UTILIZATION OF WASTE SEED FROM THE TOMATO. 27 
Table IX. — Operating costs of assembling and drying seed at a a 
center and at the pulping plants. 
tilization 
Cost. 
Prying 
center. 
Pulping 
plant. 
S9, 250 
11, 152 
4,000 
1,175 
25, 994 
14,900 
16, 800 
4,200 
1,175 
7,806 
Total 
51, 571 
34, 881 
EQUIPMENT FOR EXPELLING THE OIL. 
The same building which housed the cleaning and drying ma- 
chinery during the pulping season could be equipped with oil ex- 
pellers for crushing the seed during the winter months. For such 
a plant the following equipment would be necessary : 
5 expellers, 1 sump tank, 2 conveyors, 1 filter press, 2 
grinding mills, 3 pumps, 2 tanks, piping, and miscella- 
neous. The estimated cost is $30, 000 
The operating cost for expelling the oil from 1,000 tons of dry 
seed, with the depreciation cost of the machinery and the labor and 
power charges at current rates, is as follows : 
Depreciation of the plant, at 10 per cent- $3, 000 
Labor (1 mechanic, 1 engineer, 1 fireman, 2 laborers, and 1 
foreman) 6,100 
Power (600 tons of coal at $8 per ton) 4, 800 
Management (manager at $3,500, clerk at $1,200) for 9 
months 3, 525 
Total 17,425 
The installation of a solvent-extraction plant would probably cost 
about the same as an expeller plant, namely, $30,000. 
The operating cost of extracting 1,000 tons of dry seeds is esti- 
mated to be as follows : 
Depreciation of the plant, at 10 per cent 3, 000 
Labor 6, 100 
Power (500 tons of coal at $8 per ton) 4,000 
Management 3, 525 
Total 16, 625 
The above operating costs for both expeller and solvent extraction 
are perhaps rather high, since the figures are based on the output of 
tomato seed only and represent but a comparatively short period of 
time, the equipment being idle for a large portion of the year unless 
something else, such as grape seed, pumpkin seed, or some other 
oleaginous material, can be worked during this idle period. In the 
event that other materials were worked, the overhead cost would be 
reduced accordingly and the profits augmented proportionately. 
