Patent Abstract:
The invention concerns a cocking device for a bolt mechanism with a cocking slider ( 13, 14 ), which can be displaced, on a breech housing ( 2 ), between a rear uncocking position and a front cocking position, for the cocking and uncocking of a striker spring and a catch ( 21 ), located on the cocking slider ( 13, 14 ), which works together with a mating catch ( 23 ) to hold the cocking slider ( 13, 14 ) in the front cocking position. In order to attain an improved safety with respect to an unintended release of a shot, an uncocking mechanism ( 25, 29 ) for the automatic uncocking of the striker spring ( 48 ), when the magazine ( 5 ) has been removed, is correlated with the cocking slider ( 13, 14 ).

Full Description:
FIELD OF THE INVENTION 
     The invention concerns a cocking device for a bolt mechanism. 
     BACKGROUND OF THE INVENTION 
     Such a cocking device is known from DE 42 23 498 C2. There, a cocking slider for the cocking and uncocking of a striker spring, which can be displaced between a rear uncocking position and a front cocking position, is located on a breech housing of a rifle. The cocking slider has an upper slider part, which projects upward from the breech housing, and a lower catch part with a catch, which is located in the breech housing. The catch of the cocking slider is intended to mesh with a mating catch, which is located firmly on the breech housing, to hold the cocking slider in the front cocking position. With this known cocking device, the cocking slider for the cocking of the striker spring on the upper slider part can be pushed forward and meshes into the corresponding mating catch on the breech housing, in the front cocking position, with its catch, provided on the rear end of the catch part. By pressing on the rear end of the slider part, it is possible to press out the catch from the mating catch, wherein the cocking slider again arrives at its rear uncocked position, with the uncocking of the striker spring. 
     SUMMARY OF THE INVENTION 
     The goal of the invention is to create a cocking device of the type mentioned in the beginning, which has an improved safety with respect to the unintended release of a shot. 
     This goal is attained by a cocking device as set forth in the claims. Appropriate developments and advantageous refinements of the invention are given in the subclaims. 
     In the cocking device in accordance with the invention, an uncocking mechanism for the automatic uncocking of the striker spring when a magazine is removed is correlated with the cocking slider. If the magazine is removed from a magazine well of the rifle or is not correctly inserted into the magazine well, then the cocking slider is automatically pushed into its retracted uncocked position and in this way, the striker spring is uncocked. With the removal or incorrect locking of the magazine, therefore, the striker spring is automatically uncocked and cannot be cocked into the cocking position even with a displacement of the cocking slider. Even if there is still a cartridge in the cartridge chamber, a shot cannot be released, wherein an increased safety of the rifle is attained. 
     In a particularly appropriate embodiment, the uncocking mechanism has a catch plate in the breech housing, which can displaced between a rear safety position and a front catch position, on which the mating catch for the catch of the cocking slider is located. If the catch plate is located in the rear safety position, the catch of the cocking slider in the front cocking position has no abutment, so that the striker spring cannot be cocked. The holding of the catch plate in the front catch position, with a properly inserted magazine or the release of the catch plate for the displacement into the rear safety position, with the removed or improperly inserted magazine, takes place via a blocking element, arranged as, for example, a blocking fork, which is located in the breech housing. 
     The blocking element is appropriately movable via an actuation mechanism, located in a system casing, between a lowered position for the holding of the catch plate in the front catch position and a raised position for the release of the catch plate for its displacement into the rear safety position. 
     The actuation mechanism appropriately comprises one or more pressure pins, arranged in a displaceable manner on a carrier; they can be moved upon insertion of the magazine, via rocker levers, into a retracted position, and upon removal of the magazine, via springs into an extended position to push the blocking element into the raised position for the release of the catch plate. 
