4 Matching Results

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Weevil-Exterminator (open access)

Weevil-Exterminator

Patent for a new and useful improvement in weevil exterminators that provides a comparatively simple and effective apparatus for removing boll weevils from cotton plants. It also removes the injured or affect leaves and fruit that have been attacked by the boll weevil so that further injury to the plants may be prevented, and at the same time gather from the ground at the roots of the rows of cotton plants the leaves and rubbish detached from the plants.
Date: December 13, 1921
Creator: Roe, Charles C.
System: The Portal to Texas History
Mortising Machine. (open access)

Mortising Machine.

Patent for a new mortising-machine attachment for lathes or boring mills, designed to securely attach a bracket, hollow chisel, and boring bit to the machine, allowing for adjustable positioning to match the machine's work support.
Date: October 25, 1921
Creator: Andrews, Alluwee C.
System: The Portal to Texas History
Cycle-Car (open access)

Cycle-Car

Patent for a cycle car that can be steered and propelled by hands only and can be used with ordinary bicycles.
Date: November 29, 1921
Creator: {Payne, Luther M.}; {Miller, Lee A.} & {Douglas, John J.}
System: The Portal to Texas History
Internal Combustion Engine (open access)

Internal Combustion Engine

Patent for a improved Internal Combustion Engine. The improvement is the construction of the ignition of the internal combustion engine where the fuel in the compression chamber is ignited explosion of a different fuel of a more highly explosive nature.
Date: August 9, 1921
Creator: Simpson, Joseph Ryan.
System: The Portal to Texas History