Machine Construction Hen 
TABLE 37 
MACHINE CONSTRUCTION 
Quantity UsEep | 
ANNUALLY Averees Total cost Grownin [Grown out of 
f. o. b. New York. | New York. 
per Lee factory (Feet b. m.) | (Feet b. m.) 
Kinp or Woop 
Feet b. m. | Percent eet 
SROGA AE 2/4. sebeys. oii 1,779,000 | 100.00 | $53 76 $95,644 812,000 967 ,000 
Hardomaple.(5...... ). 295,000 16.58 | $43 71 $12,894 278,000 17,000 
Yellow poplar....... 266 ,000 14.95 80 90 2519) eee oe 266,000 
White SIG a Wet hae: 5s 212,000 11.92 59 03 12,514 127,000 85,000 
Wihttetosk.. >... |... 175,000 9.83 43 07 7,537 161,000 14,000 
IBSSSWOOU ss <3. boss: 144 ,000 8.09 56 66 8,159 21,000 123,000 
SLC iN 4 Oe ee eee 122,000 6.86 49 00 53978) |) aaa okaaaer 122,000 
Beech 119,000 6.69 32 91 3,916 60,000 59 ,000 
DNAS Oe eee 91,000 5.13 56 35 5,128 28,000 63,000 
Hemlock......... ae 85,000 4.78 50 00 4,250 30,000 55,000 
Southern yellow pine 71,000 3.99 58 88 B= 180) | ae ouy eres 71,000 
IBinchina Por t.. 24s3<,. 59 ,000 3.31 33 33 1,966 45,000 14,000 
1B oo oB 2:3 Getieee 50,000 2.81 34 80 1,740 50) OOO8 |P tence eres 
Loblolly pine....... 43,000 2.42 71 00 305358 aee re 43,000 
@ypress s,s ss 31,000 1.74 73 87 2290) pois ae eee 31,000 
CRestnutiesty icles cc 12,000 .68 30 00 360 10,000 2,000 
Cherry (black)...... 2,000 vil 40 00 SO Bekiees. eee 2,000 
Sort maple... :...... 2,000 ala 40 00 80 2), OOO) ae eertrie. fe 
PuLLEys AND CONVEYORS 
There are so many different kinds of pulleys and conveyors 
that a detailed discussion is impracticable in a report of this 
kind. Table 38 contains the data relative to two rather dis- 
tinct classes of articles, the one having to do with the amount 
of wood consumed for the conveyance of belting, while the 
second class shows the amount consumed in the manufacture 
of “tackle blocks’ and tackle-block shells used for construc- 
tion purposes. 
Pulleys were formerly very crude articles consisting of 
rough boards nailed and glued together. With the development 
of modern mechanics, great ingenuity was brought to bear on 
his branch of shop equipment and several factories put im- 
proved wood pulleys on the market. It required much time to 
construct them properly and for a while iron made great 
inroads as a substitute. Good dry-kilns, modern woodworking 
machinery, and special lathes developed the modern wood 
