US 3678800 A
A self-loading pistol includes a spring-loaded firing pin located within a breech assembly and having a downwardly projecting nose engageable with a sear coupled to a trigger and movable generally parallel to the breech for at least part of its movement to displace the firing pin within the breech and thereafter to release the striker pin on continuing movement of the trigger thereby firing the shot. The pistol may also be provided with a catch pawl having a stop face which catches and releases the nose part when the pistol is arranged for continuous firing. In this case however the pistol must be fitted to a shoulder support which embodies means co-acting with the catch pawl to allow it to come into the operative position so that continuous firing is only possible when the shoulder support is in position.
Description (OCR text may contain errors)
United States Patent Seidel et al. 51 July 25, 1972  SELF-LOADING PISTOL WITH l,4l8,02l 5/ i922 Reifgraber ..89/ l 47 COCKING TRIGGER 72 Inventors: Alex Seidel; Tilo MfiIler, both of Obern- Primary P B y dorf/Neckar; llelmut Weldle, Befi'endorf, v all of Germany  Assignee: Firma Heckler & Koch Gmbll, Oberndorf,  ABSTRACT many A self-loading pistol includes a spring-loaded firing pin located  Filed: Sept. 17, 1969 within a breech assembly and having a downwardly projecting nose engageable with a scar coupled to a trigger and movable Appl' generally parallel to the breech for at least part of its movement to displace the firing pin within the breech and  Foreign Application Prlority'Data thereafter to release the striker pin on continuing movement of the trigger thereby firing the shot. The pistol may also be Sept. 18, 1969 Germany ..P i7 28 248.3 provided with a catch pawl having a slop face which caches and releases the nose part when the pistol is arranged for con-  :LSZII tinuous firing. In this case however the pistol must be fined to  i 4 A a shoulder support which embodies means co-acting with the  o are l I catch pawl to allow it to come into the operative position so that continuous firing is only possible when the shoulder sup-  References Cited port is in position UNITED STATES PATENTS 990,475 4/191 1 Cuccurullo ..89/l47 X 14 Claims, 2 Drawing Figures 0 6 l 6 fi'dafi l /rfi 6/ \1\ A r\\r\r\w 6 I 5 a 69 I r I 6/ I y n X W I! 1 l4 5 .ZZ 14 I 7/ I /4 I v if Z.
I? I l (a? f I (2,7 ,l 57 1/ 2i ii i Q/ 1 f M773 117' .7 .f/ /l I/ PATENTEBJULZS ma INVENTORS ALEX 551051., T110 M5l-LER and HELMUT WELDL-E SELF-LOADING PISTOL WITH COCKING TRIGGER The invention relates to a self-loading pistol with a cocking trigger which embodies a breech assembly which is displaceable in the longitudinal direction and in which a spring-loaded striker pin is displaceably supported.
Self-loading pistols with a cocking trigger offer the possibility of operating the firing device by means of the trigger for firing a cartridge introduced into the barrel so that the weapon can be very quickly made ready for firing even in the uncocked condition. The particular advantage of the cocking trigger lies in the fact that the weapon is always ready for firing and can be carried with a cartridge fitted in the barrel and without the need for a safety catch, without the danger of the loaded firing device being triggered automatically so that it fires inadvertently. These known self-loading pistols with a V cocking trigger make use of a hammer which encounters the rear end of the stn'ker pin after cocking and triggering and drives the striker pin on to the bottom of the cartridge to fire it. The hammer can be cocked, apart from by means of the trigger, by the breech assembly moving or driven backwards after firing, or also directly by hand. Such a cocking trigger with a hammer requires a multiplicity of complicated components which must be produced from high grade material with fine tolerances and they therefore represent a substantial cost. Furthermore such a complicated device embodying highly stressed parts is naturally relatively liable to disturbances.
The invention is directed to the problem of providing a selfloading pistol with a cocking trigger which has a substantially simpler construction and can therefore be produced at much lower cost than known pistols and moreover shows an extremely high degree of operational reliability.
