Mantón was soon able to put his lock into production. Again Forsyth sued, but his patent was about to expire, ancl although the court found in his favor. M ton turned to the tube lock and obtained a patent on it in 1818. In 1816 he patented a percussion pellet lock which Forsyth claimed was an infringement on his patent, and in the suit which followed Forsvth won. ![]() Most controversial of all were Manton's contributions to the development of the percussion ignition system. Less popular were his V-shapcd priming pan and his gravitational safety stop designed to prevent the accidental discharge of a gun while a chargc was being rammed home. Perhaps the most widely acccptcd of Manton's designs was the elevated rib for sighting double-barrel arms, and second was his patent brccch complete with drain hole, which made it possible for double-barrel guns to be constructed in a more streamlined form. ![]() A number of these improvements met with little favor despite their virtues, and a few led to litigation ancl considerable controversy.
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