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Tractor

Description: Patent for an improved tractor where the "propelling force is delivered through traction blocks...(lines 11-12)."
Date: March 22, 1921
Creator: Aerl, Van Vivian
Partner: UNT Libraries Government Documents Department

Tractor

Description: Patent for improvements in tractors for farm and road work. Improvements include enclosing all working parts within a protecting housing, mounting the motor for rotation, balance the weight, provide a wheel carriage to adjust the width and height, and to provide shifting gears.
Date: April 26, 1921
Creator: Ingram, Joseph D.
Partner: UNT Libraries Government Documents Department

Disk Harrow or Terracer

Description: Patent for a disk harrow or terracer that is more efficient in operation for turning soil with an improved structure and functionality.
Date: October 11, 1921
Creator: Barnes, Jonathan G.
Partner: UNT Libraries Government Documents Department

Rolling Fender

Description: Patent for improvements in rolling fenders. The invention can be attached to an earth working device, such as a cultivator, to prevent clods of dirt being thrown and crushing small plants. Multiple discs will crush the clods and prevent the dirt from sticking to the rolling fender.
Date: May 3, 1921
Creator: Wright, Joseph Hansel
Partner: UNT Libraries Government Documents Department
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