Amateur mechanics ... a book for old and young who like to make things .. (1907)
Popular mechanics magazine, Chicago. [from old catalog] · Chicago, Popular mechanics · leaf 93
ch shows how to suspend the ar-ticles in the plating bath. If accumulatorsare used, which is advised, be sure to con-nect the positive (or red) terminal to thepiece of silver hanging in tbe bath, and thenegative (or black) terminal to the articleto be plated. Where Bunsen cells are used,the carbon… … Simple Current Reversing Switch percha (Fig. 1); also provide them with ahandle. Saw out a rectangular block aboutone and one-half times as long as the brassstrips and fasten to it at each end twoforked pieces of copper or brass, as in Fig.2. Fasten on the switch lever as at A andB, Fig. 2, so that…
Handicraft · Amusements
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