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Wrecking-Frog.

Description: Patent for "an improved frog for use in placing derailed cars or locomotives upon the rails, exceedingly simple and durable in construction, and formed substantially in one piece - that is, not in sections - and having improved means to lock the frog to the rail." (Lines 17-22) Includes instructions and illustrations.
Date: March 29, 1892
Creator: Wilmore, William Henry
Partner: UNT Libraries Government Documents Department

Life Boat.

Description: Patent for a new and improved life boat. This design "consists in providing a steam-launch with a float on each side, secured by suitable strong braces thereto, and to provide said floats with a hand-rail, so that persons can hold onto said rails, and are prevented from being washed off" (lines 17-22).
Date: March 13, 1883
Creator: Dwyer, Daniel
Partner: UNT Libraries Government Documents Department

Life Boat.

Description: Patent for a new and improved life boat. This design consists "[i]n a life-boat, the combination of a hull having the portion of its sides above the water-line overhanging and concave and having the portion of its sides below the water-line convex, with air-chambers having their inner walls curved corresponding to the curves of the upper portion of the sides and converging into the sides at their lower edges, the said chambers increasing in capacity toward the upper edges of the sides of the hu… more
Date: June 16, 1885
Creator: Dwyer, Daniel
Partner: UNT Libraries Government Documents Department

Machine for Filing Gin Saws.

Description: Patent for a new and improved machine to sharpen the teeth of cotton gin saws. This design utilizes two bevel-faced wheels connected to a block between two arms that clamp the saw blade. The bevel-faced wheels sharpen the teeth of the blade, and the nuts and bolts of the frame allow for movement as well as tightening and loosening.
Date: August 17, 1880
Creator: McAllister, Alexander F.
Partner: UNT Libraries Government Documents Department

Locomotive Driving-Box

Description: Patent for a locomotive driving box which provides shoes, wedges, and other train parts for repair. Illustrations included.
Date: April 30, 1912
Creator: Walsh, Frank A.
Partner: UNT Libraries Government Documents Department

Machine for Cutting Key-Seats in Shafting

Description: Patent for "cutting key-seats in shafting machine. It provides a portable key-seat-cutting especially adapted to operate upon the driving shafts of locomotives in key-seating eccentrics thereon." (lines 7-13)
Date: August 21, 1906
Creator: Matheus, Karl
Partner: UNT Libraries Government Documents Department

Type-Writer Attachment.

Description: Patent for a typewriter attachment that shifts the carriage by foot rather than by hand.
Date: August 15, 1916
Creator: Ward, Mizell Benjamin
Partner: UNT Libraries Government Documents Department

Window-Screen.

Description: Patent for improvements in screen constructions in connection with doors or windows. The goal is to provide a means for encouraging insects that are on the inner surfaces of the screen.
Date: January 20, 1920
Creator: McGeorge, Jefferson F.
Partner: UNT Libraries Government Documents Department

Wrench.

Description: Patent for a new and improved wrench. This design is "especially adapted for manipulating pipe-joints, though applicable, also, for use in manipulating nuts, &c.; and it consists in the [novel] detailed construction and combination of operating parts" (lines 24-28).
Date: September 21, 1880
Creator: Weir, Duncan
Partner: UNT Libraries Government Documents Department

Locomotive-Headlight.

Description: Patent for an independent reservoir lamp for locomotive head lights. "?The conduit by which the reservoir and burner communicate is liable to be obstructed with sediment which not only interferes with the suitable flow of oil but corrodes the metal and necessitates repairs" (lines 13-17). The invention is convenient to use and inexpensive.
Date: April 25, 1893
Creator: Owens, Thomas B.
Partner: UNT Libraries Government Documents Department

Type-Writing Machine.

Description: Patent for a type-writing machine that has an improved variable line spacer. The simple and durable line spacer has the minimum number of parts and is easily adjustable to any distance.
Date: June 19, 1894
Creator: Hudson, John Horace
Partner: UNT Libraries Government Documents Department

Truck.

