GB343203A - A process and device for cleaning precious metals, more particularly silver plate - Google Patents

A process and device for cleaning precious metals, more particularly silver plate

Info

Publication number
GB343203A
GB343203A GB3660629A GB3660629A GB343203A GB 343203 A GB343203 A GB 343203A GB 3660629 A GB3660629 A GB 3660629A GB 3660629 A GB3660629 A GB 3660629A GB 343203 A GB343203 A GB 343203A
Authority
GB
United Kingdom
Prior art keywords
aluminium
articles
employed
holes
precious metals
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
Application number
GB3660629A
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.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB3660629A priority Critical patent/GB343203A/en
Publication of GB343203A publication Critical patent/GB343203A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
    • 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
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/20—Other heavy metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Catalysts (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)

Abstract

343,203. Electrolysis. MANN, C., 4, R³ckerstrasse, Munich, Germany. Nov. 29, 1929, No. 36606. [Class 41.] Metals, pickling; electrodes.- Articles of precious metals are cleaned by self-excited electrolytic action set up by immersion in contact with a metal such as aluminium in an alkaline solution, e.g. a solution of sodium bicarbonate, to which is added wood carbon, active carbon or active silicic acid as a catalyst. Instead of aluminium, chemically pure zinc or a silvercontaining aluminium alloy may be employed as anode metal. The anode may be in the form of a chain which lies on and between the articles. Alternatively it may be in the form of a basket container built up of rods of star section or otherwise formed to present a large area. Rods over which are wound wire helices may be employed. A hollow rod d, shown in section, may serve as container for the catalytic material f with which the electrolyte communicates through holes d<2>. The holes are protected by a removable porous cover e which may be of rubber sponge, felt, or a fabric composed of fine silver wire.
GB3660629A 1929-11-29 1929-11-29 A process and device for cleaning precious metals, more particularly silver plate Expired GB343203A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3660629A GB343203A (en) 1929-11-29 1929-11-29 A process and device for cleaning precious metals, more particularly silver plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3660629A GB343203A (en) 1929-11-29 1929-11-29 A process and device for cleaning precious metals, more particularly silver plate

Publications (1)

Publication Number Publication Date
GB343203A true GB343203A (en) 1931-02-19

Family

ID=10389653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3660629A Expired GB343203A (en) 1929-11-29 1929-11-29 A process and device for cleaning precious metals, more particularly silver plate

Country Status (1)

Country Link
GB (1) GB343203A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167772A (en) * 1984-12-04 1986-06-04 Brian Vaughan Morris Cleaning silver
GB2176499A (en) * 1985-05-14 1986-12-31 Howard Marc Gold Article and method for tarnish removal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2167772A (en) * 1984-12-04 1986-06-04 Brian Vaughan Morris Cleaning silver
GB2176499A (en) * 1985-05-14 1986-12-31 Howard Marc Gold Article and method for tarnish removal

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