DRUM CLOSURE AND METHOD OF MAKING

摘要

There is disclosed a method for forming a threaded dispensing opening for a cylindrical drum container having a generally flat circular closed bottom, a generally flat circular closed top (11), and a cylindrical side wall comprising the steps of forming an aperture (36) in the drum top (11) and drawing the drum metal adjacent the aperture (36) upwardly to define an upwardly extending annular shoulder (35). The shoulder (35) is then compressed downwardly to thicken the shoulder and a female threaded portion (37) is formed on the inside of the annular shoulder (35) which is receptive of a threaded closure member (40). There is also disclosed a drum formed with a threaded dispensing opening and an apparatus for forming same.