Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 173
distinctly seen in Fig. 2474, are somewhat advanced intsthe space occupied by the wick, a cut being made in the socket, so that they press the wick in somemeasure against the back side. According as the screws are turned the wick is either raised or lowered,and a larger or smaller portion of it is…
Mechanical engineering
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