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Rockwall County

Description: Cadastral map of Rockwall County, Texas in the Prairies and Lakes region. Some borders are marked in color. Scale ca. 1:66,667 (2000 varas per inch).
Date: 1874
Creator: Arlitt, F. H.
Partner: Texas General Land Office

Improvement in Construction of Jails.

Description: Patent for improvement in construction of jails; in which a system of flues in between layers of a double floor provide ventilation through grates in the walls and upper layer of the floor, without compromising security.
Date: October 19, 1875
Creator: Seeber, John A. & Croxton, James C.
Partner: UNT Libraries Government Documents Department

[Letter from John C. Brewer to Emma Davis, May 18 & 19, 1879]

Description: Letter from John C. Brewer to Emma Davis. The first part of the letter is dated May 18, 1879, and the second part is dated May 19, 1879. The first part discusses John being ill, a barbecue John and Emma attended, and mutual acquaintances. The second part discusses John feeling better, and a "singing" he went to.
Date: May 18, 1879
Creator: Brewer, John C.
Partner: Private Collection of Melvin E. Brewer

Plow.

Description: Patent for a new and improved plow. This design consists in "[t]he combination, with a plow-beam, of a plow-standard pivotally secured to the rear end of said beam, a brace pivotally secured to the standard, and a sliding clamp for securing the front end of the brace to the beam" (lines 90-94).
Date: April 13, 1886
Creator: Ketchum, Joel Thomas
Partner: UNT Libraries Government Documents Department

Drill.

Description: Patent for a new and improved drill. This design consists in "the combination, with the main shaft carrying two bevel gear-wheels, of a shaft carrying a bevel gear-wheel adapted to be connected alternately with the two bevel gear-wheels on said main shaft, a pinion secured on the said shaft, and a disk provided with a bevel gear-wheel meshing in the said pinion, said disk being connected with the drilling-tool, so that the latter can move freely up and down, but is turned by the said disk" (lines 111-120).
Date: June 26, 1888
Creator: Godwin, John Calhoon.
Partner: UNT Libraries Government Documents Department

Rockwall Co.

Description: Blue line print of survey map of Rockwall County, Texas, showing rivers, creeks, original land grants or surveys, and towns. Scale [ca. 1:160,000] (6000 varas to 1 1/4 of an inch).
Date: [1890..1925]
Partner: Hardin-Simmons University Library

Ejector-Pump.

Description: Patent for an improved ejector pump that operates using air or steam pressure, and pumps water any height or distance. The invention is easily operated and practical.
Date: January 23, 1894
Creator: Nevill, William Birt
Partner: UNT Libraries Government Documents Department

Pumping Apparatus.

Description: Patent for a pumping apparatus that has "certain improvements in that class of pumps known as ejectors for raising liquids out of wells by means of compressed air or stream" (lines 9-12). The pump quickly and easily raises large amounts of water and is an improvement on a patent previously granted to the inventor (No. 474,819).
Date: March 27, 1894
Creator: Nevill, William Birt
Partner: UNT Libraries Government Documents Department

Bolt and Nut-Lock.

Description: Patent for "a nut-lock of such construction that it may be used either as a permanent nut-lock or one in which the locking feature may be thrown out of engagement when it is desired to remove the bolt for any purpose." (Lines 15-20) Includes instructions and illustrations.
Date: January 21, 1896
Creator: Nevill, William B.
Partner: UNT Libraries Government Documents Department

Machine for Making Tablets

Description: Patent for a machine for making tablets. This patent describes improvements in tablet-making machines or molds, which will be simple in construction and which will make tablets of different sizes, there being provided plates which are perforated and of different sizes whereby the thickness which it is desired to mold the tablets may be regulated.
Date: February 25, 1896
Creator: Loving, Joseph H.
Partner: UNT Libraries Government Documents Department

Antirefilling Bottle.

Description: Patent for a bottle that can be easily sealed but cannot be resealed after opened. There is a groove in the neck of the bottle, and the cork is placed below the groove. The cork is hollowed out and a plug is placed in the cork. The cork is hollowed out and a plug with a groove around it is placed in the cork.An elastic compressible locking-ring fits in the gap the groove in the bottle and the groove in the plug create.
Date: January 5, 1897
Creator: Nevill, William B.
Partner: UNT Libraries Government Documents Department

Cattle-Guard.

Description: Patent for a railway cattle-guard that is simple, inexpensive, and efficient. It prevents the cattle "from traversing a railway-track in order to pass form one field or inclosure to another" (line 12-14). It has spurred rollers, and has a unique way of mounting rollers or rotary ties, in that they do not block the track.
Date: January 5, 1897
Creator: Nevill, William Birt
Partner: UNT Libraries Government Documents Department