Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 112
very thin hammered brass, shown at K. This strip is 2$iinches long. It projects above the tinned strips by % of aninch, and its lower end is cut narrow and bent out as shownat H. If difficulty is experienced in attaching this to the strips, asmall copper rivet driven through both, may help matters.… … 98 EASY ELECTRICAL EXPERIMENTS.CHAPTER XXIX. HOW TO MAKE AN ELECTRIC BELL. PART TWO. Having followed the directions given in the last chapter, thenext thing is to mount the different parts of the bell in theirproper places. For a bell, the amateur may have to dismantlean old alarm clock, the gongs…
Electric apparatus and appliances · Electricity
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