Abstract:
The disclosed apparatus is a scissor-style action to be mounted to a firearm. In one embodiment the firearm is a semi-automatic firearm prior to removal of the stock action and attachment of the disclosed action. In one particular embodiment, the firearm is a rifle sold by the Ruger® company under the model name 10/22.

Description:
RELATED APPLICATIONS 
     This application is a Continuation of U.S. Ser. No. 13/463,191 filed on May 3, 2012 claiming priority of U.S. Ser. No. 61/482,395 filed May 4, 2011 incorporated herein by reference. 
    
    
     BACKGROUND OF THE DISCLOSURE 
     Field of the Disclosure 
     This disclosure relates to the field of firearm actions and associated components. 
     SUMMARY OF THE DISCLOSURE 
     Disclosed herein is an action assembly for a rifle. The action assembly comprising: an improved bolt having at least one stud extending upwards therefrom; a front lever pivotably attached at a forward end to the modified bolt; a rear lever having a forward end pivotably attached to a rear portion of the front lever; a toggle handle fixedly coupled to the rear lever; the rear lever having pivotably coupled to a rearward end of a top rail; the top rail having a plurality of attachment points to facilitate attachment to a receiver of the rifle; and the top rail further comprising at least one surface defining a channel guide for linear repositioning of the stud therein. 
     The action assembly as disclosed above may be arranged wherein the rifle is a rifle sold by the Ruger company under the model name 10/22. 
     The action assembly may specifically be arranged wherein the receiver is a stock receiver which has been modified to accept the attachment points of the top rail. 
     The action assembly as disclosed has the advantage that upon firing of a cartridge, the bolt remains stationary until the toggle handle is manually actuated. Normally this is accomplished by the person shooting. 
     A method for retrofitting a rifle to a scissor-style bolt action is also disclosed. The method comprising the steps of: removing the bolt of the rifle; replacing the bolt with a modified bolt having at least one stud extending upwards therefrom; pivotably attaching a forward end of a front lever to the modified bolt; pivotably attaching a forward end of a rear lever to a rear portion of the front lever; fixedly coupling a toggle handle to the rear lever; pivotably coupling a rearward end of the rear lever to a rearward end of a top rail; attaching the top rail to a receiver of the rifle; and wherein the top rail further comprises at least one surface defining a channel guide for linear repositioning of the stud therein. 
     The method for retrofitting a rifle to a scissor-style bolt action is particularly suited wherein the rifle is a rifle sold by the Ruger company under the model name 10/22. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an isometric view of portions of a firearm according to one example of the disclosure. 
         FIG. 2  is an exploded view of the example of  FIG. 1  with several components removed to show the underlying components with several components removed to show the underlying components. 
         FIG. 3  is an exploded view of the example of  FIG. 1  with several components removed to show the underlying components. 
         FIG. 4  is a detail view of several internal components of the example of  FIG. 1  with several components removed to show the underlying components. 
         FIG. 5  is a detail view of several components of  FIG. 4  with several components removed to show the underlying components. 
         FIG. 6  is a detail view of several internal components of the example of  FIG. 1  with several components removed to show the underlying components. 
     
