Pumping-Engine. (open access)

Pumping-Engine.

Patent for a pumping engine that uses a "combined piston rod and plunger acting in the same vertical line and carrying a crank pin box and cross heads for driving the governing fly wheel" (lines 12-15). Mounting and dismounting this engine is simple, and the engine has easily accessible packing ends of the steam and water cylinders. Also, the adjustable yoke is improved in this engine.
Date: April 25, 1893
Creator: Clarkson, William
Object Type: Patent
System: The Portal to Texas History
Swinging Gate. (open access)

Swinging Gate.

Patent for a new and improved swinging gate. This design consists in "[t]he combination, with the main posts . . . [one] having the shallow recesses therein, of hinges, slotted batten, bell-crank lever connected with the upper hinge-bolt, and with a pin in the slot in the batten, spring, gravity-catch, gate, and roller" (lines 29-35).
Date: April 10, 1888
Creator: Sipe, Henry
Object Type: Patent
System: The Portal to Texas History
Washing-Machine. (open access)

Washing-Machine.

Patent for improvements in washing-machines by using a combination of adjustable stationary rubbing-board and a rotary rubbing-cylinder to regulate the pressure on the clothes and at the same time, clothes can be cleaned without injury to them. Illustration is included.
Date: April 7, 1891
Creator: Polk, Kindrick Ford
Object Type: Patent
System: The Portal to Texas History
Shoe for Bridges. (open access)

Shoe for Bridges.

Patent for a new and improved bridge shoe including instructions and illustrations.
Date: April 10, 1894
Creator: Seaman, George S.
Object Type: Patent
System: The Portal to Texas History
Car Coupling. (open access)

Car Coupling.

Patent for a new and improved coupling for railroad cars. This design "relates to car-couplings of that class which effect an automatic coupling by means of a gravity hook; and it consists in certain improvements in the construction and operation of the same" (lines 9-13).
Date: April 24, 1883
Creator: Whiting, Lewis Peck
Object Type: Patent
System: The Portal to Texas History
Texas Attorney General Opinion: WW-411 (open access)

Texas Attorney General Opinion: WW-411

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, Will Wilson, regarding a legal question submitted for clarification: May the Tax Assessor-Collector of Johnson County, acting as an agent for the Board of Fire Commissioners of the Johnson County Rural Fire Prevention District, voluntarily and without emolument, collect the tax provided by law for said Rural Fire Prevention District after being properly authorized to do so by said Board of Fire Commissioners?
Date: April 8, 1958
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Mail Bag Catchers and Deliverer (open access)

Mail Bag Catchers and Deliverer

Patent for a mail bag catcher and deliverer. This invention is designed for the retrieval and delivery of mailbags by passing trains. Illustration included.
Date: April 21, 1908
Creator: Anderson, John
Object Type: Patent
System: The Portal to Texas History
Display-Rack (open access)

Display-Rack

Patent for a display rack.
Date: April 21, 1903
Creator: Wilbanks, William N.
Object Type: Patent
System: The Portal to Texas History
Dental Dam-Holder. (open access)

Dental Dam-Holder.

Patent for improvement in dental dam-holders.
Date: April 17, 1900
Creator: Myers, Samuel M.
Object Type: Patent
System: The Portal to Texas History
Lifting-Jack. (open access)

Lifting-Jack.

Patent for a mechanical device improvements to lift heavy loads or to apply great forces.
Date: April 29, 1913
Creator: Graves, James M.
Object Type: Patent
System: The Portal to Texas History
Occurrence, Availability and Chemical Quality of Ground Water in the Cretaceous Aquifers of North-Central Texas: Volume 1 (open access)

Occurrence, Availability and Chemical Quality of Ground Water in the Cretaceous Aquifers of North-Central Texas: Volume 1

Report on the quality and availability of ground water in the cretaceous aquifers of north-central Texas. Includes maps, hydrographs, rainfall data, pumpage, and more.
Date: April 1982
Creator: Nordstrom, Phillip L.
Object Type: Report
System: The Portal to Texas History
Acetylene-Gas Generator. (open access)

Acetylene-Gas Generator.

Patent for improving acetylene gas generators.
Date: April 1, 1919
Creator: Muse, James A.
Object Type: Patent
System: The Portal to Texas History
Hoeing And Chopping Apparatus. (open access)

Hoeing And Chopping Apparatus.

Patent for an improvement to hoeing and chopping apparatus by a supporting frame that operates transversely and vertically at the same time.
Date: April 8, 1919
Creator: Blankenstein, Richard J.
Object Type: Patent
System: The Portal to Texas History