Trombone. (open access)

Trombone.

Patent, including illustration, for "a musical instrument slide and is more particularly designated as a bearing or stocking for a trombone or other similar instruments in which it is desirable to provide a smooth bearing for the slidable part of the instrument" (page 1, lines 9-13).
Date: February 17, 1920
Creator: Ackley, William D.
Object Type: Patent
System: The Portal to Texas History
Nozzle. (open access)

Nozzle.

Patent for a hose nozzle with increased capacity and efficiency. Includes instructions and illustrations.
Date: March 16, 1897
Creator: Adams, Don B.
Object Type: Patent
System: The Portal to Texas History
Broom or Brush (open access)

Broom or Brush

Patent for metal brooms or brushes that are "strong and durable, relatively light in weight, and can be inexpensively manufactured" (line 13-15). It is intended for "sweeping snow, mud, slush, and the like" (line 16-17). The patent can also be applied for smaller version of metal brooms or brushes for other purposes.
Date: March 16, 1915
Creator: Airhart, Noah S.
Object Type: Patent
System: The Portal to Texas History
Bucket Excavator. (open access)

Bucket Excavator.

Patent for "new and useful Improvement in Bucket Excavators, of which the following is a specification. My invention relates to excavators of that kind in which a bucked is arranged to travel back and forth upon a runway which is lowered into the ground and which is adapted to determine the cross sectional outline of the ditch or excavation" (lines 5-13).
Date: November 30, 1915
Creator: Bettis, William I.
Object Type: Patent
System: The Portal to Texas History
Retort Vaporizer and Superheater (open access)

Retort Vaporizer and Superheater

Patent for improvements for vaporizers "of simple and highly efficient means for thoroughly and effectively superheating the vapor of water and oil" (lines 13-15).
Date: March 26, 1889
Creator: Biddison, Stella D.
Object Type: Patent
System: The Portal to Texas History
Paper Separator (open access)

Paper Separator

Patent for a paper separator.
Date: October 24, 1905
Creator: Brintnall, Harry W. & Venney, Felix A.
Object Type: Patent
System: The Portal to Texas History
Summary of Conference on the Toxicity of Carbon 14 Held at Argonne National Laboratory, January 15-16, 1952 (open access)

Summary of Conference on the Toxicity of Carbon 14 Held at Argonne National Laboratory, January 15-16, 1952

Report issued by the Argonne National Laboratory discussing the Conference on the Toxicity of Carbon 14. At the outset of the meeting it was emphasized that the group was brought together to discuss work which had a bearing on the toxicity of C14 compounds used either clinically or industrially, and the hope was expressed that the group might be able to reach some conclusions on these matters. This report includes tables.
Date: March 1952
Creator: Brues, A. M. & Buchanan, D. L.
Object Type: Report
System: The UNT Digital Library
Quarterly Report August 1947 to November 1947, Biology Division (open access)

Quarterly Report August 1947 to November 1947, Biology Division

The following document is a compilation of quarterly reports from August 1946 to November of 1947 from the Biology Division of the University of Chicago.
Date: November 1, 1947
Creator: Brues, Austin M.
Object Type: Report
System: The UNT Digital Library
Asian Carp and the Great Lakes Region (open access)

Asian Carp and the Great Lakes Region

Report describing threats to waterways in the Great Lakes area by invasive carp species. It includes background about the various species, the potential negative impacts and federal responses, as well as litigation, international concerns (regarding Canada), and areas of interest for Congress.
Date: June 25, 2010
Creator: Buck, Eugene H.; Upton, Harold F.; Stern, Charles V. & Nichols, James E.
Object Type: Report
System: The UNT Digital Library
Electromagnetic Ore-Separator. (open access)

Electromagnetic Ore-Separator.

Patent for an electromagnetic ore separator, which reduces the risk of any valuable particles falling with the waste mineral material below the magnetic surface.
Date: February 16, 1909
Creator: Charlton, Thomas
Object Type: Patent
System: The Portal to Texas History
Bottle-Stopper. (open access)

Bottle-Stopper.

Patent for "a bottle-stopper which shall not require any wire, cap or clamp for holding it and which shall by reason of its form and of the materials of which it is composed afford a tight joint or seal under all circumstances." (Lines 13-17) Includes instructions and illustrations.
Date: February 11, 1896
Creator: Davis, Clifton H.
Object Type: Patent
System: The Portal to Texas History
Frame for Jaw Crushers (open access)

Frame for Jaw Crushers

Patent for "new and useful Improvements in frames for Jaw-Crushers (lines 8-9) including illustrations.
Date: March 25, 1919
Creator: Easton, William B. & Cole, David
Object Type: Patent
System: The Portal to Texas History
Keyboard for Writing Machines. (open access)

Keyboard for Writing Machines.

Patent for improved keyboards for writing machines "having its keys so arranged that the fingers of the operator may rest upon the keyboard in an easy and natural manner, the keys being so disposed with relation to each other that the fingers of the operator may reach all of them with the least possible strain or exertion" (lines 16-22). This improvement allows the operator to work at maximum speed and efficiency.
Date: April 17, 1917
Creator: Edwards, Alrah B. & Russell, Frank K.
Object Type: Patent
System: The Portal to Texas History
Writing-Machine. (open access)

Writing-Machine.

