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BULLETIN 849, U. S. DEPARTMENT OE AGRICULTURE. 



When the trucks were unloaded inside of a building that has no 

 platform, considerably more time and labor were required to handle 

 100 cans of milk. The system of using conveyers to send the milk 

 from the platform to the receiving room required more men and 

 time than when the milk was dumped direct without the use of con- 

 veyers. This is due to the fact that at the plants where no conveyers 

 were used the dumping tank was quite close to the receiving platform 

 and less handling was required. The dump tanks at these plants 

 were also sunk in the floor, so that very little lifting of the cans was 

 required. In the plants where the conveyers were used the receiving 

 room was much better protected from contamination, being further 

 from the receiving platform and better inclosed. If conveyers had not 



Fig. 3. — System of conveying cans and milk from the trucks to the dump tank, located 

 at a considerable distance from the entrance to the receiving room. 



been used at these plants more men would have been required. The 

 necessity for a conveyer depends, of course, on the location of the 

 dump tank with reference to the receiving platform. 



MILK PUMPS COMPARED WITH ELEVATORS. 



Very few plants elevated the milk to the top floor in the cans, the 

 majority using pumps. Studies were made at 28 typical plants to 

 determine the relative economy of the systems of (A) dumping the 

 milk in tanks on the ground floor and then pumping from this tank 

 to the receiving tank above, (B) raising the milk in cans to the top 

 floor by means of power conveyers, and (C) raising the cans of milk 

 by means of freight elevators. If conveyers are used trouble is some- 

 times experienced by a can being improperby placed on the apparatus 



