36 Matching Results

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Gradometer. (open access)

Gradometer.

Patent for a gradometer "which will accurately indicate under the most varying and unstable conditions the inclination and declination at which any moving body is traveling" (lines 10-13). The gradometer is "particularly adapted for use on motor vehicles" (lines 15-16).
Date: May 17, 1921
Creator: Hall, Sidney Wilson
System: The Portal to Texas History
Adjustable Split Lock-Nut or Union. (open access)

Adjustable Split Lock-Nut or Union.

Patent for an affordable and efficient coupling device for use "on valve rods of internal combustion engines, especially those used in automobiles and aeroplanes or on those motors or engines employing overhead valves and whereby the union or coupling may be readily and securely locked on a valve rod with sufficient resistance to withstand the strain of direct pressure" (lines 14-21).
Date: August 17, 1920
Creator: Dickinson, Harry E.
System: The Portal to Texas History
Electrical Testing Device. (open access)

Electrical Testing Device.

Patent for new and useful improvements in electrical testing devices. The invention provides references to innovative changes that allow for improved high-tension coil and armature testing.
Date: August 17, 1920
Creator: Bierbower, Richard C.
System: The Portal to Texas History
Electrical Testing Device (open access)

Electrical Testing Device

Patent for a device to test electrical circuits for faults which is cheaper to manufacture, easier to use, smaller and more durable.
Date: August 17, 1920
Creator: Bierbower, Richard C.
System: The Portal to Texas History
Roller-Distributor. (open access)

Roller-Distributor.

Patent for the invention of a roller distributor, or roller cam, that can "provide novel means whereby friction will be reduced" (lines 12-13) through the use of "a novel spring means being employed" (lines 13-14) in certain affordable, widely used vehicles.
Date: August 17, 1920
Creator: Lopez, Bruno
System: The Portal to Texas History
Piston Ring (open access)

Piston Ring

Patent for improvements to piston rings to reduce leakage through piston grooves, rings, and joints.
Date: April 17, 1920
Creator: Olsen, Jens J. & Edwards, Lewis E.
System: The Portal to Texas History
Separator for Secondary Batteries. (open access)

Separator for Secondary Batteries.

Patent for separators, made of celluloid or similar material, designed to separate secondary or storage batteries in an efficient and affordable way.
Date: February 17, 1920
Creator: Luthy, Josesph O.
System: The Portal to Texas History
Tube-Expander (open access)

Tube-Expander

Patent for a tube expander for setting boiler tubes in the holes in the tube-sheet, which provides simplicity and improvement of its construction.
Date: June 17, 1919
Creator: Walsh, Emmet
System: The Portal to Texas History
Door Controlled Electric Switch (open access)

Door Controlled Electric Switch

Patent for an improved switch attachment that will allow a room, vault, or compartment to be kept lighted when door is open or closed, but may also be shut off when leaving the room.
Date: October 17, 1916
Creator: Kreter, Otto
System: The Portal to Texas History
Lock for Automobiles (open access)

Lock for Automobiles

Patent for Lock for Automobiles
Date: October 17, 1916
Creator: Harris, Robert M. & Wade, Milton V.
System: The Portal to Texas History
Combination Tie and Rail-Joint (open access)

Combination Tie and Rail-Joint

Patent for improvement in the safety of tie and rail-joints. Improves the connection so that independent movement of the tie and rail is reduced.
Date: November 17, 1914
Creator: Knaus, John J.
System: The Portal to Texas History
Permutation-Lock. (open access)

Permutation-Lock.

Patent for a device of a permutation lock. One of its objects is to improve the permutation mechanism thereof and to provide novel means whereby the combination of the lock may be changed.
Date: November 17, 1914
Creator: Meepos, Max
System: The Portal to Texas History
Transplanter (open access)

Transplanter

Patent for a transplanter to move a rooted cotton plant and the soil around it to a different location. Illustrations included.
Date: September 17, 1912
Creator: Matthews, James T.
System: The Portal to Texas History
Attachment for Automobiles (open access)

Attachment for Automobiles

Patent for a spring motor attachment for automobiles.
Date: January 17, 1911
Creator: Carroll, Houston M.
System: The Portal to Texas History
Cage or Support for Well-Tubing (open access)

Cage or Support for Well-Tubing

Patent for a well tubing cage which provides support for well tubes so that a second pipe is not required. Illustrations included.
Date: January 17, 1911
Creator: Harpham, Harry C.
System: The Portal to Texas History
Aeroplane (open access)

Aeroplane

Patent for Aeroplane. This flying machine will automatically return to normal horizontal position if tilted.
Date: September 17, 1909
Creator: MacManus, Agustus, F.
System: The Portal to Texas History
Lawn-Rocker. (open access)

Lawn-Rocker.

Patent for a lawn rocker improvement that provides swing and is durable and inexpensive.
Date: July 17, 1906
Creator: Coffy, Ida May
System: The Portal to Texas History
Phonograph-Machine. (open access)

Phonograph-Machine.

Patent for a new phonograph machine with improvements of sound-box-transversing mechanisms and uniformity of movements, including illustrations.
Date: April 17, 1906
Creator: Dubinski, Benjamin.
System: The Portal to Texas History
Fire Box (open access)

Fire Box

Patent for a fire box. Illustration included.
Date: January 17, 1905
Creator: Butcher, George W.
System: The Portal to Texas History
Automatic Railway Switch Lock (open access)

Automatic Railway Switch Lock

Patent for an automatic railway switch lock. Illustration included.
Date: May 17, 1904
Creator: Sulfer, Charles
System: The Portal to Texas History
Well-Boring Machine. (open access)

Well-Boring Machine.

Patent for improved mechanism of well-boring machine in which it “composed of as few parts as possible, which will effectively grip and rotate a drill-rod or pipe containing coupling and reducing - nipples, or composed of length or sections of varying diameters without impeding the end movement or deranging the central position of said drill-rod or pipe, and without delaying the progress of the machine, to adjust or change any part or parts thereof, also to improve the means for gripping the drill-rod or pipe and to eliminate the tendency to split or longitudinally furrow the latter, which would render the same liable to open and twist off when subject to high pressure during the progress of boring.” (Lines 20-34) Illustration is included.
Date: June 17, 1902
Creator: Woods, Frank J.
System: The Portal to Texas History
Automatic Telephone-Directory. (open access)

Automatic Telephone-Directory.

Patent for a new and useful automatic telephone directory, including instructions and illustrations.
Date: October 17, 1899
Creator: Neuendorff, John B.
System: The Portal to Texas History
Ball-Bearing. (open access)

Ball-Bearing.

Patent for a new and useful ball bearing, including instructions and illustrations.
Date: October 17, 1899
Creator: Millen, George
System: The Portal to Texas History
Apparatus for Dispensing Oil, &c. (open access)

Apparatus for Dispensing Oil, &c.

Patent for a new and useful apparatus for dispensing oil, &c.
Date: May 17, 1898
Creator: Haye, August
System: The Portal to Texas History