This problem is solved according to the invention by the fact that the striker pin is forced by the spring in the direction of the impact head of the breech assembly and embodies a nose part which projects into a recess provided on the under side of the breech assembly and that the trigger device embodies a driver member of sear coupled with the trigger and guided for a part of its movement substantially parallel to the path of the breech assembly and which in its position of rest is positioned in front of the nose part of the striker pin located in its foremost position and is movable rearwardly together with the trigger to carry the striker pin rearwardly with it during its movement and at the end of its movement is deflected out of the region of the nose part so that the striker pin is released for firing the cartridge.
With the pistol according to the invention no hammer is therefore provided and consequently no complicated parts are required for holding and releasing the cocked hammer and no spring acting on the hammer. The parts which connect the trigger and the sear for transmitting the movement of the trigger to the sear can be very simply constructed. Furthermore the sear is not subjected to great forces since it only comes into contact with the striker pin at rest and no members moving very rapidly under the action of the shot have to be engaged. Nevertheless the weapon is very easy to fire since the force required for stressing the striker pin spring does not exceed the trigger loading of a normal pistol. Also no extended trigger movement is required so that the pistol according to the invention does not differ in its handling from a pistol with a cocked hammer. It offers however increased safety since it is never in the cocked condition so that undesired firing of a shot is not possible even when carelessly used. The trigger device can be provided as required with and without a pressure point action.
With the pistol according to the invention the trigger and the sear can be connected together in a simple way by at least one trigger rod displaceably mounted in the trigger casing. This provides a single connecting element of very simple construction which can be easily produced and does not occupy any great amount of space in the trigger casing. in a preferred embodiment of the invention two trigger rods are provided each supported in a slot in a side wall of the trigger casing and which embody the trigger between them at the forward end and the sear at the rear end. The trigger rods are in this case formed of simple metal strips which occupy only a small space and can be fitted beside the other parts of the pistol.
A very simple connection with the trigger can be obtained by the fact that the trigger is formed by a plate-shaped slider member displaceable in the hand grip and the trigger rods embody transverse downwardly directed lugs at their forward ends by which they engage in recesses of the slider member. At their rear ends the trigger rods can be cranked inwardly and their cranked ends provided with slots engaged by a guide pin supported in the trigger casing. The trigger rods are satisfactorily guided in this way and are displaced in their longitudinal direction on pulling the trigger.
The sear is advantageously displaceably mounted between the cranked ends of the trigger rods perpendicularly to the direction of movement of the rods and is held in the upper position by means of a spring. Also guide elements are provided which displace the sear downwardly in the rearmost position of the trigger rods, and by this displacement the nose part of the displaced striker pin is released so that the striker pin can move forwardly for firing the cartridge.
Various types of guide elements could be envisaged which are suitable for imparting a movement to the sear perpendicular to the direction of movement of the striker pin. For example it would be possible to connect suitable link members to the sear which force the latter into a curved path out of the region of the striker pin nose part, or to provide control cams in the trigger casing which engage the sear and impart the desired transverse movement to the latter.
A particularly simple arrangement is however obtained if the sear embodies an inclined surface by which it engages the guide pin for the trigger rods and so that the sear is forced downwardly. In this way and by very simple means the point at which the striker pin nose part is released is very accurately defined without it being necessary to maintain close tolerances. In this constructional form of the invention the spring loading the sear can be provided by a coil spring which rests on the one hand against the under side of the scar and on the other hand against a bent lug formed on one of the trigger rods. A stronger or a weaker pressure point is obtained according to the inclination of the inclined surface and the strength of the spring acting on the sear.
