58 
BULLETIN 1348, U. S. DEPARTMENT OF AGRICULTURE 
Table VI.- 
-Approximate power required to 
the farm 
operate small machines used on 
[The quantity of power required in the operations appearing in this table have not been given because the 
conditions met with vary so greatly and also because of the varying conditions under which the power 
is applied. In many cases more power is required in the transmission of the power to the machine used 
than in the operating of the machine itself] 
Device 
Usual 
range 
Most 
common 
size 
Device 
Usual 
range 
Most 
common 
size 
Washing machine - -. 
Horse- 
power 
n 
II 
Y«-Ya. 
Horse- 
power 
1 
Y 
Y 
Horse and sheep clippers 
Grindstone 
Milking machine 
Horse- 
power 
its 
SI 
1 - 5 
3^10 
3 -10 
1 - 4 
Horse- 
power 
Y 
5 
Sewing machine 
Dish-washing machine - 
Emery wheel. .. ... 
Lathe 
Concrete mixer 
Refrigeration . . 
Separator (cream)... 
Churn... . . 
Cordwood saw 
Milk tester 
i 
Root cutter 
Spray pump 
Table VII. 
-Summary of work factors for operations with field implements in 
the United States ^ 
Operation or implement 
Power 
unit 
(number 
of horses) 
Daily 
duty per 
foot of 
width 2 
Range of reported widths 
Most 
usual 
width 
per horse 
Walking plow.. 
Do 
Sulky plow 
Do 
Do.. 
Gang plow 
Do 
Do 
Spike-tooth harrow: 
On fresh plowing 
On well-packed land . 
On fresh plowing 
On well-packed land. 
On fresh plowing 
On well-packed land . 
Spring-tooth harrow: 
On fresh plowing 
On well-packed land . 
On fresh plowing 
On well-packed land. 
On fresh plowing 
On well-packed land . 
Disk harrow: 
On fresh plowing 
On well-packed land. 
On fresh plowing 
On well-packed land . 
On fresh plowing 
On well-packed land . 
Land roller 
Do 
Do.... 
Grain drUl 
Do 
Do 
Do 
Corn or cotton planter: 
1-row 
Do -- 
2-row 
Covering seed potatoes. .. 
Do 
Marking planting rows... 
Do 
Acres 
L7 
2.1 
1.7 
2.2 
2.3 
2.2 
2.3 
2.3 
1.5 
1.7 
1.6 
L9 
1.8 
2.1 
1.2 
1.5 
1.4 
1.7 
1.6 
1.8 
1.1 
1.2 
1.2 
1.6 
1.7 
2.0 
L7 
1.7 
1.8 
1.46 
1.56 
1.82 
1.98 
2.28 
3.10 
1.9 
2.10 
2.62 
1.57 
2.10 
8 to 14 inches.. 
10 to 16 inches. 
do.. 
12 to 16 inches. 
14 to 18 inches. 
18 to 28 inches. 
24 to 28 inches. 
24 to 32 inches. 
6 to 12 feet.. 
8 to 16 feet.. 
10 to 26 feet. 
k to8 feet.. 
Is to 10 feet. 
}6 to 12 feet. 
to 8 feet. 
6 to 10 feet. 
-do. 
5 to 12 feet. 
do 
8 to 16 feet . 
4 to 8 feet.. 
6 to 10 feet. 
6 to 12 feet. 
8 to 12 feet. 
36 to 48 inches between rows. 
do 
do. 
24 to 32 inches between rows. 
do. 
3to 12 feet... 
do 
Feet 
0.50 
.44 
.58 
.47 
.39 
4.00 
3.50 
4.25 
3.00 
2.33 
2.00 
).00 
2.00 
4.00 
2.00 
2.50 
3.25 
2.50 
2.25 
1.75 
3.50 
1.50 
3.5 
2.00 
2.33 
3.00 
6.00 
' Based on data in Yearbook Separate 890, U. S. Department of Agriculture, 1922. 
' Ten-hour day. 
