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 310
er upon which it isplaced. In ordinary instruments the legs, O and P, ter-minate in simple points, which are respectively causedto traverse the grooves in the guide-plate, Q, in describ- ing the ellipse. It is, however, found to be almost impossible to obtain a smooth action with this arrangement,… … Fig. 30. an uneven outline. In the instrument represented in figs. 29 and30, the parts which traverse the guide-grooves in the plate, Q, con-sist of small steel wheels, o, p, carried in the forked ends of the * See page 17. steel spindles, o, p, which are entered loose into the socket legs,o, P.…
Decorative arts · Drawing
Internet Archive · Clark Art Institute Library · Public Domain Mark 1.0. Free to use for anything.
