. Appleton's dictionary of machines, mechanics, engine-work, and engineering. and often dangerous effect of bucketing when the works are stopped, as the small quantit] ^<i 854 WATER-WHEELS. water escaping by the sluice and falling upon the wheel runs through the air-holes without accumula-ting in the buckets of the wheel, and starting it into motion at intervals. Mr. Fairbairn, of Manchester, to whom we owe the present improved system of ventilation, relatesin a paper submitted to the Institution of Civil Engineers, that about twenty years ago he constructeda wheel for Mr. James Brown, of L
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. and often dangerous effect of bucketing when the works are stopped, as the small quantit] ^<i 854 WATER-WHEELS. water escaping by the sluice and falling upon the wheel runs through the air-holes without accumula-ting in the buckets of the wheel, and starting it into motion at intervals. Mr. Fairbairn, of Manchester, to whom we owe the present improved system of ventilation, relatesin a paper submitted to the Institution of Civil Engineers, that about twenty years ago he constructeda wheel for Mr. James Brown, of Linwood, near Paisley, which in floodwaters, when the wheel wasloaded, every bucket acted as a water-blast, and threw the water and spray to a height of six to eightfeet above the orifice at which it entered. This was complained of as a great evil; and in order to getrid of the difficulty, incisions were made through the sole-plates, and small interior buckets wereattached to the inner sole-plates, as represented in Fig. 3781. SThe air made its escape by the openings 3782. a a a into the interior buckets 6 6 6 inside of the wheel during the time of filling; and, when workitigin backwater, it presented the same facilities for its emission before even a partial vacuum could beformed in the ascending bucket when rising through the tailwater. The changes which this remarkablealteration effected can scarcely be credited ; the wheel not only took and parted with the water withperfect freedom, but an increase of power of nearly a fourth was obtained. The wheel is still in thesame state, and continues in all states of the water to perform an apparent and satisfactory amount ofduty. This was an important advance on the scheme of piercing the starts of the buckets; and although inthis case applied to an iron wheel, it admits of easy application to wooden wheels, by making a speciesof internal sole, and dividing it off into portions answering to the small buckets 6 6 6, and of cours
Size: 2538px × 985px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
