Drill-Bit.

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Description

Patent for improvements in drill bit constructions that allows the drill bit to be switched out and the new bit locked in so it is secure.

Physical Description

[1], 2 p. : ill. ; 23 cm.

Creation Information

Midgett, Penelton G. June 22, 1920.

Context

This patent is part of the collection entitled: Texas Patents and was provided by the UNT Libraries Government Documents Department to The Portal to Texas History, a digital repository hosted by the UNT Libraries. More information about this patent can be viewed below.

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  • Thomas, Rosser Assignor of One-Half to Rosser Thomas, of Dallas, Texas.

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Titles

  • Main Title: Drill-Bit.
  • Added Title: Drill Bit.

Description

Patent for improvements in drill bit constructions that allows the drill bit to be switched out and the new bit locked in so it is secure.

Physical Description

[1], 2 p. : ill. ; 23 cm.

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Texas Patents

United States patents filed by Texas inventors before 1900. A majority of the patents are for agricultural and industrial applications.

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Creation Date

  • June 22, 1920

Accepted Date

  • June 22, 1920

Submitted Date

  • September 2, 1919

Added to The Portal to Texas History

  • July 1, 2020, 8:02 a.m.

Description Last Updated

  • April 13, 2024, 9:24 p.m.

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Midgett, Penelton G. Drill-Bit., patent, June 22, 1920; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1256767/: accessed July 5, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.

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