breechblock उदाहरण वाक्य

Believing an explosion imminent within the breechblock of one of the ship's guns, Cronan shoved his hand within the block to prevent its closing.
Thus connected, complete motion of the operating lever to the right will cause the breechblock to rotate and to be swung clear of the breech recess.
Swinging the operating lever fully to the right engages cam surfaces of the breechblock carrier and extractor, causing the extractor to eject the empty cartridge case.
A rolling block is a form of firearm action where the sealing of the breech is done with a specially shaped breechblock able to rotate on a pin.
Its lesser arm ( upper ) continuously presses a cam upward that engages a slot in the under surface of the breechblock slide when the action is closed.

As the breechblock goes forward, the extractor mounted in the top of the block will snap over the extracting groove of the cartridge as it is chambered.
A safety lock prevented opening of the breechblock before the shot; if there was a need to remove a shell, the lock had to be disabled.
Gas ports along the upper ridges of the receiver were also extended, which may explain why the arch on the breechblock was removed at the same time.
For the " Lund conversion ", the chamber was replaced with a breechblock, and an extractor was mounted on the left side of the receiver.
The barrel, much longer than that of older designs, was fitted with an interrupted screw breechblock with recoil devices consisting of hydraulic recoil buffer and hydropneumatic recuperator.