Model Study of Plans for Channel Improvement at Dogtooth Bend, Mississippi River, Folder 1 (open access)

Model Study of Plans for Channel Improvement at Dogtooth Bend, Mississippi River, Folder 1

This memorandum, constitutes a report on the results of experiments conducted at the U. S. Waterways Experiment Station on a small scale model of that reach of the Mississippi River near and including Dogtooth Bend (Mile 32.7 above to Mile 4.0 below Cairo).
Date: April 2, 1938
Creator: Waterways Experiment Station (U.S.)
Object Type: Report
System: The UNT Digital Library
Fiber-Machine. (open access)

Fiber-Machine.

Patent for an improvement in fiber machines that is "adaptable to fibers of various plants; but it is especially designed for separating the fiber of plants found in Mexico--such as lechugilla, Spanish dagger, and similar plants" (lines 28-32). The machine is used to separate the usable fiber from the leaves, stalks, and other parts of the plants.
Date: September 2, 1884
Creator: Worthington, George & Parvin, Enoch, J.
Object Type: Patent
System: The Portal to Texas History
Fiber machine. (open access)

Fiber machine.

Patent for the improvement of fiber-machines, using rolls, bearings, wheels, brushes, racks and pinions.
Date: September 2, 1884
Creator: Worthington, George & Parvin, Enoch J.
Object Type: Patent
System: The Portal to Texas History
Seal-Lock. (open access)

Seal-Lock.

Patent for car locks "that cannot be tampered with without the fact being readily perceptible, and thus prevent the car passing unobserved the point where such lock was opened." (Lines 13-16) Includes instructions and illustrations.
Date: February 2, 1897
Creator: Haley, Fred H.
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
Plow (open access)

Plow

Patent for plow. Illustration included.
Date: April 2, 1907
Creator: Hendon, Walter P.
Object Type: Patent
System: The Portal to Texas History