Appeal No. 1998-2035
Application 08/458,783
APPENDED CLAIM
1. Apparatus for lubricating and curling a rim of a
paperboard container comprising:
a housing block defining a central recess sized and
configured to accept therein a rim of a paperboard container
to be curled;
an annular curling channel disposed in said recess
for curling the rim of the paperboard container in response to
relative advancing movement between the paperboard container
and the housing block;
said housing block also defining an annular liquid
channel concentrically disposed in surrounding relationship to
said annular curling channel for distributing lubricating
liquid; and
a porous liquid transfer ring formed of a felt or
open-celled foam material, said liquid transfer ring being
attached to said housing block in covering relationship to
said annular liquid channel so that lubricating liquid
supplied to said liquid channel comes into contact with and
saturates said liquid trans- fer ring;
said liquid transfer ring includes a circular edge
surface which defines a central opening such that said liquid
transfer ring extends partially over said curling channel,
wherein
the rim of the paperboard container comes into
wiping contact with said central opening of said liquid
transfer ring so that lubricating liquid is transferred
thereto prior to the rim being curled in said curling channel.
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