Single-shot falling breech block action

A method of using a single shot falling breech block action, comprising the steps of:

• a) rotating a slender and cylindrically-shaped finger lever of a lower receiver assembly of said single shot falling breech block action clockwise;
• b) rotating a horizontal pinion of said lower receiver assembly clockwise;
• c) walking said horizontal pinion rearwardly along a horizontal stationary rack of said lower receiver while being guided therealong by a pinion guide throughslot in a generally rectangular-shaped lower receiver of said lower receiver assembly;
• d) sliding a generally rectangular-shaped action plate of said lower receiver assembly rearwardly in a horizontal action plate raceway slot in a pair of parallel and opposing vertical walls of said generally rectangular-shaped lower receiver;
• e) causing a cocking boss of a rear extension of said generally rectangular-shaped action plate to abut against and begin to move a front convex cocking surface of a generally convexo-concave and vertical cocking portion of a firing pin of a breech block assembly of said single shot falling breech block action rearwardly, against the biasing of a firing pin spring of said firing pin;
• f) sliding a horizontal movable rack of said lower receiver assembly rearwardly at twice the speed of said cocking boss, by virtue of said horizontal pinion also moving rearwardly as it rotates;
• g) sliding a laterally-and-inwardly-oriented and cylindrically-shaped stud of said horizontal movable rack rearwardly in a horizontal front slot portion of a movable rack stud slot of an outer surface of a hollow and generally rectangular-parallelepiped-shaped breech block of said breech block assembly until a firing pin tip of said firing pin is pushed out of a primer of a spent cartridge;
• h) sliding said laterally-and-inwardly-oriented and cylindrically-shaped stud upwardly and rearwardly in a straight line in an inclined intermediate portion of said movable rack stud slot;
• i) sliding said hollow and generally rectangular-parallelepiped-shaped breech block downwardly in a breech block throughraceway in a generally rectangular-parallelepiped-shaped body of an upper receiver assembly and a breech block throughraceway in said generally rectangular-shaped lower receiver;
• j) rotating said slender and cylindrically-shaped finger lever clockwise;
• k) causing said cocking boss to continue to move said front convex cocking surface rearwardly, against the continual biasing of said firing pin spring;
• l) sliding said laterally-and-inwardly-oriented and cylindrically-shaped stud rearwardly in a horizontal rear slot portion of said movable rack stud slot until an inwardly-and-upwardly-tapering projection of a horizontal top of a sear of a trigger assembly of said single shot falling breech block action replaceably engages a mating inwardly-and-upwardly-tapering recess in a horizontal bottom of a generally rectangular-parallelepiped-shaped main portion of said firing pin;
• m) maintaining said inwardly-and-upwardly-tapering projection in said mating inwardly-and-upwardly-tapering recess, by the biasing of a sear spring of said sear;
• n) pivoting a generally concavo-convex-shaped vertical trigger of said trigger assembly forwardly about a lowermost pin of a pair of trigger housing mounting pins of said trigger assembly, by the biasing of a trigger spring of said trigger assembly, until a horizontal top of a rectangular-parallelepiped-shaped block of said trigger assembly generally concavo-convex-shaped vertical trigger abuts against a horizontal bottom of said sear and an extractor boss of said rear of said generally rectangular-shaped action plate abuts against a front of a generally rectangular-parallelepiped-shaped extractor of said lower receiver assembly, so that said single shot falling breech block action is now fully cocked;
• o) rotating said slender and cylindrically-shaped finger lever slightly clockwise until said extractor boss pivots said generally rectangular-parallelepiped-shaped extractor rearwardly and extracts a spent cartridge;
• p) rotating said slender and cylindrically-shaped finger lever slightly counterclockwise, so that said single shot falling breech block action is returned to fully cocked;
• q) sliding a substantially U-shaped trigger guard of said trigger assembly forwardly with a pair of spaced-apart longitudinal sides of a substantially C-shaped horizontal safety plate of said substantially U-shaped trigger guard sliding forwardly in a trigger safety raceway in an inner surface of each side of a pair of parallel, vertical, and opposing sides of said hollow and generally rectangular-parallelepiped-shaped breech block until a vertical safety boss of said trigger assembly trigger guard substantially C-shaped horizontal safety plate engages a trigger safety recess in said horizontal top of said rectangular-parallelepiped-shaped block and a trigger safety plunger of said substantially U-shaped trigger guard releaseably engages a forwardmost detent of a pair of spaced-apart trigger safety plunger detents in said inner surface of a side of said pair of parallel, vertical, and opposing sides, so that said generally concavo-convex-shaped vertical trigger is prevented from being pulled and said sear is prevented from dropping and said single shot falling breech block action is prevented from being fired;
• r) rotating said slender and cylindrically-shaped finger lever counterclockwise;
• s) sliding said laterally-and-inwardly-oriented and cylindrically-shaped stud forwardly in said horizontal rear slot portion of said movable rack stud slot;
• t) sliding said laterally-and-inwardly-oriented and cylindrically-shaped stud downwardly and forwardly in said inclined intermediate slot portion of said movable rack stud slot;
• u) sliding said laterally-and-inwardly-oriented and cylindrically-shaped stud forwardly in said horizontal front slot portion of said movable rack stud slot;
• v) sliding said breech block assembly upwardly in said breech block throughraceway in said generally rectangular-shaped lower receiver and said breech block throughraceway in said generally rectangular-parallelepiped-shaped body;
• w) closing said single shot falling breech block action;
• x) sliding said substantially U-shaped trigger guard rearwardly with said pair of spaced-apart longitudinal sides of said substantially C-shaped horizontal safety plate sliding rearwardly in said trigger safety raceway, until said vertical safety boss is released from said trigger safety recess and said trigger safety plunger releaseably engages a rearmost detent of said pair of spaced-apart trigger safety plunger detents, so that said generally concavo-convex-shaped vertical trigger of said trigger assembly can be pulled and said sear can drop and said single shot falling breech block action can be fired;
• y) pulling said generally concavo-convex-shaped vertical trigger against the biasing of said trigger spring;
• z) releasing hold of said generally concavo-convex-shaped vertical trigger on said sear;
• aa) moving said firing pin rapidly forwardly, by virtue of said firing spring being stronger than said sear spring;
• bb) releasing said inwardly-and-upwardly-tapering projection of said sear from said inwardly-and-upwardly-tapering rear recess of said horizontal bottom of said generally rectangular-parallelepiped-shaped main portion of said firing pin of said breech block assembly;
• cc) forcing said sear downwardly;
• dd) extending a firing pin tip of said firing pin through a firing pin tip throughbore in a vertical and substantially open front of said hollow and generally rectangular-parallelepiped-shaped breech block, so that said single shot falling breech block action has been fired;
• and
• ee) repeating steps a) through dd) to refire, if desired.

