Patent ID: 8413565

Claim:
A drive provided with a quick stop device operably connected to a breech, or breech support, of a weapon, wherein the breech or breech support is moveable between a front limit position and a rear position in an axial direction with respect to a weapon barrel of the weapon, wherein the drive comprises: (a) at least one motor; (b) two chains arranged to run in opposite directions with respect to each other; (c) a plurality of sprocket wheels around which the chains are passed, wherein the at least one motor is operably connected to rotate the plurality of sprocket wheels so as to set the two chains in motion in opposite directions; (d) a driver stud and a control stud are integrated on each chain; (e) a slide is mounted at a bottom of the breech so that the slide is moveable transversely with respect to a firing direction of the weapon, wherein a groove is located in the slide so that the driver stud on each chain is moveable to engage the groove in order to drive the breech forward and backward in the firing direction between the front limit position and the rear position, wherein a first chain of the two chains moves to drive the breech forward in the firing direction and a second chain of the two chains moves to drive the breech backward in the firing direction, wherein times in which the breech is stationary in the front limit position are implemented when the driver stud of the first chain that transports the breech forward is moved out of the groove, while at the same time the slide is moved to a central position via engagement of a run-on ramp of the slide with the control stud on the first chain, and when a shot has been fired, the slide is moved from the central position to a left hand position of the left hand side of the weapon, and wherein the slide remains in the central position when no shot has been fired so that none of the driver studs of the two chains are positioned to drive the breech to the rear position.