UNT Libraries Government Documents Department - 20 Matching Results
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- Automobile-Alarm.
- Patent for a device to prevent the theft of automobiles capable of producing audio and visual signals as warnings of unauthorized access.
- Collar-Form
- Patent for a device that will hold soft shirt collars in position, giving them a neater appearance.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- Automatic Car-Dump
- Patent for automatic dumpers that can be readily and inexpensively fitted and adapted to most forms of dump car.
- 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.
- 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.
- Book or Music Leaf Turner.
- Patent for a music page turner, which can be operated by a lever or foot pedal.
- Letter-Tying Device
- Patent for a package tie. Illustrations included.
- Nut Lock
- Patent for a nut lock. Illustration included.
- Process of Producing Metallic Zinc
- Patent for a process of producing metallic zinc. Illustration included.
- Filtering-Machine
- Patent for a filtering machine which operates centrifugally to filter out solid matter from liquids. Illustrations included.
- 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.
- 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
- Electric-Circuit -Closing Device.
- Patent for certain new and useful improvements in electric circuit closing devices.