UNT Libraries Government Documents Department - 9 Matching Results

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Valve Mechanism For Steam Engines

Description: Patent for useful improvements to the valve mechanism for steam engines. The invention allows an improved means for actuating the slide valve without the use of eccentrics. The valve can also be operated into closed positions at various degrees, and also to reverse the direction of travel of the valve.
Date: June 9, 1914
Creator: Wright, Ed W.

Ice-Chamber for Refrigerators.

Description: Patent for an ice chamber for refrigerators, which decreases the amount of ice needed to keep the refrigerator cool and circulates the air better.
Date: June 1, 1909
Creator: Carter, William H.


Description: Patent for an invention that can be applied to a mantel, consisting "essentially, of a flexible screen, guard, or shield adapted to wind upon a roller, the latter being housed in the space formed between the shelf off the mantel and the headboard" (lines 22-25). It is intended to prevent fire from getting into the from from the fire, control heat radiation, and provide a closure for the fireplace when it is not in use.
Date: September 30, 1899
Creator: Cox, Thomas J.


Description: Patent for fireplace guards that connect to mantels, which can be folded out of sight, or rolled out to prevent sparks or closing off the fireplace when not in use.
Date: March 7, 1899
Creator: Cox, Thomas J.

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


Description: Patent for "improvements whereby the sparks from a locomotive will be passed directly from the flues through the stack and the outer air will be admitted, which will keep the cinders in motion and force them through fine perforations and against the hard surfaces until they are thoroughly pulverized and all the fire therein is extinguished, and which .will thereby prevent the danger to combustible products by fire thrown from an engine and which will not in any way decrease or interfere with the efficient work of the locomotive" (lines 17-29).
Date: June 28, 1892
Creator: Curran, John William

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 hull" (lines 22-31).
Date: June 16, 1885
Creator: Dwyer, Daniel

Improvement in Plows.

Description: Patent to improve the construction of the mold-board of the plow described in Letters Patent No. 163,352, "to make it more effective in preventing the black lands of Texas and other sticky and waxy soils from adhering to it, and to enable a proper furrow to be turned, however sticky and waxy the soil may be." (Lines 17-22) Includes instructions and illustrations.
Date: June 20, 1876
Creator: Bell, Francis R.

Boiler Washing Machine.

Description: Patent for "Improved Washing Machine" in combination with a boiler, "and with a furnace on which the boiler rests".
Date: June 28, 1870
Creator: Cottingham, Gideon W.