The speed of movement of the breech assembly after firing a shot is so great that the breech assembly with the striker pin moves back -to its starting position before the trigger is released and the sear has returned to its starting position. Consequently the sear must move past the nose of the striker pin during its return to the starting position. Hence the sear embodies at its front and/or the nose part embodies at its rear an inclined surface which effects deflection of the sear when the sear returns to its position of rest. Equally the sear would be displaced if the breech came to its position of rest later than the sear. Since the sear and the breech assembly with the striker pin must adopt the position of rest in order that the sear shall come in front of the nose part of the striker pin and the striker pin can be cocked for firing a new shot when the trigger is pulled, the trigger device previously described is only appropriate for one shot firing. It is however also possible to arrange the pistol according to the invention in a very simple way for continuous firing. For this purpose in a further construction of the invention a spring-loaded catch pawl is provided which on release brings a stop into the region of the striker pin nose part in such manner that the stop comes in front of the nose part as the breech moves in the rearward direction and holds back the striker pin. A control cam is however provided on the under side of the breech assembly which deflects the catch pawl out of the region of the nose part when the breech assembly reaches its foremost position. Hence so long as the catch pawl is released a shot is fired each time the breech assembly reaches its foremost position so that continuous firing is possible with this pistol.
In order to ensure that the striker pin nose part moves correctly past the stop of the catch pawl when the breech is moving in the rearward direction, the catch pawl is already released on a slight rearward movement of the breech by the control cam fitted to the breech assembly so as to bring it into the region of the nose part and the stop on the catch pawl extends so far forwardly from the rearward flank co-operating with the nose part that it engages beneath the nose part, preferably provided in the region of this stop with a stop rail associated with the nose part, before the catch pawl is released by the control cam to return to its starting position.
The catch pawl can be arranged in a simple way adjacent to the cranked end of one of the trigger rods and engage by an arm thereof against the cranked part when the trigger device is in its position of rest. In this way the catch pawl is also held in its position of rest in which the stop thereof does not come into the path of the nose part of the striker pin when the trigger is released so that a satisfactory interruption in the continuous firing is obtained. The catch pawl is also held in this position of rest by means of a selector member when the pistol is arranged for single shot firing.
In a preferred constructional form of the invention the catch pawl is normally held in its position of rest by a springoperated selector rod which is displaceably supported in the hand grip in the longitudinal direction of the weapon and is accessible from the rear of the hand grip for continuous firing setting. The arrangement of such a selector rod makes it possible in a simple manner in accordance with'a further arrangement of the invention to arrange the pistol to be fitted to a shoulder support and to provide operating members in the shoulder support for continuous firing selection which embody a selector pin co-operating with the selector rod and arranged in line therewith. This arrangement ensures that setting of the pistol for continuous firing is only possible when the pistol is secured to the shoulder support. If the pistol is released from the shoulder support the catch pawl is positively held by the selector rod in its position of rest. Since it is not possible to fire a pistol with aimed continuous firing in the free hand this arrangement ensures that in normal operation of the pistol wastage of ammunition or even accidents by snatching of the weapon are avoided which could be produced if resetting of the pistol for single shots were forgotten. On the other hand after setting for continuous firing the pistol according to the invention in conjunction with a shoulder support represents a highly effective weapon with a high firing efficiency.
The striker pin can be inserted from the rear in a simple way in a stepped rearwardly open bore in the breech assembly the rear end of which is occupied by a counter support for the striker pin spring. This counter support can be held in the bore by means of a bayonet joint so that the striker pin and the striker pin spring can be removed from the breech assembly without requiring any tools.
Further details and constructions of the invention will be apparent from the following description in which the invention is further described and explained on the basis of a constructional example shown in the drawings. The features referred to in the description and the drawings can be used individually in other embodiments of the invention or several of them may be used in desired combination. In the construction shown on the accompanying drawings:
FIG. 1 is a longitudinal section through the upper part of a pistol according to the invention, and
FIG. 2 is a section on the line II-Il through the hand grip of the pistol according to FIG. I.
The pistol shown on the drawing consists of a hand grip l with a trigger 2 and a trigger assembly 3 and of a breech assembly 4 and breech 5 with a striker pin 7 loaded by a coil spring 6. A block 8 is secured to the hand grip 1 above the trigger 2 in which the barrel 9 is fitted. The breech assembly 4 is a displaceably supported relatively to the hand grip l of the pistol in the longitudinal direction thereof, and is provided on the one hand with a bore 10 in a transverse wall 11 at the forward end of the breech assembly 4 on which the barrel 9 of the pistol is guided, and on the other hand with two guide lugs 12 fitted to the rear end of the hand grip 1 and engaged in corresponding guide grooves of the breech assembly 4 which are not shown in detail.
