. At the lower end the trigger 53 has a hole 54 which is more or less axially directed. 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 that the trigger is always in its front position, while at the same time the two-armed

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Lever 41 is urged into its lower position.

In the cylindrical unit (FIG. Z) , 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. Extending from the ends of arm 58 are two arms 59 and 60 (FIGS. 3 and 4). The latter 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 64 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 can snap into place at the front of the flange 62 .

A barrel 68 is arranged such that it is axially displaceable in the cylindrical chuck 9 (FIG. 1). At the rear end of the barrel has a chamber 69, the front end of which is inserted into a bore f0 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 7k of which has a diameter essentially corresponding to the head 100 of an ISLagel'S 99. At the front end of the muzzle part.73 is drilled, 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 7 ^ is always inserted in the bore Jk. 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 h . 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 in front of the nose 79 a ring 82 of elastic material is arranged, 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 Qh 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 chuck 9 is provided 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 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. To the outer envelope surface of the chuck are provided on this in the longitudinal direction of the axial ribs 91 which extend from a point

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on the lining 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 shell recess 93 (FIGS. 5 and 6). In the left part of the Muzzle part that is not cut out, there is a shallow axial groove 94, which extends from the cutout extends to the left. In the front end of this groove, i.e. at its left end, there is a radial hole 95 »in 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 tongue 98 are made of such a material that the tongue always tries to push the ball 96 downwards. 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 disk 101 is inserted into the bores fh 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 retracting the ball 96 can, of course, be used generally in the case of muzzle parts for any bolt-firing apparatus.

The mouth part 73 is surrounded by a collar 102, which consists of a front part 103 and a rear part ΛΟΗ (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, des 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 protrudes over the lateral surface forming section. This cube-shaped part has four flat axial surfaces 108, 109, 110 and 111. Surfaces 108 and 110 are spaced apart a distance substantially equal to 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 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 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 have passed the flanges 105 and 106 and the cube-shaped portion 107 is to the left of the downward 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 abut the flanges 105 and 106 to a position in which the former flanges abut the contact surface 114 thanks to the presence of the flanges 105 and 106 and of 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 that 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 hießdpparat move - even solve the backup. 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 there 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; II9 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 reshaped. In this way, the front of the cartridge is not jammed in the chamber, nor is debris deposited in the chamber 69 which could narrow the chamber and cause jamming of cartridges later inserted into the chamber. In the vicinity of the chamber 69, the barrel 68 has an axial groove , which lies radially for the attack of the arm 60 (Fig. k) . 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 Abzugine chani sraus was described above to a large extent, but not yet sufficiently, and will be discussed in more detail below (Figs. 14 and 15). The horizontal arm 48 can be in a Axial groove 49 move in the two-armed lever 41, and its free end can be made to align with the outer envelope surface of the housing 9 to come into contact, the shape of the groove is probably best shown in FIG. The nose 25 for the seal 18 has two transversely directed inclined surfaces 125 and 126. The inclination of the surfaces is a maximum of 80, in the longitudinal section the nose 25 is schwalbenschvan z-shaped. The nose 42 has an inclined front side surface 127 with a slope 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 have an approximately cylindrical shape, and a recess 131 or 132 is formed in the outer envelope surface of the barrel on each side of the groove 78 in the barrel 68. Its function is that of a guide groove for part I30. The T _Q il 130 thus 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 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 right angles to the axis of the barrel. Thus, when 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 connection of the part 13O to 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. At the bottom, 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 zapfenförtnige 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 portion 139 is in contact with the outside of the end wall I36. When one of the gripping surfaces 141 and 142, for example the gripping surface 142, is actuated with the finger 1 ^ 3 (FIG. 21), the part 130 is moved downward so far that it leaves the groove formed by the recesses 131 and 132 and consequently the barrel 68 has the possibility of moving 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 1 kh 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 Γ.84 also serves to protect the nose 79 from being destroyed by the rear part 76 to protect. Parts 82 and 84 can generally used in shooting equipment.

