Book or Music Leaf Turner. (open access)

Book or Music Leaf Turner.

Patent for a music page turner, which can be operated by a lever or foot pedal.
Date: October 22, 1907
Creator: Alrich, Henry
Object Type: Patent
System: The Portal to Texas History
Automatic Car-Dump (open access)

Automatic Car-Dump

Patent for automatic dumpers that can be readily and inexpensively fitted and adapted to most forms of dump car.
Date: April 22, 1913
Creator: Putnam, John J.
Object Type: Patent
System: The Portal to Texas History
Automobile-Alarm. (open access)

Automobile-Alarm.

Patent for a device to prevent the theft of automobiles capable of producing audio and visual signals as warnings of unauthorized access.
Date: April 22, 1919
Creator: Smith, Thomas H.
Object Type: Patent
System: The Portal to Texas History
Collar-Form (open access)

Collar-Form

Patent for a device that will hold soft shirt collars in position, giving them a neater appearance.
Date: July 22, 1919
Creator: White, William D.
Object Type: Patent
System: The Portal to Texas History
85th Texas Legislature, Regular Session, Senate Bill 1246, Chapter 52 (open access)

85th Texas Legislature, Regular Session, Senate Bill 1246, Chapter 52

Bill introduced by the Texas Senate relating to the salary of a bailiff in El Paso County.
Date: May 22, 2017
Creator: Texas. Legislature. Senate.
Object Type: Legislative Document
System: The Portal to Texas History
Automatic Separating Device. (open access)

Automatic Separating Device.

Patent for an automatic separating device. This device operates with a link that connects the float level at the top of the tank with a valve handle at the bottom of the tank to control discharge from the tank.
Date: January 22, 1918
Creator: Allen, Charles
Object Type: Patent
System: The Portal to Texas History
Automatic Density-Indicator for Slime-Pulp Separators. (open access)

Automatic Density-Indicator for Slime-Pulp Separators.

Patent for devices that thickens slimes for ore milling operations in which it will indicate the density and regulate it so it will not go below a predetermined value.
Date: June 22, 1920
Creator: Allen, Charles
Object Type: Patent
System: The Portal to Texas History
Process for Converting Sodium Sulfate to Sodium Sulfid. (open access)

Process for Converting Sodium Sulfate to Sodium Sulfid.

Patent for converting sodium sulfate to sodium sulfid, it is a process conversion of chemical compounds sodium sulfate to sodium sulfid.
Date: November 22, 1921
Creator: Anderson, Robert James
Object Type: Patent
System: The Portal to Texas History
Locking Device for Steering-Wheels. (open access)

Locking Device for Steering-Wheels.

Patent for a new and improved locking device for steering wheels that secures the front axle of an automobile at an angle to prevent unauthorized movement beyond a small circle or curve, including illustrations.
Date: August 22, 1916
Creator: Coleman, Oscar F.
Object Type: Patent
System: The Portal to Texas History
Letter-Tying Device (open access)

Letter-Tying Device

Patent for a package tie. Illustrations included.
Date: June 22, 1909
Creator: Greenwood, Bluford Preston
Object Type: Patent
System: The Portal to Texas History
Paper-Guide. (open access)

Paper-Guide.

Patent for a Paper-Guide that can be folded, when it is not in service position, to allow it to be covered by the typewriting machine it is attached to. The patent includes illustrations.
Date: July 22, 1913
Creator: Davis, Alice Urilla
Object Type: Patent
System: The Portal to Texas History
Nut Lock (open access)

Nut Lock

Patent for a nut lock. Illustration included.
Date: January 22, 1907
Creator: Hodges, Amos J.
Object Type: Patent
System: The Portal to Texas History
Process of Producing Metallic Zinc (open access)

Process of Producing Metallic Zinc

Patent for a process of producing metallic zinc. Illustration included.
Date: November 22, 1910
Creator: Dawson, Oliver B.
Object Type: Patent
System: The Portal to Texas History
Process of Leaching Copper Ores (open access)

Process of Leaching Copper Ores

Patent for "a method of recovering copper by the electrolysis of copper solutions of any suitable kind, obtained by the lixiviation of the ore" (lines 9-12). The improvement in this method is that almost all the sulfuric acid and other leaching agents are used up prior to the copper going to the electrolysis tanks which increases the amount of copper recovered and the reduction of accumulated biproducts.
Date: October 22, 1918
Creator: Hahn, Albert W.
Object Type: Patent
System: The Portal to Texas History
Filtering-Machine (open access)

Filtering-Machine

Patent for a filtering machine which operates centrifugally to filter out solid matter from liquids. Illustrations included.
Date: June 22, 1909
Creator: Wilder, Richardson Timothy
Object Type: Patent
System: The Portal to Texas History
Film-Winder for Cameras. (open access)

Film-Winder for Cameras.

Patent for a film-winder for cameras. This particular film-winder is designed so that the exact required amount of film is placed upon the lens of the camera.
Date: May 22, 1917
Creator: Mansfield, Clarence H.
Object Type: Patent
System: The Portal to Texas History
Fiber Cleaning Machine (open access)

Fiber Cleaning Machine

Patent for a machine for removing the bark or husk and pulp from fibrous plants. This machine promises to be smaller and more efficient than earlier models.
Date: August 22, 1911
Creator: Vaughn, Henry L.
Object Type: Patent
System: The Portal to Texas History
Sash Lock and Lift (open access)

Sash Lock and Lift

Patent for sash lock and lift that "relates to improvements in devices for operating window-sashes, and especially provides an improved means for operating the upper sash and locking the same securely in any desired position with respect to the lower sash, thus obviating the necessity for reaching up for the upper sash when it is desired to raise or lower the same or to lock it in open position for the purpose of ventilation" (lines 12-21) including instructions and illustrations
Date: October 22, 1901
Creator: Schairer, John Jacob
Object Type: Patent
System: The Portal to Texas History
Piston (open access)

Piston

The Patent for an improved piston to be used in connection with the cylinders of air brakes. The improvement involves making the removal and replacement of worn out packing material easier.
Date: July 22, 1913
Creator: King, Herbert G.
Object Type: Patent
System: The Portal to Texas History
Electric-Circuit -Closing Device. (open access)

Electric-Circuit -Closing Device.

Patent for certain new and useful improvements in electric circuit closing devices.
Date: March 22, 1898
Creator: Newman, George
Object Type: Patent
System: The Portal to Texas History