Journal of the Franklin InstituteVols. 1-69 include more or less complete patent reports of the U. S. Patent Office for years 1825-1859. cf. Index to v. 1-120 of the Journal, p. [415] |
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For mid - gear it occurs in fact at 54 per cent . of the stroke ; and the steam is expanded into 3.1 times the length of stroke at which it is cut off . 5th , That the period of compression , increasing as the admission is reduced ...
For mid - gear it occurs in fact at 54 per cent . of the stroke ; and the steam is expanded into 3.1 times the length of stroke at which it is cut off . 5th , That the period of compression , increasing as the admission is reduced ...
Page 4
... of any other engines with which the writer is acquainted ; and the diagrams prove that the per centages of back exhaust pressure , in terms of the positive mean pressure , at 55 miles per hour , areFor the 1st notch , 8 } per cent .
... of any other engines with which the writer is acquainted ; and the diagrams prove that the per centages of back exhaust pressure , in terms of the positive mean pressure , at 55 miles per hour , areFor the 1st notch , 8 } per cent .
Page 5
per during presallow Ex- ComPer cent presstroke , Comring 1 cflective horse cated . hour . admissure . haust . pression cf ... for 8lb . from stroke . sure . of steam diag'm . water . pressure ed per ing llb . lbs . lbs . per cent .
per during presallow Ex- ComPer cent presstroke , Comring 1 cflective horse cated . hour . admissure . haust . pression cf ... for 8lb . from stroke . sure . of steam diag'm . water . pressure ed per ing llb . lbs . lbs . per cent .
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15 20 24 28 32 40 46 per cent . 10 12.5 15 17.5 20 25 30 35 40 45 50 55 60 65 70 75 100 lb. 16.2 16.7 17.3 17.8 18.4 19.5 20-6 21.7 22.8 23.9 25.0 26.1 27.2 28.3 29.4 30-5 36.0 2.22 2:15 2.08 2.02 1.96 1.85 1.75 1.66 1.58 1.50 1.44 1.38 ...
15 20 24 28 32 40 46 per cent . 10 12.5 15 17.5 20 25 30 35 40 45 50 55 60 65 70 75 100 lb. 16.2 16.7 17.3 17.8 18.4 19.5 20-6 21.7 22.8 23.9 25.0 26.1 27.2 28.3 29.4 30-5 36.0 2.22 2:15 2.08 2.02 1.96 1.85 1.75 1.66 1.58 1.50 1.44 1.38 ...
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1-7th full . per cent . 15 20 24 28 32 40 1-8th . 1-5th . per cent . ... loss by imperfect exhaust causes a large increase of consumption per horse power per hour , of from 33 to 12 per cent . , according to the amount of admission .
1-7th full . per cent . 15 20 24 28 32 40 1-8th . 1-5th . per cent . ... loss by imperfect exhaust causes a large increase of consumption per horse power per hour , of from 33 to 12 per cent . , according to the amount of admission .
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