UNT Libraries Government Documents Department - 17 Matching Results

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Flying-Machine

Description: Patent for a flying machine with rotating feathered wings and propellers with an included emergency parachute like apparatus for landing the machine safely in case of malfunction.
Date: September 24, 1912
Creator: Hardgrave, Henry
Item Type: Refine your search to only Patent

Grapple

Description: Patent for grapple for use with wells. This invention is designed to grip objects inside of drilled wells. Illustration included.
Date: October 2, 1906
Creator: Williams, Frank S.
Item Type: Refine your search to only Patent

Plug for Lubricator-Cups.

Description: Patent for a lubricator cup and plug system typically used with rods and crank pins. The improvements prevent plug loss and alter the cup to be “readily placed in position or removed therefrom and the plug can be adjusted as required” (lines15-18). Includes illustrations and detailed part description.
Date: November 24, 1908
Creator: McDonald, Al
Item Type: Refine your search to only Patent

Pump.

Description: Patent for "improvements in pumps which move a long column of water with each stroke but discharge a relatively small quantity" (lines 10-13) including instructions and illustrations.
Date: May 16, 1911
Creator: Kangas, Frank Oskar
Item Type: Refine your search to only Patent

Seat Arrangement for Automobiles.

Description: Patent for the arrangement of the seats in a vehicle, allowing the adjustment of several upright seats into a single bed-like formation, "either for sleeping purposes or for ambulance purposes" (lines 16-17).
Date: July 20, 1915
Creator: Cornwell, William O., Jr.
Item Type: Refine your search to only Patent

Trap.

Description: Patent for a new type of animal trap with a rotating cylinder that projects the animal into the trap itself when depressed.
Date: November 23, 1915
Creator: Webster, Joseph R.
Item Type: Refine your search to only Patent
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