36 



While the milk does not get any perceptible "boiled taste," there 

 in, after running 3 000 Ibs. through it, quite a layer of coagulated 

 albumen, which takes some labor to clean off. Yet I would far rather 

 clean that one drum instead of five or six cans, even if the albumen 

 deposit is less there. In Fig. 34 the apparatus is shown as connected 

 with three Baer coolers. 



I propose to utilize the same 

 idea by having the bottom of the 

 drum T (see Fig. 36) cast with 

 shovels on, and rotate the drum by 

 a steam jet s. By this application, 

 or by driving it with a gearing at 

 the top it is optional whether the 

 milk shall be taken in from the 

 top or through the bottom bearing 

 at L P. The advantage of the lat- 

 ter plan is obvious as the heater 

 will act as an elevator at the same 

 time, thus killing two birds with 

 one. stone. As the drum is twenty- 

 eight inches deep It 'will be possi- 

 ple to lift the milk at least two 

 feet from M to the outlet N of the 

 gutter G, and with a higher speed 



Fig. 86. 



than that used by me, 450 to 500, 

 it may be arranged to elevate to 

 any height. 



After I had run this heater 

 for a month I was amused to hear 

 that K. HANSEN & SCHRODER 

 had made a heater whereby they 

 obtain the same result by other 

 means, and though not strictly a 

 centrifugal heater I class it under 

 these. Fig. 37 represents this 

 heater, consisting of a wooden cov- 

 ered steam jacket A, which is 

 swung on pivots P. Steam enters Fig. 57. 



