Add to ORKGPatent for a new and improved boiler and evaporator for sorghum. This design consists in "[an] evaporating pan having the partition walls, the elbow-tubes pivoted in the lower edge of said partitions, and capable of being turned parallel to the bottom of said pan at any angle or perpendicular thereto, [a] copper coil laid in a serpentine groove, made in the bottom of said pan, one end passing through one end of said pan and connecting with a steam generator, and having a valve to regulate the flow of steam, the other end of said coil passing through the other end of said pan" (lines 83-94)