Spraying Device

Author:  Hoevel, H. F.
Source:  US Patent 1,605,730
Doc ID:  1926000
Year of Publication:  1926
Abstract:  
This present invention relates to devices for spraying or projecting sand or other material against articles to be treated with such material. Primarily, the invention is intended for use in connection with apparatus in which sand or some other fine hard substance is thrown against a surface to be cleaned. When the article to be treated is of intricate shape (for instance bathtubs, automobile bodies, stove castings, etc.), its successful treatment requires the provision of a plurality of nozzles and in the present invention improved results are obtained by a novel arrangement of nozzles having movements of different character.