SEALING MECHANISM FOR ARTILLERY GUN LOADING PORT Russian patent published in 2012 - IPC F41A3/74 F41F1/00 

FIELD: artillery.

SUBSTANCE: mechanism has a lug on the upper panel of the chamber frame. The lug has a vertical passage used to deliver grain powder into the chamber. Another channel with a revolving crane inside is placed in relation to the normal of the vertical channel. The external surface of the revolving crane has grooves forming a complete rectangle with two radial through-holes. The two radial through-holes cross the tapered grooves and the central axial bottom holes in the revolving crane.

EFFECT: loading port sealing mechanism design simplification.

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