The main spring 13 is arranged concentrically around the barrel 9 between the block 8 of the hand grip 1 and the transverse wall 1 l of the breech assembly 4. The recoil of the breech assembly 4 is limited by a stop 14 formed by a projection on the front face of a slider 15. The slider 15 is displaceably supported by angle rails 16 at the front of the block 8 perpendicularly to the barrel 9 and can be forced so far into the opening 18 enclosed by the trigger ring 17 that the stop 14 enters a corresponding recess 19 in the hand grip l. The breech assembly 4 can then be drawn so far rearwardly past the stop 14 that the guide lugs 12 enter recesses not shown in the breech assembly 4 which connect the guide grooves in the breech assembly with the edge of the latter so that the breech can be raised from the guide lugs 12 and then withdrawn forwardly from the barrel 9. The slider 15 embodies a recess 20 on the side facing the block 8 which is engaged by a projection 21 of the trigger 2. lnwardly extending projections 22 are located in the upper section of the recess 20 which engage in corresponding recesses in the projection 21 of the trigger 2 when the slider 15 is located in its lower most position. This arrangement ensures that the pistol can only be fired when the slider 15 and thus the stop 14 is located in the operating position, in which the movement of the breech assembly 4 is limited by the stop 14. The slider is retained in this working position by means of a spring detent 231.
Side walls 23 of a trigger casing extend from the part of the block 8 which is enclosed by the breach assembly, the trigger casing being fastened at its forward end laterally to the block 8 while its rear ends are connected by a terminal member 24 which embodies laterally the guide lugs 12 for the breech assembly and at the rear an undercut guideway 25 which permits the pistol to be secured to a shoulder support, not further described. The side walls 23 of the trigger casing embody slots 26 in which trigger rods 27, 28 are guided. The trigger rods 27, 28 are provided at their forward ends with transverse downwardly and inwardly directed lugs 29 which extend past the block 8 and engage in corresponding recesses of the trigger 2.
The trigger 2 is itself formed by a flat slider member which is displaceable in its longitudinal direction in corresponding recesses of the hand grip 1. It rests at the rear against a coil compression spring 30 which engages at its forward end in a corresponding aperture 31 in the trigger 2 and its rear end on a guide pin 32 which in turn is fixed to a cross member 33 secured to the hand grip. The guide pin 32 has a collar 34 which rests against the front of the cross member 33 and this collar also forms the counter support for the rear end of the coil spring 30.
The rear ends 35, 36 of the trigger rods 27, 28 are cranked inwardly at 39, 40 and are provided with slots 37 engaged by a guide pin 38 fitted to the side walls 23 of the trigger casing so that the trigger rods 27, 28 are displaceable in the longitudinal direction on this pin. The trigger rods 27, 28 embody downwardly projecting lugs immediately beyond the cranked parts 39, 40 of which only the lug 41 of the trigger rod 27 is visible in FIG. 1. The lug fitted to the cranked end 36 of the trigger rod 28 lies opposite to the lug 41 of the trigger rod 27. A sear 43 is displaceably supported in the vertical direction between the two lugs by means of vertically arranged slots 74 for movement perpendicularly to the direction of movement of the breech assembly 4, the slots engaging pins 42 arranged one above the other and fitted to the cranked ends 35, 36 of the firing rods 27, 28. A coil compression spring 44 which fits at its upper end in a recess in the under side of the sear 43 and at its lower end against an angle part 46 of the lug 41 fitted to the trigger rod 27 tends to hold the sear 43 in its uppermost position.
The sear 43 is recessed at its upper edge so that a shoulder 47 is formed extending perpendicularly to the direction of movement of the breech assembly. Furthermore the sear 43 embodies at a distance in front of the shoulder 47 an obliquely forwardly and downwardly directed inclined surface 48. A further inclined surface 49 is provided on the back of the sear 43. This second surface is located in the region of the slot 37 formed in the cranked ends 35, 36 of the trigger rods 27, 28.
