Resource Type

Improvement in Cotton-Condensers. (open access)

Improvement in Cotton-Condensers.

Patent to improve the compressing-roller design in a cotton gin, to keep the mechanisms from clogging. This is an addition to a previous patent by the same inventor that improved methods of cleaning the cotton. It includes an explanation with references, and illustrations.
Date: December 10, 1878
Creator: Donovan, John T.
System: The Portal to Texas History
Improvement in Ice-Machines. (open access)

Improvement in Ice-Machines.

Patent for improvements to the construction of "of the various parts of the [ice machine], whereby the reconversion of the ether into liquid before it reaches the freezing-vessel or chamber is better assured" (para. 3).
Date: December 12, 1871
Creator: Mühl, Andrew
System: The Portal to Texas History
Improvement in Combined Planter and Cultivator. (open access)

Improvement in Combined Planter and Cultivator.

Patent for a new and improved planter and cultivator with illustrations. The invention furnishes a combined planter and cultivator constructed in such a way that "the seed dropping appliances can be readily detached and the machine adjusted for use as a cultivator." (lines 18-20)
Date: December 16, 1879
Creator: Tanner, James Henry
System: The Portal to Texas History