Production. Milling machines and machine castings. Foundrymen make sculptures in sand more exact then many a work of art. Shown here is a rollover machine for small work. The pattern (left) is first placed face up, and the flask (iron cast on conveyor) placed over it. Special sand is tightly rammed into the flask; then this machine inverts the assembly and withdraws the pattern as shown, leaving a perfect mold. Location: a large Midwest machine tool plant
Summary
Public domain photograph of 1930s-1940s industrial development, no copyright restrictions image - Picryl description
Tags
Date
01/01/1942
Contributors
Palmer, Alfred T., photographer
United States. Office for Emergency Management.
Location
Source
Library of Congress
Copyright info
Public Domain