Patent Publication Number: US-11662170-B2

Title: Semi-automatic and full automatic working system at PCP air rifles

Description:
TECHNICAL FIELD 
     Invention relates to a system providing both semi-automatic and fully-automatic feature to PCP (pre-charged pneumatic) air rifles. While semi automatic or fully automatic feature is provided in PCP (pre-charged pneumatic) air rifles separately, PCP air rifle mentioned in working principle developed by us have both semi automatic and fully automatic operation capability. 
     BACKGROUND OF THE INVENTION 
     PCP air rifles are operated by means of an integrated air tube system mounted thereon and cocking catch. Air pressure of certain amounts contained in the tube produced in different volumes activates the mechanism. Thus, PCP air rifle can make effective firing up to 500 meters subject to pressure and tube volume. 
     Said PCP air rifles have semi or fully automatic operating principle. Semi-automatic rifles can make one firing per each triggering without need for setting after initial setting. With fully automatic rifles, firing can continue up to magazine capacity as long as the trigger is pulled without need to set again after initial setting. On the other hand, vibration occurring with rifles working fully automatically may negatively affect the magazine. 
     For rifles working on semi automatic working principle, firing can not be made as long as trigger remains pulled whereas for fully automatic rifles trigger must be released serially in order to stop firing after pulled in order to make one firing. 
     Purpose of the Invention 
     PCP air rifles having semi automatic and fully automatic working principle are provided with both semi automatic and fully automatic working by means of one single mechanism. 
     When user puts level lever in semi-automatic position by means of mechanical system provided, one single firing is made per one single trigger pulling upon one single setting for magazine. When user puts level lever in fully automatic position, firing continues as long as trigger is pulled upon one single setting. Thus, PCP air rifle is equipped with both semi automatic and fully automatic use feature. 
     On the other hand, a support part is added to fix the magazine in order to protect magazine against vibration occurring particularly during fully automatic firing. 
    
    
     
       Detailed Description of the Invention 
       DESCRIPTION OF FIGURES 
         FIG.  1    General View of Rifle 
         FIG.  2    View of Invention on Rifle 
         FIG.  3    Zoomed in View of Invention on Rifle 
         FIG.  4    Exploded View of Invention Parts 
         FIG.  4 A —Zoomed in view of level ball and level spring 
         FIG.  5    View of Position Ready for Fire in Semi Automatic Position 
         FIG.  6    View of Trigger Tab Pulling Hold Position for Next Firing for Fired Semi Automatic Rifle 
         FIG.  7    View of Fully Automatic Tab Pulling Hold Position where Trigger Pulled Lever Back for Fully Automatic Position Rifle 
         FIG.  8    View of Position where in Fully Automatic Position Trigger Pulled in Lever Fully Automatic Tab Opened when Cock Motion Completed 
         FIG.  9    View of Cock and Cock Lever 
         FIG.  10    View of Trigger Tab Stopper 
         FIG.  11    View of Level Lever 
         FIG.  12    View of Fully Automatic Tab 
         FIG.  13    View of Lever 
         FIG.  14    View of Magazine Support Part Body 
         FIG.  15    View of Magazine Support Part 
     
    
    
     REFERENCE NUMBERS 
     
         
           1 . Mechanism 
           2 . Pellet Pusher 
           3 . Pellet Pusher Pin 
           4 . Lever Wedge 
           5 . Lever 
           6 . Cock 
           7 . Trigger Tab 
           7 A. Connection housing 
           8 . Trigger Case 
           9 . Stopper Spring 
           10 . Level Lever 
           11 . Trigger Tab Stopper 
           11 A. Connection housing 
           12 . Semi Automatic Trigger Sheet 
           13 . Trigger 
           14 . Trigger Case Cover 
           15 . Fully Automatic Tab Spring Cover 
           16 . Fully Automatic Tab Pusher Spring 
           17 . Fully Automatic Tab Pusher Shell 
           18 . Support Screw 
           19 . Magazine Support Tab 
           20 . Magazine Support [KG1]   
           20 A. Level spring housing 
           21 . Support Pin 
           22 . Level Spring 
           23 . Level Ball 
           24 . Fully Automatic Tab Housing Cover 
           25 . Fully Automatic Tab 
           26 . Fully Automatic Tab Pusher Pin 
           27 . Wedge 
           28 . Projecting end 
           29 . Tail 
       
