Resource Type

Language

Combined Elastic Clutch and Engine-Starter (open access)

Combined Elastic Clutch and Engine-Starter

Patent for a combined elastic clutch and engine starter for hydrocarbon engines that does not produce a jerk.
Date: April 23, 1912
Creator: Reagan, Edgar U. G.
System: The Portal to Texas History
Antifreezing Valve and Closet-Cistern (open access)

Antifreezing Valve and Closet-Cistern

Patent for "valves which will allow all the water to flow out of the popes to a position below freezing-point after each application of water, whether the water is used in a closet-cistern or drawn out of a hudrant or other application is made, and to arrange the valves so that the supply-valves will be automatically closed by water-pressure in connection with the operation of a siphon in a closet-cistern and the waste-valve will be closed by the pressure of water, siphonic action, or both, when the supply-valves are opened." (lines 18-28).
Date: April 23, 1901
Creator: Wilkes, George W.
System: The Portal to Texas History
Compound Railway-Rail (open access)

Compound Railway-Rail

Patent for a compound railway-rail. This invention is a solid open jointed rail whereby two longitudinal section may be brought together without creating open joints. Illustration included.
Date: April 23, 1907
Creator: Stephens, George B.
System: The Portal to Texas History
Coupling for Connecting Plows Tandem. (open access)

Coupling for Connecting Plows Tandem.

Patent for a coupling for holdings plows together that allows for the plows to be close together, easily turned, and lets each plow perform its full function uninhibited by the other plows.
Date: April 23, 1907
Creator: Brooks, John L. M.
System: The Portal to Texas History
Attachment for Display Figures (open access)

Attachment for Display Figures

Patent for an attachment for display figures that fills out the sleeves of a garment.
Date: April 23, 1912
Creator: Beyette, William H.
System: The Portal to Texas History
Closet-Cistern and Valve Therefor (open access)

Closet-Cistern and Valve Therefor

Patent for "a cistern which needs no valve to start the siphon to work and to construct a valve which can be operated by a rod which runs up through the supply-pipe, thus doing away with the stuffing-box for a rod for operating the valve" (lines 11-16).
Date: April 23, 1901
Creator: Wilkes, George W.
System: The Portal to Texas History
Corn or Cotton Planter. (open access)

Corn or Cotton Planter.

Patent for a new and improved planter. This design consists in "the combination, with the hopper and the seed-slide therein having one end projecting from one end of the hopper, of the reciprocating yoke having its rear portion angular in cross-section and its front portion cylindrical in cross-section and having an arm at one end to engage the opening in the projecting end of the seed-slide, the angular and cylindrical bearings for the respective parts of the yoke, whereby the latter may be unshipped from or attached to the seed-slide, and the mechanism to reciprocate the yoke" (lines 71-83).
Date: April 23, 1889
Creator: Armstrong, John Joshua & Lowrey, Andrew Stephen
System: The Portal to Texas History
Improved monolithic tandem solar cell (open access)

Improved monolithic tandem solar cell

A single-crystal, monolithic, tandem, photovoltaic solar cell is described which includes (a) an InP substrate having upper and lower surfaces, (b) a first photoactive subcell on the upper surf ace of the InP substrate, (c) a second photoactive subcell on the first subcell; and (d) an optically transparent prismatic cover layer over the second subcell. The first photoactive subcell is GaInAsP of defined composition. The second subcell is InP. The two subcells are lattice matched.
Date: April 23, 1991
Creator: Wanlass, M. W.
System: The UNT Digital Library
Electrochemical cell (open access)

Electrochemical cell

This invention is comprised of an electrochemical cell has a layer-type or sandwich configuration with a Teflon center section that houses working, reference and counter electrodes and defines a relatively narrow electrolyte cavity. The center section is surrounded on both sides with thin Teflon membranes. The membranes are pressed in place by a pair of Teflon inner frames which are in turn supported by a pair of outer metal frames. The pair of inner and outer frames are provided with corresponding, appropriately shaped slits that are in plane generally transverse to the plane of the working electrode and permit X-ray beams to enter and exit the cell through the Teflon membranes that cover the slits so that the interface between the working electrode and the electrolyte within the cell may be analyzed by transmission geometry. In one embodiment, the center section consists of two parts, one on top of the other. Alternatively, the center section of the electrochemical cell may consist of two intersliding pieces or may be made of a single piece of Teflon sheet material. The electrolyte cavity is shaped so that the electrochemical cell can be rotated 900 in either direction while maintaining the working-and counter electrodes …
Date: April 23, 1991
Creator: Nagy, Z.; Yonco, R. M.; You, Hoydoo & Melendres, C. A.
System: The UNT Digital Library
Boring-Drill. (open access)

Boring-Drill.

