. Bulletin of the Department of Agriculture. Agriculture; Agriculture. MILK-PLAXT OrEKATTON. 17 this course is followed, the empty bottles should be inverted in the cases so as to avoid the drip from the next case above. At medium-sized or largo plants automatic pressure washers are commonly used. (See Fig. 13.) These machines also give the cases a washing and steaming which keeps them in good condition. Wlicre these automatic washers are used care must be taken to see that all the jet openings are working at all times and that the solu- tions in the various tanks are kept at the proper s
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. MILK-PLAXT OrEKATTON. 17 this course is followed, the empty bottles should be inverted in the cases so as to avoid the drip from the next case above. At medium-sized or largo plants automatic pressure washers are commonly used. (See Fig. 13.) These machines also give the cases a washing and steaming which keeps them in good condition. Wlicre these automatic washers are used care must be taken to see that all the jet openings are working at all times and that the solu- tions in the various tanks are kept at the proper strengths and temperatures. The temperature in the first tank should not be above 100° or 120° F. at the highest, so that the bottles will not be broken. Each succeeding tank should be a little hotter until the final tank, which should be near the boiling I'lG. 14.—Automatic bottle washer showing pnmps; thermometers indicate the temperatures in the various tanks. In small machines of this type with only two or tliree tanks, the increase in temperature of the water in the various tanks is more sudden. Table 5 gives temperatures observed in the various tanks at several plants. (See Fig. 14.) Table 5.—Tcmperalurcs observed in the various tanks of automatic-pressure washers at several plants. riant No. Num- ber of tanks. Temperatures of the various solutions in tanks. Tankl. Tank 2. Tank 3. Tank 4. Tank o. 1 5 4 4 3 3 120 90 UX) no 90 'F. 140 120 120 150 140 °F. 160 160 140 ISO 180 'F. ISO 200 170 "F. 200 2 3 4 5 28554°—23—Bull. 973-. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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