UNT Libraries Government Documents Department - 19 Matching Results

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Aeroplane.

Description: Patent for improved propulsion for airplanes involving propellors in the front and rear of the plane. This aids in regulating air currents to stabilize flight, landing and speed. The patent includes illustrations.
Date: June 12, 1917
Creator: Campbell, John R.
Item Type: Refine your search to only Patent

Clothes-Pin

Description: Patent for clothes pin with illustration attached. This pin was created to allow ease shifting of clothes hanging from the clothe line. Additionally the clothes pin does not pinch the clothes it holds in place.
Date: June 12, 1917
Creator: McKinney, Arthur C.
Item Type: Refine your search to only Patent

Furnace

Description: Patent for "a system of producing heat for kilns, furnaces for burning lime, furnaces for boilers, and similar purposes, and the object is to provide apparatus for consuming all the fuel fed to the furnaces and for pre-heating the air which is fed to the furnaces and for excluding all air which has not been preheated" (lines 8 - 15).
Date: June 12, 1917
Creator: Bone, David R.
Item Type: Refine your search to only Patent

Reel

Description: Patent for an improvement in reels. The reel features improvements in how to attach the end of a film strip to the reel for winding.
Date: June 12, 1917
Creator: Allen, Harry Porter
Item Type: Refine your search to only Patent

Sash Control

Description: Patent for a window sash control system. This mechanism allows the user to open a hard to reach window, such as one at the top of a stairwell, remotely via a series of ropes and pulleys.
Date: June 12, 1917
Creator: Coogle, John David
Item Type: Refine your search to only Patent

Valve

Description: Patent for an automatic valve for use upon hydraulic or suction dredges to prevent sore material such as clay, sand and mud from preventing the efficient use of the dredge sure to the closing of heavy material in the mouth of the dredge. The valve is intended to supply water to flush out the mouth of the dredge.
Date: June 12, 1917
Creator: Miller, Henry L.
Item Type: Refine your search to only Patent
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