UNT Libraries Government Documents Department - 82 Matching Results

Search Results

Results: 1 - 24 next

Level-Indicator.

Description: Patent for a new and improved level indicator, intended for use with airplanes and other flying machines to indicate the angle of ascent or descent, as well as when the machine is on a level keel. The level indicator is designed to have a water-tight casing and weatherproof joints and has brackets to secure it to the airplane.
Date: November 5, 1918
Creator: Westbrook, Homer S.
Item Type: Refine your search to only Patent

Pump

Description: Patent for improvements to pumps in working barrels, packing, and packing chambers, the purpose of which is to eliminate easily worn parts and improve the efficiency of these pumps, including illustrations.
Date: November 28, 1922
Creator: Kerr, Michael A.
Item Type: Refine your search to only Patent

Matrix Molding Device.

Description: Patent for improvements on matrix molding devices, "to provide simple devices or improvements in matrices of standard size and adaptation for use in linotype and other line casting machines for preparing the operating edges of printers' slugs for holding cross-rules" (lines 10-15), including illustrations.
Date: November 4, 1918
Creator: Markwell, Andrew E. & Evans, S. C.
Item Type: Refine your search to only Patent

Pumping-Head.

Description: Patent for a pumping head involving two piston rods that are rigid and, if broken, can be replaced without harming the rest of the machine. The patent includes instructions and illustrations.
Date: November 17, 1914
Creator: Boicourt, John L.
Item Type: Refine your search to only Patent

Circuit-Closing Device for Doors.

Description: Patent for a device mounted within a door jamb that closes or breaks a circuit when the door is opened or closed, respectively. The electrical connection can be used to turn on lights when the door is opened and off when closed.
Date: November 4, 1913
Creator: Fitch, William Hubert
Item Type: Refine your search to only Patent

Electric Animal-Prod

Description: Patent for an electric animal prod as a "simple and efficient instrument which may be used for prodding animals without injuring the flesh or hide of the animal" (lines 12-14), including illustrations.
Date: November 2, 1915
Creator: Floyd, William Boyd
Item Type: Refine your search to only Patent

Sash-Holder.

Description: Patent for a builders' hardware used to hold a sash in a closed to the adjacent stile so that the sash cannot be opened from the outside.
Date: November 13, 1917
Creator: Boynton, Amos W.
Item Type: Refine your search to only Patent
Back to Top of Screen