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 Decade: 1910-1919
 Collection: Technical Report Archive and Image Library
The stretching of the fabric and the deformation of the envelope in nonrigid balloons

The stretching of the fabric and the deformation of the envelope in nonrigid balloons

Date: January 1, 1918
Creator: Haas, Rudolf
Description: Report presents the performance of fabrics used for the envelopes of airships.
Contributing Partner: UNT Libraries Government Documents Department
A Study of the Current Transformer with Particular Reference to Iron Loss

A Study of the Current Transformer with Particular Reference to Iron Loss

Date: 1911
Creator: Agnew, P. G.
Description: Report issued by the Bureau of Standards over studies conducted on current transformers. Emphasis is placed on iron loss. The results of the studies are presented and discussed. This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma

Suggestions for Improved Methods of Mining Coal on Indian Lands in Oklahoma

Date: May 1918
Creator: Rutledge, J. J. & Harrington, Daniel
Description: Technical paper issued by the Bureau of Mines over studies of Oklahoma coal mines. As stated in the introduction, "this report describes the systems of mining used, points out their defects, and presents suggestions for improved methods, more especially as regards the applicability of different modifications of the panel system to mining coal in Oklahoma" (p. 5). This paper includes tables, maps, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
The Technology of Marble Quarrying

The Technology of Marble Quarrying

Date: 1916
Creator: Bowles, Oliver
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Technology of Salt Making in the United States

Technology of Salt Making in the United States

Date: November 1917
Creator: Phalen, W. C.
Description: Report discussing technology for the production of salt in the United States and also the more important sources of salt in the United States.
Contributing Partner: UNT Libraries Government Documents Department
Temperature Measurements in Bessemer and Open-Hearth Practice

Temperature Measurements in Bessemer and Open-Hearth Practice

Date: May 8, 1917
Creator: Burgess, George K.
Description: Technical paper issued by the Bureau of Standards over studies conducted on different types of furnaces, specifically the Bessemer and the open-hearth furnace. The results of the studies are presented and discussed. This paper includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Temperature-Viscosity Relations in the Ternary System CaO-Al₂O₃-SiO₂

Temperature-Viscosity Relations in the Ternary System CaO-Al₂O₃-SiO₂

Date: April 1918
Creator: Feild, Alexander L. & Royster, P. H.
Description: Technical paper issued by the Bureau of Mines over studies on the relations of temperature-viscosity. The "observations on the temperature-viscosity relations of silicates" (p. 5) are presented and discussed. This report includes tables, and illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Temperatures in Spark Plugs Having Steel and Brass Shells

Temperatures in Spark Plugs Having Steel and Brass Shells

Date: January 1, 1919
Creator: Cragoe, C S
Description: This investigation was conducted at the Bureau of Standards for the National Advisory Committee for Aeronautics. Brass has often been assumed superior to steel for spark plug shells because of its greater heat conductivity. The measurements described in this report prove the contrary, showing that the interior of a spark plug having a brass shell is from 50 degrees to 150 degrees c. (90 degrees to 270 degrees f.) hotter than that of a similar steel plug. Consistent results were obtained in both an aviation and a truck engine, and under conditions which eliminated all other sources of difference between the plugs. It is to be concluded that steel is to be preferred to brass for spark plug shells. This report embodies the results of measurements taken of electrodes and a comparison of brass and steel insulators of spark plugs while they were in actual operation. The data throw considerable light upon the problem of the proper control of temperatures in these parts.
Contributing Partner: UNT Libraries Government Documents Department
Tests of Coal and Briquets as Fuel for House-Heating Boilers

Tests of Coal and Briquets as Fuel for House-Heating Boilers

Date: 1911
Creator: Randall, D. T.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Tests of Permissible Explosives

Tests of Permissible Explosives

Date: 1913
Creator: Hall, Clarence
Description: None
Contributing Partner: UNT Libraries Government Documents Department