INSTANTANEOUS BUTTER MAKER. 



269 



globule shall receive the same amount of concussion, and hence the 

 butter-milk often contains a large percentage of butter ; this is now 

 avoided, as the cream must pass equally through the cylinder, at the 

 same time receiving a regular and rapid concussion from the revolving 

 dasher. The cylinder is enclosed in a water casing, so that the 

 temperature is kept very lov , and the butter is consequently firm, 

 whilst there is no possibility of its being overchurned. It is very free 

 from butter-milk, and therefore keeps well. 



Fig. 64. "Arch-Albany" Butter Worker, with 

 Helical Roller. 



It might be expected that this practice ot churning fresh cream 

 would entail a loss in the quantity of butter, but as a matter of fact it 

 has been ascertained from experiments that this is compensated for 

 by the perfect separation of the butter from the butter-milk. The 

 churn is fixed to the separator frame, and can be attached to any of 

 the Lavai machines. As shown on the turbine, the whole process of 

 separating the milk and churning the butter is performed by a jet of 

 steam direct from the boiler, without the intervention of shafting, 

 belting, or an engine of any kind. The churn has no complex arrange- 

 ments about it, it can be taken to pieces and cleaned with the greatest 



