134 CONTINUOUS PROCESS EVAPORATORS 



tion of the entire batch is completed. Then the pan must be 

 emptied before more milk can be drawn in. In a similar man- 

 ner, in the Campbell process, evaporation of the entire batch 

 must be completed before any of the finished product leaves the 

 evaporating vat or tank. The operation in either case is inter- 

 mittent and not continuous. 



Of more recent years, equipment and processes have been 

 developed that make possible continuous operation. That is the 

 fresh milk enters the machine and the condensed milk leaves it 

 simultaneously and continuously. So far two types of continuous 

 machines have been perfected sufficiently to make them com- 

 mercially practical and usable, namely the Buflovak Rapid Cir- 

 culation Evaporator, invented and manufactured by the Buffalo 

 Foundry and Machine Co.. Buffalo, N. Y., and the Continuous 

 Concentrator, invented by the By-Products Recovery Co., To- 

 ledo, Ohio, and manufactured by the Creamery Package Manu- 

 facturing Co., Chicago. 



BUFLOVAK RAPID CIRCULATION EVAPORATOR 



This type of 

 Evaporator has been 

 developed from the 

 standard return-flue 

 tubular boiler and 

 adopted for the spe- 

 cial purpose of hand- 

 ling foamy and del- 

 icate liquors. 



Construction. 

 The Buflovak Rapid 

 Circulation Evapora- 

 tor consists of a 

 horizontal cylindric- 

 al vapor body. To 

 this is bolted an in- 

 c 1 i n e d cylindrical 

 steam-chest. 



The vapor body 



is ennirmed with a F '9- 50 - Tne Buflovak rapid circulation evaporator 

 equipped Wit Courtesy of Buffalo Foundry & Machine Co. 



