Device for forming a shaped cover for a flask

A device for forming a shaped cover, for a flask having a bottom, a side wall and a neck, from a skirt constituted by lengths of strip-like material having free end portions, said device comprising, in combination, a supporting body adapted to receive an inverted flask having a skirt engaged therearound with the lengths of strip-like material extending along the exterior surface of its side wall with their free end portions extending upwardly beyond the flask bottom;

• means operable to center, relative to the flask bottom, an annular core, for forming a base of the cover, with such free end portions of the lengths of strip-like material extending upwardly beyond the annular core;
• an axially movable assembly including an inlet cup portion operative to engage such free end portions of the lengths of strip-like material to displace the same radially inwardly over the annular core to project radially inwardly from the inner periphery thereof;
• said assembly including means defining a cylindrical recess communicating with said inlet cup portion and coaxial with the annular core;
• means operable to feed laterally into said recess plug means engageable in the annular core;
• and piston means in said assembly displaceable axially to engage and displace the plug means axially inwardly from said cylindrical recess into engagement with the radially inwardly extending free end portions of the lengths of strip-like material to displace such free end portions axially inwardly over the inner periphery of the annular core and to force the plug means into the annular core to clamp the free end portions of the lengths of strip-like material between the plug means and the inner periphery of the annular core.