Patent ID: 6311421
Filing Date: 2001-11-06
Classification: F41C

Abstract:
A breech plug for a muzzle-loading rifle, the rifle with an elongated bore, the barrel having a rearward end connected to a receiver, a breech opening in the receiver rearwardly of the barrel, a trigger mechanism in the receiver including a striker pin adjacent the breech opening and in line with the barrel, and a breech plug in the rearward end of the barrel, the breech plug comprising:an elongated body with external threads threadably mounted adjacent the rearward end of the bore of the barrel, the body having rearward and forward ends,a circular depression in the forward end of the body surrounded by an annular rim,the annular rim having an inner diameter slightly less than the diameter of the bore of the barrel,the depression having a tapered bottom surface that slopes inwardly and rearwardly and terminating in a center portion in communication with a center bore extending longitudinally along a center axis of the body,a pair of intersecting grooves extending across the depression and having outer ends extending from an outer edge of the rim, and thence inwardly and rearwardly across the tapered bottom surface to the center portion in communication with the center bore of the body to permit an ignition flame emerging from the center bore to move forwardly and outwardly through the grooves to the inner diameter of the bore of the barrel to envelope in flame an elongated cylinderical propellant charge having a rearward end positioned within the rim of the body.