168 Continuous Proctss EvAPORATORS 
must be completed before any of the finished product leaves the 
evaporating vat or tank. The operation in either case 1s inter- 
mittent and not continucus. 
Of more recent vears, equipment and processes have been 
developed that make possible continuous operation. That is, the 
fresh mill enters the machine and the condensed milk leaves it 
simultaneously and continuously. So far three types of continu- 
ous machines have been perfected sufficiently to make them com- 
mercially practical and usable, namely the Buflovak Rapid Cir- 
culation Evaporater, invented and manufactured by the Buffalo 
Foundry and Machine Co., Buffalo, N. Y., the Continuous Con- 
centrator, invented by the By-Products Recovery Co., Toledo, 
Ohio, and manufactured by the Creamery Package Manufactur- 
ing Co., Chicago, and the Ruff Condensing Evaporator, manu- 
factured by The Cream Production Co., Port Huron, Mich. 
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 han- 
dling foamy and del- 
icate liquors. 
Construction.— 
The Buflovak Rapid 
Circulation Fvapora- 
tor consists of a 
horizontal evlindric- 
al vapor body. To 
this is bolted an in- 
clined = cylindrical 
steam-chest. 
The vapor body 
Is equipped with a 
baffle plate which ex- 
tends across its cyvl- 
indrical part and 
Fig. 73. The Buflovak rapid circulation evaporator 
Courtesy of Buffalo Foundry & Machine Co, 
