초록 ▼

Height and length are adjustable at several points. There is a special type of vise for holding the gunstock. As usual, the vise bolt pulls the movable plate toward the fixed one but, like some of the vise's predecessors, traces out an arc at the top, pivoting from the bottom as the bolt, situated j

Height and length are adjustable at several points. There is a special type of vise for holding the gunstock. As usual, the vise bolt pulls the movable plate toward the fixed one but, like some of the vise's predecessors, traces out an arc at the top, pivoting from the bottom as the bolt, situated just above the pivot, is turned. Within the movable plate a special cylinder is situated which gives and turns freely in response to the bolt's advance and withdrawal in passing through a threaded tunnel within it. This action prevents the biting down or binding upon the bolt which would otherwise occur because of the plate's pivoted travel as the bolt is advanced or withdrawn. The support's framework, best made from economical tubular bar-stock, is adjustable for leveling and leaning corrections and include anchoring blocks within the structure through which leveling bolts pass.

대표청구항 ▼

The invention claimed is: 1. A firearm support assembly comprising a frame of general horizontal orthogonal configuration, thereby comprising mutually attached longitudinal and lateral components; a front support; and a rear support; the front support comprising a cradle in turn comprising a gener

The invention claimed is: 1. A firearm support assembly comprising a frame of general horizontal orthogonal configuration, thereby comprising mutually attached longitudinal and lateral components; a front support; and a rear support; the front support comprising a cradle in turn comprising a generally horizontally disposed firearm barrel rest supported upon a downwardly extending neck; a vertical extension disposed by attachment to the frame; and a vertical positioning sleeve and set pin subassembly wherein the height of the cradle is adjusted and rigidly emplaced along a vertical portion of the frontal support; the rear support comprising a longitudinal positioning sleeve and set pin subassembly wherein the rear support's disposition is adjusted and rigidly emplaced along the frame's longitudinal component; a maximal force-attenuating third class lever vise comprising a fixed plate; a movable plate; a retraction bolt; a fulcrum-pivot; an elongated coil-spring; and a lag cylinder; wherein the fixed plate and fulcrum-pivot are attached to the sleeve of the longitudinal positioning sleeve and set pin subassembly's in lateral opposition to one another; the coil-spring is biased to force the fixed and movable vise plates apart and the retraction bolt thereof is longitudinally disposed within the coil-spring; the lag cylinder is disposed by rotable emplacement within the a lag cylinder seating tunnel disposed in turn within the movable plate generally parallel the assembly's longitudinal component; and the cylinder is configured in turn with a threaded diametric tunnel within which the retraction bolt is caused to interthread, whereby the movable plate's uppermost extremity is caused by reason of the screw retraction principles to circumferentially tilt inward and outward upon the bolt's respective advance or withdrawal. 2. The firearm support assembly according to claim 1 further comprising a plurality of support spacers disposed to provide a base suspended upwards from the underlying surface. 3. The firearm support assembly according to claim 1 further comprising a plurality of fine vertical positioning bolt assemblies disposed to provide a base of adjustment stability. 4. The firearm support assembly according to claim 1 wherein the frame's orthogonal configuration comprises a T-shape. 5. The firearm support assembly according to claim 1 comprising tubular members and one or more screw anchoring channel blocks disposed within them to accommodate the support level pin of each fine vertical positioning bolt assembly. 6. The firearm support assembly according to claim 1 wherein the base of adjustment stability provided by the disposition of the fine vertical positioning bolt assemblies is triangular. 7. The firearm support assembly according to claim 1 wherein the cradle's firearm barrel rest is V-shaped. 8. The firearm support assembly according to claim 1 wherein the cradle's neck comprises the sleeve of the vertical positioning sleeve and set pin subassembly and is configured and disposed to longitudinally envelope the assembly's vertical extension. 9. The firearm support assembly according to claim 1 wherein the vertical extension comprises the sleeve of the vertical positioning sleeve and set pin subassembly and is configured and disposed to longitudinally envelope the cradle's neck. 10. The firearm support assembly according to claim 1 wherein one or more members of the frame, vertical extension and vise plates comprise solid configuration. 11. The firearm support assembly according to claim 1 wherein one or more of the positioning sleeve and set pin subassemblies comprise a series of receptor holes to accommodate a non-threaded pin. 12. The firearm support assembly according to claim 1 wherein the cross-sectional configuration of the assembly's members is square. 13. The firearm support assembly according to claim 1 wherein the front support's vertical extension is generally orthogonally disposed at the intersection of the T's longitudinal and lateral components. 14. The firearm support assembly according to claim 1 further comprising a cradle pad and a vise pad. 15. The firearm support assembly according to claim 1 wherein one or more of the positioning sleeve and set pin subassemblies comprises threaded mounted nut apertures disposed to accommodate a threaded pin. 16. The firearm support assembly according to claim 1 wherein the distance from the fulcrum-pivot to the point of applied force provided by the retraction bolt is not greater than one-quarter the height of the movable plate; thereby further attenuating the gripping force at the plate's uppermost extremity. 17. A firearm support assembly comprising a T-shaped frame; a front support; and a rear support; the front support in turn comprising a cradle the height of which is adjustable by means of a vertical positional sleeve and set pin subassembly; the rear support in turn comprising a longitudinal positioning sleeve and pin subassembly for positional adjustment along the frame's longitudinal component; and a maximal force-attenuating third class lever vise disposed by attachment to the sleeve of the positioning subassembly; the assembly further comprising a rotable vise lag cylinder disposed within a vise lag cylinder tunnel in turn disposed within the vise's movable plate and oriented in disposition generally parallel to the frame's longitudinal component; the lag cylinder comprising a diametrically disposed threaded tunnel within which the vise's retraction bolt is configured and disposed to interthread; wherein, by reason of the cylinder's rotability and the vise's retraction bolt's interthreaded engagement with it, the vise's movable plate is caused to tilt inward and outward without cranking against the bolt upon its respective advancement and withdrawal; the assembly further comprising one or more fine vertical positioning bolt assemblies disposed upon the frame to permit adjustment in leveling and camber; and screw anchoring channel blocks disposed to accommodate the support level pin of each thereof.