The shooting apparatus described above works in the following way. 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 comes into contact with the end wall 80. 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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If the nail is inserted into the bores Th and 75, the ball 96 is pushed aside when the guide disk passes, overcoming the spring load. 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 126 of the nose 25 is located in front of the inclined surface 127 of the nose hz . Ignition is therefore not possible. When the rear end of the collar 104 with the flange 10 is in contact, the mouth part century jumps so far beyond the front end edge of the collar addition, as required, so that the lug 25 is located directly under the nose Hz. If the front end of the Minding 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 apparatus is now ready to fire, ie _for the nose 42 is located 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 47 pulls the left part 44 of the lever 41 downwards, which in turn has the consequence that the right part 40 the bolt 18 so far upwards presses that the hammer pin member is released for movement to the left and the firing pin 22 now passes through the hole 24 and the cartridge 63 ignites. Thanks to the lever system, an extremely small exertion of force on the trigger 52 is sufficient to move the bolt 18 which, for safety reasons, is actuated by a very strong spring; is. 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 42 ceases to cooperate with the nose 25. The Abztig 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 of the cartridge 63 escape through the groove 78 and the one below it.

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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 Chuck 9 and the inner envelope surface of the guide part h 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 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. 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 Wirkräng is damped by the member 1 k made of elastic material. The recoil is also dampened by the three rings 35 »36 and 37», which are also made of elastic material.

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When the nail is driven, the quergfrr "" hv 3 / * preparing handle part 139 by a downward force exerted by a finger 143 to the one or the other of said gripping surfaces 1 41, 142 moves downward, and the cylindrical part 130 is then caused to leave the groove formed by the recesses 131 and 132. The barrel 68 can now be moved completely to the left until it comes into contact with the end wall 80. This movement of the barrel to the left can be achieved by either dropping the barrel down under its own weight or subjecting the barrel to centrifugal force. The barrel can also be pulled out. When the barrel moves to the left, the firing pin is held in the shooting apparatus by the nose 79 in a stationary collar. This means that while the barrel is moving to the left, a relative displacement occurs between the firing pin and the barrel so that the firing pin and its bolt return to their original position The nail is loaded and the barrel is returned to the position where the barrel and nail are ready for the new nail to be driven.

As already mentioned above, the collar 104 is intended to do so

serve to protect the muzzle portion 73 and to regulate the distance by which the barrel can be moved backwards

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must to unlock 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 Mündimgsteü 73 on the barrel * 68 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 is moved backwards against the cylindrical unit 16, 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 flange 62 is disengaged In this state, the flange is in contact with the front transverse surface of the cylindrical unit 16. Now, if the movement of actuator of the handle portion 139 is moved forward, the cartridge is held back 63 of the tip 61, and the cartridge case ¹¹ * fä then be removed by hand from the shooting apparatus or can.

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Claims (3)

Case I Α-8 Claims Λ, j Cartridge case ejector for a nail or screw gun with a trigger device for igniting a propulsion cartridge containing an explosive charge, with an axially movable bolt and an axially movable firing pin and a transversely directed pin inserted in the firing pin to limit the axial movement of the firing pin as well as a spring acting on the bolt, characterized in that an axial groove or a channel is provided in the outer envelope or jacket surface of the bolt, that an elongated member is arranged in the channel, which is equipped at its ends with two inwardly directed arms, one of which can be brought into contact with a front flange surface of a propulsion cartridge when the firearm is loaded and retains the cartridge in contact with the front surface of the bolt, and the other of which, thanks to the shape of the bolt, replaces the pin limiting the movement path, 2. Cartridge case ejector according to claim 1, characterized in that that the elongate member by a spring force or the like. can be actuated in such a way that one arm -25- 309833/0385 endeavors at all times to take a position corresponding to the contact with the flange surface. 3. cartridge case ejector according to claim 2, characterized in that that the spring force is derived from the spring acting on the bolt. H. Cartridge case ejector according to one of the preceding claims, characterized in that the elongate member is pivotable about a fixed pivot bearing. -26- 309833/0365 ι β · Le e.rse ι te