A method preparing a single shot rifle for firing, comprising the step of activating a single shot falling breech block action which comprises:

• a) an upper receiver assembly;
• said upper receiver assembly having generally rectangular-parallelepiped-shaped body with a vertical front and a vertical rear being disposed behind said vertical front of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly;
• said generally rectangular-parallelepiped-shaped body of said upper receiver assembly further having a horizontal top extending from said vertical front of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly to said vertical rear of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly;
• said generally rectangular-parallelepiped-shaped body of said upper receiver assembly further having a horizontal bottom being disposed below said horizontal top of said assembly generally rectangular-parallelepiped-shaped body of said upper receiver assembly and extending from said vertical front of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly to said vertical rear of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly;
• said generally rectangular-parallelepiped-shaped body of said upper receiver assembly further having a pair of opposing and vertical sides;
• each side of said pair of opposing and vertical sides of said generally rectangular-parallelepiped, shaped body of said upper receiver assembly extending from a side of said vertical front of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly to a respective side of said vertical rear of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly and from a side of said horizontal top of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly to a respective side of said horizontal bottom of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly;
• said generally rectangular-parallelepiped-shaped body of said upper receiver assembly further having an imaginary intermediate vertical plane being disposed at a substantial midpoint between said vertical front of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly and said vertical rear of said generally rectangular-parallelepiped-shaped body of said upper receiver assembly;
• b) a lower receiver assembly being replaceably attached to said upper receiver assembly;
• c) a breech block assembly being replaceably and vertically slidably mounted in said lower receiver assembly and said upper receiver assembly;
• d) a trigger assembly being replaceably mounted in said breech block assembly;
• e) a stationary rack being replaceably and fixedly attached in said lower receiver assembly;
• f) a movable rack being replaceably and forwardly and rearwardly slidably mounted in said lower receiver assembly and being engagable with said breech block assembly;
• g) a pinion being clockwise and counterclockwise rotatively, and forwardly and rearwardly movably, positioned in said lower receiver and being rotatively engaged with said stationary rack and said movable rack;
• h) an action plate being forwardly and rearwardly slidably mounted in said lower receiver assembly and being rotatively attached to said pinion, so that said pinion can rotate relative thereto;
• said action plate being abutable against said breech block assembly;
• and
• i) pinion rotating means for rotating said pinion, so that when said pinion rotating means is rotated clockwise said pinion is rotated clockwise and walks rearwardly along said horizontal stationary rack while said action plate slides rearwardly and begins to cock said single shot falling breech block action and said movable rack slides rearwardly and causes said breech block assembly to slide downwardly to load a cartridge and when said pinion rotating means is rotated counterclockwise said pinion is rotated counterclockwise and walks forwardly along said horizontal stationary rack while said action plate slides forwardly and said movable rack slides forwardly and causes said breech block assembly to slide upwardly and fully cocking said single shot falling breech block action.