     The blocking element is preferably designed as a blocking fork with a placement surface for a rear end surface of the catch plate and a passage for the catch plate located below the placement surface. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Other special features and advantages of the invention can be deduced from the following description of a preferred embodiment example with the aid of the drawing. The figures show the following: 
         FIG. 1 , a partial view of a repeating rifle with an uncocked cocking device and a magazine inserted in the longitudinal section; 
         FIG. 2 , a partial view of the repeating rifle of  FIG. 1 , with a cocked cocking device; 
         FIG. 3 , a partial view of a repeating rifle, with an uncocked cocking device, with the magazine removed; 
         FIG. 4 , a perspective view of the cocking device in an uncocked position, in accordance with  FIG. 1 ; 
         FIG. 5 , an enlarged representation of the lower part of a cocking slider from the cocking device of  FIGS. 1-4 ; 
         FIG. 6 , an enlarged representation of a catch plate from the cocking device of  FIGS. 1-4 ; and 
         FIG. 7 , an enlarged representation of a blocking element from the cocking device of  FIGS. 1-4 . 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       FIGS. 1-3  show a part of a repeating rifle with a system casing  1 , a bolt mechanism  2  arranged in a displaceable manner on the system casing  1 , a rear shaft  3  affixed on the rear side of the system casing  1 , and a magazine  5  inserted in a magazine well  4  from the underside of the system casing  1 . In the embodiment example shown, the trigger guard  6  with the trigger  7  is located on the underside of the magazine  5 . The trigger guard  6  and the trigger  7  are therefore firmly connected to the magazine  5  in this embodiment, so that they remain on the magazine  5  even with the removal of the magazine  5  from the repeating rifle. If the magazine  5  is removed, then the trigger device can also no longer be actuated. 
     A striking pin  8  with a cocking piece  9  is located in the breech housing  2 . The cocking piece  9  is connected to a trigger mechanism—not shown in more detail here—which is located in the system casing  1 ; the trigger mechanisms cannot be actuated with an inserted magazine  5 , due to a projection  10  of the trigger  7 , which can be seen in  FIG. 4 . There is also a locking chamber  11  with a locking element  12 , designed as an expansion sleeve, accommodated in the breech housing  2 . 
     A cocking slider with an upper cocking slider part  13  and a lower cocking slider part  14 , shown separately in  FIG. 5 , is arranged in a displaceable manner between an uncocking position, shown in  FIG. 1 , and a cocking position, shown in  FIG. 2 , on the rear end of the breech housing  2 , descending at a slant toward the rear. The lower cocking slider part  14  is connected to a cocking pin  17 , located, in a displaceable manner, within the striking pin  8 , via a fork piece  15  and an articulated lever  16 . By displacement of the cocking pin  17 , with the aid of the cocking slider, a striker spring  48 , shown schematically in  FIG. 3 , can be cocked or uncocked within the striking pin  8 . 
     From  FIG. 5 , it is clear that the lower cocking slider part  14  has an upper area  18 , located in the upper cocking slider part  13 , a middle cross-link  19 , which is guided, in a displaceable manner, in a longitudinal slit of the breech housing  2 , and a lower catch cross-link  20  with a catch  21 , which is designed as a rear catch surface, at an incline. Via lateral pins  22  on the lower catch cross-link  20 , the lower cocking slider part  14  is connected to the fork piece  15 , in accordance with  FIG. 4 . The catch  21  is intended for placement on an opposite mating catch  23 , at an incline, on the rear end of a longitudinal hole  24  in a catch plate  25 , shown in  FIG. 6 . 
     The catch plate  25 , shown separately in  FIG. 6 , lies on the lower catch cross-link  20  of the lower cocking slider part  14  and is guided by lateral projections  26  on the catch cross-link  20 . The catch plate  25  has a round end surface  27  on its rear end, for placement on a corresponding placement surface  28  of a blocking element  29 , shown in  FIG. 7 . 
     The blocking element  29 , constructed here as a blocking fork, contains two parallel connecting pieces  30 , projecting downward, in accordance with  FIG. 7 , with a slit-like passage  31 , located below the placement surface  28 , which has a somewhat larger width than the catch plate  25 . 
     Furthermore, a projection  32  with a placement surface  33 , which is rounded off inwardly, is provided on the upper side of the fork-like blocking element  29 . 
     As can be seen from  FIGS. 1-4 , a carrier  34  with two vertically displaceable, parallel pressure pins  35 , which are acted on upwardly by pressure springs, is placed in the system casing  1 . The upper ends of the pressure pins  35  are intended for engagement with the lower ends of the two connecting pieces  30  of the blocking element  29 . Moreover, two rocker levers  36 , coupled with the pressure pins  35 , are placed laterally on the carrier  34 . 
