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Method of recovery of alkali-metal constituents from coal-conversion residues. [Patent application] (open access)

Method of recovery of alkali-metal constituents from coal-conversion residues. [Patent application]

A coal gasification operation or similar conversion process is carried out in the presence of an alkali metal-containing catalyst producing char particles containing alkali metal residues. Alkali metal constituents are recovered from the particles by burning the particles to increase their size and density and then leaching the particles of increased size and density with water, to extract the water-soluble alkali metal constituents.
Date: April 22, 1981
Creator: unknown
System: The UNT Digital Library
ac-resistance-measuring instrument (open access)

ac-resistance-measuring instrument

An auto-ranging ac resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an ac excitation signal for application to a load, including the device and the transmission line, a monitoring circuit which provides a digitally encoded signal representing the voltage across the load, and a microprocessor which operates under program control to provide an auto-ranging function by which range resistance is connected in circuit with the load to limit the load voltage to an acceptable range for the instrument, and an auto-compensating function by which compensating capacitance is connected in shunt with the range resistance to compensate for the effects of line capacitance.
Date: April 22, 1981
Creator: Hof, P. J.
System: The UNT Digital Library
Check-Line Buckle. (open access)

Check-Line Buckle.

Patent for "...a novel means for connecting a check-line to the main line..." (lines 11-12) including illustrations.
Date: April 22, 1902
Creator: Snell, David C. F.
System: The Portal to Texas History
Baling-Press. (open access)

Baling-Press.

Patent for baling-presses to prevent the inward-drawing or centripetal movement of the fiber in a press of the roller type (lines 96-97) by “disposed intermediate of the rollers and within the plane of the baling-cylinder for opposing resistance to the inward movement of the fiber and overcoming to a greater or less extent the tendency of the upper layer of cotton to form waves or billows in advance of the rollers.” (Page 1, lines 101-102, page 2, lines 1-6.) Illustration is included.
Date: April 22, 1902
Creator: Atkinson, Joseph J.
System: The Portal to Texas History
Bit for Well-Drilling Apparatus. (open access)

Bit for Well-Drilling Apparatus.

Patent for a rotary expansion bit for use with well-drilling apparatuses. The bit can be adjusted without removing the well tubing, and can drill a hole large than the tubing in order to insert casing sections.
Date: April 22, 1902
Creator: Sloan, James W.
System: The Portal to Texas History
Crude-Oil Burner (open access)

Crude-Oil Burner

Patent for "new and useful Improvements in Crude-Oil Burners" (lines 4-5), including instructions and illustrations.
Date: April 22, 1901
Creator: Wilson, H.T.
System: The Portal to Texas History
Baling-Press (open access)

Baling-Press

Patent for an improved bailing-press.
Date: April 22, 1902
Creator: Atkinson, Joseph J.
System: The Portal to Texas History
Cigar-Cutter and Match-Safe. (open access)

Cigar-Cutter and Match-Safe.

Patent for a match-safe and cigar-cutter “receptacle for holding matches from which only one match can be taken at one time and to means for shifting the matches and at the same time cutting a cigar-tip.” (Lines 7-11) Illustration is included.
Date: April 22, 1902
Creator: Taylor, James P.
System: The Portal to Texas History
Channel Cleaner. (open access)

Channel Cleaner.

Patent for a new and improved channel cleaner. This design "is to construct an apparatus which may be anchored in a channel where there are sand-bars, for the purpose of agitating the water and stirring up the sand, so that the current may remove it. [The] invention consists in a trunk or large tube perforated along the bottom and provided at one end with a flaring mouth for concentrating the current within the trunk; also, in the combination, with the trunk, of a stirrer and a motor-screw for driving the same" (lines 17-28).
Date: April 22, 1890
Creator: Evans, William
System: The Portal to Texas History
Automatic Car-Dump (open access)

Automatic Car-Dump

Patent for automatic dumpers that can be readily and inexpensively fitted and adapted to most forms of dump car.
Date: April 22, 1913
Creator: Putnam, John J.
System: The Portal to Texas History
Crate (open access)

Crate

Patent for improvements for shipping crates, including illustrations.
Date: April 22, 1913
Creator: Dick, Archie P., Jr.
System: The Portal to Texas History
Clothes-Pin (open access)

Clothes-Pin

Patent for new and useful improvement to clothes pins to automatically lock themselves against accidental disengagement from the clothes line.
Date: April 22, 1913
Creator: Ingersoll, Charles J.
System: The Portal to Texas History
Automobile-Alarm. (open access)

Automobile-Alarm.

