https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85648&pn=34 Steam Boiler Water Tube Patentees: Joseph W. Strange - Taunton, Bristol County MA , Elias Strange - Taunton, Bristol County MA Granted:1836-09-29

Abstract: In this boiler the furnace and ashpit are situated in the manner common to vertical cylindrical boilers, and as we generally construct it we employ three concentric cylinders, the middle one of which constitutes the main flue immediately above the furnace, and between which and the second cylinder the main body of the water to be heated is contained. The space between the second and outer cylinder forms an exterior fine surrounding the boiler, and within it also are contained tubes leading from the upper to the lower part of the boiler for the circulation of water. Claim: The manner in which we have arranged and combined these cylinders and tubes, as herein set forth, constructing, as we believe, a boiler which is essentially new in its general character.
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