     In  FIG. 3 , one can see that the rocker levers  36 , which can swivel around axles  37  on the carrier  34 , have a rear end  38 , connected to the individual pressure pin  35 , and a front end  41 , which projects into a holding gap  39 , between the magazine well  4  and a front projection  40  on the carrier  34 . The rocker levers  36  are coupled with the pressure pins  35  in such a way that the upper ends of the pressure pins  35  are retracted upward into the carrier  34  by the swiveling of the front ends  41  of the rocker levers  36 , and are pushed downward by the swiveling of the front ends  41  of the rocker levers  36 , again upward via the force of the pressure springs, and thereby press the blocking element  29  upward into a raised position. The actuation of the rocker levers  36  takes place via the magazine  5 , whose upper border  42  meshes into the holder gap  39  in the incorporation position of the magazine  5  shown in  FIG. 1 , and the front ends  41  of the rocker levers  36  are swiveled into the upper position, shown in accordance with  FIG. 1 . In this way, the upper ends of the pressure pins  35  are retracted into the carrier  34 . If, on the other hand, the magazine  5  is removed in accordance with  FIG. 3 , then the rocker levers  36  are again rotated back, via the pressure springs on the pressure pins  35 , so that the upper ends of the pressure pins  35  are again moved upward and the blocking element  29  is pushed into the raised position shown in accordance with  FIG. 3 . 
       FIG. 4  shows that laterally elastic flaps  44 , with an upper locking lug  45  and a lower gripping part  46 , are placed on the side walls of a housing  43  of the magazine  5 . If the magazine  5  is correctly inserted into the magazine well, the locking lugs  45  mesh into indentations  47 , shown in accordance with  FIG. 3 , on the lateral interior walls of the magazine well  4 . To remove the magazine  5  from the magazine well  4 , the two flaps  44  can be pressed together via the gripping parts  46 , which project downward, and in this way, the locking lugs  45  are moved out of the corresponding indentations  47 . With the removal of the magazine  5 , the cocking device is automatically uncocked, which is explained in more detail, below, with the aid of  FIGS. 1-4 . 
     If the magazine  5  is found in the incorporation position, shown in accordance with  FIG. 1 , and the locking lugs  45  mesh into the corresponding indentations  47  in the magazine well  4 , then the front ends  41  of the rocker levers  36  are pressed upward by the upper border  42  on the housing  43  of the magazine  5 . In this way, the two pressure pins  35  are pressed downward against the forces of the pressure springs located around them. The blocking element  29 , also acted on, downward, by a spring which is not depicted, is likewise found in a lower position and the catch plate  25  fits tightly, with its rear, round end surface  27 , on the corresponding placement surface  28  of the blocking element  29 . In the position shown in  FIG. 1 , the cocking slider with the upper and lower cocking slider parts  13  and  14  is found in a lower uncocking position, in which the cocking pin  17  is retracted via the articulated lever  16  and the fork piece  15 , and the striker spring  48 , shown in  FIG. 3 , is uncocked. 
     If the cocking slider with an inserted magazine  5  is pushed from the lower uncocking position, shown in  FIG. 1 , into the cocking position, shown in accordance with  FIG. 2 , by pressure on the upper cocking slider part  13 , and in this way, the cocking pin  17  is pushed forward via the articulated lever  16  and the fork piece  15  in order to cock the striker spring  48 , shown in  FIG. 3 , the cocking slider can mesh by placement of the catch  21  on the mating catch  23  of the catch plate  25 , held by the blocking element  29  in the front catch position, as is shown in  FIG. 2 . The bolt is cocked in this position in which the rear end of the upper cocking slider part  13  is raised slightly from the breech housing  2 . 
     To uncock the bolt, the only thing needed is to press on the rear end of the upper cocking slider part  13 . In this way, the catch  21  on the lower cocking slider part  14  is pressed out, downward, from the mating catch  23  of the catch plate  25  and the cocking slider is again pressed back into its uncocking position, shown in  FIG. 1 , due to the effect of the striker spring  48 . 
     If, however, the magazine  5  is not inserted correctly or is taken out of the magazine well  4 , in accordance with  FIG. 3 , the front ends  41  of the rocker levers  36  can move downward, and, in this way, the pressure pins  35  can move upward due to the effect of the pressure springs. The blocking element  29  is raised by the pressure pins  35  moving upward, wherein the rear end  27  of the catch plate  25  is lifted out of the mating catch  28  on the blocking element  29 , and the catch plate  25  arrives at a rear detachment position, shown in  FIG. 3 , from the front catch position shown in  FIG. 2 , together with the cocking slider, due to the effect of the striker spring  48 . The cocking pin  17  is also retracted via the fork piece  15  and the articulated lever  16  and the striker spring  48  is uncocked. With the removal of the magazine  5 , therefore, the striker spring  48  is automatically uncocked. Only when the magazine  5  is again properly inserted and locked can the catch plate  25 , dragged along by the cocking slider during the pushing up, again arrive for placement with its lower end surface  27  at the placement surface  28  of the blocking element  29 , which is then, once again, lowered, wherein a renewed cocking of the striker spring  48  is made possible.

Technology Classification (CPC): 5