Sliding block breech mechanism for a cannon
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United States of America Patent
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Jan 9, 2007
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app pub date -
Nov 23, 2005
filing date -
Nov 23, 2005
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Abstract
The invention concerns a sliding block breech mechanism for a cannon with a breech ring arranged at the rear end of a cannon barrel and with a sliding breech block that slides perpendicularly to the longitudinal axis of the cannon barrel in a cavity of the breech ring.To achieve an improved distribution of force inside the breech ring when the cannon is fired compared to previously known sliding block breech mechanisms and thus to optimize the maximum stress load, the invention proposes to provide a sliding block breech mechanism whose sliding breech block has at least two lugs arranged axially one behind the other, wherein the pressure flanks of the first lugs, i.e., the lugs closer to the cannon barrel, have a positive direction of inclination, and the pressure flanks of the second lugs have a negative direction of inclination. The directions of inclination of the pressure flanks of the roots of the walls of the breech ring, which roots correspond to the lugs, correspond to the directions of inclination of the pressure flanks of the two lugs of the sliding breech block.
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