Wool replaces rubber. Wool felt, a proven substitute for rubber in washers and gaskets for machinery, may be "tailored" as shown above to meet tolerances of a few thousands of an inch for a variety of sizes and shapes. Physical properties such as resiliency, tensile strength, etc., are "made to order" during the processing stage
Summary
Public domain photograph of indoor, interior activity, America in the 1930s, free to use, no copyright restrictions image - Picryl description
Tags
Date
01/01/1943
Contributors
Smith, Roger, photographer
United States. Office of War Information.
Location
Source
Library of Congress
Copyright info
Public Domain