Patent for a device to prevent the theft of automobiles capable of producing audio and visual signals as warnings of unauthorized access.
Date: April 22, 1919
Creator: Smith, Thomas H.
System: The Portal to Texas History
Oxidation-resistant interfacial coatings for fiber-reinforced ceramic composites (open access)

Oxidation-resistant interfacial coatings for fiber-reinforced ceramic composites

A ceramic-matrix composite having a multilayered interfacial coating adapted to protect the reinforcing fibers from long-term oxidation, while allowing these to bridge the wake of advancing cracks in the matrix, is provided by selectively mismatching materials within adjacent layers of the interfacial coating, the materials having different coefficients of thermal expansion so that a low toughness interface region is created to promote crack deflection either within an interior layer of the mismatched interfacial coating or between adjacent layers of the mismatched interfacial coating.
Date: April 22, 1999
Creator: Lara-Curzio, Edgar; More, Karren L. & Lee, Woo Y.
System: The UNT Digital Library
Wind-Wheel. (open access)

Wind-Wheel.

Patent for "new and useful Invention in Wind-Wheels" (lines 5-6), including illustrations.
Date: April 22, 1902
Creator: Cannon, Burrell
System: The Portal to Texas History
Listing-Plow. (open access)

Listing-Plow.

Patent for a listing plow, "more particularly an improvement upon the structure disclosed in Patent No. 866,679, issued to [Gottfried Persson] on September 24, 1907" (lines 9-11), including instructions and illustrations.
Date: April 22, 1913
Creator: Persson, Gottfrid
System: The Portal to Texas History
Type-Writer Cabinet. (open access)

Type-Writer Cabinet.

Patent for a typewriter cabinet with swinging typewriter support held in position by foot pressure.
Date: April 22, 1913
Creator: Keltz, Eugene L. & Rhoads, John M.
System: The Portal to Texas History
Improvement in Cultivators. (open access)

Improvement in Cultivators.

Patent for an improvement in the design of corn cultivators, including illustrations.
Date: April 22, 1873
Creator: Helm, Jack
System: The Portal to Texas History
Improvement in Seed Planters. (open access)

Improvement in Seed Planters.

Patent for new improvement in seed planting that describes parts of the construction including instructions and illustrations.
Date: April 22, 1873
Creator: Suggs, Isaac T.
System: The Portal to Texas History
Improvement in Methods of Adjusting Signaling-Mirrors. (open access)

Improvement in Methods of Adjusting Signaling-Mirrors.

Patent for an improvement in the "method of throwing reflected light of a mirror with accuracy upon a distant object in flash-signaling" (lines 5-7), including illustrations.
Date: April 22, 1873
Creator: Kenney, Martin M.
System: The Portal to Texas History
Veterinary Medicine (open access)

Veterinary Medicine

Patent for "a compound for the eradication of screw-worms in animals, and it has for its object toprovide a simple and inexpensive compound of this character which will quickly and efficiently destroy the worms, and at the same time serve as both an astringent and antiseptic to the wound" (lines 10-16).
Date: April 22, 1890
Creator: Youngkin, John A. & Youngkin, Josiah S.
System: The Portal to Texas History
Hydrocarbon-Burner. (open access)

Hydrocarbon-Burner.

Patent for "a new and useful Hydrocarbon-burner...equipped with a safety device adapted to admit only a limited supply of gasolene or other fuel to the burner to enable the latter to be operated with absolute safety by either a woman or a child" (lines 5-19), including instructions and illustrations.
Date: April 22, 1913
Creator: Nemec, Joseph
System: The Portal to Texas History
Tie-Plate. (open access)

Tie-Plate.

Patent for Tie-Plate, which is an improvement on rail ties for railroad use. The Tie-Plate is a "single piece of material", providing a "rail supporting surface" (pg. 2, lines 13-17). Ribbing in the plate, allow for adjustable height to support the rails and a seat for the spikes.
Date: April 22, 1913
Creator: Clarke, Marcus S.
System: The Portal to Texas History
Submarine Telescope. (open access)

Submarine Telescope.

Patent for submarine telescope using a pair of longitudinal tubes, mounted lens, rigid rods, electric light bulb, and chains for securing to the boat. Intended as useful improvements to submarine telescopes with the objection to assist in locating submerged objects. Accompanied with illustrations.
Date: April 22, 1919
Creator: Armstrong, William S.
System: The Portal to Texas History