Patent ID: 8667923

Claim:
A moistening device for moistening an envelope flap of an envelope, the moistening device being incorporated into a mail handling machine, the moistening device comprising: moistening means for moistening the envelope flap in a uniform manner, said moistening means including: a reservoir of water having two separate compartments having a moistening material therein, a reserve stock of water from which a quantity of water flows to the reservoir of water, said quantity of water being suitable for imbibing the moistening material, said reserve stock of water having two isolated compartments, two distinct water feed circuits for respectively feeding water separately to the two separate compartments of said reservoir of water from the two isolated compartments of said reserve stock of water in a manner such as to define at least two distinct levels of water in the two isolated compartments of said reserve of water, and thus to define two different heights of water in the at least two corresponding separate compartments of said reservoir of water, wherein the envelope flap is conveyed along the moistening material in the two separate compartments so as to be moistened thereby; and a device for separating the envelope flap from the envelope.