초록 ▼

The present invention relates to improvements in firing and cocking mechanism of a breach loading firearm. This invention utilizes a substantially massive pin block disposed in a horizontal track between two counter biasing springs, the main spring and the counter spring. A firing pin extends from t

The present invention relates to improvements in firing and cocking mechanism of a breach loading firearm. This invention utilizes a substantially massive pin block disposed in a horizontal track between two counter biasing springs, the main spring and the counter spring. A firing pin extends from the chamber end of the pin block. When the cocked pin block is released, the main spring drives it toward the chamber and the momentum of the moving pin block carries the extended firing into contact with the primer of the cartridge despite the resistance of the counter spring. Lowering the breechblock allows a spring loaded ejector plate to spring backward and pull the spent cartridge casing from the chamber. In addition the ejector plate strikes a projection of the pin block and drives the pin block back to the cocked position. An extension of a lever which operates the action returns the ejector plate to the chamber so that the breechblock is able to rise unobstructed. Lost motion pivots connecting this lever to the breechblock provide the timing whereby one return stroke of the lever sequentially seats the ejector and raises the breechblock. The trigger release mechanism for this firearm is simply constructed from a very limited number of ruggedly manufactured parts.

대표청구항 ▼

A mechanism within a firearm having a falling breechblock action, said breechblock being disposed for vertical reciprocation within a slot defined by the breech housing which is set between a chamber and a rear stock, said chamber being of a configuration to receive a cartridge having a percussion s

A mechanism within a firearm having a falling breechblock action, said breechblock being disposed for vertical reciprocation within a slot defined by the breech housing which is set between a chamber and a rear stock, said chamber being of a configuration to receive a cartridge having a percussion sensitive primer, said mechanism comprising: an elongated horizontal track within said breechblock; a back wall of said breechblock closing one end of said elongated horizontal track; a chamber fore wall of said breechblock opposite said back wall and substantially closing the other end of the elongated horizontal track; a momentum drivable pin block disposed in said track, said pin block having a chamber end and a back end; a firing pin extending from the chamber end of said pin block; an aperture through said chamber fore wall of said breechblock through which said firing pin is extendable into said chamber for striking said primer; a counter spring disposed in said track between said pin block and said chamber fore wall of said breechblock whereby said firing pin is biased away from the immediate area of said chamber; a main spring set between the back end of said pin block and the back wall of said elongated horizontal track whereby said main spring, when cocked, exerts a force on said pin block urging it toward the chamber; a trigger assembly mounted on said breechblock whereby said pin block is first held in a cocked position against the force of said main spring, then released at a selected time to fire the cartridge, being driven first by said main spring and carried through to firing pin-primer impact by the momentum of said travelling pin block; means for ejecting cartridge after firing, said means comprising: an ejector plate disposed for seating flush against the chamber, set between the chamber and the chamber fore wall of said breechblock when said breechblock is in a raised position; said ejector plate being engagable with the rim of a chambered cartridge; an elongated ejector stem having a plate end to which said ejector plate is connected and a plunger end opposite said plate end, said ejector stem providing a means whereby said ejector plate is horizontally and telescopically extendable away from said chamber; and an ejector spring engaging said ejector stem at its plunger end whereby said ejector stem and attached ejector plate are urged toward an extended position; whereby, when said breechlock is lowered and the chamber fore wall drops from horizontal alignment with said ejector plate, said ejector plate springs rearward and pulls the cartridge from the chamber after firing; means for cocking said pin block, said means comprising: a pin block arm extension of said pin block; and said ejector plate being disposed to engage said pin block arm upon ejecting a cartridge after firing from said chamber and to drive said pin block to its cocked position; whereby said pin block is driven rearward, against the force of the main spring, by the force of the ejector spring and once pushed back, the trigger assembly engages said pin block to releasably secure the cocked position; means for returning said ejector plate to its seated position; and means to lower and raise said breechblock.