US478488A - White-lead corroding-pit - Google Patents
White-lead corroding-pit Download PDFInfo
- Publication number
- US478488A US478488A US478488DA US478488A US 478488 A US478488 A US 478488A US 478488D A US478488D A US 478488DA US 478488 A US478488 A US 478488A
- Authority
- US
- United States
- Prior art keywords
- pit
- lead
- corroding
- white
- ventilating
- 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
- 229910000004 White lead Inorganic materials 0.000 title description 6
- RYZCLUQMCYZBJQ-UHFFFAOYSA-H lead(2+);dicarbonate;dihydroxide Chemical compound [OH-].[OH-].[Pb+2].[Pb+2].[Pb+2].[O-]C([O-])=O.[O-]C([O-])=O RYZCLUQMCYZBJQ-UHFFFAOYSA-H 0.000 title description 6
- 238000005260 corrosion Methods 0.000 description 6
- 239000002657 fibrous material Substances 0.000 description 4
- 230000000875 corresponding Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000414 obstructive Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/44—Carbon
- C09C1/48—Carbon black
- C09C1/50—Furnace black ; Preparation thereof
Definitions
- My invention is an improvement in that class of structures which are used for effecting the corrosion of lead, and to this end are provided with side openings and a central vertical tube or chimney to facilitate the circulation of air, upon which the rapidity of the corrosion in a great measure depends.
- I dig a pit A in the earth and provide a suitable floor B and line the pit with walls 0 of masonry. As the walls are carried up blocks of wood are laid with the masonry, which are afterward driven out, leaving the ventilating-holes a a, and with these holes I connect pipes 1), lead-. ing to the surface of the ground, one pipe to each set of ventilating-holes a a. In the center of the pit I erect a perforated ventilating-shaft D, which extends above the surface of the ground and above the top of the superstructure E. The said superstructure is erected upon the walls 0.
- the lead is placed in the pit in layers, alternating with layers of wet fibrous material in the usual manner. As the corrosion proceeds heat is generated and a column of heated air is carried up the ventilating-shaft D, thus causing fresh air to enter through the pipes b, creating a rapid circulation through the layers of fibrous material between the layers of lead, thus hastening the process.
- a pit is superior to the Wooden corrodiughouse usually built above ground in point of strength, durability, and economy, as well as the conservation of heat.
- the tubes 1) are necessary parts or features of such pit, since they enable air to enter freely and prevent obstruction of the openings a, which would otherwise occur.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Mushroom Cultivation (AREA)
Description
UNITED STATES PATENT OFFICE.
WILLIAM HENRY \VETHERILL, OF'PHILADELPHIA, PENNSYLVANIA.
WHITE-LEAD. CORRODING-PIT.
SPECIFICATION forming part of Letters Patent No. 478,488, dated July 5, 1892.
Application filed March 1, 1892. $erial No. 423,385. (No model.)
To all whom it may concern:
Be it known that I, WILLIAM HENRY WETH- ERILL, of Philadelphia,in the county of Philadrawings, forming a part thereof, in which- Figure 1 is a vertical transverse section of my improved white-lead corroding-pit, taken on the line so a: in Fig. 2; and Fig. 2 is a horizontal section taken on line y y in Fig. 1.
Similar letters of reference indicate corresponding parts in both views.
My invention is an improvement in that class of structures which are used for effecting the corrosion of lead, and to this end are provided with side openings and a central vertical tube or chimney to facilitate the circulation of air, upon which the rapidity of the corrosion in a great measure depends.
In carrying out my invention I dig a pit A in the earth and provide a suitable floor B and line the pit with walls 0 of masonry. As the walls are carried up blocks of wood are laid with the masonry, which are afterward driven out, leaving the ventilating-holes a a, and with these holes I connect pipes 1), lead-. ing to the surface of the ground, one pipe to each set of ventilating-holes a a. In the center of the pit I erect a perforated ventilating-shaft D, which extends above the surface of the ground and above the top of the superstructure E. The said superstructure is erected upon the walls 0.
The lead is placed in the pit in layers, alternating with layers of wet fibrous material in the usual manner. As the corrosion proceeds heat is generated and a column of heated air is carried up the ventilating-shaft D, thus causing fresh air to enter through the pipes b, creating a rapid circulation through the layers of fibrous material between the layers of lead, thus hastening the process.
A pit is superior to the Wooden corrodiughouse usually built above ground in point of strength, durability, and economy, as well as the conservation of heat. The tubes 1) are necessary parts or features of such pit, since they enable air to enter freely and prevent obstruction of the openings a, which would otherwise occur.
Having thus described my invention, I claim as new and desire to secure by Letters Patent- The combination, with the pit-walls O, having the ventilating-holes a a, of a series of pipes 19, open at the top, embedded in the surrounding earth, arranged around the walls exteriorly, and leading upward from said holes, as shown and described, for the purpose specified. A
WILLIAM HENRY WETIIERILL.
Witnesses:
O. H. WATSON, J. A. DOWDE.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US478488A true US478488A (en) | 1892-07-05 |
Family
ID=2547342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US478488D Expired - Lifetime US478488A (en) | White-lead corroding-pit |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US478488A (en) |
-
0
- US US478488D patent/US478488A/en not_active Expired - Lifetime
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