Better enlargements from “miniature” negatives
- Publisher
- Elsevier Science
- Year
- 1957
- Tongue
- English
- Weight
- 153 KB
- Volume
- 263
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
mittee of project engineers composed of men assigned by the utility and the several manufacturers. As the work progresses and problems are encountered, this committee is supplemented by other sub-committees experienced in special phases of the work.
Cotton Carpeting Cleaned in Place.
--Rug-cleaning firms who have had difficulties with cotton carpeting can now obtain an answer to some of their problems. A satisfactory method of thoroughly cleaning this type of carpeting on the floor has been developed under supervision of the U. S. Department of Agriculture ; and it is expected that the findings will prove valuable to rug-cleaning firms throughout the country. The method and a special machine for the purpose were developed by the Hoover Company of North Canton, Ohio, under contract with the Southern Utilization Research Branch of the Agricultural Research Service, USDA, the Department's big cotton utilization research center in New Orleans, La.
The new system eliminates the overwetting and browning which caused trouble with ordinary methods, and provides for quick drying and restoration of the pile. Large quantities of fresh suds are applied to the carpet through the center of a rotating brush, the suds worked outward through the carpet pile and then sucked up through a vacuum nozzle surrounding the brush. Thus suds and soil are removed quickly. Silica gel laid over the carpet between layers of cotton batiste then quickly takes up most of the moisture.