Description: Patent for a strong but light steel framed truck with a beamless braking system that is affordable and easy to repair.
Date: May 7, 1907
Creator: McKiel, James B.
Partner: UNT Libraries Government Documents Department

Improvement in liquid-measuring tanks.

Description: Patent for an airtight and fireproof measuring tank for lamp oils, usable in both daytime and nighttime. Includes illustrations.
Date: August 22, 1876
Creator: Williams, Blasius
Partner: UNT Libraries Government Documents Department

Improvement in Revolving Conical Mold-Boards

Description: Patent for improvements and new design for a Revolving Conical Mold-Board Plow.
Date: May 22, 1877
Creator: Dryer, Charles Valentine
Partner: UNT Libraries Government Documents Department

Improvement in Seed-Planters.

Description: Patent for "revolving-cylinder seed-planters; and its object is to furnish a strong and durable implement adapted to plant with precision various kinds of seed, and the wheels of which are not liable to become clogged with earth." (Lines 12-17) Includes instructions and illustrations.
Date: November 13, 1877
Creator: Burris, John W.
Partner: UNT Libraries Government Documents Department

Improvement in Sinking Pneumatic Piles or Caissons.

Description: Patent for certain improvements in sinking and securing of pneumatic piles or caissons, including instructions and illustrations.
Date: May 13, 1873
Creator: Sickels, Frederick E.
Partner: UNT Libraries Government Documents Department

Watch-Case Bow

Description: Patent for improvements in fastenings for bows of watch-cases.
Date: March 19, 1889
Creator: Cooper, Jonathan H.
Partner: UNT Libraries Government Documents Department

Improvement in Baling Presses.

Description: Patent for improvements to "the construction and combination of the levers, rack-bars, and pawls with each other, and with the follower and baling-box" (lines 15-17).
Date: May 10, 1870
Creator: Stroud, Bryant F.
Partner: UNT Libraries Government Documents Department

Improvement in Grinding-Mills

Description: Patent for an improvement in grinding-mills, combining the operative mechanism with spindles - in which the both the grinding stones obtain relative surface speeds only half the actual speed of the stones.
Date: May 9, 1871
Creator: Hensley, Henry
Partner: UNT Libraries Government Documents Department

Improvement in Bedsteads.

Description: Patent for the improvement of bedsteads in order to make them more convenient and durable.
Date: August 8, 1871
Creator: Baldwin, Thomas B.
Partner: UNT Libraries Government Documents Department

Improvement in Hand-Cultivators.

Description: Patent for "hand-cultivators; and the novelty consists in the improved construction and arrangement of the stock, tongue, and plows; and in the application to the end of the tongue of a shoulder-strap to assist in working the implement." (Lines 15-20) Includes instructions and illustrations.
Date: February 27, 1872
Creator: Jones, William G.
Partner: UNT Libraries Government Documents Department

Improvement in Cotton-Choppers and Cultivators

Description: Patent for a improved version of the cotton-chopper, used for the cultivation of cotton. This is a new arrangement of part of the cotton-chopper as it fits in with the complete machine.
Date: April 16, 1872
Creator: Harcrow, James M.
Partner: UNT Libraries Government Documents Department

Propeller Shaft Bearing.

Description: Patent for a new and improved propeller-shaft bearing. This design consists, "with the horizontal propeller-shaft, of the single central stationary thrust-block through which the shaft snugly extends, the opposite ends of said block being each flattened and provided with a circular groove concentric with the shaft, the pair of collars rigidly secured to the shaft at the opposite ends of said central block, the inner ends of said collars each having a groove corresponding with the grooves in the… more
Date: July 8, 1890
Creator: Gaffield, William Z.
Partner: UNT Libraries Government Documents Department

Improvement In Bagasse-Furnaces.

Description: Patent for improvements in Bagasse Burners or Furnaces.
Date: April 17, 1878
Creator: Littlejohn, William
Partner: UNT Libraries Government Documents Department
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