US40904A - Improvement in protecting lead pipe against the action of water - Google Patents

Improvement in protecting lead pipe against the action of water Download PDF

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Publication number
US40904A
US40904A US40904DA US40904A US 40904 A US40904 A US 40904A US 40904D A US40904D A US 40904DA US 40904 A US40904 A US 40904A
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water
action
improvement
pipe
lead pipe
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    • 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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
    • C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
    • C23C22/50—Treatment of iron or alloys based thereon

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  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

UNITED STATES PATENT OFFICE.
LEOPOLD BRANDEIS, OF BROOKLYN, NE? YORK.
IMPROVEMENT IN PROTECTING LEAD PIPE AGAINST THE ACTION OF WATER.
Specification forming part of Letters Patent No. 40,904, dated December 15, 1863.
alkali through the pipe to be acted upon.
To enable others skilled in the art of making lead pipev to make use of my invention, I will proceed to describe my process.
When the pipe is getting discharged from the die, Iinject the boiling solution of caustic soda and sulphur into the pipe by means of a small pump or a syringe. The solution has to remain in the pipe for someten or fifteen minutes, converting the lead into insoluble sulphide; or I immerse the whole coil of lead pipe into an iron caldron containing such a solution and protecting the outside of the pipe, as well as the inside, against the action of water thereon.
What I claim as my invention, and desire to secure by Letters Patent, is-
The production of sanitary pipe by the application at 212 Fahrenheit of a strong solution of a sulphide of an alkali to the/inside of lead pipe or lead cisterns or leaden vessels for the purpose of forming a sulphide of lead, so that Water will afterward not act on the pipe or vessel and cannot get contaminated by running through or by remaining standing in such pipe or vessel.
LEOPOLD BRANDEIS.
Vitnesses:
CHAS. E. -FRosT, M. FosTER.
US40904D Improvement in protecting lead pipe against the action of water Expired - Lifetime US40904A (en)

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US40904A true US40904A (en) 1863-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823150A (en) * 1956-12-07 1958-02-11 Devex Corp Method of descaling metals with molten alkali metal hydroxide baths and compositionstherefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823150A (en) * 1956-12-07 1958-02-11 Devex Corp Method of descaling metals with molten alkali metal hydroxide baths and compositionstherefor

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