METAL BOTTLE FOR RECEIVING, CONTAINING AND DISPENSING EXOTIC GASES UNDER PRESSURE

摘要

Astract of the DisclosureA strong, seamless one-piece metal bottle of substan-tially uniform wall thickness for containing and dispensing gasunder pressure is produced from a flat metal piece by a series ofdeep-drawing operations to provide an elongated cylindrical shellhaving an open end mouth and a slight flange thereabout. A dim-ple is formed in its bottom end wall. The flange and an adjacentcylindrical open end mouth portion of the shell is then severedfrom the main body, and the wall thickness of the new open endmouth portion is tapered from the cylindrical side wall of theshell towards its mouth edge. Thereafter, the tapered open mouthend portion is turned or swaged inwardly into a somewhat blunt,rounded-in nose portion of a substantially uniform thickness thatsubstantially corresponds in the thickness to the side and bottomwalls of the formed metal bottle and that has an open end of re-duced size suitable for mounting a nipple, ferrule or valve fit-ting therein.