80 Condensed Milk and Milk Powder 



able, the factory must rely on its own generator. For the needs 

 of the condensery a gasoline gas plant seems suitable. Gaso- 

 line gas is produced by forcing atmospheric air over or through a 

 body of gasoline. The mixture of air and gasoline vapors forms the 

 gasoline gas. The gas generators in use consist chiefly of carbu- 

 retor, air pump or blower, and regulator. The carburetor usually has 

 a series of cells, connected with one another by means of a system of 

 syphon tubes. The interior of each cell is partitioned off with heavy 

 cotton wicking. This wicking absorbs the gasoline by capillary at- 

 traction. The air, passing through the fine meshes of wicking, comes 

 in contact with a large surface of gasoline. 



The following are some of the essential points to be observed 

 in the installation and' operation of gas generators of this type : Sink 

 the carburetor low, enough (three to five feet below the surface of the 

 ground, if necessary) to permit the gas pipe to slant from the factory 

 to the carburetor. If the gas pipe is horizontal, or inclined toward 

 the factory, condensation water may collect in the pipe, obstructing 

 the free passage of gas. This causes the gas either not to be avail- 

 able at all, or to reach the stoves in irregular gusts, which is equally 

 unsatisfactory. Where the gas pipe slants toward the carburetor, 

 the condensation water flows back into the carburetor, causing no ob- 

 struction. Use gasolineof the best quality only. Cheap grades form a 

 residue and clog the generator. The gasoline is best bought in iron 

 barrels ; this prevents unnecessary loss by evaporation, which occurs 

 in wooden barrels, especially in summer. The cells should not be 

 filled more than two-thirds full ; too much gasoline reduces the gas- 

 generating capacity of the carburetor. If, during extremely cold 

 w.eather, the carburetor refuses to generate gas, the injection of a 

 pint of wood alcohol through the blow pipe into the cells, usually 

 remedies the trouble. The gas plant and gasoline storage should be- 

 located in a separate building and at a reasonable distance from the 

 main building, in order to minimize danger from fire. 



