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
ngine though classed bythe jury among the rotaries. Externally it has the appearance of one,rotation seeming to be directly produced without the intervention of anyperceptible reciprocating or crank motion. By examining the interior,this effect is seen to be caused by two pistons rectangular in… … 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
Machinery · Scientific apparatus and instruments
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