Front Case for Proximity Fuse


A label on this nosecone reads “Front case for proximity fuze / 1948 / Shaw Insulator Co. / Made of Kel-F.” Kel-F is a polychlorotrifluoroethylene, a thermoplastic material discovered in Germany in 1934, and commercialized after World War II. The name Kel-F derived from “Kellogg” and “fluoropolymer.”

The Shaw Insulator Co. was established in New Jersey in the early 20th century, to manufacture Bakelite and other plastic insulators. In 1940, after developing machinery for manufacturing plastic containers for milk and other liquids, this firm was purchased by the Plax Corp. In 1943, Frank Henry Shaw received the John Wesley Hyatt award for outstanding achievement in the plastics industry, for his work in the development of transfer molding.

J. Harry Dubois, who became vice president of the Shaw Insulator Co. in 1944, donated this nosecone to the Smithsonian.

Date Made: 1950-1955early 1950s

Maker: Plax Corporation

Location: Currently not on view

See more items in: Medicine and Science: Chemistry


Exhibition Location:

Credit Line: Gift of J. Harry DuBois

Data Source: National Museum of American History

Id Number: 1983.0538.05Catalog Number: 1983.0538.05Accession Number: 1983.0538

Object Name: Front Case for Proximity Fuze

Measurements: overall: 98 mm x 60 mm; 3 7/8 in x 2 3/8 inoverall: 4 in x 7 1/2 in; 10.16 cm x 19.05 cm


Record Id: nmah_627

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.