Appleton's dictionary of machines, mechanics, engine-work, and engineering (1861)
Appleton, firm, publishers, New York. (1852, D. Appleton & Co.) · New York : D. Appleton · leaf 801
a steelmagnet, having its positive and negative poles. Therod plays in the pipe with perfect freedom, having nostuffing-box, valve connection, or packing of any kindabout it; hence there is no friction. The needle on thedial moves on a polished silver pin, and is controlledby the magnet. It will… … Gauge-Cocks. Two or three small cocks fixed in front of the boiler of a steam engine, for the pur-pose of ascertaining the height of the water. Gauge Railway. The distance between the rails; the most common gauge is 4 feet 8J inches; thewidest gauge in this country is the Erie Railroad, (6 feet,)…
Mechanical engineering
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