Historical Statement of the Improvements Made in the Duty Performed by the Steam Engines in Cornwall: From the Commencement of the Publication of the Monthly Reports : Compiled at the Request of the British Association for the Improvement of ScienceSimpkin, Marshall, and Company, 1839 - 152 ページ |
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16 inch pump 70 inches 9 feet 9 ft 9 inches aver average duty Binner Downs Boulton and Watt's bushel of coal coal in bushels coal in Length Consolidated Mines Continued Cornwall cylinder December Diameter discharging therein ditto Dolcoath Drawing from 110 East Crinnes engines reported fathoms feet 6 inches feet 9 feet stroke foot high Fowey Consols gallons per minute galls Grose Hocking & Loam Hocking and Loam inches stroke January February March June Lanescot lifted one foot Load in pounds Load in strokes Load per Consump Load per ENGINES low the adit Marazion millions Months Number ENGINES number of engines Number of Length Number of strokes piston Poldice Polgooth Pounds lifted Shammal Sims's single square inch square tion steam engine strokes per minute strokes REMARKS suming a bushel TABLE II.-Continued therein the water tion of coal tion of Number Total TRESKERBY United Mines WHEAL ALFRED Wheal Tolgus Woolf