London : Longman, Rees, Orme, Brown, Green, and Longman · leaf 375
yondthe exterior of the appara-tus ; the register turns uponthe axis ?/, being moved bythe rod or wire u: ^ is aniron rod ; the lower end being screwed, and turning towards theleft, in a female screw of brass (/y) affixed to the bottom of aleaden tube, at the upper part of which is a short square… … by the Circulation of Hot Wata\ %^Z
Architecture
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-121-38.webp)
