166 BULLETIN 711, IT. S. DEPARTMENT OE AGRICULTURE. 
In connection with the following discussion of prices and weights, 
the sizes of most of the loading engines used in the region are given. 
It will be noted that there is no great range of sizes. The larger sizes 
are, of course, used in loading the larger timber. The tendency of 
the industry is to use large loading engines. The sizes used in connec- 
tion with different loading methods are suggested under " Methods/ 1 
The selling prices of loading engines are given in Table 23. The 
prices are those of March, 1916, and it can not be said that they are 
more than substantially correct for that time, since they were fur- 
nished by manufacturers to be used in this publication and not for the 
purpose of trading. The prices are on standard engines and do 
not include any special parts. 
Table 23. — Sizes, toeigJit, and prices of loading engines. 
Size. 
Type. 
Inches. 
6£by 8 
Twin- 
drum. 
6|by 9 
Double- 
drum. 
7 by 10 
Single- 
drum. 
7 by 10 
Single- 
drum. 
7 by 10 
Double- 
drum. 
7 by 10 
Three- 
drum. 
7 by 10 
Four- 
drum. 
7Jbyl0 
Three- 
drum. 
9 by 10 
T h r ee- 
drum. 
9J by 10 
T h ree- 
drum. 
Capacity of drums. 
Size and working pres- 
sure of boilers. 
Speed 
of lines. 
Weight. 
Selling 
price 
f. o. b. 
Port- 
land, 
Tacoma 
or 
Seattle. 
500 feet f-ineh line , 
780 feet f-inch line 
(Dower, 1,050 feet f-inch line , 
\Upper, 1,050 feet f-inch line 
/1,650 feet f-inch line 
\2,340 feet f-inch line 
2,580 feet f-inch line 
fain, 2,580 feet f-inch line. . . 
rip, 2,580 feet f-inch line . . 
ain, 2,580 feet f-inch line. . 
rip, 1,480 feet f-inch line.. . 
'Main upper, 1,480 feet f-inch 
line. 
Trip upper, 1,480 feet f-inch 
line. 
' Main lower, 1,480 feet f-inch 
line. 
Trip lower, 1,480 feet f-inch 
line. 
/Main, 1,200 feet f-inch line. . 
\Trip, 350 feet f-inch line 
/Main, 1,740 feet f-inch line. . 
\Lower, 830 feet f-inch line . . 
(Main, 1,100 feet 1-inch line. . 
{Trip, 1,890 feet f-inch line . . 
(Car drum, 1,180 feet f-inch 
line. 
5 by 84 inches high, 
150 working pressure. 
\ 36 by 84 inches high, 
J 150 working pressure. 
" 42 by 84 inches high, 
150 working pressure. 
44 by 106 inches high, 
175 working pressure. 
44 by 106 inches high, 
175 working pressure. 
44 by 106 inches high, 
175 working pressure. 
44 by 106 inches high, 
175 working pressure 
42 by 84 inches high, 
150 working pressure. 
_48 by 103 inches high, 
175 working pressure. 
50 by 120 inches high, 
175 working pressure. 
Feet per 
minute. 
275 
/Dower, 300 
\Upper, 425 
270 
'Main, 
Trip, 
'Main, 
.Trip, 
/Main, 
\Trip, 
/Main, 
\Trip, 
/Main, 
\Lower, 
Main, 
Trip, 
Car, 
400 
340 
400 
400 
400 
400 
400 
383 
Pounds, 
4,300 
} 9,100 
8,100 
11,000 
14,800 
16,400 
•17, 500 
11,000 
470 i} 25 ' 500 
370 
440 
440 
24,000 
$1,125 
1,240 
1,295 
1,250 
1,625 
1,800 
1,900 
1,745 
2,825 
2,675 
It was pointed out in the discussion of yarding that some oper- 
ators use an extra yarding engine for the purpose of reducing the 
time lost in moving from one setting to another. This means that 
such operators have an extra loading engine also if the power used 
in loading is furnished by a separate loading engine. 
LOADING ENGINE EEPAIE PAETS AND MATEEIALS. 
For the purpose of a timber appraisal the fixed investment in 
loading engine repair parts and materials in connection with one 
engine may be placed at about $75. 
