The practical draughtsman's book of industrial design, and machinist's and engineer's drawing companion: forming a complete course of mechanical, engineering, and architectural drawing (1854)
Armengaud, aîné (Jacques-Eugène), 1810-1891, Armengaud, Charles A., 1813-1893, Amouroux, Jules, Cory, William Johnson, 1823-1892 · New York, Stringer & Townsend · leaf 264
ivided BOOK OF INDUSTRIAL DESIGN. 105 into a series of infinitely short lengths, he proposed to take a moreobtuse cone for each larger portion, and in such progression, thatit would require equal pressure for every portion of the surface tocause a uniform sinking of the plug in the course of wear.… … Fig. 3. hence the use of the simple instrument illustrated by fig. 2. Thiscontrivance consists merely of a straight brass wire, a, jointed atone end by a pin to the upper surface of a small wooden slider, B,which is hollowed in the centre to receive the tip of the finger indrawing a curve. A small…
Decorative arts · Drawing
Internet Archive · Clark Art Institute Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-709-459.webp)
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