CATALOG OF THE MECHANICAL COLLECTIONS 141 



AMOSKEAG STEAM FIRE ENGINE, c. 1885 



U.S.N.M. no. 310467 ; model ; gift of Frank A. Wartllaw, Jr. ; not illustrated. 



This is a fully operating model of the fire engine no. 444 built by 

 the Amoskeag Manufacturing Co., of Manchester, N. H . and used 

 by the New Brighton, Staten Island, N. Y., fire department. The 

 model was made by Frank A. WardlaAv, father of the donor, in 1912- 

 13. It was awarded a silver medal at the Exhibition of the Society 

 of Model and Experimental Engineers at London, October 1913. 



The fire engine depicted by the model consists of a vertical steam 

 cylinder connected to a vertical pump cylinder placed directly below 

 it. The connecting rods of both cylinders connect to a single crank 

 on a shaft, located midway between them, which swings a light-weight 

 flywheel. The boiler is a vertical water-tube boiler enclosed in the 

 typical brightly plated and polished shell. The engine was horse- 

 drawn. 



The model burns coal, operates on a pressure of 55 pounds per 

 square inch, and throws a stream of water a distance of 46 feet. 



AMOSKEAG FIRE-ENGINE PUMP 



U.S.N.M. no. 309821 ; model ; gift of the Franklin Machine Co. ; not illustrated. 



The model, which is cut away, represents one vertical pump cylinder 

 of a fire engine. The cylinder itself is enclosed at the center of a 

 cylindrical casing of much larger diameter, one side of which is the 

 intake or suction passage, the other side being the delivery or pressure 

 passage of the pump. The cylinder heads enclose the ends of the 

 outer casing and form a chamber over each end of the piston cylinder. 

 The annular space between the piston cylinder and the casing is closed 

 at top and bottom with an annular valve seat each containing four 

 circular intake and four circular delivery valves. 



"METROPOLITAN" STEAM FIRE ENGINE, 1906 



U.S.N.ISL no. 309884; original; gift of the American-La France and Foamite 

 Corporation ; not illustrated. 



Built by the American Fire Engine Co., of Seneca Falls. N. Y., in 

 1906, this engine was purchased by the city of Alexandria, Va., where 

 it was used until about 1930. It is typical of the final development 

 in horse-drawn, steam, fire engines before they were replaced by self- 

 propelled and motor-driven fire apparatus. 



This is a vertical 2-cylinder steam engine direct-connected to a 

 2-cylinder double-acting pump. The valves of the engine are operated 

 from a crankshaft driven by connecting rods running from wrist pins 

 on the engine and pump rods. The boiler is of the vertical, water- 

 tube type in which the tubes are lengths of pipe joined by pipe fittings 

 in loops that are laid together in a nearly solid cube of horizontal 



