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Hydraulic Classifier. (open access)

Hydraulic Classifier.

Patent for hydraulic classifier for the treatment of ore. The invention subjects settling solid particles to a secondary classification and prevent the contamination of the settling solids before they are discharged.
Date: March 21, 1922
Creator: Allen, Charles
System: The Portal to Texas History
Compound for Destroying Boll-Weevil. (open access)

Compound for Destroying Boll-Weevil.

Patent for a compound for destroying Boll Weevils, consisting of Sulfur, Pine Tar, Asafetida, Pulverized Bluestone, Beaumont Oil, Extract of Tobacco, and a thick adhesive oil.
Date: March 21, 1911
Creator: Armentrout, Richard B.
System: The Portal to Texas History
Improvement in folding tables. (open access)

Improvement in folding tables.

Patent for combination folding tables that fold into a convenient traveling-trunk.
Date: March 21, 1876
Creator: Arnold, James Edwin
System: The Portal to Texas History
Bat-Former (open access)

Bat-Former

Patent for a cotton bat former that produces a bat of uniform size and weight.
Date: March 21, 1911
Creator: Ball, Samuel M.
System: The Portal to Texas History
Ice-Holding Device. (open access)

Ice-Holding Device.

Patent for a device to hold ice upon running-boards of vehicles (lines 10-11.) This device is flexible in use (it can be pulled up to reveal the ice, and put back out of the way), simple in design, and cheap to construct.
Date: March 21, 1922
Creator: Barton, Warren D.
System: The Portal to Texas History
Improvement in Gas-Liquefying Pumps. (open access)

Improvement in Gas-Liquefying Pumps.

Patent for "the construction and arrangement of a pump used in ice-machines for liquefying [sic] the gas" (lines 12-14) including illustrations.
Date: March 21, 1876
Creator: Boyle, James
System: The Portal to Texas History
Adding-Machine. (open access)

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.
System: The Portal to Texas History
Trap (open access)

Trap

Patent for a trap for catching rats. Illustrations included.
Date: March 21, 1911
Creator: Clark, William Joseph
System: The Portal to Texas History
Washing-Machine. (open access)

Washing-Machine.

Patent for an improved washing machine that consists of a sheet-metal body with two tubs, rubbing-boards, a fire-box under the body, bails, and springs with hooks.
Date: March 21, 1893
Creator: Conner, Joshua Harley
System: The Portal to Texas History
Firearm (open access)

Firearm

Patent for an automatic gun which reloads itself.
Date: March 21, 1911
Creator: Consentino, Thomas
System: The Portal to Texas History
Vermin Exterminator for Poultry. (open access)

Vermin Exterminator for Poultry.

Patent for a vermin exterminator for poultry that discharges an insecticide onto the chickens as they come in and out of the chicken house.
Date: March 21, 1911
Creator: Crawford, William Frank
System: The Portal to Texas History
Cotton-Chopper (open access)

Cotton-Chopper

Patent for a cotton chopper that can be used for cultivation.
Date: March 21, 1911
Creator: Crow, Jesse J.
System: The Portal to Texas History
Cotton-Gin Brush. (open access)

Cotton-Gin Brush.

Patent for a gin brush that operates at high speeds with a large diameter. "Centrifugal force exerts a great strain tending to dismember it, and further, if it be not at all times accurately balanced there is a tendency to spring the shaft and cause rattling in the bearings which results in rapid wear and failure to work well" (lines 13-19).
Date: March 21, 1893
Creator: Elam, William E. & Thomas, Robert S.
System: The Portal to Texas History
Hoisting Apparatus. (open access)

Hoisting Apparatus.

Patent for a hoisting apparatus for use in cranes.
Date: March 21, 1911
Creator: Fischer, Fritz, Jr.
System: The Portal to Texas History
Attachment for Wringers and Washing-Machines (open access)

Attachment for Wringers and Washing-Machines

Patent for an attachment for wringers and washing machines that allows the washing machine to be moved directly from the washing tub to the rinsing tub.
Date: March 21, 1911
Creator: Flood, William E.
System: The Portal to Texas History
Churn. (open access)

Churn.

Patent for a simple and inexpensive churn that works efficiently and does not take up much space. It consists of a solid upper portion, a lower portion, a horizontal bar that connects the two, a bracing frame, a shaft, bearings, a band wheel attached to the shaft, an adjustable drive wheel, a crank wheel, and a dasher.
Date: March 21, 1893
Creator: Gibson, Wyatt
System: The Portal to Texas History
Horse Collar Rolling Machine (open access)

Horse Collar Rolling Machine

Patent for horse collar rolling machines. Illustrations included.
Date: March 21, 1905
Creator: Goodman, Forest Eduard
System: The Portal to Texas History
Wagon Bolster Attachment (open access)

Wagon Bolster Attachment

Patent for a wagon bolster attachment. Illustration included.
Date: March 21, 1905
Creator: Goodwin, James A. & Slaughter, George W.
System: The Portal to Texas History
Switching Device (open access)

Switching Device

Patent for a switch throwing device that can be operated from a train car. Illustrations included.
Date: March 21, 1911
Creator: Gordon, Holland F.
System: The Portal to Texas History
Hay-Press. (open access)

Hay-Press.

Patent for an inexpensive, durable, easily-operated, and powerful hay press that packs hay and similar materials. It consists of a baling chamber, a power platform, a stub shaft, a grooveless power wheel, a tire on the upper side of the wheel, a roller, and a draft-pole.
Date: March 21, 1893
Creator: Gressett, Lawrence Franklin
System: The Portal to Texas History
Manual-Training Apparatus. (open access)

Manual-Training Apparatus.

Patent for a new improvement in a manual training apparatus for teaching swimming without water. The device allows the exerciser to lie face down on the provided mat and turn cranks to simulate swimming motions.
Date: March 21, 1916
Creator: Hartnett, William J.
System: The Portal to Texas History
Beehive. (open access)

Beehive.

Patent for a beehive that is meant "to provide for the ready or convenient "robbing" of the hive without subjecting the bees to injury , as experienced in the old way, by smoking the bees out of the hive" (lines 16-20).
Date: March 21, 1893
Creator: Hawkins, Jackson D. & Ray, Francis M.
System: The Portal to Texas History
Plow And Cultivator (open access)

Plow And Cultivator

Patent for a plow and cultivator. Illustration included.
Date: March 21, 1905
Creator: Henderson, Thomas
System: The Portal to Texas History
Air-Cooling Apparatus. (open access)

Air-Cooling Apparatus.

Patent for an air cooling apparatus for air to be delivered into a room treated with moisture to reduce the temperature of the air without the use of ice.
Date: March 21, 1916
Creator: Hollenburger, Joseph
System: The Portal to Texas History