. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 8 BULLETIN 240, U. S. DEPARTMENT OF AGRICULTURE. machines is shown in figure 3. The machine consists of a large tank divided into two compartments and two smaller tanks. These con- tain water at different temperatures. Bottle-holding frames are car- ried through these compartments on an endless chain in the manner- shown in the drawing. The raw milk is bottled and capped with water-tight caps, then placed on the bottle-holding frames of the machine on the loading end. The bottles of milk are then carried through the pr
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 8 BULLETIN 240, U. S. DEPARTMENT OF AGRICULTURE. machines is shown in figure 3. The machine consists of a large tank divided into two compartments and two smaller tanks. These con- tain water at different temperatures. Bottle-holding frames are car- ried through these compartments on an endless chain in the manner- shown in the drawing. The raw milk is bottled and capped with water-tight caps, then placed on the bottle-holding frames of the machine on the loading end. The bottles of milk are then carried through the preheating compartment into the pasteurizing compart- ment where they remain for about 30 minutes. From the pasteuriz- ing tank the bottles are carried to the cooling tank, then to the refrigerating tank, after which they are removed from the machine. The process is continuous, the bottles of milk being loaded at one f MOTOR. Fig. 3.— Machine for continuous pasteurization of milk in bottles. The bottles have water-tight caps and are conveyed on an endless chain .through water compartments of various temperatures. end, heated, held, and cooled, then unloaded at the other end of the machine. The temperature of the water in this machine is auto- matically controlled. There are other machines on the market which differ in the man- ner in which the bottles are carried through the tanks of water, but the principle is about the same. In other types of pasteurizers the bottles are not submerged in water and consequently water-tight caps are not necessary. The bottles of milk arc heated and cooled by sprays of water and ordinary caps are used and protected from water by a metal covering. One of this type of in-the-bottle pasteurizers is shown in figure 4. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Unit
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