4 Bulletin 171. 



in which it is to be used. At the present time certain parties are 

 going about the state claiming a royalty from any who may be using 

 the dilution process in any form of can but their own. The follow- 

 ing is a type of the inquiries we are receiving concerning the matter. 



K Y., May 26, 1899. 



Cornell University Experiment Station : 



There is in this vicinity an agent for the Wheeler Gravity Sepa- 

 rator^ who is trying to stop us from using every other separator or 

 can of every description except his own, claiming that his manufac- 

 turer lias a patent on the process, and that we have no right to mix 

 water with oar milk for the purpose of raising the cream, except by 

 using his cans or by paying a royalty to his manufacturer. 



Respectfully, 



This and similar inquiries have led us to make a careful examina- 

 tion of the files of the Patent Office Gazette and we find that during 

 the past year numerous patents liave been granted on various forms 

 of gravity separators and creaming cans. Briefly described they are 

 as follows : 



The Aquatic Cream Separator. 



This is manufactured under patent No. 605,252, granted June 7, 

 1898, to C. L. & F. G. Lee. Its character is shown by the follow- 

 ing extract from the specifications and the claim under which the 

 patent was granted. 



" The improved results obtained by our apparatus are as follows : 

 The milk is poured through the strainer D into the aerator C, 

 whereby the sediment is removed therefrom. The milk then passes 

 through the perforated botton I of the aerator and is sprayed upon 

 the conical top of the cover h of the cooler B, whereby it is deprived 

 of its animal heat, and thence passes down the outside of the cooler. 

 It is then allowed to stand until the temperature thereof is reduced 

 sufficiently in order to prevent congealing of the same. The milk 

 is then diluted by the introduction of water and is allowed to remain 

 tranquil a sufficient period of time to allow the cream to rise to the 

 top thereof, w^hich action can be readily ascertained by means of 

 a sight-glass n, secured in the side of the can A." 



" What we claim is — 



