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 84
A small bind-ing-post is fastened at the end of thestrip. Having fixed the lead plate in posi-tion, next get a piece of glass tubehaving a bore of about 1/32 of an inchin diameter. A piece of an old ther-mometer tube will serve this purpose.Insert this tube in the hole in thestopper farthest from… … can be easily moved. In the hole near-est the lead plate insert a small glassfunnel. The interrupter as it is when com-plete is shown at D, Fig. 1. Havingfinished the interrupter, connect it withthe electric light circuit as shown inPig. 2. Fill the bottle with water toabout the line as shown in D,…
Handicraft · Amusements
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