UNT Libraries Government Documents Department - 21 Matching Results
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- Apparatus for Molding Hollow Concrete Walls
- Patent for an apparatus that is a mold for crafting hollow concrete walls. Illustration included.
- Axle-Setting Machine
- Patent for a axle setting machine that can be used on any type of axle, has its own lever, and doesn't touch the inside of the axle collar.
- Bed-Robe For Invalids.
- Patent for certain new and useful improvements in bed robes for invalids, including instructions and illustrations.
- Counterbalancing Device for Pumps.
- Patent for a counterbalancing device for windmill pumps, which reduces friction and lateral pull on the pump.
- Equalizing Device for Pump-Rods.
- Patent for an improved equalizing device for pump-rods used in hand or windmill pumps that increases the operating efficiency and decreases the manufacture cost of the device.
- Family Record Keeper
- Patent for a family record keeper that could preserve certificates of birth, marriage, and death, in a manner that would protect them from the elements.
- Hayrick Sheet
- Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:125000
- Ice-Cream Freezer
- Patent for an ice cream freezer that may also be used as an egg beater or a churn. Illustrations included.
- Ice-Tray
- Patent describing a "combined water-cooler and ice tray [...for] the cooling of water by ice without the ice coming in contact with the water" (lines 9-12).
- Jack.
- Patent for a jack for lifting heavy loads on railroads, which has an automatic steady movement of the load up and down without adjusting the jack settings.
- Powder-Ejector
- Patent for a vaginal powder ejector. Illustrations included.
- Pump-Jack.
- Patent for an improved version of "operating pumps and similar apparatus" (lines 8-9).
- Railroad Joint
- Patent for a railroad joint. Illustration included.
- Road Grader and Scraper.
- Patent for a road grader and scraper, which is drawn by a traction engine.
- Spring-Motor
- Patent for a motor used to operate light machinery such as sewing machines using spring power. Illustrations included.
- Tank-Valve.
- Patent for tank-valves in which “a valve may be readily detached for renewal or repairs and adaptable without material change of structure to any of the various forms and structures of tanks manufactured.” (Lines 18-22.) Illustration is included.
- Trap-Gun.
- Patent for a trap gun, which is placed in a trap and fires when bait is disturbed which will only go off when the bait is tampered with and can turn to follow an animals movements in the trap.
- Ventilating Apparatus.
- Patent for a ventilating apparatus "adapted for use in connection with buildings, storehouses, and school and other buildings, both public and private" (lines 9-12).
- Well-Drilling Apparatus.
- Patent for a well drilling apparatus, which is light and strong and easily transported.
- Wheel
- Patent for a vehicle wheel with a rigid frame and a hub that has radical range of motion.
- Windmill
- Patent for a windmill. It turns creating rotary motion, caused by the wind, which is used as a pumping power source.