wound round with wire; at ais a keeper fastened to a lever, a I, which works on a fulcrum, at d; theother end of the lever bears a steel point, s, which serves as a pen. At c is aclock work arrangement for the purpose of drawing a narrow strip of paper,pp, in the direction of the arrows. W W are… … a, to its poles; and the other end of the lever, I, rising up, the point s ispressed against the moving paper and makes a mark. When the leverfirst moves it sets the clock machinery in motion, and the bell, b, rings togive notice to the observer. The movements of the lever a I are thoexact…
Physics
Internet Archive · Western University Libraries · Public Domain Mark 1.0. Free to use for anything.
