Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 304
COINING MACHINE. 301 hours, and when all things work well, an oven must he heated and discharged in 2-1 hours. This, how-ever, depends very much on the quantity of coal which is charged. A high stratum requires a disprc-portionally longer time for charring than a low one ; when, therefore, the… … The discharging or drawing of the coke ought to be done while the oven is red hot. It must be donequickly, so as not to lose too much by combustion, and also not to cool the oven, in order that fresh coalmay inflame at once when it is charged. The door is opened, but the cast-iron plate which shuts…
Mechanical engineering · Mechanics · Engineering
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