Shoe-Sewing-Machine Attachment. (open access)

Shoe-Sewing-Machine Attachment.

Patent for sole channel cutting for shoe sole sewing machines in which "the sole will be channeled for the insetting of the stiches, the channel being continuous and the cutting thereof is had when the show is at a standstill." (lines 15-20)
Date: May 25, 1920
Creator: Malmberg, Anders G.
Object Type: Patent
System: The Portal to Texas History
Rudder-Bar for Aeroplanes. (open access)

Rudder-Bar for Aeroplanes.

Patent for improvement in aeroplanes, especially to the steering mechanism which allows for the rudder to be locked in position so the aviator can remove their feet from the steering bar.
Date: May 25, 1920
Creator: McMullen, William H.
Object Type: Patent
System: The Portal to Texas History
Rotary Drilling-Machine (open access)

Rotary Drilling-Machine

Patent for rotary well drilling platform improvements. The improvements are to control how the turntable moves without having to change the structure of the platform or having a second person watching while drilling.
Date: May 25, 1920
Creator: Black, Lee Jackson
Object Type: Patent
System: The Portal to Texas History
Oil Burner. (open access)

Oil Burner.

Patent for a new oil burner which is designed to burn oil for fuel has a flared nozzle and can be cheaply made and repaired.
Date: July 25, 1922
Creator: Decuir, Joseph O.
Object Type: Patent
System: The Portal to Texas History
Overalls. (open access)

Overalls.

Patent for a type of overalls where the jumper is elevated from the seat. The jumper is elevated from the jumper to prevent rain and other substances from saturating the seat. The jumper can also be removed from the seat by unfastening a concealed button hole band.
Date: May 25, 1920
Creator: Godchaux, Herbert
Object Type: Patent
System: The Portal to Texas History
Design for a Military Uniform. (open access)

Design for a Military Uniform.

Patent for a new, original, and ornamental design for a military uniform.
Date: October 25, 1921
Creator: Meacham, Haskell K.
Object Type: Patent
System: The Portal to Texas History
Cotton-Picking Device (open access)

Cotton-Picking Device

Patent for cotton-picking device. The object of the invention is to provide a novel and improved device for picking cotton by hand. Patent is for the protection of the digits.
Date: January 25, 1921
Creator: Vincent, George Hilliard
Object Type: Patent
System: The Portal to Texas History
Endurance Tests of Tires (open access)

Endurance Tests of Tires

Technical paper issued by the Bureau of Standards over studies conducted on the endurance of tires. 230 tires of 36 different brands were tested during the studies. The results of the studies are presented and discussed. This paper includes tables, and photographs.
Date: May 25, 1926
Creator: Holt, W. L. & Wormeley, P. L.
Object Type: Report
System: The UNT Digital Library
Working Charts for the Selection of Aluminum Alloy Propellers of a Standard Form to Operate With Various Aircraft Engines and Bodies (open access)

Working Charts for the Selection of Aluminum Alloy Propellers of a Standard Form to Operate With Various Aircraft Engines and Bodies

"Working charts are given for the convenient selection of aluminum alloy propellers of a standard form, to operate in connection with six different engine-fuselage combinations. The charts have been prepared from full-scale test data obtained in the 20-foot propeller research tunnel of the National Advisory Committee for Aeronautics. An example is also given showing the use of the charts" (p. 3).
Date: March 25, 1929
Creator: Weick, Fred E.
Object Type: Report
System: The UNT Digital Library
The relative performance obtained with several methods of control of an overcompressed engine using gasoline (open access)

The relative performance obtained with several methods of control of an overcompressed engine using gasoline

"This report presents some results obtained during an investigation to determine the relative characteristics for several methods of control of an overcompressed engine using gasoline and operating under sea-level conditions. For this work, a special single cylinder test engine, 5-inch bore by 7-inch stroke, and designed for ready adjustment of compression ratio, valve timing and valve lift while running, was used. This engine has been fully described in NACA-TR-250. Tests were made at an engine speed of 1,400 R. P. M. for compression ratios ranging from 4.0 to 7.6" (p. 329).
Date: February 25, 1927
Creator: Gardiner, Arthur W. & Whedon, William E.
Object Type: Report
System: The UNT Digital Library
The N.A.C.A. photographic apparatus for studying fuel sprays from oil engine injection valves and test results from several researches (open access)

The N.A.C.A. photographic apparatus for studying fuel sprays from oil engine injection valves and test results from several researches

"Apparatus for recording photographically the start, growth, and cut-off of oil sprays from injection valves has been developed at the Langley Memorial Aeronautical Laboratory. The apparatus consists of a high-tension transformer by means of which a bank of condensers is charged to a high voltage. The controlled discharge of these condensers in sequence, at a rate of several thousand per second, produces electric sparks of sufficient intensity to illuminate the moving spray for photographing. The sprays are injected from various types of valves into a chamber containing gases at pressures up to 600 pounds per square inch" (p. 361).
Date: May 25, 1927
Creator: Beardsley, Edward G.
Object Type: Report
System: The UNT Digital Library
The Gaseous Explosive Reaction: A Study of the Kinetics of Composite Fuels (open access)

The Gaseous Explosive Reaction: A Study of the Kinetics of Composite Fuels

"This report deals with the results of a series of studies of the kinetics of gaseous explosive reactions where the fuel under observation, instead of being a simple gas, is a known mixture of simple gases. In the practical application of the gaseous explosive reaction as a source of power in the gas engine, the fuels employed are composite, with characteristics that are apt to be due to the characteristics of their components and hence may be somewhat complex" (p. 503).
Date: April 25, 1928
Creator: Stevens, F. W.
Object Type: Report
System: The UNT Digital Library