ut equal to that at the extremityof the muzzle. The breech was 4J^ inches in diameter, and the length 3)^ feet. Just forward of the trunnions, at thepoint F, the muzzle unscrewed; this construction was neces-sary to permit the placing of the gas check in position. Thesectional view of the gun is… … KEELY GUN.-LONGITUDINAL SECTION. tion. A sleeve, c, having a bore equal to that of the gunfitted in an annular recess in the forward part of the breech,F. As the muzzle was screwed upon, the sleeve was forcedin until it Srmly held the gas check placed between the rearend of the sleeve and a…
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