Practical engineering drawing and third angle projection, for students in scientific, technical and manual training schools and for ... draughtsmen .. (1897)
Willson, Frederick Newton, 1855-1939 · Princeton, N.J., The author · leaf 77
ig. 113) and with a centre a, a short distance from R on Q R, obtaining 6 which is then joinedwith a. On a b a centre c is similarly taken, whence c d is obtained. A sufficient repetition ofthis process will indicate the curve by its enveloping tangents; or a curve may actually be drawntangent to… … ^ig-. ll-i. The area between the completed branch R P S and the hnes Q R and Q S would be equal toa quadrant of the circle on radius Q R. M S =^R 203. The surface generated by revolving the trac- trix about its asymptote has been employed for thefoot of a vertical spindle or shaft and is known…
Mechanical drawing · Lettering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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