Flour-Sifter. (open access)

Flour-Sifter.

Patent for a centrifugal flour sifter that removes pests, mold, and debris.
Date: September 13, 1921
Creator: Brewer, Johnson
Object Type: Patent
System: The Portal to Texas History
Stalk-Cutter Attachment. (open access)

Stalk-Cutter Attachment.

Patent for a planter attachment. It allows quick attachment of a stalk cutter that would let a planter serve two purposes.
Date: February 7, 1922
Creator: Haynes, Jack M.
Object Type: Patent
System: The Portal to Texas History
Production and Development Problems in the Powell Oil Field, Navarro County, Texas (open access)

Production and Development Problems in the Powell Oil Field, Navarro County, Texas

From Introduction: "The Mexia-Powell fault fields have long held the attention of the oil industry, and this report proposes to present information on these fields and to interpret it for the consideration and guidance of all persons concerned in further development of the area. Detailed study of this field was made primarily to obtain a better working knowledge of the major features, involving structural conditions, the character and nature of the Woodbine pay sand, and the source of water."
Date: 1928
Creator: Hill, H. B. & Sutton, Chase E.
Object Type: Report
System: The UNT Digital Library
Attachment for Rotaries. (open access)

Attachment for Rotaries.

Patent for rotary well-drilling machinery where the "ring or bushing to rotate independently of the table and the present invention is directed to means for accomplishing the rotating effect." (line 24-27)
Date: July 20, 1920
Creator: Johnston, Horace G.
Object Type: Patent
System: The Portal to Texas History
Gas Producer. (open access)

Gas Producer.

Patent for improvements to gas producers of the type in which combustible gases are evolved from coal, lignite, etc., during the incomplete combustion thereof.
Date: April 11, 1922
Creator: Johnston, Horace G.
Object Type: Patent
System: The Portal to Texas History
Guide for Drive-Chains. (open access)

Guide for Drive-Chains.

Patent for a mechanism designed to prevent a guide chain from being displaced from the wheel(s) of its parent machine.
Date: May 17, 1921
Creator: Johnston, Horace G.
Object Type: Patent
System: The Portal to Texas History
Rotary-Drill Head. (open access)

Rotary-Drill Head.

Patent for a drill apparatus that improves the head gears and driving mechanisms that makes for an efficient driving of the apparatus and allows for free vertical movement.
Date: July 27, 1920
Creator: Johnston, Horace G.
Object Type: Patent
System: The Portal to Texas History
Well Bucket (open access)

Well Bucket

Patent for Improvements in well buckets. The bucket has an inlet valve at the bottom and an air escape valve at the top that permits air to escape freely while preventing the entrance of dirt and extraneous matter to the interior of the bucket.
Date: April 11, 1922
Creator: Reese, Samuel L. & Reese, Samuel L.
Object Type: Patent
System: The Portal to Texas History
Surgical Splint. (open access)

Surgical Splint.

Patent for a surgical splint specifically for the substitution of erectile tissue of the corpora cavernous of the genital organ to promote fecundation even in the absence of an erection.
Date: July 13, 1920
Creator: Renois, John J.
Object Type: Patent
System: The Portal to Texas History
Planter Attachment. (open access)

Planter Attachment.

Patent for a seed planter attachment with an easily adjustable shovel.
Date: March 2, 1920
Creator: Sanders, Walter F.
Object Type: Patent
System: The Portal to Texas History

Kemp Quadrangle

Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:62500
Date: 1920
Creator: United States. Army. Corps of Engineers.
Object Type: Map
System: The Portal to Texas History