Galvanoplastic Manipulations: A Practical Guide for the Gold and Silver Electroplater and the Galvanoplastic Operator ... Based Largely on the "Manipulations Hydroplastiques" of Alfred Roseleur |
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Page 18
... covered with a coating of metallic copper which is continually being deposited , and so perfect is the sheet of copper thus formed that , on being stripped off , it has the polish and even a counterpart of every scratch of the plate on ...
... covered with a coating of metallic copper which is continually being deposited , and so perfect is the sheet of copper thus formed that , on being stripped off , it has the polish and even a counterpart of every scratch of the plate on ...
Page 37
... covered with a small quantity of the cleansing liquid , briskly agitated , and the whole plunged into a large volume of fresh water , as soon as the acid has acted sufficiently , and threatens to fume . This method is not economical ...
... covered with a small quantity of the cleansing liquid , briskly agitated , and the whole plunged into a large volume of fresh water , as soon as the acid has acted sufficiently , and threatens to fume . This method is not economical ...
Page 42
... covered vessels of glass , stoneware , porcelain , or other ceramic ware that will resist corrosion by the acids employed . Common earthen - ware or lead - glazed pottery must be rigorously excluded . The cleansing pots should be deep ...
... covered vessels of glass , stoneware , porcelain , or other ceramic ware that will resist corrosion by the acids employed . Common earthen - ware or lead - glazed pottery must be rigorously excluded . The cleansing pots should be deep ...
Page 44
... covered with a cover of plate glass . As to the " quicking solution it is best to place it near to the gilding or silvering vats , and alongside of one or two large rinsing vessels of fresh water , for thoroughly swilling the articles ...
... covered with a cover of plate glass . As to the " quicking solution it is best to place it near to the gilding or silvering vats , and alongside of one or two large rinsing vessels of fresh water , for thoroughly swilling the articles ...
Page 46
... covered with a bluish film of chloride of silver . This method of cleansing silver is not suited for articles in which iron , zinc , etc. may be present . In this case it will be necessary to employ alkalies , and to polish after- wards ...
... covered with a bluish film of chloride of silver . This method of cleansing silver is not suited for articles in which iron , zinc , etc. may be present . In this case it will be necessary to employ alkalies , and to polish after- wards ...
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Common terms and phrases
added adherent alkaline alloys amalgam ammonia ammonium anode aqua fortis aqua regia battery become bisulphite boiling bright bronze brush burnished carbonate cast-iron CHAPTER chloride of gold cleansed coating cold color common salt copper or brass cream of tartar cyanide of potassium dead lustre described diluted dipping dissolved distilled water electric current electro electro-deposits electro-gilding Electro-Metallurgy employed filtered fire-gilding formula galvanic galvanoplastic gilders gilding bath glass gutta percha heat hydrochloric acid iron liquid mercury metal method mixture mould nickel nitrate nitrate of silver nitric acid objects obtained operation ormolu ounces oxide pieces plate platinum porcelain powder precipitate preferable prepared proportion pure pyrophosphate quantity rapidly removed require rinsed Roseleur sal-ammoniac scratch-brushed shade silvering bath simple immersion small articles soda sodium solution steel stirring stoneware sufficient sulphate of copper sulphuric acid surface thickness thin tion varnish vessel washed wire zinc
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