INDUSTRIES DEPEXDIXG OX AMMAL PRODUCTS I5J5 



The milk kept in tanks is in contact with a much smaller siii face than if 

 kept in cans. The surface which 2,000 gallons of milk come in contact with 

 if kept in 200 cans of ten gallons each represents i.ioo square feet whereas 

 if milk is stored in a Pfaudler tank holding 2.000 gallons, it is in contact with 

 but no square feet, or just one-tenth of the surface. In other words, 

 by eliminating can storage the surface is reduced 90 per cent. The more 

 surface the milk comes in contact with, and the longer the milk is kept, the 

 higher the chances of an accumulation of bacteria. 



When ready for filling, the milk flows from these tanks into a milk 

 pump which forces it to the floor above through a clarifier, thence direct to 

 the bottle filler. 



The empty bottle cases are unloaded from the wagons and delivered 

 by a gravity conveyor dire,ctly in front of the soakine machine. The 

 bottles are taken out of the cases and put into the pockets of the soaker. The 

 empty cases, after being cleaned, are deposited on a gravity conveyor which 

 carries them to the discharge end of the pasteurizing machine ready to be 

 refilled with pasteurized n.ilk. 



Now the bottles pass mechanically through the soaker which consists 

 of a large tank divided into from 3 to 6 compartments, all of which, except 

 the last, are filled with hot water anjd caustic soda solution. The first com- 

 partment of the scaker contains the strongest solution of caustic soda at 

 a temperature of iio^. The following compaitments contain solutions of 

 less strength at temperatures as high as 1800. The last compartment is 

 kept filled with fresh water at a temperature of 800. 



The bottles are passed successively through these various compart- 

 ments, occupying a total time of 20 minutes for the entire process. 



After passing through this soaking system, the bottles are delivered 

 mechanically to the outside pressure washing machine, where the outside 

 of the bottles are washed by jets of water under pressure, and the inside is 

 filled with water at the same time, which frees them from the caustic soda 

 solution to which they have previously been subjected. The bottles are 

 then passed mechanically to the large inside pressure washing machine in 

 which they arethoroughh" cleaned, each bottle being subjected to five succes- 

 sive washings in the inside. Three of these five washings are by means of 

 water circulated under pressure by a centrifugal pump at 65 pounds per 

 square pressure by a centrifugal pump at 65 pounds per square inch. The 

 final two washings are performed by water directly from the fresh water 

 supply. The water used in these final washings is the only water actually 

 consumed as all the other water is reused. 



During this process of interior washing, the bottles are once more 

 washed externally by jets directly from above, which jets are also connected 

 with a pump and supplied by reused water. The greatest efficiency is 

 therefore, obtained with a minimum amoimt of fresh water expense. 



After the final washing, the bottles are delivered mechanically on a 

 brass platform from which they go to the filler. 



The filler passes them in a circular direction and fills the bottles at the 



