18 
BULLETIN 338, U. S. DEPARTMENT OF AGRICULTURE. 
The mower requires repairs amounting to $0,065 per acre, or $0.60 
per day used. The total repairs necessary during the life of the 
average mower amount to $26.94, or about 66 per cent of the cost of 
a new mower at $41. 
THE HAY RARE. 
From the standpoint of shelter when not in use, the hay rake 
(Table XV) is probably the most abused implement on the farm. 
It is a tool which covers large acreages in a day, so that its low 
record of actual days of work is offset by a low overhead cost per 
acre and per ton. The average 10-foot rake in this section lasts 14.5 
years in doing 37 days of work, and raking 623 acres of hay. 
Against hay rakes in western New York costing an average of 
$24, the average depreciation charge per acre is $0,038 and the 
interest charge $0,019. These overhead charges become steadily less 
as the acreage raked annually is increased. 
Table XV. — Hay rakes — relation of work done annually to service and cost per acre and 
per day used on 1,217 farms. 
Range of area covered annually acres. 
Number of records included 
Average area covered annually acres. 
Years of service rendered 
Acres covered during life 
Days actually used during life 
Average width of rake feet. 
Cost when new 
Total cost of repairs during life 
Total interest during life, at 6 percent 
Total of depreciation, interest, and repairs during life 
Cost of hay rake: 
Per day used 
Per acre raked 
1 to 25. 
26 to 50. 
51 and 
over. 
Average. 
402 
17.8 
13.0 
231.4 
16 
8.6 
$22. 00 
3.64 
9.23 
$2.19 
.151 
525 
39.1 
15.6 
610.0 
36 
290 
84.9 
13.8 
,171.6 
67 
11.4 
$24.00 
5.93 
12.01 
$26.00 
6.07 
11.49 
41.94 
43.56 
$1.17 
.069 
$0.65 
.037 
43.0 
14.5 
623.5 
37 
9.8 
$24.00 
5.22 
11.17 
40. 
SI. 
065 
The hay rake is used without heavy repair charges, the average 
being only $0,008 per acre, or $0,141 per day used. The total re- 
pairs during its life are only $5.22, or about 22 per cent of its original 
cost. 
THE HAY TEDDER. 
The hay tedder is an implement that must be kept on hand by 
growers of considerable acreages of hay, but in some seasons it is not 
used much. Of the 416 tedders reported in Table XVI, the average 
service is 14 years, out of which only 21 days' use of the tedder is 
obtained. 
The overhead charges per acre on hay tedders average $0,112 for 
depreciation and $0,051 for interest. 
