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Adding-Machine.
Patent for an inexpensive, simple, easily operated, and improved registering machine that is meant to add numbers without mistakes. It uses revoluble number wheels and a spring-returned shaft among other materials.
Date:
March 21, 1893
Creator:
Brooks, Augustus J.
Object Type:
Patent
System:
The Portal to Texas History
Texas Attorney General Opinion: DM-469
Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Dan Morales, regarding a legal question submitted for clarification: Whether Government Code section 2258.021 requires Midwestern State University to pay the prevailing wage rate to electricians performing work on Bolin Science Hall, and related questions.
Date:
March 12, 1998
Creator:
Texas. Attorney-General's Office.
Object Type:
Text
System:
The Portal to Texas History
Process of Making Lubricants.
Patent for "an improved process for making a lubricant especially adapted for parts of moving machinery which will be efficient to keep said parts and their bearings cool and which may also be used to cool heated journals and bearings" (lines 11-16).
Date:
March 26, 1901
Creator:
Hudnall, Millard Stewart
Object Type:
Patent
System:
The Portal to Texas History
Automatic Device for Cutting Off the Flow of Ait Through Oil-Pipes
Patent for a device which automatically terminates air flow through an oil pipe by means of a float which travels within the oil pipe.
Date:
March 21, 1916
Creator:
Tucker, Thomas A.
Object Type:
Patent
System:
The Portal to Texas History
Drill-Collar.
Patent for a new design for collars to be used on water-flushed rotary drills, including instructions and illustrations.
Date:
March 16, 1915
Creator:
Myers, George S.
Object Type:
Patent
System:
The Portal to Texas History
Calk Attachment For Horseshoes
Patent for new and useful improvements in calk attachments for horseshoes. The objective is to provide detachable means applicable to the conventional types of shoe without any modifications.
Date:
March 29, 1921
Creator:
Douglas, John Davies
Object Type:
Patent
System:
The Portal to Texas History
Card Holder
Patent for card holders meant to help better display business cards and other forms of advertisement on surfaces such as windows.
Date:
March 4, 1919
Creator:
Hill, L. W.
Object Type:
Patent
System:
The Portal to Texas History
Friction Transmission Mechanism.
Patent for improvements toward friction transmission mechanisms. It would eliminate the use of some gears.
Date:
March 28, 1921
Creator:
McDermott, Henry
Object Type:
Patent
System:
The Portal to Texas History
Vacuum-Regulator for Oil-Pumps.
Patent for vacuum regulator for oil pump. This device is simply constructed and easy to operate. It is an automatic cut-off in the vacuum of the pipe line to the pump.
Date:
March 12, 1918
Creator:
Hobb, James W.
Object Type:
Patent
System:
The Portal to Texas History
Pump
This patent is for pumps. This patent allows for the pump barrel to be readily disengaged from its normal positive engagement with the well tube for removal from said tube for repairs or any other reason.
Date:
March 19, 1918
Creator:
Perry, Sherman V.
Object Type:
Patent
System:
The Portal to Texas History
Toy Aeroplane.
Patent for a new and improved toy airplane to be propelled by the feet and steered by the child seated inside, including illustrations. It "is relatively simple and inexpensive to produce, while also being able to withstand considerable rough handling" (lines 26-28).
Date:
March 15, 1921
Creator:
Paul, Leon R.
Object Type:
Patent
System:
The Portal to Texas History
Power-Transmitting Mechanism.
Patent for an improved power-transmitting mechanism for, "bicycles, motorcycles and similar vehicles whereby rotation is transmitted to the driven wheel without the use of chains, belts, gears or analogous elements commonly employed for this purpose" (lines 14-18). The invention will maximize driving power while minimizing energy expenditure (lines 19-24), employ a propelling mechanism, and reduce manufacturing and repair costs.
Date:
March 11, 1919
Creator:
Grubb, Orin A.
Object Type:
Patent
System:
The Portal to Texas History
Sack-Protector.
Patent for an improvement to sacks, as used in picking berries, to protect the bag from deterioration caused by dragging of the sack on the ground.
Date:
March 4, 1919
Creator:
Roer, William A.
Object Type:
Patent
System:
The Portal to Texas History
Pipe-Tongs
Patent for an improvement on the existing design of pipe tongs, the improvement will allow for one individual to hold the tongs, adjust the size around the pipes, and screw or unscrew the pipe alone. Previous designs required two or three individuals.
Date:
March 9, 1920
Creator:
Hill, Richard Dennie
Object Type:
Patent
System:
The Portal to Texas History