| 摘要 |
A flexible, hose-like elongated collector adapted for collecting hydrophobic materials floating in a layer on the liquid in a reservoir of water or the like is formed into an endless loop which passes into or upon the liquid in the reservoir, then upwardly and out through or away from the layer of hydrophobic material which collects on the surface of the collector, after which a doctor blade means scrapes the coated material therefrom. The present improvement provides a transfer roll over which the collector passes during its travel away from the reservoir and toward the drive wheel which pulls it over the transfer roll or wheel and drives the collector again downwardly toward the reservoir. This transfer roll furnishes a large radius fair lead for the tube so that sharp bends in the tube are avoided. It also prevents twisting and tangling of the up-coming loaded tube with the downwardly traveling scraped or clean tube. The apparatus also confines the collector tube so that various scrapers can be utilized to give a cleaner tube and to give a longer scraper life.
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