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Laser cutting with chemical reaction assist (open access)

Laser cutting with chemical reaction assist

This invention is comprised of a method for cutting with a laser beam where an oxygen-hydrocarbon reaction is used to provide auxiliary energy to a metal workpiece to supplement the energy supplied by the laser. Oxygen is supplied to the laser focus point on the workpiece by a nozzle through which the laser beam also passes. A liquid hydrocarbon is supplied by coating the workpiece along the cutting path with the hydrocarbon prior to laser irradiation or by spraying a stream of hydrocarbon through a nozzle aimed at a point on the cutting path which is just ahead of the focus point during irradiation.
Date: April 8, 1991
Creator: Gettemy, D. J.
System: The UNT Digital Library
Cooler and particulate separator for an off-gas stack (open access)

Cooler and particulate separator for an off-gas stack

This report describes an off-gas stack for a melter, furnace or reaction vessel comprising an air conduit leading to two sets of holes, one set injecting air into the off-gas stack near the melter plenum and the second set injecting air downstream of the first set. The first set injects air at a compound angle, having both downward and tangential components, to create a reverse vortex flow, counter to the direction of flow of gas through the stack and also along the periphery of the stack interior surface. Air from the first set of holes prevents recirculation zones from forming and the attendant accumulation of particulate deposits on the wall of the stack and will also return to the plenum any particulate swept up in the gas entering the stack. The second set of holes injects air in the same direction as the gas in the stack to compensate for the pressure drop and to prevent the concentration of condensate in the stack. A set of sprayers, receiving water from a second conduit, is located downstream of the second set of holes and sprays water into the gas to further cool it.
Date: April 8, 1991
Creator: Wright, G. T.
System: The UNT Digital Library
Manufacture of silicon carbide using solar energy (open access)

Manufacture of silicon carbide using solar energy

This invention is comprised of a method is described for producing silicon carbide particles using solar energy. The method is efficient and avoids the need for use of electrical energy to heat the reactants. Finely divided silica and carbon are admixed and placed in a solar-heated reaction chamber for a time sufficient to cause a reaction between the ingredients to form silicon carbide of very small particle size. No grinding of silicon carbide is required to obtain small particles. The method may be carried out as a batch process or as a continuous process.
Date: April 8, 1991
Creator: Glatzmaier, G. C.
System: The UNT Digital Library
Reversibly immobilized biological materials in monolayer films on electrodes (open access)

Reversibly immobilized biological materials in monolayer films on electrodes

A method is provided for reversibly binding charged biological particles in a fluid medium to an electrode surface. The method comprises treating (e.g., derivatizing) the electrode surface with an electrochemically active material; connecting the electrode to an electrical potential; and exposing the fluid medium to the electrode surface in a manner such that the charged particles become adsorbed on the electrode surface.
Date: April 8, 1991
Creator: Weaver, P. F. & Frank, A. J.
System: The UNT Digital Library
Bale Tile (open access)

Bale Tile

Patent for a bale tie for cotton bales.
Date: April 8, 1913
Creator: Frantz, Ezra A.
System: The Portal to Texas History
Clothes-Pin. (open access)

Clothes-Pin.

Patent for Clothes Pin made of galvanized wire that will remain normally on the line. It will also prevent the adjacent pins from becoming tangled together. It's twisted portions adapted for riding content with the line to hold the pin in operative position.
Date: April 8, 1913
Creator: Perry, Cornelius Doctor & Wosnig, Walter, E.
System: The Portal to Texas History
Churn (open access)

Churn

Patent for a new and improved churn and cooler which allows for easier removal of the cooling liquid and includes illustrations and description.
Date: April 8, 1913
Creator: Sibley, William P. & Williamson, Riley B.
System: The Portal to Texas History
Bale-Tie. (open access)

Bale-Tie.

Patent for a bale tie that can withstand strain on the side of the band. The text describes the different parts of the bale tie and how it differs from ones currently used.
Date: April 8, 1913
Creator: Franz, Ezra A.
System: The Portal to Texas History
Condensing Apparatus (open access)

Condensing Apparatus

Patent for a condensing apparatus designed to be attached to linting machines.
Date: April 8, 1919
Creator: Martin, G. W.
System: The Portal to Texas History
Valve-Lifter (open access)

Valve-Lifter

Patent for an improved device that can be applied to a valve spring plate without losing grip.
Date: April 8, 1920
Creator: Chaney, Robert
System: The Portal to Texas History
Attachment for Water-Pipes (open access)

Attachment for Water-Pipes

Patent for attachment for water pipes to prevent bursting of water pipes due to freezing of water while it passes through the pipes.
Date: April 8, 1913
Creator: Finlay, John K.
System: The Portal to Texas History
Antispreading Device for Railway-Tracks. (open access)

Antispreading Device for Railway-Tracks.

