Collection
Serial/Series Title
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4 Matching Results
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Device For Cleaning Electrodes Of Make-And-Break Spark-Plugs.
Patent for improvements in cleaning the electrodes of make and break spark plugs, with an illustration and explanation.
Date:
August 6, 1918
Creator:
Irwin, H. G.
Object Type:
Patent
System:
The Portal to Texas History
Cotton-Bur Separator.
Patent for improvements in apparatus for separating burs from cotton lint despite severe weather conditions, illustrations included.
Date:
August 20, 1918
Creator:
Irwin, Samuel D.
Object Type:
Patent
System:
The Portal to Texas History
Evaluating the Ground-Water Resources of the High Plains of Texas: Volume 3
Third volume of a report documenting a study to map the High Plains aquifer and obtain data about various measurements and aspects of the aquifer. This volume provides "supporting basic data including records of wells and county maps depicting well locations, elevation of base of aquifer, elevation of water levels in 1980, and saturated thicknesses in 1980" for the middle third of the study area. It includes tabular data and mapped information.
Date:
August 1984
Creator:
Knowles, Tommy R.; Nordstrom, Philip L. & Klemt, William B.
Object Type:
Report
System:
The Portal to Texas History
Tank-Bottom Holder.
Patent for a tank bottom holder that allows a tank bottom to be "securely and accurately maintained in proper cooperative relation to the edge turning tool and readily manipulated in the required manner" (lines 13-17). That tank bottom holder can be adjusted to fit a variety of tank bottom sizes, and the patent includes illustrations and instructions.
Date:
August 11, 1914
Creator:
Smith, Walter O.
Object Type:
Patent
System:
The Portal to Texas History