Patent for detachable heads and plates for frusco-conical rollers that allow for space between drills, including illustrations.
Date: April 23, 1918
Creator: Reed, Clarence Edward
System: The Portal to Texas History
Camp Bedding-Roll (open access)

Camp Bedding-Roll

Patent for a bedding roll in which the main sheet is adapted to receive a mattress or be stuffed with straw, grass, or leaves to enable it to be used as a bed-sack.
Date: April 23, 1918
Creator: Waugh, Julia Nott
System: The Portal to Texas History
Reamer. (open access)

Reamer.

Patent for an enlarged reamer for maintaining the gage of the hole comprising a head threaded at one end for attachment to the drill and disk-shaped reaming cutters housed in slots in the sides.
Date: April 23, 1918
Creator: Hughes, Howard R.
System: The Portal to Texas History
Wrench. (open access)

Wrench.

Patent for a "powerful wrench of simple construction, wherein the movement for the operation of the jaws is of slight degree, partially automatic, and easily affected" (lines 41-45).
Date: April 23, 1907
Creator: Tiner, John F.
System: The Portal to Texas History
Wire-Winding Device (open access)

Wire-Winding Device

Patent for a wire winding device for repairing wooden bars.
Date: April 23, 1912
Creator: Wilkinson, Charles C.
System: The Portal to Texas History
Insect-Powder Duster (open access)

Insect-Powder Duster

Patent for "a truck mounted upon wheels, to the reat end of which is adjusted a sifter that, as the machine is progressing, will have lateral reciprocating motion imparted thereto and eject powder through an attached meshed screen" (lines 10-15).
Date: April 23, 1889
Creator: Glover, Charles Bazel
System: The Portal to Texas History
Leaf for Books (open access)

Leaf for Books

Patent for certain improvements in leaves for books, specifically hotel registers and similar, that materially prolong the life of the leaf.
Date: April 23, 1918
Creator: Moore, William R.
System: The Portal to Texas History
Wax-Press (open access)

Wax-Press

Patent for a wax press for pressing oil out of wax that does not have to be opened to test the wax or remove it for use.
Date: April 23, 1912
Creator: Hansen, Julius
System: The Portal to Texas History
Vault Cash-Indicator. (open access)

Vault Cash-Indicator.

Patent for a vault cash-indicator meant to "provide a new and improved indicator, designed for indicating an amount of money, commercial articles, &c.; for instance, indicating the amount of money contained in a safe or vault" (lines 7-11).
Date: April 23, 1895
Creator: Hamilton, Samuel R.
System: The Portal to Texas History
Tuning Device for Pianos. (open access)

Tuning Device for Pianos.

Patent for "a means whereby the strings of a piano may be easily and deliberately tuned, and when tuned they will be held absolutely rigid and unyielding under all circumstances while the pins are set in wood, thus avoiding any possibility of the jarring of the parts." (Lines 36-42) Includes instructions and illustrations.
Date: April 23, 1895
Creator: Orser, Levi
System: The Portal to Texas History
Vehicle-Tire (open access)

Vehicle-Tire

Patent for a vehicle tire with improved springs.
Date: April 23, 1912
Creator: Banks, Theodore H.
System: The Portal to Texas History
Improvements in the Concentration and Purification of Sludge Acid (open access)

Improvements in the Concentration and Purification of Sludge Acid

Patent for improvements in the concentration and purification of sludge acid in petroleum refineries.
Date: April 23, 1918
Creator: Slater, William A.
System: The Portal to Texas History
Improvement in Cultivators. (open access)

Improvement in Cultivators.

Patent for improvement in horse-drawn cultivators.
Date: April 23, 1872
Creator: Jordan, Hugh Paxton
System: The Portal to Texas History
Tractor (open access)

Tractor

Patent for "novel features of construction and combinations of parts" in tractors to ensure a steady, even pace of travel and allow for traversing uneven landscape while maintaining a level setting, including illustrations and instructions.
Date: April 23, 1918
Creator: Altgelt, Herman E.
System: The Portal to Texas History
Improvement In Cotton-Gin-Saw Cleaners. (open access)

Improvement In Cotton-Gin-Saw Cleaners.

Patent for "a device for quickly cleaning the saws of cotton-gins when they become gummed. It consists in a series of knives that are supported by a movable bar or frame, and may be thrust between the saws when the saws are to be cleaned (para. 4-5).
Date: April 23, 1878
Creator: Munger, Robert S.
System: The Portal to Texas History