Ripper, William, 1853-1937 · London, New York [etc.] : Longmans, Green and co. · leaf 85
Fig. 64.It will be best understood by reference to the following figures 68 STEAM-ENGINE THEORY AND PRACTICE. Ill Fig. 65, let ah be the travel of the slide-valve, Oa the crankposition, and OE the position of the centre line of the eccentric, … ad-per- FiG. 65 having angularvance B. Then apendicular, Ec, on a&gives Oc, the distanceo^ the valve from itsmid-position. If thecrank-shaft move roundon its centre so that apasses to a^ and E toEl, and Oc is the dis-tance of the A^alve fromits mid - position foreccentiic position OEj.Instead…
Steam-engines
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-238-148.webp)
