Gun misfire control

An automatic gun having an operating cycle including load, lock, fire and unlock operations in sequence;

• a gun barrel having a gun bore and a projectile and propellant receiving chamber;
• first means for closing and locking said chamber;
• second means for firing propellant disposed within said chamber;
• third means for operating said first means to close and lock said chamber, for subsequently operating said second means for firing any propellant disposed within said chamber, and for yet subsequently operating said first means to unlock and open said chamber, including a first cam rotating in synchronism with the operating cycle of said gun and controlling said operating cycle;
• fourth means coupled to said gun barrel and to said third means for detecting the firing of propellant within said chamber and in the absence of such detection, for positively halting the operation of said third means after the time for firing by said second means and before the time for unlocking by said first means, including detent means having a first position whereat it clears said first cam, and a second position whereat it positively halts said first cam at a first predetermined angular orientation of said first cam;
• and said first cam including additional means to cyclically set said detent means to said second position at a second predetermined orientation of said first cam.

An automatic gun having an operating cycle including load, lock, fire and unlock operations in sequence;

• a gun barrel having a gun bore and a projectile and propellant receiving chamber;
• first means for closing and locking said chamber;
• second means for firing propellant disposed within said chamber and for generating gas pressure in said chamber;
• third means for operating said first means to close and lock said chamber, for subsequently operating said second means for firing any propellant disposed within said chamber, and for yet subsequently operating said first means to unlock and open said chamber;
• fourth means coupled to said gun barrel and to said third means for detecting the generation of gas pressure in said chamber and in the absence of such detection, for positively halting the operation of said third means after the time for firing by said second means and before the time for unlocking by said first means;
• said third means including a first cam rotating in synchronism with the operating cycle of said gun and controlling said operating cycle;
• and
• said fourth means including detent means having a first position whereat it clears said first cam, and a second position whereat it positively halts said first cam at a first predetermined angular orientation of said first cam;
• and
• said first cam means including additional means to cyclically set said detent means to said second position at a second predetermined orientation of said first cam.