Electric Arc Lamp.

Description

Patent for a new and improved electric-arc lamp. This design is "for utilizing a part of the magnetic field of the electro-magnet to act as a retarding medium or a brake to the carbon-holder, which consists of a system of gear-wheels provided with a ratchet and pawl . . . actuated from rack-teeth cut in the side of the upper-carbon rod, on the last spindle of which is adjustably secured a disk of soft iron or other magnetic material, so located as to be within the influence of the magnetic field of one end of the electro-magnet" (lines 36-47).

Physical Description

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

Creation Information

Crowdus, Walter A. & Sutton, Henry M. March 29, 1887.

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Description

Patent for a new and improved electric-arc lamp. This design is "for utilizing a part of the magnetic field of the electro-magnet to act as a retarding medium or a brake to the carbon-holder, which consists of a system of gear-wheels provided with a ratchet and pawl . . . actuated from rack-teeth cut in the side of the upper-carbon rod, on the last spindle of which is adjustably secured a disk of soft iron or other magnetic material, so located as to be within the influence of the magnetic field of one end of the electro-magnet" (lines 36-47).

Physical Description

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

Notes

"SPECIFICATION forming part of Letters Patent No. 360,377, dated March 29, 1887. Application filed October 1, 1886. Serial No. 215,059. (No model.)"

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  • 215060

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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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References : 215060

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Creation Date

  • March 29, 1887

Accepted Date

  • March 29, 1887

Submitted Date

  • October 1, 1886

Added to The The Portal to Texas History

  • Aug. 4, 2011, 5:55 p.m.

Description Last Updated

  • Oct. 26, 2015, 9:31 p.m.

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Crowdus, Walter A. & Sutton, Henry M. Electric Arc Lamp., patent, March 29, 1887; [Washington D.C.]. (texashistory.unt.edu/ark:/67531/metapth171494/: accessed November 17, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; crediting UNT Libraries Government Documents Department.