246 



DAIRYIKG. 



PER CENT FAT IN CENTKIl XGAL SKIM-MILK. 



Style of Separator, 



Butter Accumulator 



Columbia Cream Separator 



Raid's Impr. Danish Separator 



Danish- Weston " 



De Laval Alpha No. I " 



•' Alpha Acme " 



" Alpha Turbine " 



" Alpha Baby No. 2 Separator. . 

 " Alpha Baby No. 3 " . . 



" Horizontal Separator 



Jumbo Separator. 



Sharpies Russian Separator 



'• Imperial " 



U. S. Butter Extractor Sep. No. i 



Do. (as separator) 



U.S. Butter Extr. Sep. No. 2 ■. 



Do. No. 3 



U. S. Separator No. i 



Do. No. 3 



Do. No. 5 



Victoria, 30 gal. Separator 



Do. 70 gal. " 



Aver;iges of Trials at 



American Experiment 



Stations. 



Number 

 of Trials. 



Per cent 



Fat in 



Skim-milk. 



With the constant improvement in machines it is not 

 difficult to find separators which will do perfect work. 



Simplicity, dii7-ability and safety of construction are con- 

 siderations of vital importance. The separator must be 

 simple in construction so as to be easy to handle, to clean, 

 and to oil. It must be durable, so that it will need but few 

 repairs, and, first of all, it must be absolutely safe. Too 

 many deplorable fatal accidents are already due to burst- 

 ing separator bowls, and too much stress cannot be laid on 

 the demand that the machine must by strongly built, of first- 

 class material and workmanship, so that accidents are 

 made impossible with reasonably careful handling. 



As the pressure on the circumference of the bowl increases 

 with the square of the speed, it is evident that the modern 

 high-speed separators are exposed to a tremendous strain 

 — in fact the tensile strain in some of them is as high as 

 20,000 to 30,000 lbs. to the square inch. Fortunately, the im- 

 provements in bearings and other features of construction 



