[Download] "Scientific American Supplement, No. 388, June 9, 1883" by Various Authors # eBook PDF Kindle ePub Free
eBook details
- Title: Scientific American Supplement, No. 388, June 9, 1883
- Author : Various Authors
- Release Date : January 01, 2012
- Genre: Antiques & Collectibles,Books,Lifestyle & Home,
- Pages : * pages
- Size : 893 KB
Description
In a preceding article, we have described a ventilator which is in use at the Decazeville coal mines, and which is capable of furnishing, per second, 20 cubic meters of air whose pressure must be able to vary between 30 and 80 millimeters. In order to actuate such an apparatus, it was necessary to have a motor that was possessed of great elasticity, and that nevertheless presented no complications incompatible with the application that was to be made of it.
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