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Digital Collections

Charts, diagrams, etc, Records (Documents)

Patent for Hydrogen Tube

  • 1949-Mar-08

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Public Domain

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Patent #2,463,743 for a hydrogen tube designed by H. Howard Cary and Warren Baxter during their time at National Technical Labs, a precursor to Beckman Instruments. This tube was designed for use in UV spectrophotometers to provide a consistent source of ultraviolet radiation. It improved on previous designs by being smaller, but avoiding the problems with decreased tube life that usually accompanied a decrease in size.

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Extent
  • 7.75 in. W x 11.25 in. L
Language
Subject
Rights Public Domain Mark 1.0
Credit line
  • Courtesy of Science History Institute

Institutional location

Department
Collection
Series arrangement
  • Sub-series 3. Product Files
  • Series II. Business Activities Files
Physical container
  • Box 19, Folder 22

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Related Items

Cite as

Cary, H. Howard (Henry Howard), and Warren P. Baxter. “Patent for Hydrogen Tube,” March 8, 1949. Beckman Historical Collection, Box 19, Folder 22. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/br86b4380.

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The Science History Institute recognizes there are materials in our collections that may be offensive or harmful, containing racist, sexist, Eurocentric, ableist, or homophobic language or depictions. The history of science is not exempt from beliefs or practices harmful to traditionally marginalized groups. The Institute is engaged in ongoing efforts to responsibly present and address the evidence of oppression and injustice inextricable from the history of science. If you would like to learn more about our ongoing efforts or if you encounter harmful, inaccurate, or insufficient descriptions, please contact us at digital@sciencehistory.org.