FROM THE PRACTICAL VIEWPOINT 



in tanks or compartments for a definite length of 

 time before being discharged. 



The first holder placed upon the market was of 

 this character, and consisted of an upright cylin- 

 drical tank having partitions radiating from the 

 centre, thus dividing the tank into eight compart- 

 ments. Such a holding apparatus is illustrated in 

 Fig. 20. The drawing, however, shows a later 

 type of the same apparatus, in which there are 

 eight separate tanks which are arranged in a cir- 

 cle. An upright shaft extends through the centre 

 of the tank or the group of tanks, as the case 

 may be, to which is attached, at the upper end, a 

 revolving spout, into which the milk is discharged 

 through the pipe from the heater. This spout as 

 it revolves causes each tank to be filled in turn. 

 To each tank is attached at the bottom an outlet 

 pipe and valve. These valves are kept closed by 

 springs, and are opened by means of a revolving 

 arm, or cam, attached to the lower end of the up- 

 right shaft before referred to. These outlet pipes 

 discharge into a common pipe, through which the 

 milk is conveyed to the cooler. By placing the 

 revolving inlet spout in proper position with rela- 

 tion to the revolving cam at the bottom, it can be 

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