Further a catch pawl 51 is pivotally supported in the trigger casing of the hand grip l in the region between the cranked end 35 of the trigger rod 27 and the side wall 23, being pivotally supported on a pin 50. The catch pawl 51 embodies a laterally cranked lug 53 at the part thereof lying beneath the bearing pin 50. which lug in the normal position shown engages a collar 54 on a selector rod 55 which is displaceably supported in the hand grip l in the longitudinal direction thereof parallel to the direction of movement of the breech assembly 4. A coil spring 56 tends to force the selector rod 55 rearwardly and to hold the collar 54 in engagement with the lug 53 of the catch pawl 51. Furthermore the catch pawl 51 embodies an arm with a projection 57 which in the normal position shown rests against the under side of the cranked part 39 of the trigger rod 27. At its upper end the catch pawl is provided with a laterally extending stop 58 which co-operates with the striker pin 7 of the pistol in a manner to be described.
The striker pin .7 embodies on its under side a nose part 59 which engages a corresponding recess on the under side of the breech 5 and is adapted to co-operate with the sear 43 or the catch pawl. The nose part 59 embodies a steep flank 60 at the front while the rear is provided with an inclined surface 61 in the operative region of the sear 43. Adjacent to this inclined surface and in the operative region of the stop 58 of the catch pawl a stop face 62 is provided which extends over the stop 58 on the catch pawl. The striker pin 7 and the striker pin spring 6 are introduced from the rear into a rearwardly open stepped bore63 in the breech 5 and are held in this bore by means ofa counter support 64 which fills the rear end of the bore 63 and is held in the bore by a bayonet joint. For this purpose the counter support 64 is provided at its periphery with a groove 65 and a pin for engaging in the groove is fitted in the breech A guideway is moreover provided in the hand grip l for inserting a magazine 66 as well as a safety catch device 68 engaging a recess 67 in the trigger 2.
The weapon described by way of example is shown in FIG. 1 in the position of the parts as ready for firing if a cartridge is inserted in the barrel which can be introduced by pulling backward the breech assembly 4. On operating the trigger 2 the trigger rods 27, 28 are moved with the trigger in their longitudinal directions. Thereby the sear 43 moves rearwardly and the shoulder 47 engages the flank 60 on the projection 59 of the striker pin 7 and thereby the striker pin is carried rearwardly loading the striker pin spring 6. When the inclined surface 49 of the sear 43 strikes against the guide pin 38 for the trigger rods the sear 43 is forced downwardly on the further movement of the trigger and of the trigger rods by the action of the guide pin 38 so that the shoulder 47 comes out of engagement with the nose part 59 of the striker pin and the striker pin is driven forwardly by the spring 6 acting on it. Thereby the cartridge is fired. By the gas pressure produced on firing the bullet the breech assembly 4 is moved rearwardly in the usual way and extracts the empty cartridge case which is ejected in known manner.
The extractor and ejector are not shown to avoid complicating the drawing. Then the breech assembly 4 is again moved forwardly by the main spring 13 whereby a new cartridge is introduced into the barrel 9 from the magazine 66. On releasing the trigger 2 it is moved back by the spring 30 again to its starting position which also returns the trigger rods 27, 28 and the sear 43 into the starting position.
Thereby the inclined surface 48 on the front of the sear 43 runs on to the inclined face 61 of the nose part 59 of the striker pin so that the sear 43 after it has been released by the guide pin 38 is again forced downwardly and can slide past the nose part 59. After the trigger assembly has again reached its starting position a new shot can be fired in the manner described. The strength of the striker pin spring 6 and of the spring 30 operating on the trigger can be so chosen that the total force required for firing the pistol does not exceed the normal trigger weight of the pistol. The pistol can however be fired very easily although it incorporates a cocking trigger.
The trigger arrangement described embodies a pressure point which is given by the engagement of the inclined surface 49 of the sear 43 with the guide pin 38 and the strength of which depends on the inclination of the surface and the force of the coil spring 44 acting on the sear 43. it would however also be possible to provide a cam instead of an inclined surface and/or to make the coil spring so weak that firing is virtually without a pressure point. Furthermore a pressure point action can for example be provided by means of an additional spring against which the trigger 2 is engaged shortly before the end of its movement.
