The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 213
A, section from 1 to 2.—B. plan of chair.—C, section from 5 to 6.—D.ditto, locking cheek in its place.—E, ditto, rail.—F, ditto, from 3 to 4.—Gand H, side and end of locking cheek.—K, malleable iron key or wedge.—L.stone blocks, or wood sleepers. Sir—I beg to hand you a sketch of a joint chair with…
Architecture · Civil engineering · Science
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