Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 553
e first class, the ink iscontained in the holder, and is usually carried to the pen by a tube. To force the ink down this tubeis the problem. In some cases a flexible bulb is squeezed by the hand of the writer, and in othersa piston must be pushed down. None of these pens have come into extendei… … PHONOGRAPH. 531 successful. They involve two essential features : 1. An ink-reservoir contained in the handle, throughwhich passes an air-tube open at both ends. The object of this tube is to admit a supply of air intothe ink-reservoir so as to compensate for and allow of the escape of the ink. 2.…
Mechanical engineering -- Dictionaries
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