Patent for improvement for preventing the railroad tracks from spreading by using a device to connect the ends of two parallel rail to connecting adjacent pair of rails.
Date: April 8, 1919
Creator: Stovall, John T.
System: The Portal to Texas History
Wagon Attachment. (open access)

Wagon Attachment.

Patent for a new and improved wagon attachment. This design "relates to hay frames or racks for use with the ordinary box wagon-bodies; and it has for its object to provide a light frame or rack of simple construction adapted for adjustment to wagon boxes or bodies of different width and so constructed as to be folded in a compact form. To these ends the invention consists in a foldable hay frame or rack adapted to fit into a wagon-body and adapted for adjustment to such body; also, in structural features and combination of parts" (lines 19-30).
Date: April 8, 1890
Creator: Haupt, William W.
System: The Portal to Texas History
Lock Stitch Ripper. (open access)

Lock Stitch Ripper.

Patent for a new and improved multi-tool. This design "relates to an improved combination tool or implement designed to be used in connection with sewing-machines, and combining in a convenient form several instruments which operators on sewing-machines should always have ready at hand" (lines 9-14).
Date: April 8, 1884
Creator: Wheeler, Elijah Harvey
System: The Portal to Texas History
Lift or Elevator. (open access)

Lift or Elevator.

Patent for a new and improved elevator. This design "consists in the construction of the operating mechanism . . . whereby the mechanism may be regulated or adjusted to run fast or slow, according to the weight of the load to be carried, it being adjusted to run slow, but with great power, when heavy loads are to be lifted, but to run fast, but with lesser power, when lighter loads are to be lifted" (lines 28-37).
Date: April 8, 1884
Creator: Krause, Earnest.
System: The Portal to Texas History
Incinerator (open access)

Incinerator

Patent for improvement in incinerators by unique arrangement of receiving passage and receiving post closing the lower end with a second passage inclining.
Date: April 8, 1919
Creator: McCutcheon, Joe Alford
System: The Portal to Texas History
Machine for Forming Cotton-Seed Meal into Cakes (open access)

Machine for Forming Cotton-Seed Meal into Cakes

Patent for "an organized machine adapted to rapidly compress charges of cotton-seed meal into cakes of sufficient solidity to bear handling and removal to a press, whereby the oil is expressed therefrom, and to deliver said cakes at a point or points in convenient proximity to said press or presses, so that the time and labor involved in preparing the meal for the, press and of inserting it therein will be reduced to the minimum" (lines 9-18).
Date: April 8, 1890
Creator: Price, James S.
System: The Portal to Texas History
Improvement in Tents. (open access)

Improvement in Tents.

Patent for certain new and useful improvements in military tents that relates to folding tents including illustrations.
Date: April 8, 1873
Creator: Turner, Ephraim M.
System: The Portal to Texas History
Vehicle-wheel. (open access)

Vehicle-wheel.

Patent for a vehicle wheel that does not wear down as quickly as those currently used and that better absorb shock. The text explains the different parts of the new wheel and why it is an improvement over current wheels.
Date: April 8, 1913
Creator: Anderson, Lycurgus
System: The Portal to Texas History
Vacuum-Pan (open access)

Vacuum-Pan

Patent for "vacuum-pan having improved heating-sections and an improved form of discharge-chamber" [lines 9-11].
Date: April 8, 1902
Creator: Ribaud, George Louis
System: The Portal to Texas History
Mechanical Movement. (open access)

Mechanical Movement.

Patent for improvements in mechanical movements by using cranks and wrist pins to “converting rotary motion, like that of a wheel or pulley, into reciprocating motion.” (Lines 12-14) Illustration is included.
Date: April 8, 1902
Creator: McKean, Frank
System: The Portal to Texas History
Improvement in Hooks for Suspending Meat. (open access)

Improvement in Hooks for Suspending Meat.

Patent for an improved meat suspending device that will prevent ants and insects from reaching meat, including illustrations.
Date: April 8, 1879
Creator: Mason, Sanford
System: The Portal to Texas History
Improvement in Baling-Presses. (open access)

Improvement in Baling-Presses.

Patent for improvements to presses used for baling cotton and other materials, including illustrations.
Date: April 8, 1879
Creator: McGowen, Edmond Felder
System: The Portal to Texas History
Milo-Maize and Kafir Corn Header (open access)

Milo-Maize and Kafir Corn Header

Patent for a corn header that uses vertically adjustable heading devices that allows for some flexibility of the heading device with one of the ground wheels of the machine.
Date: April 8, 1913
Creator: Jackson, William
System: The Portal to Texas History