UNITED STATES DEPARTMENT OF AGRICULTURE 



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BULLETIN No. 663 



Contribution from the Bureau of Chemistry 

 CARL L. ALSBKRC, Chief 



Washington, D. C. 



PROFESSIONAL PAPER 



May 27, 1918 



THE INSTALLATION AND EQUIPMENT OF AN 

 EGG-BREAKING PLANT. 



By M. K.Jenkins, Assistant Bacteriologist, prepared under the direction of M. E. 

 Pennington, Chief, Food Research Laboratory. 



CONTENTS. 



Page. 



Purpose of the investigation 1 



Construction and arrangement of rooms 2 



Transfer openings and conveyors 4 



Ventilation 6 



Page 



Equipment of breaking and sterilizing rooms. 7 



Outfit list 7 



Breaking room equipment '. 8 



Sterilizing room equipment 20 



Conclusions 21 



PURPOSE OF THE INVESTIGATION. 



To assist egg breakers to select effective apparatus and to arrange 

 their plants to handle liquid egg in a sanitary manner and with 

 maximum economy of space and labor is the purpose of this bulletin. 

 The essentials for successful egg breaking are sanitary quarters, 

 excellent lighting, proper ventilation, well-designed apparatus, 

 facilities for quick freezing of liquid egg, and, of course, trained 

 operatives. 



The thoroughly modern plant must provide a chill room for the 

 eggs in the shell, a chilled candling room, a refrigerated breaking 

 room in which the egg contents are removed from the shell, a room 

 in which to wash and sterilize apparatus used in breaking, and a sharp 

 freezer for the quick freezing of the liquid egg and its storage. Econ- 

 omy in handling eggs demands that proper space be allotted to the 

 several departments, and that each be so located with reference to 

 the others that unnecessary walking and trucking are avoided. The 

 egg-breaking room and that for cleansing the apparatus are of pe- 

 culiar importance. On these subjects this bulletin gives conclu- 

 sions based upon a special study of frozen and dried eggs. It rec- 

 ommends certain improvements in the distribution of space, and 

 discusses new equipment devised to meet special 'requirements of 

 the industry. To assist the egg breaker who wishes to improve his 



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