IRON MANUFACTURE. 521 
Those at Ironton have been already mentioned. These furnaces 
are entirely lined with fire-brick, and generally the lining is made of 
shaped brick, each brick being fitted to its place, making in this way a 
more expensive but more durable lining. 
Plate 2 annexed gives the lines for some of the newest as well as 
some of the oldest coal and coke furnaces in the State. 
The capacities in cubic feet, daily production and yield per cubic 
foot for the same furnaces is given in the following table: 
eee [ &. y 
Capacities in cubic feet. ey ® 
on ra 2, 
=o) = 
Kon D 
-Name of Furnace. a 7 2 & 
Bat re = = Be Qa 
| S) S) Pe Sie 
TD aa] an i AY 'S) 
Clevel. R. M. Co., Central Furn...| 9,369 5,620 707 15,696 200 78 
IETSITNA IO GIRS has HEE CREE EES: CO Se vale ciate 3,254 2,886 2,034 8,674 48 180 
TEROFOWNG 560000000.09680000000060000 000000000000 1,676 1,035 149 2,860 17 168 
SCT ree re ec Maas cn dacaldes caaebuaee 2,730 1,163 193 4,086 18 226 
WV VCE ILS COMMUr Ie aiire Seiccene siete oeiecerasinsse case's 3,054 703 84 4141 22.6 183 
UVM eo Teese sree tea ie eee ule Somat moans 3,412 1,270 147 4.829 24.0 200 
PENAL FOTN ee etea eee oe ae oa cee Swed tated 2,470 1,259 101 3,830 16 239 
HATO Te otc meen cc oa eaaweces 2,955 1,098 118 4171 15 278 
Samallaveereraet, eammeennthed. oa Zo. Ske}, 3,019 1,266 141 4,426 31 143 
ESTA Mee ee ols MIEN So ccielg woees ene od 2,488 373 109 2,970 17 174 
JB leyayeatraver IEYOYGI ocddqoenge6680 60066600000 4,869 2,522 331 MUA Qallswoccetventslkeerceeae 
IND SHOT Goose ee eee ASTD | BEAR |ccoocococe HOAGH eres ose (aes 
The Akron furnace is not figured on the plate referred to. The 
capacities above given for it are calculated from the lines at present 
being built; it has no angle between the hearth and the bosh; it is 58 
feet 103 in. high, 10 feet at the throat, 16 feet in the bosh, and 7 feet 
at the bottom of the hearth. The tuyeres centers 54 inches above 
the sole. | 
The above table of course only shows a small number of the fur- 
naces of the State, but includes about all the varieties of lines. The 
Central furnace, Himrod furnace, Akron furnace and Hanging Rock 
furnace represent the newest furnaces built in the Mahoning and Hock- 
ing Valleys and the Hanging Rock region; the others show the older 
practice. 
The Mahoning Valley furnaces represent as a rule the newest and 
largest plants. Their location and general dimensions have been already 
given. To show the recent improvements and the general arrange- 