    
     This is an invention made to equip PCP air rifles with capability to operate fully automatically with the development made in our rifles having semi automatic working principle. One of the main components of the invention is the level lever ( 10 ) pressed by user to activate shifting from semi automatic to fully automatic system or from fully automatic system to semi automatic system for PCP air rifles. Mechanical operation structure changes with level lever ( 10 ) and thus PCP air rifle gains feature of both semi automatic and fully automatic operation feature. 
     When the level lever ( 10 ) shown in  FIG.  11    is in semi automatic position ( FIG.  5   ), trigger tab stopper ( 11 ) part in upside down T form does not make any attempt to stop trigger tab ( 7 ) thanks to stopper spring ( 9 ). When rifle is fired, cock ( 6 ) goes forward and then comes back and trigger tab ( 7 ) moves back and goes in front of semi automatic sheet ( 12 ), cock ( 6 ) is locked into trigger tab ( 7 ) again. Cock ( 6 ) is inserted into trigger tab ( 7 ) and motion forward is prevented and re-firing can not be made. When trigger ( 13 ) is released, semi automatic trigger sheet ( 12 ) goes above trigger tab ( 7 ) and becomes ready for firing. The motions are repeated and thus semi automatic operation is provided. 
     When level lever ( 10 ) is put in fully automatic position, trigger tab stopper ( 11 ) part moves upward by means of the connection housing ( 11 A) which has vertical rectangular form rounded on short edges. Thus trigger tab stopper ( 11 ) moves ahead of trigger tab ( 7 ). Whenever trigger ( 13 ) is pressed, cock ( 6 ) is released from trigger tab ( 7 ) and initiates firing. Thus trigger tab ( 7 ) leans on trigger tab stopper ( 11 ) part and is not released from semi automatic trigger sheet ( 12 ) and does not go into position to hold trigger cock ( 6 ). The cock ( 6 ) repeats firing motion. 
     For fully automatic firing, the cock ( 6 ) is to run in harmony with sheet pusher ( 2 ) combining pellet pusher pin ( 3 ) and lever wedge ( 4 ). Unless pellet pusher ( 2 ) motion is completed, next firing should not be made by the cock ( 6 ). In order to solve this issue, the mechanism ( 1 ) is added fully automatic tab ( 25 ) in form of plane without wings, which is shown in  FIG.  12   . 
     When the cock ( 6 ) returns, fully automatic tab pusher shell ( 17 ) and fully automatic tab pusher spring ( 16 ) having fully automatic tab spring cover ( 15 ) goes upward from fully automatic tab ( 25 ) tail ( 29 ) part. Thus fully automatic tab ( 25 ) allowed to move by fully automatic tab pusher pin ( 26 ) passing through hole in fully automatic tab ( 25 ) body leaves the balance position and goes in front of wedge ( 27 ) located on projecting end ( 28 ) of fully automatic tab ( 25 ) and thus holds the cock ( 6 ). Meanwhile, lever ( 5 ) connected onto lever wedge ( 4 ) goes back and takes front position and moves fully automatic tab ( 25 ) downward from tail ( 29 ) and provides release of cock ( 6 ) wedge ( 27 ) from projecting end ( 28 ) of fully automatic tab ( 25 ) and re-firing. This cycle continues synchronously until trigger ( 13 ) is re-released. 
     When cock ( 6 ) returns, the wedge ( 27 ) located on the cock ( 6 ) leans onto fully automatic tab ( 25 ) projecting end ( 28 ) and holds the cock ( 6 ) by means of the wedge ( 27 ) and prevents front motion of the cock ( 6 ). Then the lever ( 5 ) connected to pellet pusher ( 2 ) by means of lever wedge ( 4 ) comes back and moves forward and moves fully automatic tab ( 25 ) downward from the tail ( 29 ) and releases the cock ( 6 ). This mechanic operation continues until trigger ( 13 ) is released. Also during this operation, fully automatic tab ( 25 ) and the parts located around and fully automatic tab ( 25 ) are protected by fully automatic tab housing cover ( 24 ) and their removal is prevented. In addition, trigger case ( 8 ) containing trigger ( 13 ), semi automatic trigger sheet ( 12 ), trigger tab ( 7 ), trigger tab stopper ( 11 ) therein is protected by means of closing trigger case cover ( 14 ) In order to protect magazine against vibration occurring during firing, magazine support ( 20 ) is connected to magazine and lower part of magazine by support screw ( 18 ) as shown in  FIG.  1   . Magazine support tab ( 19 ) is connected to lower part of magazine support ( 20 ) in U shape by means of support pin ( 21 ). The magazine support tab ( 19 ) is pivotally connected to a lower part of the U shaped opening ( 20 B) of the magazine support ( 20 ). 
     While motion is provided by help of level spring ( 22 ), level feature is provided by means of level ball ( 23 ). While magazine housing is empty, magazine support tab ( 19 ) is protected thanks to foldable towards magazine housing as a result of such motion.