MILK-PLANT OPERATION". 



13 



Using the data in 

 Tables 3 and 4, it is 

 possible to make a com- 

 parison of the labor 

 economy of the various 

 methods of filling and 

 capping for plants of va- 

 rious sizes, Thegraphs, 

 Figures 10 and 11, 

 are based on these data. 

 Labor in the plant was 

 considered as costing 50 

 cents an hour and the 

 allowance for deprecia- 

 tion and repairs on the 

 equipment each year 

 was considered as 20 per 

 cent of the purchase 

 price. The values used 

 m the calculations for 

 the various machines 

 were based upon the 

 average prices at which 

 the particular machines 

 used at these plants 

 could be purchased at 

 the time (1922). 



Figure 10 shows the 

 comparative costs for 

 labor and for interest 

 and depreciation on 

 equipment for plants 

 bottling less than 10,000 

 bottles daily and using 

 only one machine. The 

 figures used are taken 

 from Table 3 and are 

 based on labor costs 

 obtained at 81 such 

 plants. It will be noted 

 that for this size of 

 plant, if only one ma- 

 chine is used the auto- 

 matic macliincs of the 

 rotary and single-row 

 t3r|)es are the most eco- 

 nomical. The higher 

 purchase price of the 

 large automatic machine 

 makes its use practically 

 ])rohibitivc for i)lants of 

 small capacities. 



The costs with the ma- 

 chine filler and capper 

























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Fig. 10.— Comparative costs for labor and (or interest and depro- 

 ciatiou on equipment in five methods of bottling milk, where 

 one macliine is used, based on lalior costs at SI plants using one 

 machine eAch and bottling less than 10,000 bottles daily. 



