US129744A - Improvement in hot-blast-oven pipes - Google Patents
Improvement in hot-blast-oven pipes Download PDFInfo
- Publication number
- US129744A US129744A US129744DA US129744A US 129744 A US129744 A US 129744A US 129744D A US129744D A US 129744DA US 129744 A US129744 A US 129744A
- Authority
- US
- United States
- Prior art keywords
- pipes
- blast
- hot
- improvement
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000004576 sand Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/48—Bottoms or tuyéres of converters
Definitions
- My invention consists in casting the upper ends of the diaphrag ⁇ m-pipes used in hot-air ovens for blast-furnaces together with the other i part of said pipes to form a solid and permanent top, and dispense with the plugs cemented in the open ends ofthe pipes, as heretofore made, which often burn out and fail, so that it becomes necessary to cool down the blast-furnace,
- the said pipes have heretofore been cast with open ends at the top for the escape of the gases through the core, and because the core can be more readily drawn out that way; but I now propose to cast the said pieces bottom end up to afford the same chance for the escape of the gas, and yet cast the ends to be used uppermost solid, for which I have devised a core adapted for casting the pipes in this way and forming the opening in the upper end of the diaphragm, and yet so that, by Adetaching some of tliesand at the lower end, it can be drawn out.
- Figure 1 in the drawing is a sectional elevation of one of these diaphragmpipes in the position in which I propose Ato cast it; also a i section of a core that may be used.
- Fig. 2 is a top View of the pipe as represented in Fig. l.
- A is the said pipe; B, the diaphragm 5 and C, the top, which latter I propose to cast solid with the other part, as clearlyr shown in the drawing, for which I use a bifurcated perforated tube, D, for a core-bar 0n which to pack the sand, as shown, and I make a long slot, E, in the sand ofthe core, as shown, for the mold for the diaphragm B, which said slot will terminate near the lower end, as far therefrom as the required length of the opening above .the top of said diaphragm and the top C ofthe pipe.
Description
J; MCLANAHAN.
improvementin Hot-Blast Oven-Pipes.
'Patented July 23,1872.A
J. KING MCLANAHAN, @F HOLLIDAYSBURG, PENNSYLVANIA.
IMPROVEMENT IN HO'f-BLAST-OVEN PIPES.
` specification forming part f Letters Patent No. 129,744, dated July 23, 1972.
Specification describing a new and useful Improvement in Diaphragm-,Pipes for Heaters, invented byJ. KING MCLANAHAN, of Hollidaysburg, in the county of Blair and State of Pennsylvania.
My invention consists in casting the upper ends of the diaphrag`m-pipes used in hot-air ovens for blast-furnaces together with the other i part of said pipes to form a solid and permanent top, and dispense with the plugs cemented in the open ends ofthe pipes, as heretofore made, which often burn out and fail, so that it becomes necessary to cool down the blast-furnace,
which is very expensive and often injurious to the hearth and bosh. The said pipes have heretofore been cast with open ends at the top for the escape of the gases through the core, and because the core can be more readily drawn out that way; but I now propose to cast the said pieces bottom end up to afford the same chance for the escape of the gas, and yet cast the ends to be used uppermost solid, for which I have devised a core adapted for casting the pipes in this way and forming the opening in the upper end of the diaphragm, and yet so that, by Adetaching some of tliesand at the lower end, it can be drawn out.
Figure 1 in the drawing is a sectional elevation of one of these diaphragmpipes in the position in which I propose Ato cast it; also a i section of a core that may be used. Fig. 2 is a top View of the pipe as represented in Fig. l.
Similar letters of reference indicate corresponding parts.
A is the said pipe; B, the diaphragm 5 and C, the top, which latter I propose to cast solid with the other part, as clearlyr shown in the drawing, for which I use a bifurcated perforated tube, D, for a core-bar 0n which to pack the sand, as shown, and I make a long slot, E, in the sand ofthe core, as shown, for the mold for the diaphragm B, which said slot will terminate near the lower end, as far therefrom as the required length of the opening above .the top of said diaphragm and the top C ofthe pipe. This part of the core directly below the slot for the diaphragm, being of sand only, will break off readily When 4'the core is to be drawn out but I do not limit myself to the form of the core here shown, nor t0 any particular core, my object being to cast the tops of these diaphragm-pipes on solid in any way.
Having thus described my invention, I claim as new and desire to secureby Letters Patent The diaphragm airheating pipes for air-heatf Witnesses:
W. W. JACKSON, J osIAH A. BORDER.
ATENT FTICE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US129744A true US129744A (en) | 1872-07-23 |
Family
ID=2199162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US129744D Expired - Lifetime US129744A (en) | Improvement in hot-blast-oven pipes |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US129744A (en) |
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0
- US US129744D patent/US129744A/en not_active Expired - Lifetime
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