UNT Libraries Government Documents Department - 455 Matching Results

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Rotary-Engine.

Description: Patent for a new and improved rotary engine. This design consists "of a wheel provided with radially-sliding pistons and revolving within a fixed circumferential steam-chest, and having fixed on its axle an eccentric and spring, that operate to throw the pistons or floats outward to receive the pressure of the steam or other motor that is to drive the engine" (lines 19-26).
Date: January 20, 1880
Creator: Adams, James Ansley
Item Type: Refine your search to only Patent

Underscoring Attachment for Type-Writers.

Description: Patent for an improvement on an underscoring attachment for type writers that allows the user to use the functions of underscoring, correcting, and cancelling characters as they type, allowing some functions to occur simultaneously, including instructions and illustrations.
Date: July 17, 1917
Creator: Aiton, Fred
Item Type: Refine your search to only Patent

Book-Support.

Description: Patent for a book-support made to hold large, heavy books used in commercial and government offices. The platforms can be moved up and down by a crank on the side of the support.
Date: January 19, 1897
Creator: Barnes, William A.
Item Type: Refine your search to only Patent

Animal Shears.

Description: Patent for new and improved animal shears. This design consists in "mechanism for imparting a combined reciprocating and edgewise play to the cutting knife or knives in order to cause the teeth of said knife or knives to follow or describe a curved or oval path, and thus insure greater efficiency of operation; to provide for the proper lateral contact of the knives in order to insure their proper action and to regulate the pressure or force with which one knife bears on the other; [and] to prov… more
Date: February 11, 1890
Creator: Bechtol, William S. & Bessonette, William T.
Item Type: Refine your search to only Patent

Railway-Switch Stand.

Description: Patent for a railway switch stand that locks "a switch of this class and from which the lock cannot be removed except when the switch is fully locked, thus obviating accidents by always insuring a locked condition of the switch after operation and thereby preventing the switch from being subsequently actuated by unauthorized persons" (lines 11-20), including illustrations.
Date: May 16, 1916
Creator: Berger, James H. & Rosson, George T.
Item Type: Refine your search to only Patent

Cotton-Press.

Description: Patent for a simple and inexpensive cotton press that gets cotton from a gin, forms it into a soft bat, and compresses it into a bale. The operator can tie a band around the bale. It consists of a frame, rollers, and gears.
Date: February 21, 1893
Creator: Bessonette, William T.
Item Type: Refine your search to only Patent

Tire-Heater.

Description: Patent for a rotary tire-heater that used for and movably supported near a blacksmith's forge, where it can be swung over for use when needed. It economizes time and fuel, and is automatically adjustable.
Date: June 26, 1894
Creator: Callaway, John A.
Item Type: Refine your search to only Patent

Broadcast Seeder.

Description: Patent for a broadcast seeder designed to "cultivate, plant, and subsequently roll or cover the seed, the elements for accomplishing the same being combined in a single device simply constructed" (lines 10-13).
Date: June 3, 1890
Creator: Callaway, Johnathan Asa
Item Type: Refine your search to only Patent

Spur.

Description: Patent for an improvement in spurs, this one containing a forked end with a rowel on each end of the fork. This is to ensure the rowels have a broad surface adjacent to each rowel and to prevent less injury to an animal when in use.
Date: February 4, 1919
Creator: Cook, Landon H.
Item Type: Refine your search to only Patent

Locomotive Drive-Wheel.

Description: Patent for "driving-wheels for locomotives; and it has for its object to provide an approximately perfect balanced driving wheel and thereby materially decrease the internal disturbances to the mechanism of the locomotive due to the present methods of counterbalancing in the driving-wheel the reciprocating and revolving parts thereof." (Lines 12-19) Includes instructions and illustrations.
Date: March 9, 1897
Creator: Davis, Philip Z.
Item Type: Refine your search to only Patent

Locomotive Driving-Wheel.

Description: Patent for a perfectly balanced wheel for locomotives. It is meant to "materially decrease the internal disturbances to the mechanism of the locomotive due to the present methods of counterbalancing in the driving-wheel" (lines 15-18).
Date: March 9, 1897
Creator: Davis, Philip Z.
Item Type: Refine your search to only Patent

Vehicle-Wheel.

Description: Patent for "driving wheels for locomotives; and it has for its object to provide an approximately perfect balanced driving-wheel and thereby materially decrease the internal disturbances to the mechanism of the locomotion due to the present methods of counterbalancing in the driving-wheel the reciprocating and revolving parts thereof." (Lines 12-19) Includes instructions and illustrations.
Date: March 9, 1897
Creator: Davis, Philip Z.
Item Type: Refine your search to only Patent

Engine.

Description: Patent for general "improvements in engines, and while one feature of our invention is adapted for use on all styles of engines, the invention in the complete form ...is especially suited for use on locomotive engines designed to exert high tractive power and to attain high speeds" (lines 12-19).
Date: February 19, 1895
Creator: Davis, Philip Z. & Barton, Alexander M.
Item Type: Refine your search to only Patent

Ore Separator

Description: Patent for ore separator. This invention "relates to separators or concentrators for separating or extracting gold from pulverized quartz sand or bearing dirt" (line 8-11). Illustration included.
Date: May 11, 1909
Creator: Donovan, John T., Sr.
Item Type: Refine your search to only Patent
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