less than 1,000 pounds per 

 hour is treated. Fig. 35 is 

 a cross section of the heater 

 where G is a galvanized 

 cylinder riveted to the base 

 and provided with an an- 

 nular tin gutter H. D is a 

 slightly conical tin drum 

 soldered to a tinned brass 

 or malleable iron bottom 

 with a spindle which fits 

 in the cup c revolved by 

 the turbine flyer f. The 

 drum D is strengthened by 

 a hoop at the top, into 

 which is riveted a cross (r) 

 of four rods which again 

 brace the 1-iiich pipe p 

 that acts as spindle for the 

 drum. The cylinder G has 

 a flat cover with a cross= 

 In the cen- 



Fig. 35. 



bar B, which is held in position by two thumb screws m. 

 ter of this bar is the upper bearing. 



The milk enters at P through a regulating cup such as used for 

 separators, and is thrown out of four small holes at the bottom of the 

 pipe PP, and fills the space M where any possible dirt collects. It. 

 then overflows the ring d and flows in a thin film (shown by. the ar- 

 rows) and is thrown in the gutter H, leaving through the spout with 

 the thermometer L. 



The exhaust steam from the flyer f goes up through eight holes 

 x x into the cylinder and heats the drum D. In running about 1,000 

 Ibs. of milk per hour I raised the milk from about 54 to 155 with 

 the exhaust steam alone, but when I run 1,500 Ibs. an hour I had to 

 use some live steam, which is led through the pipe s under the bot- 

 tom of the drum. If the steam pressure and milk supply is uniform 

 this apparatus heats it steadily within a variation not to exceed four 

 or five degs. Fah. A wooden jacket would be advisable to economise 

 steam especially in winter. The condensed steam escapes by K and 

 by two small holes I I in the bottom. 



