63 



CHAPTER III. 



THE PASTEURIZING COOLER. 



I have shown how in some pasteurizing apparatus the 

 heating and cooling may be done in one vessel. I have also 

 shown some of those where the same construction is used 

 for both purposes separately. It remains now to mention a 

 few of the coolers which have been used. 



COOLERS WITH EXPOSED SURFACE. 

 Among those made on this plan the most effective are un- 

 doubhtedly those made on the Lawrence and Laval plan. The 

 former has indeed been so thoroughly copied both in Europe 



WARM MILK 



A B. G 



and America by most of the manufacturers, who thus have 

 paid the inventor a high compliment. The latter is illustrated 

 in the lower part of Fig. 40, and the former is represented in 

 Fig. 65, which shows cross sections of the three different 



styles of constructing this cooler, 

 A, B, C. To these should be add- 

 ed the cheap tin cooler made in 

 America under the name of Dan- 

 ish Weston cooler, and the cooler 

 made by A. H. Barber, of gal- 

 vanized iron pipes, with close el- 

 bows and a partition of tin sol- 

 dered between them. 



'The Lawrence style of coolers 

 are made in America by the 

 Star Cooler Manufacturing Co., 

 Vermont Farm Machine Co., and 

 A. H. Reid, of Philadelphia, the 

 last of which I illustrate in Fig. 

 66, and are, when well made, 



R SPACE 



DMILK 



Fig:. 66. 



