This system will be undergoing maintenance Tuesday, March 28 from 1:00 PM to 3:00 PM CST

UNT Libraries Government Documents Department - Browse


Improved Water-Wheel.

Description: Patent for the improvement of the water-wheel using curved buckets over a spiral water passage to increase power and volume, including illustration.
Date: February 8, 1859
Creator: Littlepage, C. V.
Item Type: Patent


Description: Patent for a spring lever for fastening sliding windows, including illustration.
Date: August 31, 1858
Creator: Root, Irving
Item Type: Patent

Escapement for Timekeepers.

Description: Patent for the improvement in the escapement of the watch for a "more regular and less liable to get out of order" through wear (lines 23-24), including illustration.
Date: October 12, 1858
Creator: Bishop, Josiah
Item Type: Patent