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tion of these machines, which I have given, may be of service in facili- 

 tating the manufacture of those important articles, draining pipes and 

 tiles. 



The proper construction of kilns for burning the tile, is a matter of 

 very great importance, and any information on the subject must be use- 

 ful. 



The following is a specification of the buildings for a tilery, capable 

 ■of making in a good season, 1,300,000 one inch pipes, or 950,000 If 

 inch pipes. 



Sheds 170 feet in length, with four double and three single rows of 

 shelves. 



Two kilns, each 10 feet by 10, the walls made of clay, and the flooi's 

 ^nd flues of brick. 



Wrought iron furnace bars. 



Breast wall in front of kiln, (brick.) 



Two moveable wooden roofs for kilns. 



A tile machine ; two tables for rolling tiles and rollers. 



Dies and screens, and felting for screens, barrows and trays. 



This is a specification for the works of a first rate tilery. Cheaper 

 buildings may answer the same purpose nearly as well. Proprietors 

 of brick yards can construct tileries without much additional expense. 



Two kilns, each 10 feet by 10, will hold: 

 64,000 1 inch pipes. 

 40,000 If inch pipes. 

 23,800 2 inch pipes. 



With the 2 inch pipes an equal number of one inch may be burned, 

 as they fit within them, making 47,600 of both sizes. 



The tiles are placed in the kilns in an upright position. During the 

 first eighteen hours of burning, a slow fire is kept up, for the purpose 

 of expelling any moisture that may remain in the tiles; during this pe- 

 riod the smoke that issues is of a light color, indicating the presence of 

 vapor, which ceases when the tiles are thoroughly dry — and this points 

 out to the burner the precise time for increasing his fire, which may 

 now be kept strong until the tiles are perfectly burned — this will take 

 about 36 hours more. 



As soon as the tiles are baked, the ash pits and fire doors are built 

 up with loose bricks, which are then plastered over with clay, and the 



