Latest content added for The Portal to Texas Historyhttps://texashistory.unt.edu/search/?t=fulltext&fq=dc_type%3Atext_patent&sort=date_a&display=grid2014-10-16T06:42:47-05:00UNT LibrariesThis is a custom feed for searching The Portal to Texas HistoryImprovement in Construction of Jails.2011-07-20T16:24:18-05:00https://texashistory.unt.edu/ark:/67531/metapth166488/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth166488/"><img alt="Improvement in Construction of Jails." title="Improvement in Construction of Jails." src="https://texashistory.unt.edu/ark:/67531/metapth166488/small/"/></a></p><p>Patent for improvement in construction of jails; in which a system of flues in between layers of a double floor provide ventilation through grates in the walls and upper layer of the floor, without compromising security.</p>Improvements in Traction-Engines.2011-08-04T17:55:08-05:00https://texashistory.unt.edu/ark:/67531/metapth169908/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth169908/"><img alt="Improvements in Traction-Engines." title="Improvements in Traction-Engines." src="https://texashistory.unt.edu/ark:/67531/metapth169908/small/"/></a></p><p>Patent for improving traction engines for use in hauling on farms and farm roads. Includes instructions and illustrations.</p>Cotton Chopper and Cultivator.2011-08-04T17:55:08-05:00https://texashistory.unt.edu/ark:/67531/metapth174752/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth174752/"><img alt="Cotton Chopper and Cultivator." title="Cotton Chopper and Cultivator." src="https://texashistory.unt.edu/ark:/67531/metapth174752/small/"/></a></p><p>Patent for a machine that allows the user to simultaneously cut down and plow cotton, or perform either task separately. Includes instructions and illustrations.</p>Cotton-Cultivator Wheel.2014-10-16T06:42:47-05:00https://texashistory.unt.edu/ark:/67531/metapth510651/<p><a href="https://texashistory.unt.edu/ark:/67531/metapth510651/"><img alt="Cotton-Cultivator Wheel." title="Cotton-Cultivator Wheel." src="https://texashistory.unt.edu/ark:/67531/metapth510651/small/"/></a></p><p>Patent for certain new and useful improvements in cotton cultivator wheels, including instructions and illustrations.</p>