Great facts : a popular history and description of the most remarkable inventions during the present century (1860)
Bakewell, Frederick C. (Frederick Collier), 1800-1869 · New York, D. Appleton and company · leaf 221
nstrument, which is a flat cylinder madeof sheet iron, is indicated by the letters c^ c. Insideit there revolves another cylinder, made also of thinsheet iron, and divided into four compartments,marked d^ d^ d^ d. This interior cylinder readily re-volves on an axis, ^, ^, shown in the section of… … diagram, also, there is shown a cog-wheel. A, fixed onto the axis, and a small outer case, in which thatwheel rotates. Water is poured into that externalcase until the gas-meter is rather more than halffilled, the level of the water being shown at i. The action of the instrument will be readily un-…
Inventions
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