The pistol can be set for continuous firing for which purpose the selector rod 55 must be moved so far against the force of the spring 56 that the collar 54 at its forward end releases the lug 53 fitted to the catch pawl 51 so that the spring 52 can rotate the pawl in the clockwise direction. The catch pawl is however held from rotation by the stop 57 engaging the under side of the cranked member 39 until the trigger 2 is operated. When however the trigger 2 is operated and the first shot is fired in the manner described, the stop 57 can move past the cranked part 39 of the trigger rod 27 and swing the pawl so far that the stop 58 on the pawl engages by its rear flank against the front flank 60 of the striker pin nose part 59, when the breech assembly 4 approaches its rear end position.
On forward movement of the breech the striker pin 7 is held back against the action of the striker pin spring 6. On the under side of the breech assembly 4 is a control cam 69 which co-operates with the upper edge of the catch pawl 51 and forces downwardly the arm of the pawl provided with the projection 58 when the breech assembly 4 has reached its foremost position. Thereby the striker pin 7 is released by the catch pawl 51 so that it moves forwardly and fires the cartridge just introduced into the barrel. This action is repeated so long as the trigger is pulled. The weapon thus fires continuously. If the trigger is again released the cranked part 39 on the trigger rod 27 engages the stop 57 on the pawl 51 at the moment at which the pawl is swung out of the region of the nose part 59 of the striker pin by the control cam 69 on the under side of the breech assembly 4, so that the catch pawl is held in the normal position shown in FIG. 1 and the striker pin 7 together with the breech assembly 4 can again travel forwardly in the manner already described without firing a shot. Continuous firing is thus reliably stopped by releasing the trigger.
With continuous firing the catch pawl 51 is released by the control cam provided on the under side of the breech assembly 4 so as to as to swing back to its starting position and so that the stop 58 on the catch pawl can again come into the region of the striker pin nose part 59. A stop rail 62 is provided in the operative region of the stop 58 on the under side of the nose part 59 in order that the stop 58 shall not hinder the return movement of the breech assembly 4 with the striker pin 7 and the stop 58 is made so long that also in the normal position shown in FIG. 1 the stop rail 62 extends beneath the striker pin nose part 59. The striker pin nose can therefore move unhindered past the stop 58 of the catch pawl 51 during the rearward movement of the breech assembly 4 until the front flank 60 passes beyond the rear flank of the stop 58 and the stop comes behind the nose part.
Since it is not possible to fire continuously with a pistol from the hand, in the constructional example of the pistol shown no selector means are provided to permit setting of the weapon for continuous firing. As already stated the pistol shown is provided with slide guides 25 which permit the pistol to be fastened to a shoulder support. Operating members are provided in the shoulder support, not shown, which include a selector pin arranged in line with the selector rod 55 which permit depression of the selector rod 55 for setting the weapon for continuous firing. With the shoulder part a highly effective continuous fire can then be delivered by the pistol according to the invention.
It should be understood that the invention is not limited to the constructional example shown but changes are possible without departing from the scope of the invention. In particular, embodiments of the invention are possible which do not embody any continuous firing device and which are not arranged for fastening to a shoulder support. Further it is possible to use a pivoted trigger in the usual way the end of which is connected to the sear by a single trigger rod. The guiding of the sear can be effected by means of links or guide cams fitted to the hand grip. The embodiment shown however illustrates how the pistol according to the invention embodies an extremely simple construction and also permits a very simple continuous firing device to be included.
