Deposition of Copper; Deposition of Copper by Simple Immersion; Weil's improved Method of Coppering by Simple Immersion for large objects; Composition of Depositing Solution. Electro-deposition of Copper; two methods by which Electro-deposits of Copper may be obtained; Solution used on Metals or Alloys of Zinc, Iron, Tin, Lead, etc.; Practice where a Copper Deposit of considerable thickness is desired upon Iron, Zinc, etc. The deposition of Copper from solutions of Double Salts; Preparation Formula for Bath equally well adapted for all metals or alloys, and to Hot or Cold Bath for Tin, Bronze, or large pieces of Zine; Bath for The hot process much more rapid than the Cold; Various articles which may be treated by this method; Perforated stoneware ladle for small articles of Zinc, such as hooks, nails, etc. Anode to be placed on top of the ladle The use of Sulphate or Cyanide of Copper and Carbonate of Copper Treatment of the articles in the second Copper Bath; preparation of the Lead Bath; Elsner's procedure for the Electro-deposition of Copper; Formula for the Galvanic deposition of Copper on Iron or Zinc . Use of Brass deposit in the Manufacture of articles of "Bronze compo- sition;" Advantages of the Brass surface on these articles; Prelimi- nary and finishing operations; Best Temperature for this class of Formulæ for Brassing Baths; Cold Brassing Bath for all Metals Preparation of the Bath; Effect of the presence of Arsenious Acid; how Arsenious Acid may be replaced; Tanks for Baths for Electro- How to maintain the proper equilibrium with the Bath Brassing Baths for Wrought and Cast-Iron, Steel, Tin, and Zine Disposition of the Baths for Brass-plating; to render the Electro-brass- ing of Iron and Zinc lasting; Electro-brassing and Bronzing by sim- Winckler's Procedure for Electro-brassing Zine, Tin, Copper, Iron, De La Salzede's Formulæ for Electro-brassing To obtain Metallic Deposits resembling various alloys-Argentan, Ger- Ruolz's Electro-bronzing Solution; Elsner's Electro-bronzing Solution, The Depositing Vat and the Bath; the Difficulty of keeping Brassing Solutions in proper Working Condition and the Mode of Remedying; By Exchange; by the Galvanic Way; by the Method of Contact or Coating Clean Articles of Copper, Brass, and Bronze, in contact with Cuttings of Tin in a Boiling Solution of Peroxide of Tin in Caustic Elsner's Electro-tinning Bath; Winckler's Bath; Munro's and Cox's Tinning by Contact with another Metal, with Formulæ of Baths; Subsequent Operations; Formula for Tinning Zine; Weil's and Baths for Tinning by Immersion; Hess's, Stolba's, and Urquhart's The Treatment of Preparation when burned; Filtration of the Solution of Chloride of Gold and Preparation for Use . Cold Electro-Gilding Baths; Bath with Fulminate of Gold Bath proposed by Ebermeyer; Vessels in which these Baths are kept; Treatment of the Deposit of Gold when Dull and Gray; Use of an Anode of Gold with this Bath; Ebermeyer's Experiments to deter- mine the quantity of Gold precipitated upon the Cathode General Remarks upon the Preparation of the Bath Gilding of Britannia Metal, German-Silver, etc., as practised by this Influence of the Temperature at which the Bath is worked on the Red Gilding; Pink Gilding Various Methods of obtaining the different shades of Pink PAGE Baths of Fizeau, Spencer, and Jacoby; Hansen's patented Process for Electro-Gilding, Plating, or Coppering upon Glass or Porcelain. |