One Thousand Ways to Make Money by Page Fox

474. ENVELOPE MOISTENER AND SEALER.--Construct a narrow brass or iron

plate, one-fourth of an inch wide and shaped like the flap of an envelope. A shallow vessel of water is placed underneath, into which by the manipulation of a screw, the plate is occasionally dipped. Above the plate is fixed a second plate which acts as a sealer, and which operates with a screw-head.