Vacuum Cleaning Systems : a Treatise On the Principles And Practice of Mechanical Cleaning
Vacuum Cleaning Systems : a Treatise On the Principles And Practice of Mechanical Cleaning
Cooley, M. S. (Maxwell Stephens), B. 1874
The book Vacuum Cleaning Systems : a Treatise On the Principles And Practice of Mechanical Cleaning was written by author Cooley, M. S. (Maxwell Stephens), B. 1874 Here you can read free online of Vacuum Cleaning Systems : a Treatise On the Principles And Practice of Mechanical Cleaning book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Vacuum Cleaning Systems : a Treatise On the Principles And Practice of Mechanical Cleaning a good or bad book?
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The first attempt to produce a light-weight hose for use with vacuum cleaning systems was by covering a spiral steel tape with canvas. The air leakage through this hose was found to be so high that its use resulted in loss of efficiency of the cleaning plant and it was found necessary to line the hose with rubber. This rubber-lined hose is made in larger sizes than formerly used and 2-in. diameter hose weighs approximately 14 oz. per lineal foot. It is also much more flexible than the 1-in. hos...e formerly used. The introduction of this type made it possible to use larger Digitized by Google 82 VACUUM CLEANING SYSTEMS hose in connection with vacuum cleaning systems and permitted the use of a lower vacuum at the separators, with the same results at the carpet renovator, and a larger quantity of air when using the brushes and other renovators. Without this type of hose the low-vacuum, large-volume systems would be impractical. Another type of hose has been recently introduced in which a wire is woven into the fabric of the hose and the rubber lining vulcanized into place as already described.
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