Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 65
n is to be laid down is drawn horizontally at a certain rate. It, for instance, we were desirousof recording how the pressure varies with the time, the paper must be drawn uniformly, by connectingit with clock-work, or some other apparatus for giving a uniform motion. But this, however, is… … lows: the paper is wrapped round a cylindrical barrel C, which is brought back against a stop by aBtrong watch-spring contained in the box EF. A string passes round the pulley D, and is led awaythrough a fair leader G to some part of the engine having a similar motion to the piston cross-head,…
Mechanical engineering
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