CATALOG OF THE MECHANICAL COIXECTIONS HX 



The boiler represented by the model consists of a series of vertical 

 tubes suspended into the furnace from a horizontal header across the 

 top of the boiler setting. The tubes are closed at their lower ends, 

 and within each tube is one of smaller diameter. The smaller tubes 

 are suspended from a plate within the header. The headers connect- 

 ing each row of tubes across the boiler are, in turn, connected by a 

 longitudinal drum above them. 



RHODES STEAM GENERATOR, 1869 



U.S.N.M. no. 309210; original patent model; transferred from the United States 

 Patent Office ; not illustrated. 



This model was submitted with the application for the patent issued 

 to William K. Rhodes, of Portland, Maine, June 29, 1869, no, 91869. 



The model represents a horizontal inclined water-tube boiler with 

 solid headers and horizontal baffling. Each header is constructed 

 with its outside face vertical and the tube sheet perpendicular to 

 the tubes so that the front header has a larger volume at the top 

 to be used as a steam reservoir, while the back header has a larger 

 volume at the bottom for water. 



LtJDERS STEAM BOILER, 1869 



U.S.N.M. no. 309211; original patent model; transferred from the United Statea 

 Patent Office; not illustrated. 



This model was submitted with the application for the patent 

 issued to Herman W. Liiders, of Philadelphia, Pa., August 31, 1869. 

 no. 94226. 



Tlie model represents a boiler having inclined water tubes pro- 

 jecting through forward and back brick walls, which form the 

 furnace and boiler setting. The ends of the tubes projecting from 

 the setting front and back are joined in sets of three by short hori- 

 zontal cross tubes to large, vertical, upright pillar tubes on either 

 side of the setting, which, in turn, connect to a horizontal drum on 

 each side of the top of the setting. A third longitudinal drum is 

 placed between the other two drums, and all three are joined by one 

 cross drum above them. The short horizontal tubes at the back 

 are cast in longitudinal sections and connected by ball-and-socket 

 joints designed to permit the free expansion and contraction of the 

 tubes. 



HOWARD AND BOUSFIELD BOILER, 1871 



U.S.N.M. no. 309212 ; original patent model ; transferred from the United States 

 Patent Office ; not illustrated. 



This model was submitted with the application for the patent is- 

 sued to James Howard and EdAvard Bousfield, of Bedford, England, 

 April 4, 1871, no. 113298. 



