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Notes on Longitudinal Stability and Balance
Report detailing studies of longitudinal stability and balance on five airplanes: the JN4H, DH4, VE7, USAC-11, and Martin Transport. The methods of measurement, methods of correcting instability, and potential modifications for the elevator of the planes is described.
Date:
April 1920
Creator:
Warner, E. P.
Object Type:
Report
System:
The UNT Digital Library
Educational Agencies in Mining Communities
Report on the importance of industrial education in the mining sector. It explains general education and facilities for specialized education for proficiency in a given field.
Date:
April 1920
Creator:
Read, Thomas Thornton, 1880-1947
Object Type:
Report
System:
The UNT Digital Library
Bottle-Holder.
Patent for an ink bottle holder that allows for sturdy tilting and prevents ink from spilling.
Date:
April 27, 1920
Creator:
Smith, Edwin Ruthven
Object Type:
Patent
System:
The Portal to Texas History
Cotton-Chopping Machine
Patent for a cotton "wheeled cultivator" (line 14-15) attachment which allows users to make adjustments to the cultivator blades, including illustrations.
Date:
April 13, 1920
Creator:
Sims, James G.
Object Type:
Patent
System:
The Portal to Texas History
Combined Adding and Listing Machine.
Patent for new improvements on combined adding and listing machines simplifying and economizing construction and facilitating, "rapidity of operation" (lines14-15). Improvements include: "causing the keys to act directly as stops for the adding wheel section; to provide novel accumulator mechanism...[with] a novel actuator; to provide a novel construction or sector-control bar; to provide a novel key-bar for operating...; to provide novel means for restoring the accumulator to normal; to provide stop mechanism to permit the carryovers of the accumulator...;to provide novel means for restoring the sectors to normal; to provide improved means for holding the accumulator in operative or inoperative position...; to provide novel means for connecting the accumulator sectors with the type sectors; 5o provide novel means for connecting the accumulator sectors with the type sectors; to provide novel means for actuating the hammer and paper feed mechanism; to provide improved general-error key mechanism; to provide an improved construction and operation of key-bar and sector-control bar; to permit of the operation of elimination" (lines 15-46).
Date:
April 20, 1920
Creator:
McCaleb, Walter F.
Object Type:
Patent
System:
The Portal to Texas History
Bottle-Filling Device.
Patent for filling bottles with "two liquids and introducing them into the bottle at the same time under pressure" (lines 17-18), specifically for "carbonated beverages" (lines 12-13).
Date:
April 6, 1920
Creator:
Dannelley, Dillon C.
Object Type:
Patent
System:
The Portal to Texas History
Valve-Lifter
Patent for an improved device that can be applied to a valve spring plate without losing grip.
Date:
April 8, 1920
Creator:
Chaney, Robert
Object Type:
Patent
System:
The Portal to Texas History
Adjustable Footrest.
Patent for an improved, adjustable foot rest that allows for more adjustments and range of motion "to any desired position for the comfort of the user" (lines 13-14), and is secured to the floor.
Date:
April 20, 1920
Creator:
Kingsford, Walter E.
Object Type:
Patent
System:
The Portal to Texas History
Book-Holding Device
Patent for a book-holding device that will keep books open by holding back turned pages, with illustrations.
Date:
April 20, 1920
Creator:
Barry, David Redmond
Object Type:
Patent
System:
The Portal to Texas History
Automobile-Windlass
Patent for improved windlass for an automobile that attaches to both rear wheels to prevent idling
Date:
April 20, 1920
Creator:
Davis, Marion A.
Object Type:
Patent
System:
The Portal to Texas History
Wrench.
Patent for a wrench specifically made to remove well drill bits from the drill.
Date:
April 13, 1920
Creator:
Stover, Willard L.
Object Type:
Patent
System:
The Portal to Texas History
Lens-Holder.
Patent for a lens holder meant to provide a "simple, relatively inexpensive and efficient means" (line 10) of securing the lens in the headlamps of an automobile or similar lamp casing.
Date:
April 13, 1920
Creator:
Marshall, Stanley G.
Object Type:
Patent
System:
The Portal to Texas History
Truss.
Patent for an "improved truss or abdominal belt" (lines 40-41) that provides a simple design with added pads.
Date:
April 7, 1920
Creator:
Buckley, James William
Object Type:
Patent
System:
The Portal to Texas History
Wire-Fence Shield.
Patent for a tool to cover a portion of barbed wire fence allowing one to cross over or through without harm, composed of three or more telescoping metal tubes.
Date:
April 6, 1920
Creator:
Davis, Marion L.
Object Type:
Patent
System:
The Portal to Texas History
Windmill-Gearing
Patent for improved windmill gearing, intended to reduce stain on the machinery
Date:
April 13, 1920
Creator:
Roberts, George W.
Object Type:
Patent
System:
The Portal to Texas History
Well-Packer.
Patent for an improved well drilling device called a "packer", in which this version has a reduced likelihood of the seals between separate parts being damaged and needing replacement.
Date:
April 13, 1920
Creator:
Fletcher, Harold W.
Object Type:
Patent
System:
The Portal to Texas History
Wrench
Patent for an improvement to wrenches. This wrench uses a sliding jaw system for increased utility.
Date:
April 29, 1920
Creator:
Grogan, Edward W.
Object Type:
Patent
System:
The Portal to Texas History
Price-Tag.
Patent for an improved price tag that includes not only the price information, but also "at a glance a stock record and a cost record and provides space for making notations and writing other information" (lines 13-16) for the use of a store clerk's reference.
Date:
April 20, 1920
Creator:
Bedinger, Singleton B.
Object Type:
Patent
System:
The Portal to Texas History
Hydrocarbon-Burner
Patent for an improved hydrocarbon burner, including illustrations.
Date:
April 6, 1920
Creator:
Critchett, James C.
Object Type:
Patent
System:
The Portal to Texas History
Spear
Patent for a spear that is used to help withdraw or remove pipes that may get stuck in wellbores.
Date:
April 20, 1920
Creator:
Gray, Ellsworth
Object Type:
Patent
System:
The Portal to Texas History
Method of Stretching and Securing Wire.
Patent for a "new method of stretching and securing wire" (line 6).
Date:
April 27, 1920
Creator:
Coulter, Thomas H.
Object Type:
Patent
System:
The Portal to Texas History
Pump
Patent for an improvement on the design of pumps used in the oil industry. This uses a combination of water, sand, grits, and other sediments for deep wells.
Date:
April 23, 1920
Creator:
Scott, Floyd L.
Object Type:
Patent
System:
The Portal to Texas History
Torch or Burner
Patent for a torch or burner for use in burning brush or foliage, which uses a pressure-controlled liquid fuel tank that maintains a steady flow of fuel at the correct pressure.
Date:
April 27, 1920
Creator:
Hardt, Benjiman F. & Taylor, Samuel T.
Object Type:
Patent
System:
The Portal to Texas History
Pump.
Patent for a pump specifically designed for oil wells to make drilling oil more efficient, lucrative, and easier to perform.
Date:
April 13, 1920
Creator:
Carden, David A.
Object Type:
Patent
System:
The Portal to Texas History