The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 44
tric ring, through which the lever T and Q,works the piston rod of the adjoining machine. The levers R and S, and T and Q, can work on a fixed shaft P, bymeans of loose bushes, or the shaft P has to be divided in two, andthen the levers can be keyed or forged on the shaft.We are, Sir, Your obedient…
Architecture · Civil engineering · Science
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