A procedure with your corresponding apparatus for the pneumatic closure of metal drums or big-capacity drums with chemical products in fusion at high temperature (Machine-translation by Google Translate, not legally binding)

摘要

A method for the pneumatic closing of metallic drums or large-capacity drums with high-temperature melting chemicals, in which the drum is to be closed by means of an operculum crimped in its filling opening, characterized in that the metal operculum is retained by magnetic means, because it is given to these magnetic media the possibility of being centered exactly on the opening of the drum because they are provided with freedom of movement in three directions and because the operculum is crimped in the opening of the drum thanks to a radial expansion action of the operculator head. (Machine-translation by Google Translate, not legally binding)