Collection
Serial/Series Title
NACA Technical Memorandums
47
NACA Technical Notes
26
Farmers' bulletin (United States. Department of Agriculture)
12
United States Bureau of Mines Reports
9
NACA Aircraft Circulars
7
NACA Technical Reports
5
Farmers' bulletin (United States. Dept. of Agriculture)
4
Report of investigations (United States. Bureau of Mines)
4
Bulletin (United States. Bureau of Mines)
2
Bulletin (Texas. Department of Agriculture)
1
9 More
Country
194 Matching Results
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194
Bailer.
Patent for improved bailer for deep wells (e.g., oil wells), cheaper to use and manufacture, with a better delivery gate and improved method for triggering gate closure upon bailer withdrawal.
Date:
July 26, 1921
Creator:
Swartz, Ira
Object Type:
Patent
System:
The Portal to Texas History
Laboratory Studies of the Trent Process
Report issued by the U.S. Bureau of Mines detailing the laboratory-scale tests of the efficiency of the Trent process in cleaning coal, in which powdered coal, water, and oil is agitated or beaten together to remove impurities. The report includes details in tables detailing the efficiency varying the type and amounts of coal, oil, and water on the process.
Date:
July 1921
Creator:
Perrott, G. St. John & Kinney, Selwyne Perez
Object Type:
Report
System:
The UNT Digital Library