What we claim is:
l. A self-loading pistol with a cocking trigger comprising a longitudinally displaceable breech assembly including a spring-loaded striker pin movable toward the pistol barrel, a nose part on the striker pin projecting into a recess on the underside of the breech assembly, a trigger handle, and a sear movable in the same direction as the breech for part of its movement and located in a normal position in front of the nose part of the striker pin when located in its foremost position, said sear being movable rearwardly with the trigger to carry the nose part and the striker pin rearwardly and being deflectable out of the region of the nose part towards the end of its movement to release the striker pin for firing the cartridge, the trigger handle and the sear being connected together by two trigger rods displaceably supported in a slot in a side wall of the trigger casing, the front ends of said trigger rods enclosing the trigger handle therebetween and the rear ends of said trigger rods enclosing the sear therebetween, the trigger handle is formed by a plate-shaped slider member displaceable in a hand grip and the trigger rods embody at their front ends transverse downwardly directed lugs by which they engage in corresponding recesses of the trigger.
2. Pistol according to claim 1 in which the trigger rods are cranked inwardly at their rear ends and the cranked end parts are provided with slots engaged by a guide pin supported in the trigger casing.
3. Pistol according to claim 2, in which the sear is displaceably supported between the cranked ends of the trigger rods for movement perpendicularly to the direction of movement of the rods and is held by a spring in its upper position, and in which guide elements are provided which displace the sear downwardly in the rearmost position of the trigger rods.
4. Pistol according to claim 3, in which the sear embodies an inclined surface which engages the guide pin for the trigger rods.
5. Pistol according to claim 3, in which a coil spring acts upon the sear and bears at one end against the sear and at the other end against an anglemember on one of the trigger rods.
6. A self-loading pistol with a cocking trigger, comprising a pistol body having a slide chamber therein, a longitudinally movable breech assembly disposed within said slide chamber, a movable striker pin slidable within said slide chamber and having a projection extending through a recess in the underside of the slide chamber, a. spring positioned to force the striker pin in a forward direction toward a cartridge firing chamber, a triggering mechanism including a movable sear having abutment means, said sear being connected to trigger bar means and being movable with respect to said trigger bar means said trigger bar means being connected to a manually actuable trigger handle, and sear guiding means provided within said pistol body for guiding the sear along a path, said path having a first portion substantially parallel to the direction of movement of said breech assembly and a second portion substantially perpendicular to the direction of move ment of said breech assembly, characterized in that the striker pin is in its forwardmost position and the abutment means are positioned in front of the projection prior to actuation of said trigger handle and that the abutment means are arranged to engage the projection for carrying the striker pin in the rearward direction during the movement of the sear means along the first portion of the path and to disengage from the projection for releasing the striker pin to fire the cartridge during movement of the sear means along the second portion of the path upon actuation of the trigger handle.
7. A pistol according to claim 6, in which the striker pin and the striker pin spring are inserted from the rear in a stepped rearwardly open bore in the breech assembly, the rear end of which houses a counter bearing for the striker pin spring.
8. A pistol according to claim 7, in which a counter support held in the bore by means of a bayonet joint holds the striker pin and spring in place.
9. A self-loading pistol as claimed in claim 6, characterized in that said trigger bar means is guided within said pistol body for movement in a direction substantially parallel to the move ment of said breech assembly.
10. A self-loading pistol as claimed in claim 9, characterized in that the connection between the sear means and the trigger bar means includes spring means positioned perpendicular to force said sear means upwardly toward said striker pin in a direction perpendicular to the direction of movement of said trigger bar.
11. A self-loading pistol as claimed in claim 10, characterized in that the sear guiding means includes cam means fixedly positioned within said pistol body for engagement with a cam surface on the sear means to force the sear means downwardly along the second portion of its path.
12. A self-loading pistol as claimed in claim 11, characterized in that the means for guiding said trigger bar means includes a guide pin extending transversely to the direction of movement of the trigger bar means, said guide pin also serving as the cam means for engagement with the cam surface on the sear means to force the sear means downwardly.
13. A self-loading pistol as claimed in claim 11, charac terized in that said trigger bar means includes two trigger rods which enclose the trigger handle between them at one end thereof and which enclose the sear means between them at the other end thereof.
14. A self-loading pistol as claimed in claim 6, characterized in that the sear means is provided with an inclined surface on its forward face and the striker pin projection is provided with an inclined surface on its rearward face, a cooperation between said inclined surfaces effecting the displacement of the sear to facilitate the return of the sear means to its original position after the firing of the pistol.