304 ILLINOIS STATE DAIRYMEN'S ASSOCIATION 



awarded to Woods Brothers Silo & Manufacturing Co., of Lin- 

 coln, Neb. Prof. A. L. Haecker is vice-president of this com- 

 pany. 



It was found, on investigation, that a round tank could be 

 constructed cheaper than a square tank, and that the efficiency 

 of the round tank would be as good as that of the square tank. 



The tank adopted by the association will be put out under a 

 registered brand as the ''Official Refrigerator Cream Tank." 

 This tank is constructed of No. i fir material. 



Cypress and fir both have very high insulating qualities. Tn 

 experiments by the association it was found that two inches of 

 fir or two inches of cypress have as much insulating capacity as 

 an inch of cork. The strata or layers of this wood differ in 

 hardness. The stratum that grows in the winter is very hard, 

 while that which grows in summer is much thinner and porous, 

 somewhat resembling cork, hence it has great insulating capacity. 



The sides and bottom of this tank are constructed of two- 

 inch fir. The top has two layers of one-inch material, with rub- 

 beroid between. The outside of this tank is painted with two 

 coats of gray paint, as will be seen in the cuts. I am here show- 

 ing the exterior view of the tank and another view showing the 

 tank with the cover removed and the cans in place. This gives 

 a good view of the can fasteners, which prevent the cans from 

 floating. There are heavy strips of iron fastened to the bottom 

 on the inside to keep the cans from cutting into the wood, and 

 at the same time permit the water to flow under the can. There 

 are also rods on the sides of the tank for keeping the cans in po- 

 sition. The top of the tank is so arranged that it can be quickly 

 removed for cleaning purposes. This tank holds two lo-gallon 

 cans and two shot-gun cans, or , if desired, it w^ill hold three lo- 

 gallon cans. In one of the small cans is a filler or set of shelves 

 for holding butter or milk for the home table. The other small 

 can is intended for the freshly separated cream, where it cools 

 and stays until the next separation, when it is emptied into the 

 large can, and the can is then washed so as to be ready for the 

 next separation. 



This little can is a very important factor in producing good 



