. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. connected by a rod B D of the same length as A B itself, with a. smaller crank C D about two-thirds or one-half the size of A B; C D revolves about C, and the distance A C = C D. For every revolution of A B, C D will revolve twice. It is rather difficult to shew this by diagrams, but if the reader will exercise his ingenuity in tracing the motion by the successive posi- tions of the two cranks represented in the above figures, he will see the truth of the statement. The same
. The Civil engineer and architect's journal, scientific and railway gazette. Architecture; Civil engineering; Science. connected by a rod B D of the same length as A B itself, with a. smaller crank C D about two-thirds or one-half the size of A B; C D revolves about C, and the distance A C = C D. For every revolution of A B, C D will revolve twice. It is rather difficult to shew this by diagrams, but if the reader will exercise his ingenuity in tracing the motion by the successive posi- tions of the two cranks represented in the above figures, he will see the truth of the statement. The same letters mean the same things in all five figures, and the cranks are supposed to move in the same direction as the hands of a clock do. In fig. 7 A B is just past its highest position and begins to descend ; CD begins to descend also. (When A B is in the dotted line A i, C D lies along C A.) In fig. 8, A B is still descending; C D is also descending, till it reachfs its lowest position C, (/, alter which it rises—A, B, however continues its descent. In fig. 9, A B is now almost at its lowest position, and C D has risen almost to its highest again. When A B is actually at the lowest point, C D will have completed one revolution for the half revolution uf Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original London : [William Laxton]
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Keywords: ., boo, bookcentury1800, booksubjectarchitecture, booksubjectscience
