UNT Libraries Government Documents Department - 1,005 Matching Results

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Improvement in Speed and Time Recorders.

Description: Patent for improvements in recording instruments to "document of all the movements of a locomotive while in charge of the engineer, to record any stoppages that may be made; the duration of such stoppages, and any backward motion of the locomotive at any point during the trip." (Lines 7-13) Illustration is included.
Date: September 9, 1879
Creator: Richardson, John D.

Improvement in Medical Compounds.

Description: Patent for a medical compound consisting of magnesia, soda, potassium oxide, manganese, sodium chloride, acid phosphate of iron, sulfuric acid, and phosphoric acid. The compound is said to treat a wide variety of ailments.
Date: September 16, 1879
Creator: Coleman, George S.

Improvement in Double-Acting Force-Pumps.

Description: Patent for a double-acting force pump that has "single cylinder and hollow piston-rod operate in connection with the upper and lower cylinder-valves, and with a valved piston adapted to have a reciprocal motion independent of and upon the hollow piston-rod, to discharge the water from both sides of the piston with a double action and in a continuous stream through said hollow piston-rod" (para. 2).
Date: September 16, 1879
Creator: Newman, Charles Elijah

Improvement in Lever-Powers.

Description: Patent for a lever-power which applies "the power and resistance to the lever, so that they will change positions with relation to the fulcrum as the power end of the lever descends" (para. 2). The relation of the lever with the fulcrum is flexible, and allows for increased leverage.
Date: September 23, 1879
Creator: Franklin, Mathew Calhoun

Improvement in Sheet-Metal Hames

Description: Patent for improvement in hames by constructing them of sheet metal in order to prevent flatenning and wear on the hame. Explains how sheet metal hames are also flexibile in many attributes and because of this they are beneficial in many ways. Illustrations provided.
Date: November 4, 1879
Creator: Brown, John S.

Improvement in Fire-Lighters.

Description: Patent for a device which allows the lighting of "fires, lights, blasts, &c., by a person located some distance from the object to be ignited." (lines 7-10) Includes instructions and illustrations.
Date: November 18, 1879
Creator: Craig, Samuel M.

Improvement in Rotary Engines.

Description: Patent for Improvement in Rotary Engines concerning "the arms of the frame" (lines 9), which are powered by steam and "steam valves with arms" (line 17) including a detailed explanation and description of the illustration.
Date: February 5, 1878
Creator: Evens, George

Improvement in Motors.

Description: Patent for power-operated motors used "for operating churns" (lines 13-14), with the option of using spring-power, including a detailed explanation and description of the illustration.
Date: February 19, 1878
Creator: Cummings, James K.
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