Resource Type

Insect-Trapping Attachment for Cultivators. (open access)

Insect-Trapping Attachment for Cultivators.

Patent for "new and useful improvement in insect-trapping attachments for cultivators" (lines 5-7) including illustrations.
Date: March 28, 1916
Creator: Etheredge, John H.
System: The Portal to Texas History
Equilibrium-Retaining Device for Flying-Machines. (open access)

Equilibrium-Retaining Device for Flying-Machines.

Patent related to automatic means for maintaining equilibrium while operating heavier-than-air flying machines through the use of valves.
Date: November 28, 1911
Creator: Macmanus, Augustus Frederick Watson
System: The Portal to Texas History