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Description: Patent for improvements to the turning-plow, with convertible attachments for other forms of plow.
Date: December 11, 1900
Creator: Armstrong, John Joshua, Sr.

Texas Attorney General Opinion: O-890

Description: Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Gerald Mann, regarding a legal question submitted for clarification: Can the sheriff of Colorado County legally charge mileage actually and necessarily traveled in attempting to serve a criminal subpoena?
Date: May 31, 1939
Creator: Texas. Attorney-General's Office.


Description: Patent for lifting-jack invented by Calvin W. and Eugene Tanner. This lifting-jack invention is meant to be more durable in material, the material more inexpensive to acquire.
Date: July 3, 1906
Creator: Tanner, Calvin W. & Tanner, Eugene

Automatic Switch Indicator

Description: Patent for an automatic switch indicator. This invention is designed to "prevent accidents resulting from misplaced switches, due to the carelessness of the railroad employees or the inability of the engineer to see the customary track-signals" (line 14-19). Illustrations included.
Date: December 18, 1905
Creator: Coffin, Edward F.; Shaw, Carey & Green, Samuel

Plow Attachment

Description: Patent for a plow attachment. This invention works with sweep plows and consists of a runner and secured to the end of the plow beam. Illustration included.
Date: August 27, 1906
Creator: Wiegert, Theodore & Neumann, Louis


Description: Patent for improvements in well-screen by providing a symmetrical strainer which having an exceedingly firm and rigid frame; it is constructed as to interpose the least obstruction to the straining operation. (Lines 21-25) Illustration is included.
Date: December 8, 1903
Creator: Karsch, George J.

Bee Hive.

Description: Patent for improvements to "that class of bee-hives or bee-houses having a series of compartments..." (lines 15-17) with instructions and illustrations.
Date: May 21, 1878
Creator: Walton, George Slaughter

Apparatus for Destroying Insects.

Description: Patent for a new and improved apparatus for killing ants. This design "consist[s] of frame, levers, pivoted arms, piston-rod, piston provided with valves and openings, air-tight iron chamber having opening pipe, furnace provided with double lid, lugs, pipe, clamp, and wedge . . . whereby the flame as well as the poisonous vapors are injected into the insect chambers" (lines 50-58).
Date: August 2, 1881
Creator: Gray, Hiram Balderston