Machinists' and draftsmen's handbook, containing tables, rules and formulas, with numerous examples explaining the principles of mathematics and mechanics as applied to the mechanical trades; intended as a reference book for all interested in mechanical work (1910)
Lobben, Peder, 1858- · New York, D. Van Nostrand company · leaf 208
be an arc f1 f. Thepoints where this arc intersects ab are foci. The distance fn isdivided into any number of parts,as 1, 2, 3, 4, 5. With radius 1 to b,and the focus/as center, describe arcs 6 and 61radius and with f1 as center describe arcs 6radius 1 to a and/1 as center, describe arcs… … with the sameand 63. With 190 PROBLEMS IN GEOMETRICAL DRAWING. way marked out, draw the ellipse by using a scroll. It is aproperty with ellipses that the sum of any two lines drawn fromthe foci to any point in the circumference is equal to the largestdiameter. For instance: /1 e +fe, = ab, or/61…
Mechanical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