Patent for writing-machine mechanism which prolongs the life of the ribbon and provides "means to rotate the platen step by step at each actuation of one or more of the keys" (line 20).
Date: April 24, 1917
Creator: Edwards, Alrah B. & Russell, Frank K.
Object Type: Patent
System: The Portal to Texas History
Gas Masks for Gases Met in Fighting Fires (open access)

Gas Masks for Gases Met in Fighting Fires

Technical paper issued by the Bureau of Mines over the development of gas masks designed for fighting fires. The characteristics of the different types of masks in development are presented. This paper includes tables, illustrations, and photographs.
Date: August 1921
Creator: Fieldner, Arno Carl; Katz, Sidney H. & Kinney, Selwyne P.
Object Type: Report
System: The UNT Digital Library
City Smoke Ordinances and Smoke Abatement (open access)

City Smoke Ordinances and Smoke Abatement

From Introduction: "In connection with the fuel investigations conducted by the Bureau of Mines much information has been accumulated as to the smoke abatement activities in various cities. The essential features of the information are presented in this report, which, it is believed, will be of public interest and benefit, especially to those communities that are just beginning organized effort to abate unnecessary smoke."
Date: 1912
Creator: Flagg, Samuel B.
Object Type: Report
System: The UNT Digital Library
Errata for ANL-6628: Automatic Foil Activity Counting Facility and Data-Reduction Program (open access)

Errata for ANL-6628: Automatic Foil Activity Counting Facility and Data-Reduction Program

Errata sheet listing corrections to three pages of a report that describes a transistorized automatic counting and recording system built for the determination of foil-activation data.
Date: April 8, 1963
Creator: Glassner, Alvin
Object Type: Text
System: The UNT Digital Library
Great Lakes Carbon Corporation Research and Development Division Quarterly Report: January-March 1952 (open access)

Great Lakes Carbon Corporation Research and Development Division Quarterly Report: January-March 1952

The following quarterly report is the third in a series that discusses the investigation on the production of purified graphite through the use of self-purifying raw materials, covering the period of January, February and March of 1952.
Date: 1956
Creator: Great Lakes Carbon Corporation. Research and Development Division.
Object Type: Report
System: The UNT Digital Library
Headlight-Shade. (open access)

Headlight-Shade.

Patent for a headlight shade which can be pulled down to block the high beam headlights of a train or car when there is an oncoming train or car.
Date: July 18, 1911
Creator: Green, John R.
Object Type: Patent
System: The Portal to Texas History
Photographic Copying Apparatus (open access)

Photographic Copying Apparatus

Patent for a simple and effective photographic-copying apparatus capable of making copies of small objects of different sizes. The machine is for general commercial use "that may be successfully operated by persons not particularly skilled in the photographic art" (lines 23-25) including illustrations.
Date: February 2, 1915
Creator: Gregory, Oscar T. & Carkhuff, Norman W.
Object Type: Patent
System: The Portal to Texas History
Strontium Program Quarterly Summary Report: November 1958 - January 1959 (open access)

Strontium Program Quarterly Summary Report: November 1958 - January 1959

From Abstract: "This report is one of a sequence of quarterly reports, each designed to up-date its predecessor beginning with HASL-42, "Environmental Contamination from Weapon Tests." Herein are reported data which have accrued since HASL-51. In particular, the levels of strontium 90 in fallout, milk, tap water, vegetation, and foods are given, based on data available from November 1, 1958 to January 30, 1959."
Date: February 24, 1959
Creator: Hardy, Edward P., Jr. & Klein, Stanley
Object Type: Report
System: The UNT Digital Library
Electrical Battery (open access)

Electrical Battery

Patent for an electrical battery. Illustration included.
Date: June 14, 1904
Creator: Haschke, Juluis E. & Haschke, Feodor G.
Object Type: Patent
System: The Portal to Texas History
Stirling-Engine Thermodynamic Analysis: A Users Guide To SEAM1 (open access)

Stirling-Engine Thermodynamic Analysis: A Users Guide To SEAM1

From Abstract: This report provides background and procedural information for the use of a general-purpose Stirling-engine analysis code developed at Argonne National Laboratory and available through the National Energy Software Center. Different engine configurations are easily specified, or the user may make use of provided data for existing engines, both kinematic and free piston. The code models heat transfer and fluid mechanics throughout the engine and accounts for system energy flows and losses. Good agreement is shown between code predictions and experimental measurements. The present analysis method was chosen for fast execution and useful information on energy flows in the system. A description is provided of the code structure that is intended to accept different analysis modules that can provide improved system modeling or optimization capability.
Date: September 1982
Creator: Heames, T. J.; Uherka, D. J.; Zabel, J. C & Daley, J. C.
Object Type: Report
System: The UNT Digital Library
COUPLING PATENT (open access)

COUPLING PATENT

This patent is for a new coupling system to connect hollow pipes. It is specifically designed to address issues of vibration, which cause the coupling pin to become damaged.
Date: July 10, 1919
Creator: Hiegel, Joseph L.
Object Type: Patent
System: The Portal to Texas History