. The pictorial sketch-book of Pennsylvania, or, Its scenery, internal improvements, resources, and agriculture, populary described . now of no manmore thoroughly versed in all the practical intricacies and politicaleconomy of the coal and iron trade of Pennsylvania.) The height ofthis furnace is thirty-seven and a half feet; the top six feet in diame-ter ; hearth, five feet high; tryeres twenty-two inches above its bot-tom ; hearth, five feet square at the base, and six feet at the top ;boshes inclined 07^°, or six inches to the foot, and measure fuurteenfeet at their largest diameter. Many o
. The pictorial sketch-book of Pennsylvania, or, Its scenery, internal improvements, resources, and agriculture, populary described . now of no manmore thoroughly versed in all the practical intricacies and politicaleconomy of the coal and iron trade of Pennsylvania.) The height ofthis furnace is thirty-seven and a half feet; the top six feet in diame-ter ; hearth, five feet high; tryeres twenty-two inches above its bot-tom ; hearth, five feet square at the base, and six feet at the top ;boshes inclined 07^°, or six inches to the foot, and measure fuurteenfeet at their largest diameter. Many of the anthracite furnaces re-ceive their charges of ore and fuel by a very ingenious contrivance,10* P 114 LOCOMOTIVE SKETCHES. which was first introduced at the Crane works, near Easton, and isapplied at Phoenixville, Safe Harbor, and other places. A reservoir ofwater is put upon the trunnel-head bridge, where it is kept filled bymeans of force-pumps from the blast-engine. An iron chain sus-pended over a pulley carries one or two buckets of sheet iron, sufii-ciently heavy, when filled, to balance a charge of ore or coal. When. CROSS-SECTION OF AN ANTURACITE FURNACE. either of these is loaded below, the filler turns a stop-cock, and fillsthe water bucket or barrel, which descends and lifts up the valve in the botton of the water-cask, which is opened by a simplearrangement, permits the water, when it arrives at the proper place,to escape. The platform containing the ore or coal, relieved from itsburthen, is charged with empty boxes or barrows, after which it MANUFACTURE OF IRON 115 descends, and the water barrel again rises. This arrangement ispeculiarly advantageous when the furnace has no rear ele° ation bywhich to approach the trunnel-head, as is the case at the points men-tioned, as well as the furnace of Ex-Govcrnor Porter, situated alono-side of the railroad, at Harrisburg. The opposite figure exhibits the inte-rior of a Pennsylvania charcoal furnace ofthe usua
Size: 1379px × 1813px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade, booksubjectminesandmineralresources
