EVAPORATED MILK STERILIZING 



137 



Pig-. 58. 

 Sterilizer for evaporated milk 



Courtesy of Arthur Harris & Co. 



Sterilizers. The predomi- 

 nating apparatus used for ster- 

 ilizing is a huge, boiler-like, 

 hollow, iron cylinder or box. 

 It opens either at one end 

 or on the side. Its interior 

 is equipped with a revolving 

 framework, steam inlet with a 

 perforated steam distributing 

 pipe in the bottom of the steril- 

 izer and extending over the entire length of the sterilizer, a water 

 exhaust, a water inlet with a water distributing pipe in the 

 top of the sterilizer and running the entire length of 

 the sterilizer and a water exhaust. The sterilizer carries on its 

 exterior a steam gauge, a vacuum gauge, a water gauge, a blow- 

 off valve and a high-temperature thermometer (registering to 

 about 280 degrees F.). In some makes of sterilizers the interior 

 frame-work does not revolve on its axis, but moves back and 

 forth by means 

 of a direct-act- 

 ing, steam- 

 driven piston, 

 attached to the 

 back end of the 

 sterilizer. The 

 purpose of 

 keeping the 

 cans in motion 

 while heat is 

 applied, is to 

 heat the con- 

 tents rapidly 

 and uniformly, 

 and to prevent 

 the evaporated 

 milk from bak- 

 ing onto the 



sides of the Fig". 53. Sterilizer for evaporated milk 



cans A Still Courtesy of The Engineering Company 



