. How to make and use electricity ... on the object on which it is deposited, while with the latter itis intended to be removed. The processes are, in the main, thesame. 50 HOW TO MAKE AND The articles to be plated are first thoroughly cleaned andsuspended onrthe — pole of a battery, and then a plate of thesame bind of metal that is to be deposited on the given arti-cles is suspended, from the X pole (Fig. 4.) The bath usedis a solution of a salt of the metal to be deposited. The cyan-ides of gold and silver are generally used for gilding and sil-vering. Many of the base metals require to be e
. How to make and use electricity ... on the object on which it is deposited, while with the latter itis intended to be removed. The processes are, in the main, thesame. 50 HOW TO MAKE AND The articles to be plated are first thoroughly cleaned andsuspended onrthe — pole of a battery, and then a plate of thesame bind of metal that is to be deposited on the given arti-cles is suspended, from the X pole (Fig. 4.) The bath usedis a solution of a salt of the metal to be deposited. The cyan-ides of gold and silver are generally used for gilding and sil-vering. Many of the base metals require to be electro-coppered firstin order to secure the adhesion of the gold or silver. The mag-neto-electric machine has almost replaced the voltaic batteryfor electrotyping and electro-plating purposes. For ordinary purposes, however, the Smee battery, which con-sists of two plates of zinc (Fig. 4=), between which is a lead. plate covered with powdered platinum and immersed in asolution of one part of sulphuric acid to nineteen parts of water,is the best. Two cells are required to work properly. All arti-cles that are to be plated must be thoroughly cleaned withacid, and must be free from grease. The word telegraph literally signifies to write far away. Inits broadest sense it embraces all methods of communicatingthoughts with great speed to a distance by means of intelli-gible characters, sounds or signs; but usually it is applied onlyto electrical methods. First, it should be understood that instead of two lines ofwire, one to convey the electric current far away from the bat-tery, and another to return it to the battery, if the distantpole is connected with a large metallic plate buried in moistearth, and the other pole near the battery is connected in a likemanner with the earth, so that the earth forms about one-halfof the circuit, there will be needed only one wire to connect tele-graphically two pl
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectelectricity, bookyear
