US110081A - Improvement in process of removing earthy matters from bronze and other castings - Google Patents
Improvement in process of removing earthy matters from bronze and other castings Download PDFInfo
- Publication number
- US110081A US110081A US110081DA US110081A US 110081 A US110081 A US 110081A US 110081D A US110081D A US 110081DA US 110081 A US110081 A US 110081A
- Authority
- US
- United States
- Prior art keywords
- castings
- bronze
- casting
- improvement
- clay
- 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
- 238000005266 casting Methods 0.000 title description 16
- 238000000034 method Methods 0.000 title description 4
- 229910000906 Bronze Inorganic materials 0.000 title description 3
- 239000010974 bronze Substances 0.000 title description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 title description 3
- 239000004927 clay Substances 0.000 description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229960002050 hydrofluoric acid Drugs 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000000899 Gutta-Percha Substances 0.000 description 1
- 240000000342 Palaquium gutta Species 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229920000588 gutta-percha Polymers 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
Definitions
- I bronze, orcomposition casting If a casting is made under pressure in a mold made of burned clay, the fluid metal is forced into the smallest cavities of the mold. The subsequent shrinkage of the metal will then hold a certain quantity of the burned clay or sand of the mold in the deep and sharp cavities of the casting, so that it is impossible to remove such adhering matterof the mold by any mechanical means without destroying the fine face and outlines of a perfect casting.
- the aid of chemicals for the purpose of/ removing said adhering burned clay or sand is the object of the invention.
- the chemical used is of such a nature that it will soften the burned clay, so that it may be washed off. At the same time it does not act on the metal.
- My invention is carried out effectually in the following manner: When the casting is removed from the mold of burned clay, a considerable portion of clay will adhere to the casting. All that can be removed by rapping and jarring the casting is loosened in this manner. The casting is then placed in a gutta percha box containing hydrofluoric acid. The said acid will act at once on the bases of the burned clay, which appear to be siliceous, thereby softening the burned clay in the course of two or three hours, according to the strength of the acid, so that it may be also silver, gold, lead, and type metal. (Iron is slightly acted on by the fluorio acid, and can not be cleaned without some injury to the casting.)
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Detergent Compositions (AREA)
Description
UNITED STATES PATENT OFFICE MIoHAnL SMITH, OF oMnRvILLE, MAssAoHUSETTs, ASSIGNOR To RUSSELL & ERWIN MANUFAoTURnve COMPANY, OF NEW BRITAIN, CONN.
IMPROVEMENT IN PROCESS OF REMOVING EAliTHY MATTERS FROM BRONZE AND OTHER CASTINGS.
Specification forming part of Letters Patent No. 110,081, dated December 13, 1870.
Taall whomit may concern.-
successfully removed by mechanical means without destroying the fine lines of a brass,
I bronze, orcomposition casting. If a casting is made under pressure in a mold made of burned clay, the fluid metal is forced into the smallest cavities of the mold. The subsequent shrinkage of the metal will then hold a certain quantity of the burned clay or sand of the mold in the deep and sharp cavities of the casting, so that it is impossible to remove such adhering matterof the mold by any mechanical means without destroying the fine face and outlines of a perfect casting. To employ the aid of chemicals for the purpose of/ removing said adhering burned clay or sand is the object of the invention. The chemical used is of such a nature that it will soften the burned clay, so that it may be washed off. At the same time it does not act on the metal.
Operation: My invention is carried out effectually in the following manner: When the casting is removed from the mold of burned clay, a considerable portion of clay will adhere to the casting. All that can be removed by rapping and jarring the casting is loosened in this manner. The casting is then placed in a gutta percha box containing hydrofluoric acid. The said acid will act at once on the bases of the burned clay, which appear to be siliceous, thereby softening the burned clay in the course of two or three hours, according to the strength of the acid, so that it may be also silver, gold, lead, and type metal. (Iron is slightly acted on by the fluorio acid, and can not be cleaned without some injury to the casting.)
The utility of the process and agent specified above for the purpose of removing burned clay and sand from delicate castings, especially castings made under pressure, can be bestap-' preciated by those who know by experience with what tenacity the clay and sand adhere to compression-castings, in many instances I rendering it apparently Impossible to remove the adhering substance without destroying the whole casting. Another way in which this useful agent maybe applied is this: The fluohydric acid, in its gaseous form, may be made to act on the clay adhering to the casting in a. dry state, which dissolves the clay into dust; but this process is dangerous, as the fluoricacid gases are deadly poison when inhaled. The use of the acid in its liquid form is'harmless, only care is necessary not to get it into wounds of the skin, which would cause bad sores.
Having described a simple manner of using my invention,what I claim as new is- Fluoric, fiuohydric, or hydrofluoric acid, or the chemical equivalent thereof, for the purpose of softening and removing burned clay, sand, or other earthy matter adhering to metallic castings, Substantially as described.
MICHAEL SMITH. Witnesses:
J OHN STEPP, JosEPH LEGER.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US110081A true US110081A (en) | 1870-12-13 |
Family
ID=2179553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US110081D Expired - Lifetime US110081A (en) | Improvement in process of removing earthy matters from bronze and other castings |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US110081A (en) |
-
0
- US US110081D patent/US110081A/en not_active Expired - Lifetime
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