Resource Type

Cistern-Cleaner (open access)

Cistern-Cleaner

Patent for a device to be used for cleaning mud and sediment from cisterns while preventing contamination of the water within the cistern.
Date: May 7, 1918
Creator: Davis, Lewis F.
System: The Portal to Texas History
Cultivator Attachment (open access)

Cultivator Attachment

Patent for a cultivator attachment designed to aid in the plowing of soil. Illustrations included.
Date: March 7, 1911
Creator: Parmer, George W. & Miller, John W.
System: The Portal to Texas History