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Before beginning a detailed description, an axes system  10  is disclosed comprising a longitudinal axis  12 , a vertical axis  14 , and a transverse axis  16 . These axes are to be used to assist in explanation, and are not intended to limit the disclosure to any particular orientation. 
     The term “10-22” as used in this disclosure is defined as the rifle manufactured by Ruger® at the time of invention. Similarly, the term “10-22 action” for this disclosure is defined as the action manufactured by Ruger® for the 10-22 rifle at the time of invention. 
     Looking to  FIG. 1 , an action unit  20  is shown for use with a trigger housing and barrel. 
     The unit  20  shown in  FIG. 1  may utilize a trigger housing  24  and several other components. Also shown is a trigger  26  and magazine (mag) release  28 . In the remainder of the Figs., the barrel  22  has been removed to more adequately show the remaining components. Many of these components can be seen partially through the wireframe view of the receiver  30  shown in  FIG. 1 . This receiver  30  would not normally be made of a transparent material. 
     Looking to  FIG. 2 , an exploded view is shown comprising the receiver  30 , main body, trigger housing  24 , magazine (mag) release  28  and other components. 
     These components are also shown in another exploded view,  FIG. 3 . The mag release  28  of this example fits within the trigger housing  24  and pivots about pivot location  32 . The pivot location  32  aligns with pivot location  34  on the trigger housing and pin  36  passes therethrough to allow the mag release  28  to pivot when actuated. The upper edge  38  of the mag release engages the magazine catch  40 , which has a forward surface  42  that engages the magazine and holds it within the magazine well of the receiver  30 . A spring is shown which repositions the magazine catch  40  towards the magazine unless repositioned by pivoting of the mag release  28 . 
     The trigger  26  also fits within the trigger housing  24  and is partially protected by the trigger guard  44 . The trigger  26  pivots about pivot  46  (see  FIG. 2 ), which operates with a pin that passes through the surface defining the void  48  in the trigger housing  24 . When the safety  50  is released, the trigger  26  is allowed to rotate or pivot. The trigger  26  of this example is also coupled through the pin  46  to a first seer  54 , which engages the hammer  56 . A second seer  58  is also coupled to the trigger  26  through a pivot  60 , utilizing another pin that passes through voids  62 . The second seer  58  also engages the hammer  56 . Hammer  56  rotates about pin  64 , which passes through voids  66  in the hammer  56  and void  68  in the trigger housing  24 . A spring  70  engages the forward portion  72  of the trigger  26 , as well as the hammer  56 , to reposition the hammer  56  upward/forward when released by the seers  54  and  58  to engage the rear portion of a firing pin  74 , repositioning it forward to engage the edge portion of a rifle cartridge  76 . In one form, the cartridge is a rim fire, .22 caliber long rifle cartridge. 
     In a standard Ruger 10/22 and other firearms, firing of the cartridge  76  would reposition the bolt  78 , firing pin  74 , and hammer  56  rearward/downward, whereupon the following cartridge would be repositioned from the magazine into the firing location shown in  FIG. 1 , whereupon activation of the trigger  26  again would fire this new cartridge. 
     This embodiment, utilizing a improved bolt  78  and other components, holds the improved bolt  78  in a forward position following firing, to increase the muzzle velocity of the ejected bullet and also to increase accuracy of the firearm. In one form, this is accomplished as the center of the pivot provided by extension  104  and void  106 , is past the line extending between the centers of the pivot  86  and the pivot provided at surface  112 . Thus, when the rifle fires, the force is not translated to movement of the levers  82 / 84  toward the toggle handle, but rather is directed rearwards, with a small force directed to rotate the front lever  84  towards the surface  114  of the bolt which therefore prohibits movement in that direction. This conversion results in a bolt action rifle commonly known to biathletes, where upon firing, the user reaches up with his fingers to engage the toggle handle. The toggle handle  80  is rigidly fixed to the rear lever  82 , which is pivotably coupled to a front lever  84 . These components can be more easily seen in the assembled view of  FIG. 4 . The rearward portion of the rear lever  82  comprises a pivot  86  fitted to a rear lever pin  88  that also engages a void  90  in a top rail  92 . As can be seen in  FIG. 6 , the top rail  90  is attached via screws  94  or other attachment devices to the receiver  30 . In one form, a plurality of channel guides  96  and  98  allow for the bolt  78  to reposition longitudinally as a plurality of studs  100  and  102  extend upwards from the bolt  78 . 
     Looking to  FIG. 3  again, an extension  104  can be seen extending downward from the rear lever  82  and engaging a void  106  in the front lever  84 . As the rear lever  82  pivots about the rear lever pin  88  centered upon and pivotably connected to void  108  of the top rail  92 , and the front lever  84  comprises a surface  112  which allows the front lever  84  to pivot about a stud or pivot pin  110 . The front lever  84  and rear lever  82  operate generally in a scissor-like manner as the toggle handle  80  is repositioned outward and rearward by the user. This movement results in a sliding action of the bolt  78  rearward to eject the spent cartridge  76  and in one embodiment allows for insertion of a new cartridge  76  upward and forward from the clip (not shown), or in another embodiment allows for single cartridge insertion by a user/shooter. 
     This structure allows for the user to eject and reload a cartridge without substantial movement of their body, as a simple finger movement can function to reposition the toggle handle  80  rearward and outward and again forward and inward to eject and insert shells. This movement also re-sets the seers, trigger assembly and/or firing pin. 
     While the present invention is illustrated by description of several embodiments and while the illustrative embodiments are described in detail, it is not the intention of the applicants to restrict or in any way limit the scope of the appended claims to such detail. Additional advantages and modifications within the scope of the appended claims will readily appear to those sufficed in the art. The invention in its broader aspects is therefore not limited to the specific details, representative apparatus and methods, and illustrative examples shown and described. Accordingly, departures may be made from such details without departing from the spirit or scope of applicants&#39; general concept.