Patent for "means for guiding pivoted propeller-blades so that they can open and close readily and uniformly. It also consists in a new mode of applying a spring there-to so that the obliquity or resistance of the blades will be automatically graduated." (Lines 6-11) Includes instructions and illustrations.
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Titles
Main Title:
Improvement in Scew-Propellers.
Added Title:
Screw-Propellers.
Description
Patent for "means for guiding pivoted propeller-blades so that they can open and close readily and uniformly. It also consists in a new mode of applying a spring there-to so that the obliquity or resistance of the blades will be automatically graduated." (Lines 6-11) Includes instructions and illustrations.
Physical Description
[1], 2 p. : ill. ; 23 cm.
Notes
Specification forming part of Letters Patent No. 136,015, dated February 18, 1873.
Wilson, Martin M.Improvement in Scew-Propellers.,
patent,
February 18, 1873;
[Washington D.C.].
(https://texashistory.unt.edu/ark:/67531/metapth166829/:
accessed June 5, 2024),
University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu;
crediting UNT Libraries Government Documents Department.