US1720215A - Method of producing tarnish-resisting silver and silver plate - Google Patents

Method of producing tarnish-resisting silver and silver plate Download PDF

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Publication number
US1720215A
US1720215A US673028A US67302823A US1720215A US 1720215 A US1720215 A US 1720215A US 673028 A US673028 A US 673028A US 67302823 A US67302823 A US 67302823A US 1720215 A US1720215 A US 1720215A
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US
United States
Prior art keywords
silver
plate
tarnish
mercury
resisting
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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
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US673028A
Inventor
Gray Daniel
Richard O Bailey
William S Murray
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ONEIDA COMMUNITY Ltd
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ONEIDA COMMUNITY Ltd
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Publication date
Application filed by ONEIDA COMMUNITY Ltd filed Critical ONEIDA COMMUNITY Ltd
Priority to US673028A priority Critical patent/US1720215A/en
Application granted granted Critical
Publication of US1720215A publication Critical patent/US1720215A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/06—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases
    • C23C10/08—Solid state diffusion of only metal elements or silicon into metallic material surfaces using gases only one element being diffused

Definitions

  • This invention relates to a process for producing tarnish-resisting silver and silver plate.
  • the metal preferred for this purpose is mercury.
  • the present invention has particular reference to the production of silver or silver plate of substantially pure silver except for the presence in it of the mercury, or silver or silver plate having the silver-content of coin or sterling silver, namely about 90% or 92%%', the other content being a base metal, such as copper, and mercury.
  • this tarnish resisting silverand plate are-preferably produced by the use of mercury, as before stated, and the exposure of the silver or silver plate to the vapor of the mercury in a low temperature furnace of the closed mufile type.
  • the silver or silver plate is taken in an unfinished state, so far as the burnishing, polishing, etc. of its surface is concerned, as in such state it absorbs the mercury more quickly than it would if its surface were finished.
  • the silver or silver plate preferabl in its unfinished state and the mercury w ich is to combine with it Serial No. 673,028. Renewed September 27, 1928.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)

Description

Patented July 9, 1929.
UNITED STATES PATENT OFFICE.
, DANIEL GRAY AND RIcIIARD o. BAILEY, or ONEIDA, AND- ILLIAM s. MURRA or UTIGA, NEW YORK, ASSIGNORS TO ONEIDA COMMUNITY, LIMITED, or ONEIDA, .NEW YORK, A CORPORATION on NEW YORK.
l METHOD OI PRODUCING TARNISH-RESISTING SILVER AND SILVER PLATE.
No Drawing. Application filed November 5, 1923,
This invention relates to a process for producing tarnish-resisting silver and silver plate. c
,The tarnishing of silverware or silver plated .ware, on the shelves of the dealer, and in ;a house or other place of use, is a source of much inconvenience and expense in that frequent cleaning of the articles, by rubbing, polishing, etc. is necessary to restore them to their natural color and brightness, such cleaning also in time resulting in more or less wear of the polished surface and its surface ornamentation.
It is the object of the present invention to provide a process which will render such silver and silver plated ware tarnish resisting and to thus overcome these objec tions.
This is accomplished according to the present invention by combining with the silver or silver plate a metal or metals which, in such combination, will have a shielding action as to tarnish so that the article as a Whole will be tarnish resisting.
The metal preferred for this purpose is mercury.
The present invention has particular reference to the production of silver or silver plate of substantially pure silver except for the presence in it of the mercury, or silver or silver plate having the silver-content of coin or sterling silver, namely about 90% or 92%%', the other content being a base metal, such as copper, and mercury.
According to the present invention this tarnish resisting silverand plate are-preferably produced by the use of mercury, as before stated, and the exposure of the silver or silver plate to the vapor of the mercury in a low temperature furnace of the closed mufile type.
Preferably the silver or silver plate is taken in an unfinished state, so far as the burnishing, polishing, etc. of its surface is concerned, as in such state it absorbs the mercury more quickly than it would if its surface were finished.
Stated more indetail, the silver or silver plate, preferabl in its unfinished state and the mercury w ich is to combine with it Serial No. 673,028. Renewed September 27, 1928.
mercury free from any agentsthat wouldinterfere with the absorption of the mercury by the silver or silver plate.
Good results are obtainable by the use of 10 parts by weight of mercury to 90 parts by weight of silver or silver plate, but a lower percentage or quantity of mercury is preferable, as for example, 2 parts by weight of mercury to 98 parts by weight of the silver or silver plate. By weight of the silver plate is meant, the weight of the silver plate or plating itself, and does not include the weight of the base on which it is plated.
What is claimed is:-
1. The herein described processes of producing tarnish resisting silver or silver plate which consist in vaporizing mercury and exposing the silver or silver plate to such vapor in an atmsophere free of oxygen and other agents which would interfere with the absorption of the mercury by the silver or silver plate.
2. The herein described processes of producing tarnish resisting silver or silver plate having a silver content of about 90% or more, which consists in vaporizing mercury and exposing the silver or silver plate to such vapor in an atmosphere free of oxygen or other agents which would interfere with the absorption of the mercury by the silver or silverplate, the mercury so vaporized and absorbed constituting not more than 10% of the finished product.
In testimony whereof, we have hereunto set our hands.
DANIEL GRAY. RICHARD o. BAILEY. j ILLIA s. U RA
US673028A 1923-11-05 1923-11-05 Method of producing tarnish-resisting silver and silver plate Expired - Lifetime US1720215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US673028A US1720215A (en) 1923-11-05 1923-11-05 Method of producing tarnish-resisting silver and silver plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US673028A US1720215A (en) 1923-11-05 1923-11-05 Method of producing tarnish-resisting silver and silver plate

Publications (1)

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US1720215A true US1720215A (en) 1929-07-09

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446996A (en) * 1942-06-06 1948-08-17 Bell Telephone Labor Inc Metal objects coated with lead alloys
US3954456A (en) * 1972-08-25 1976-05-04 Square D Company Electrical contact materials and methods of making the same
US3960553A (en) * 1972-08-25 1976-06-01 Square D Company Electrical contact materials and methods of making the same
US3966464A (en) * 1972-08-25 1976-06-29 Square D Company Electrical contact materials and methods of making the same
US3970451A (en) * 1972-08-25 1976-07-20 Square D Company Electrical contact materials and methods of making the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2446996A (en) * 1942-06-06 1948-08-17 Bell Telephone Labor Inc Metal objects coated with lead alloys
US3954456A (en) * 1972-08-25 1976-05-04 Square D Company Electrical contact materials and methods of making the same
US3960553A (en) * 1972-08-25 1976-06-01 Square D Company Electrical contact materials and methods of making the same
US3966464A (en) * 1972-08-25 1976-06-29 Square D Company Electrical contact materials and methods of making the same
US3970451A (en) * 1972-08-25 1976-07-20 Square D Company Electrical contact materials and methods of making the same

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