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of this invention and I therefore do not, pur- pose .limiting the patent granted further than necessitated by the prior art. I claim as my invention:- 5 1. A packing gasket comprising a soft metal sleeve swaged to afford an integral internally : grooved circumferential ring thereon' intermediate, the ends thereof, the outside diameter of the base of said ring 10 being slightly larger. than the inside diam- eter of the pipe for which it is designed and the 'outside diameter of the edges of the gasket being exactly equal to the inside di- ameter of thebpipe. 15 2. The combination with a pair of pipes, of means for connecting the same, a tapered one piece metal sleeve projecting into the adjacent ends of said pipes and a grooved
ring on said sleeve adapted to have the sides thereof pinched together between said 20 pipe ends to reduce the groove and compress the sleeve to form a tight joint when said means are tightened, the outside diameter of the base of said grooved ring being slightly larger than the inside diameter of 25 the pipes, and the outside diameter of the ends of the ring being equal to the inside diameter of the pipes. In testimony whereof I have hereunto subscribed my name in the presence of two so subscribing witnesses. JESSE H. ALLISON. Witnesses: GEO. GrEEnBnG, I. ALARCON.