1080 



SUCCESSFUL FARMING 



Table XIII. — Work Capacity of Farm Machines* {Continued). 



Kind of Machine. 



Size of 

 Machine. 



Horse 

 Power 



Re- 

 quired. 



Speed per hr. Acre 



in Miles, or [ Capacity 



Revolutions per Hour 

 per Minute, i 



Threshing separator, pea and 



bean .special , 12 inch. . . 



Threshing separator, pea and 



bean special 20 x 32 in. 



Threshing separator, pea and 



bean special 26 x 44 in . 



Threshing separator, pea and 



bean special 36 x 54 in. 



Threshing separator, small grain 



(wheat and flax) 18 x 36 in . 



Threshing separator, oats and 



barley 18 x 36 in . 



Threshing separator, wheat and 



flax 28 x 50 in . 



Threshing separator, oats and I 



barley I 28 x 50 in . 



Threshing separator, wheat and | 



flax 32 x 54 in . 



Threshing separator, oats and 



barley 32 x 54 in . 



Threshing separator, wheat and 



flax 36 x 58 in . 



Threshing separator, oats and 



barley 33 x 58 in . 



Threshing separator, wheat ami 



flax 40 x 62 in . 



Threshing separator, oats and 



barley 40 x 62 in . 



2-4 

 6-8 

 10-14 

 14-18 

 15- IS 

 15-18 

 30-40 

 30-40 

 40-50 

 40-50 

 50-60 

 50-60 

 60-80 

 60-80 



300-350 

 300-350 

 300-350 

 300-350 

 1050-1150 

 1050-1150 

 750-800 

 750-800 

 750-800 

 750-800 

 750-800 

 750-800 

 750-800 

 750-800 



Bushel 

 Capacity 

 per Hour. 



8-10 



35-50 



50-80 



80-100 



60 



220 



75 



275 



125 



300 



160 



350 



200 



375 



Note. — Data on ensilage cutters and shredders by courtesy of The International Harvester Co.; 

 pea thresheis, J. 1.. Owens Manufacturing Co.; grain separators, J. I. Case Threshing Machine Co.; all 

 other data by the author. 



Horse power for engine plows is horse power at the draw-bar; for threshing machines, shredders and 

 ensilage cutters, horse power on the belt. 



The work capacity of farm machines varies through very wide limits, due to soil and crop conditions, 

 speed and stamina of horses, size and shape of fields, condition of the machine to stand steady work, and 

 the experience and character of the operator. In this table there is shown the maximum capacity per 

 hour for the common tillage, planting and harvesting machines at the standard speeds for best work, also 

 the average capacity per hour based on observations of the actual average daily capacity of farm machines. 



The actual average work capacity of any farm machine may be determined very closely by sub- 

 tracting lf> to 20 per cent from the maximum capacity at a given speed — -this deduction being made for 

 time lost in turning, resting horses, oiling, adjusting, filling seed hoppers, etc.; or, in ease of power machin- 

 ery, for oiling, adjusting and taking fuel. The capacity of certain machines such as the corn binder and 

 the' potato digger are especially subject to variation. For best results these machines must be driven 

 at comparatively high speed (2 '2 to 3 miles per hour) and this speed quickly tires the horses. In order 

 to maintain maximum capacity it is necessary to change horses once or twice a day. If the horses are 

 not changed the capacity varies greatly according to the amount of rest allowed. 



* From " Field Management and Crop Rotation," by Parker. 



