412 



AND FRUIT-WINES. 



terior arrangement of the pipes.) These pipes or radiators ex- 

 tending up the tower from bottom to top produce a uniform heat 

 the entire length of the tower, and increase the draught by increas- 

 ing the heat at the top, which produces a more rapid circulation 

 than when the heat is all at the bottom, as with the hot-air fur- 

 nace ; and the capacity of the apparatus is also increased in pro- 

 portion to the increase of the heat and the draught through the 

 tower. The trays of fruit in passing up the tower are exposed 

 from one side to the pipes, and on descending are exposed 

 from the other, which causes the fruit to dry uniformly. The 

 tower being vertical the heat is utilized until it reaches the 

 top. In this apparatus a very strong heat can be had through- 

 out the entire length of the tower, without incurring any risk of 



Fig. 79. 



fire from sittings from the trays, when drying cores and skins, 

 falling on the hot-air furnace, which is always placed directly 

 under the tower. Several sizes of this evaporator are manufac- 

 tured. 



Fig. 79 shows the American fruit evaporator, several sizes of 



