vxnsL, 



377 



(Fig. 128) is that patented by James B. Moore, of Read- 

 ing, Pa., which consists of an oil tube with a tapered 

 nozzle, surrounded by a steam pipe also with a tapered 

 nozzle. The combustion chamber is of solid metal and 

 is placed in the ash pit, the grate having been taken 

 out. The air for combustion is admitted through open- 

 ings on three sides of the base of the boiler. The 

 burner is inserted through a hole on the fourth side, and 

 is surrounded by a conical tube through which the air 

 for combustion enters. 



The oil tube is connected with the oil tank, and the 

 steam pipe with the steam dome, and also with an air 



FIG. 123. CBUDE OIL BUBNEB. 



pump, by which a blast is supplied while getting up 

 steam. The steam pipe does not go directly from the 

 dome to the burner, but first makes a circuit of the com- 

 bustion chamber, and the steam is there superheated. 

 In passing through the tube to the nozzle, the oil, being 

 surrounded by the superheated steam, is considerably 

 heated, and flowing through the spiral grooves in the 



