The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . the oxygen that forms a part of the steam. This isthe principle that makes water-gas possible. Either an-thracite coal or coke may be used to secure the necessarycarbon. There are a number of recently perfected processes in usefor making a rich gas economically, and a description ofthe Rose-Hastings process will serve as well as any other,for they are much alike. This is a combination processfor making coal-gas, water-gas, and oil-gas at the same ILL UMIXA TING GAS. 287 time, and secur
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . the oxygen that forms a part of the steam. This isthe principle that makes water-gas possible. Either an-thracite coal or coke may be used to secure the necessarycarbon. There are a number of recently perfected processes in usefor making a rich gas economically, and a description ofthe Rose-Hastings process will serve as well as any other,for they are much alike. This is a combination processfor making coal-gas, water-gas, and oil-gas at the same ILL UMIXA TING GAS. 287 time, and securing the benefits ot a desirable is much used in connection with natural-gas i)lants,which have a bad habit of giving out as the thermometerapproaches zero, hence require to be supplemented by asystem of manufactured gas. This apparatus consists ofone or more heating chambers or retorts, used for the distil-lation of soft coal into gas ; also chambers for coke, carbu- FiG. 70. ChAMBtR ClftMBtR HHor fliR CiflMBiRG. Gns Fixing CmambebR THERnni Storage 5. 5uPCRME«TfB. ^ T-=r M, j T1 :iJ ..a THE ROSE-HAsTINGS COAL-GAS APPAKATLS. retting, gas-fixing, and steaming, all arranged in a circle;and a central chamber for distributing hot air—the wholeset of chambers being enclosed in a great steel shell, asshown in the illustration. The sections for soft coal andcoke are arched midway of their height with perforated di-visions, the chambers above the arches being respectively for 288 WONDERS OF MODERN MECHANISM. storing heat and for carburetting, the latter being the processof impregnating the gas with carbon to increase its ilhimi-nating power. The heat-storing and earburetting chamberscommunicate near the top, and the coke and gas-fixing sec-tions near the bottom. The chambers using coal havemechanical feeders by which the coal can be supplied atany time. Tlie coke chamber may be charged once ortwice a day through the doors. The coke and coal b
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