The Practical Mechanic Comprising a Clear Exposition of the Principles And Pra
The Practical Mechanic Comprising a Clear Exposition of the Principles And Pra
J a Drake
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8'^ In. 5 Feet, ft. 1 at I and 12 at 5 5-16 2 5 3^ i at I and 14 at 2 1 at f and 6 at 5-16 3. 1 31 6 18 2 H 2' 5 ^ ft. 7 Feet. 14 at 55-161 2 5 ^ 1 at fand 14 a t 5-16 2 2 3^ 1 at land 6 at 5-16 1 Sh 21-161 U 5-1 2 6 8^ 18 ^ ft. Iug. 2 at I and 10 at 5-16 2 3 3i 2 at I and 10 at 5-16 2 3 3} 2 at I and 8 at 5-1 6 4 8 20 2} n 21 91 4 Table showing tho Approximate of Useful Effect of an Ordinai'y Locomotive Engine at different Velo- cities. Load in Tons. Miles per hour. Miles pT hour. Load in Tons.... 25 30. 90 10 250 50 25. 15 12^ 184 75 22. 54 15 138 100 18. 18 17^ 106 125 15. 98 20 83 150 14. 29 221 65 175 13. 28 25 50 200 11. 20 27^ 38 225 10. 77 30 28 The increased resistance to traction on ascending inclined planes is as the increased gravity of the load, caused by the in- clination of the plane ; or as the length of the plane to the per- pendicular height. Hence, divide 2, 240 (or the niiraber of lbs. In a ton) by the inclination of the plane to 1 or unity, to the quo- tient of which add 9, and the sum equals the total resistance, in lbs.
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