Pistol with a rotating closing device
A pistol comprising a barrel having a combustion chamber and slide translatable between an advanced configuration closing the combustion chamber, and a retracted configuration opening the chamber and in both configurations is substantially parallel to a longitudinal axis. The slide has a locking seat and longitudinal grooving. A closing organ rotatable with respect to the axis between a first and a second angular position and an element drawing in rotation the closing organ and fixed to the fore-end. The closing organ has a locking relief and a cam taking the rotation from the at least one element drawing in rotation. In the advanced configuration, the closing organ is in the first angular position so the locking relief engages the locking seat and the barrel and slide constrain each other, in the retracted configuration the closing organ is in the second angular position wherein the locking relief disengages from the locking seat and slides along the grooving so the slide can retract with respect to the barrel.
1. A pistol comprising:
a pistol fore-end;
a barrel, supported by the pistol fore-end, which proximally has a combustion chamber extending along a longitudinal axis;
a slide, translatable longitudinally with respect to the pistol fore-end between an advanced configuration in which it closes the combustion chamber, and a retracted configuration in which it is distanced from the barrel to open said chamber, the orientation of the combustion chamber in the advanced configuration and in the retracted configuration being substantially parallel to said axis, said slide comprising a first locking seat, at least a second locking seat, a first longitudinal grooving and at least a second longitudinal grooving;
said pistol comprises:
a closing organ rotatable around said axis between a first and a second angular position;
at least one element drawing in rotation the closing organ and fixed to the fore-end, said closing organ comprising a first locking relief, at least a second locking relief and at least one cam taking the rotation over from said at least one element for drawing in rotation, said closing organ, in the advanced configuration of the slide, being in said first angular position in which said first and respectively second locking relief engage said first and respectively second locking seat so as to make the barrel and the slide solidly constrained to one another, said closing organ, in the retracted configuration of the slide, being in said second angular position in which said first and respectively second locking relief disengage from said first and respectively second locking seat and slide along said first and respectively second longitudinal grooving present internally on opposite longitudinal walls of the slide so as to enable a balanced and reproducible retraction movement of the slide with respect to the barrel.
2. The pistol according to claim 1 , wherein said element for drawing in rotation is a drawing pin, comprising a dismounting pin of the slide from the pistol fore-end separate and structurally independent from said at least one drawing element.
3. The pistol according to claim 2 , wherein said drawing element is a pin having a smaller diameter than said dismounting pin.
4. The pistol according to claim 2 , wherein said drawing pin is inclined with respect to the dismounting pin.
5. The pistol according to claim 1 , wherein said at least one cam is made in the form of a recess having a helical extension.
6. The pistol according to claim 1 , wherein said recess extends about said longitudinal axis.
7. The pistol according to claim 1 , wherein said closing organ has an internal surface with a cylindrical sector conjoined to the external surface of the barrel and an external surface with a cylindrical sector along which said cam extends.
8. The pistol according to claim 7 , wherein said at least one locking relief is projecting from said external surface with a cylindrical sector.
9. The pistol according to claim 1 , further comprising an angle between said first angular position and said second angular position is comprised between 10° and 30°.
10. The pistol according to claim 1 , wherein the closing organ is solidly constrained in translation to the barrel.
11. The pistol according to claim 1 , wherein said barrel has at least one internal grooving having a helical extension along the axis X with a right-hand or left-hand engagement, and in that between the advanced configuration and the retracted configuration said closing organ rotates in an opposite direction to the engagement direction of said grooving.