UNT Libraries Government Documents Department - 20 Matching Results

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Locking and Operating System for Jail-Doors.

Description: Patent for a new way to operate and lock jail doors "whereby each and every door in the system can be locked, unlocked and operated altogether, or any one, two or more doors can be locked, unlocked and operated without disturbing the other doors of the system" (lines 11-16), including illustrations.
Date: June 11, 1918
Creator: Youngblood, David Franklin
Item Type: Refine your search to only Patent

Lawn-Sprinkler.

Description: Patent for an inexpensive lawn sprinkler that serves the dual purpose of connecting to a hose to spread the water over a broad area and of holding a hose stationary to water a single area.
Date: December 11, 1917
Creator: Schneider, Gustav H.
Item Type: Refine your search to only Patent

Signal.

Description: Patent for an improved signal for a vehicle that is operable by the driver from their seat, to signal whether they are turning, going straight, backing up, or stopping, and can be attached to any vehicle, including instructions and illustrations.
Date: September 11, 1917
Creator: Chaffin, William
Item Type: Refine your search to only Patent

Clock.

Description: Patent for an improved alarm clock with two different alarms that sound at desired time set and when the clock is unwound, including illustrations.
Date: April 11, 1916
Creator: Buttigieg, John
Item Type: Refine your search to only Patent

Machine for Clamping and Nailing Boards.

Description: Patent for a "machine whereby boards for floors, ceiling or sheathing may be forced into place and into contact with previously nailed boards without damage and held clamped into position until nails can be driven into the boards and into the joints" (lines 29-34), with illustrations.
Date: April 11, 1916
Creator: Binger, Nickolaus
Item Type: Refine your search to only Patent

Railroad-Tie.

Description: Patent for "improvements in railroad ties [...] which will prevent the rail from spreading, sinking, or creeping" (lines 13-16). It also "is the provision of a tie in which the resilient qualities of the old type of wood tie are retained and combined with the advantages which are present in the use of a metallic tie" (lines 17-21), including illustrations.
Date: April 11, 1916
Creator: Shearer, Frederick C.
Item Type: Refine your search to only Patent

Race-Track

Description: Patent for a dog race track where an artificial animal is chased by the dogs which then disappears underground at the end of its cable.
Date: February 11, 1913
Creator: Everett, Percy
Item Type: Refine your search to only Patent
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