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NACA Technical Memorandums
43
NACA Technical Notes
28
Farmers' bulletin (United States. Department of Agriculture)
12
NACA Aircraft Circulars
11
NACA Technical Reports
11
Farmers' bulletin (United States. Dept. of Agriculture)
5
United States Bureau of Mines Reports
4
National Bureau of Standards Reports
3
Annual Report of the Boy Scouts of America
2
House document (United States. Congress. House)
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249 Matching Results
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Holder for Dental X-Ray Films.
Patent for dental X-Ray holders that securely hold the film in place and categorize the X-Rays into series that comprise views of the whole mouth.
Date:
May 17, 1921
Creator:
Martin, James Madison
Object Type:
Patent
System:
The Portal to Texas History
Maize-Header.
Patent for simple and efficient maize header which is easy to operate by positioning it in a way that it needs minimum effort to operate.
Date:
May 17, 1921
Creator:
Jordan, Andrew P.
Object Type:
Patent
System:
The Portal to Texas History
Plastic Base for Poles.
Patent for a plastic base for poles which aims to lengthen the life of the average pole and enable the use of poles of shorter lengths.
Date:
May 17, 1921
Creator:
Hoyle, Millard F.
Object Type:
Patent
System:
The Portal to Texas History
Steering Attachment.
Patent for a steering attachment that keeps the steering wheels of a motor driven vehicle straight. This device is simple and relatively inexpensive, among other advantages.
Date:
May 17, 1921
Creator:
Huffman, Orla L.
Object Type:
Patent
System:
The Portal to Texas History
Toupee and Wig Retainer
A patent for a single-sided adhesive that holds a toupee or wig in place on the scalp without causing built-up residue to adhere to the wig.
Date:
May 17, 1921
Creator:
Tapscott, John Christoper
Object Type:
Patent
System:
The Portal to Texas History
Washing-Machine.
Patent for a mechanized dolly to improve washing machine functionality and efficiency.
Date:
May 17, 1921
Creator:
Huffman, Orla L.
Object Type:
Patent
System:
The Portal to Texas History
Wheel-Operated Lift Mechanism
Patent for a wheel operated lift mechanism designed for agricultural implements with wheels which can raise the frame of the agricultural implement for easy access to the wheel. This tool is adjustable to raise or lower the frame for easy access to the wheel to disconnect it.
Date:
May 17, 1921
Creator:
Altgelt, Herman E.
Object Type:
Patent
System:
The Portal to Texas History
Adjustable Friction-Grab for Fishing-Tools.
Patent for friction grabs for fishing tools in well drilling operations that can be "easily adjusted for different sized holes or wells and which will be automatically adjusted and the grabs automatically closed on the object to be removed" (lines 14-17).
Date:
May 24, 1921
Creator:
Dickson, Lawrence E.
Object Type:
Patent
System:
The Portal to Texas History
Amusement Device.
Patent for a Ferris wheel in which the passenger cars rotate horizontally in addition to rotating vertically with the direction of the main wheel.
Date:
May 24, 1921
Creator:
Lindamood, Roy S.
Object Type:
Patent
System:
The Portal to Texas History
Automatic Air and Gas Relief Valve for Oil-Distributing Systems.
Patent for an air and gas relief valve for oil piping systems that improves upon the need for pumps to get rid of the accumulation of air and gas before pumping oil, with illustrations.
Date:
May 24, 1921
Creator:
Mobley, Henry Grady
Object Type:
Patent
System:
The Portal to Texas History
Condenser for Cotton-Presses.
Patent for "Improvements in Condensers for Cotton-Presses," (lines 6-7) including illustrations. The invention is designed with cotton bale presses in mind, specifically the "condenser or bat forming device" (line 11).
Date:
May 24, 1921
Creator:
Taft, John A.
Object Type:
Patent
System:
The Portal to Texas History
Coupling.
Patent for a coupling to be used by military vehicles, unique in its "simplicity, rapidity in attachment and detachment, strength and durability" (lines 19-21).
Date:
May 24, 1921
Creator:
Speece, Russell. W.
Object Type:
Patent
System:
The Portal to Texas History
Hydraulic Swivel.
Patent for a hydraulic swivel which may be used for well drilling, has an inlet at the side, and is designed to be in few parts for reduced packaging.
Date:
May 24, 1921
Creator:
King, Walter E.
Object Type:
Patent
System:
The Portal to Texas History
Metal-Coating Composition.
Patent for a metal coating composition to form a protective coating on metals and steel to prevent rust and corrosion.
Date:
May 24, 1921
Creator:
Ethridge, Thomas Jefferson
Object Type:
Patent
System:
The Portal to Texas History
Non-Skid Device
Patent for a device that affixes to automobile wheels to provide tire traction and prevent skidding.
Date:
May 24, 1921
Creator:
Williams, Harry S.
Object Type:
Patent
System:
The Portal to Texas History
Sample-Taking Device.
Patent for a sample-taking device to be used in well-drilling processes, which is unique in its simple construction, low manufacturing costs, and ease of use.
Date:
May 24, 1921
Creator:
Christian, Walton G.
Object Type:
Patent
System:
The Portal to Texas History
Tractor.
Patent for a tractor in which the placement of the power source reduces dead weight and provides a low center of gravity, thereby increasing stability.
Date:
May 24, 1921
Creator:
Martin, John J.
Object Type:
Patent
System:
The Portal to Texas History
Fluid-Conditioning Apparatus.
Patent for an air conditioning apparatus that provides "new and improved means for moistening and cooling air," including the "collection and accumulation" of the cooling fluid (lines 10-12).
Date:
May 31, 1921
Creator:
Lindauer, William A.
Object Type:
Patent
System:
The Portal to Texas History
Flytrap.
Patent for a "new and improved fly trap arranged to insure [sic] a proper transfer of the flies or other insects" in such a way that the trap bait is preserved for repeated use (lines 14-16).
Date:
May 31, 1921
Creator:
Wallace, William Simpson
Object Type:
Patent
System:
The Portal to Texas History
Oil Pump
Patent for an oil pump that may be attached to a barrel or container and dispense liquid in predetermined quantities.
Date:
May 31, 1921
Creator:
Hughes, Stanley R.
Object Type:
Patent
System:
The Portal to Texas History
Pneumatic Tire.
Patent for improved pneumatic tires for motor vehicles that will prevent deflation when punctured.
Date:
May 31, 1921
Creator:
Williams, Harry S.
Object Type:
Patent
System:
The Portal to Texas History
Power-Transmitting Means
Patent for improving power-transmitting means. The patent reduces the ratio of rotary to reciprocatory movement, with illustrations.
Date:
May 31, 1921
Creator:
Benson, Madison H.
Object Type:
Patent
System:
The Portal to Texas History
Sectional Rim
Patent for a sectional rim, which provides a sectional demountable tire rim with interlocking means to easily actuate and separate so that the tire can be removed from or applied to the rim.
Date:
May 31, 1921
Creator:
Williams, Harry S.
Object Type:
Patent
System:
The Portal to Texas History
Stock-Chute for Dipping-Vats.
Patent for new improvements that allow for easier transition of animals from a stock-chute into a dipping vat because the "animal will overcome the effect of the counterbalancing weight and will cause the discharge end of the chute to move downwardly precipitating the animal into the vat or trough" (lines 20-26) including instructions and illustrations.
Date:
May 31, 1921
Creator:
Burt, Clement P.
Object Type:
Patent
System:
The Portal to Texas History