STEADS-ENGINES IN CORNWALL.
TO THE EDITOR OF THE SPECTATOR.
Sts,—The annexe.d statement, of duty performed by some of the principal Cornish steam-engines, in drawing water from the mines,.will excite attention, and lead to inquiry, why steam-engines out of the county do not do equal duty. I am not aware uf any publication which dii ects the attention of scientific men to the high state of steam-engines in this county.
Cornwall, 12fh October 1829.
DUTY PERFORMED BY THE FOLLOW/NO STEAM-ENGINES IN CORNWALL, IN DRA WI:s10 WATER FROM MINES—SEPTEMBER 1828.
Youndq lifted
the diameter square in. thestroke ,,,,,,tion of in I , ,,„,,,,ii,„." strokes, Engine, and Load per Length of Con. Number Load , I ft• high b. No. of Cylinder. piston. I pump. I of coals. strokes. Pounds. :bushel Of 1 Per i coals. I n"
of the on the in cylinder'
Inches Lbs. . in. ft. in bushels. Consols . . . Wolf's 80 8 34 ;10 0 7 6 2680 309,270 70,793 61,270,945E7.1;
;ft Ditto Ditto Taylor's 70 9 77 110 . 7 6 1660 262,520 50,119 69,806,635! 6 07 6
Ditto Maria 90 8 82 .10 . 7 6 2174 231,220 74.784 59,061,4150 5 3 Shear's 65 12 45 ! 9 • 7 6 1153 198,48u 49,558 63,982,687. 4 59 Wheal Towan . Wilson's 80 10 4 ;10 . 8 . 1938 263,100 65,866 68,816,035 6 25 Dinner Downs Swans 70 11 18 110 . 7 6 2173 365,880 56,072 65,002,749 7 77 Wheal Tolgus 70 8 28 110 . 7 6 i0.5o 197,800 ,42,507. 68,385,087! 4 42
Cardrew Downs 66 10 4 8 9 7 . 1512 263,480144,500 54,281,759' 6 9 5 2 . a .. 9 . 8 . MO 228,420 3,70
3,1,50,d0,03;) 6 13 6 9 . 7 • .1444 249,220149,550 69,862,8511 5 58- Wheal Hope 60
Wheal Rose o
MINE'.
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