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Automatic voltage-imbalance detector
A device is described for indicating and preventing damage to voltage cells such as galvanic cells and fuel cells connected in series by detecting sequential voltages and comparing these voltages to adjacent voltage cells. The device is implemented by using operational amplifiers and switching circuitry is provided by transistors. The device can be utilized in battery powered electric vehicles to prevent galvanic cell damage and also in series connected fuel cells to prevent fuel cell damage.
Date:
May 20, 1981
Creator:
Bobbett, R. E.; McCormick, J. B. & Kerwin, W. J.
System:
The UNT Digital Library
Spring Wheel.
Patent for new and useful improvements in spring wheels sufficient to enable it to successfully stand up under the shocks and jars to which such wheels are ordinarily subjected, while at the same time having all the wearing qualities and resiliency of the pneumatic tire.
Date:
May 20, 1920
Creator:
Atkinson, George C.
System:
The Portal to Texas History
Boiler-Skimmer
Patent for a boiler-skimmer that assist in preventing external pressures from collapsing the float values. These type of boilers are used in steam locomotives.
Date:
May 20, 1919
Creator:
Schreiber, Norbert
System:
The Portal to Texas History
Collapsible Rim.
Patent for new and useful improvements related to demountable rims that are collapsible. This improvement facilitates the removal of a tire in an easier and expeditious manner.
Date:
May 20, 1919
Creator:
King, Willis C.
System:
The Portal to Texas History
Dental Plate
Patent for an improved dental plate design that fits better in the mouth of the user and allows for easier speaking and eating.
Date:
May 20, 1919
Creator:
Glaser, Adolph J.
System:
The Portal to Texas History
Farming Implement
Patent for a farming double plough. This increased a farmers ability to break up the soil and increase productivity.
Date:
May 20, 1919
Creator:
Raun, George
System:
The Portal to Texas History
Adjustable WIndow Shade Bracket
Patent for an adjustable window shade.
Date:
May 20, 1913
Creator:
Brown, James R.
System:
The Portal to Texas History
Camera Attachment
Patent for a camera attachment.
Date:
May 20, 1913
Creator:
Moine, Selest E.
System:
The Portal to Texas History
Composition of Matter to be Introduced into the Inner Tubes of Pneumatic Tires for Rendering the Tires Puncture-Proof.
Patent for a mixture of dextrin, asbestos, magnesia, glycerin, wood alcohol and water that is introduced into tire tubes to prevent and seal tire punctures.
Date:
May 20, 1913
Creator:
Causey, Thomas S.
System:
The Portal to Texas History
Feed Mixer
Patent for refinements in feed mixer technology.
Date:
May 20, 1913
Creator:
Dixon, Elbert S. & Werner, Henry E.
System:
The Portal to Texas History
Folding Car-Step
Patent for "new and useful Improvements in Folding Car-Steps" (lines 5-6) to facilitate easier passenger boarding of rail cars, including instructions and illustrations.
Date:
May 20, 1913
Creator:
Mayhew, Edwin B.
System:
The Portal to Texas History
Funnel
Patent for a funnel designed to fill various containers.
Date:
May 20, 1913
Creator:
Kott, Arthur O.
System:
The Portal to Texas History
Mechanism for Signaling Track Conditions
Patent for a mechanism that would be placed on a bridge or trestle trains pass over that automatically indicates dangerous track conditions.
Date:
May 20, 1913
Creator:
Matsler, James M. & Matsler, Benjamin T.
System:
The Portal to Texas History
Osteopathic Table
Patent for improvements in Osteopathic Tables by adding mechanical parts to facilitate ease of movement and manipulation of the human body for "correcting and curing physical irregularities of the spine and ribs" (lines 19-20), includes instructions and illustrations.
Date:
May 20, 1913
Creator:
Sherwood, L. Walker
System:
The Portal to Texas History
Puncture-Closing Compound.
Patent for closing the punctures or blow-outs in tires for automobiles or other vehicles using inflatable tires.
Date:
May 20, 1913
Creator:
Watkins, William J.
System:
The Portal to Texas History
Safety Stirrup
Patent for various improvements in safety stirrups.
Date:
May 20, 1913
Creator:
Sipes, Alfred M.
System:
The Portal to Texas History
Smoothing-Drag
Patent for improvements to a smoothing drag, a tool that smoothes the ground between rows of crops to prevent moisture loss from the soil.
Date:
May 20, 1913
Creator:
Davison, Morgan
System:
The Portal to Texas History
Store Furniture.
Patent for a ribbon or tape cabinet with rotating stand which allows access to all compartments through a single cabinet opening.
Date:
May 20, 1913
Creator:
Koniakowsky, Louis F.
System:
The Portal to Texas History
Subsoil Irrigating Implement
Patent for a farming irrigation cart which places the water beneath the soil using a plow.
Date:
May 20, 1913
Creator:
La Rue, Joseph A.
System:
The Portal to Texas History
Eyeglasses.
Patent for eyeglasses that builds upon the inventor's previous patent, No. 654,523, and utilizes a set of nose pieces, lenses, and springs to improve upon existing eyeglasses technology.
Date:
May 20, 1902
Creator:
Critzer, Augustus B.
System:
The Portal to Texas History
Fertilizer-Distributer.
Patent for a fertilizer-distributer with "means for agitating and loosening up the fertilizing material and delivering the same through a series of discharge-openings, such series extending transversely of the path of movement of the machine across the field and controlled by individual and independently-operable feed slides or gates, whereby the machine may be used for simultaneously fertilizing adjoined furrows or as a broadcast fertilizer-distributer" (Lines 12-21).
Date:
May 20, 1902
Creator:
Mize, William P.
System:
The Portal to Texas History
Pipe - Grab.
Patent for new and useful improvements in pipe-graps for the purpose of "raising and lowering pipe and tools used in drilling oil-wells" (line 8-10), including illustrations.
Date:
May 20, 1902
Creator:
Matula, Valentine
System:
The Portal to Texas History
Apparatus for Cooling Water.
Patent for a water-cooling apparatus composed chiefly of a subterranean cistern and a water-supply source.
Date:
May 20, 1901
Creator:
William J. Dossey
System:
The Portal to Texas History
Cotton-Seed-Meal Heater
Patent for improvements to cotton-meal heaters "to provide means to communicate as much heat as possible to the meal contained in the heater in as short a time as possible, and to retain the heat in the meal until it has all been used in forming the cakes" (lines 18-22).
Date:
May 20, 1890
Creator:
Price, James Sterling
System:
The Portal to Texas History