Abstract: A headpiece assembly for forming a rolled flange on the border of a collar associated with an annular lid. A sleevelike headpiece is axially slidably supported on a shaft and projects downwardly so as to surround and cooperate with a plurality of clamping levers. The clamping levers at the lower free ends have a clamping part which moves into a radially inward position wherein the clamping part is axially aligned below an annular flange-forming recess, the latter being formed on a pressure plate which is mounted on the lower end of the shaft for limited axial movement therebetween. The pressure plate and the lower free ends of the levers are disposed axially downwardly from the sleevelike headpiece. Downward movement of the headpiece cams the clamping levers radially inwardly to a position below the pressure plate, and causes the headpiece to engage the pressure plate and move it downwardly so as to effect formation of a rounded flange on the metal collar.

Abstract: A pourer plug assembly for a container, wherein a metal cover is fixed to the upper end of the container and defines a central opening therethrough. A flexible pourer plug is secured to the cover for closing the opening. The flexible pourer plug has a base ring which is positioned within the opening and is provided with an annular rim disposed therearound and projecting radially outwardly thereof. The cover, in surrounding relationship to the central opening, has a fastening flange which defines an inwardly opening groove in which is accommodated the fastening rim. The fastening flange has an upper inner edge which projects downwardly into a narrow ring-shaped slot which opens downwardly of the plug between the base ring and the rim.