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Plate Retaining Device
Patent for a license plate holder for automobiles.
Date:
April 13, 1915
Creator:
Stafford, Frederick
Object Type:
Patent
System:
The Portal to Texas History
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.
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
The Roundheaded Apple-Tree Borer
This report discusses the roundheaded apple-tree borer, an insect in the eastern and midwestern United States that, in its larval stage, destroys the bark and wood of apple trees. Several methods of control are discussed, including worming, paints and washes, and sprays.Apple-tree borers.
Date:
1915
Creator:
Brooks, Fred E.
Object Type:
Pamphlet
System:
The UNT Digital Library
Occurrence of Explosive Gases in Coal Mines
From Introduction: "This report presents the results of an investigation begun by the Government in the summer of 1907, the investigation being started under the immediate supervision of Dr. J. A Holmes and continued under him as director after it was transferred to the Bureau of Mines in 1910, the field studies being completed in the spring of 1912. The purpose of the investigation was to obtain information on the origin of the inflammable gases in coal and the conditions under which they occur."
Date:
1915
Creator:
Darton, N. H.
Object Type:
Report
System:
The UNT Digital Library
Mine-Ventilation Stoppings: with Especial Reference to Coal Mines in Illinois
Purpose of Report: "In this report an attempt is made to discuss the first cost of each of several types of mine-ventilation stoppings, as well as the total annual expenses of maintaining a stopping during its required period of service."
Date:
1915
Creator:
Williams, R. Y.
Object Type:
Report
System:
The UNT Digital Library
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