UNT Libraries Government Documents Department - 580 Matching Results

Search Results


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.


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

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.


Description: Patent for a brooder which prevents chicks from entering after a certain number have gone through the door.
Date: November 5, 1912
Creator: Becker, August B.

Railway-Ticket, &c.

Description: Patent "to furnish for railway-companies a form of excursion-ticket whose return portion or stop-over portion, as the case may be, is not capable of successful use by scalpers" (lines 11-15).
Date: July 9, 1901
Creator: Smith, Lowndes G.

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: October 23, 1906
Creator: Coffin, Edward F.; Shaw, Carey & Green, Samuel