Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 114
Roots Double-piston Square Engine. tangiilar frame working horizontally within a box of similar form, andis marked E. The smaller, marked F, works vertically within E.Through the centre of F passes the crank pin, which is carried around … Fig. 22. Fiff. 23. in a circle by the simultaneous action of both pistons. The smaller pis-ton is shown separately in Fig. 24, and the crank in Fig. 25. Fig. 23 rep-resents a plate which closes the steam-box or cylinder, Fig. 21, the sur-face presented being that which is external when the plate is…
Machinery · Scientific apparatus and instruments
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer02inte-349-196.webp)
