Marbleized soap bar plodder

Claim 1

A plodder for producing extruded soap comprising: a. an elongated cylinder having first and second openings spaced longitudinally along the side thereof and an extrusion head toward one end thereof, b. first and second soap inlet means respectively coupled to said first and second openings for enabling respective first and second soap materials to be fed to the interior of said cylinder, c. a multithread extruding screw rotatably mounted within said cylinder to propel said first and second soap materials from said openings to said extrusion head, said screw having along its length a first section of threads juxtaposed with a second section of threads, d. a closure screw disposed in said first soap inlet means and in said first opening whose ridges engage nonadjacent grooves of said first section of threads, said nonadjacent grooves being of a single thread and being continuations of the grooves of said second section, said engagement thereby preventing substantial entry of said first soap material into said non-adjacent grooves but allowing entry of said first soap material into the intermediate grooves between said non-adjacent grooves, and e. means for driving said closure screw and said extrusion screw in opposite directions.