Nut Lock (open access)

Nut Lock

Patent for a nut lock. The nut lock consists "of a double threaded bolt having two oppositely threaded nuts thereon and a locking washer" (line 17-19). Illustration included.
Date: May 10, 1904
Creator: Hopping, Samuel Miller
System: The Portal to Texas History
Swing. (open access)

Swing.

Patent for a new and improved swing. This design consists in "[t]he combination, with the two folding frames, provided with jointed braces, of the horizontal cross-bars secured to said frames, the swinging arms pivoted to said bars and also to the car, cross-bars secured to these arms, [and] the curved levers" (lines 95-100). Said curved levers are hinged to "the cross-bars, [and] the crossed ropes or chains [are] connecting the short arms of said levers to the cross-bars, and the pull-cords [are] attached to the long arms of said levers and [are] extended to the seats of the said car" (lines 1-5).
Date: May 10, 1887
Creator: Rigby, James
System: The Portal to Texas History
Improvement in Refining and Ageing Liquors. (open access)

Improvement in Refining and Ageing Liquors.

Patent for improvement in refining and ageing liquors, including an illustration. The process includes expelling air from distilled liquors, heating them to a boiling point and then cooling them in a waterbath, through the use of a closed, air-tight vessel surrounded by an open water-vessel.
Date: May 10, 1870
Creator: Gilman, Samuel H.
System: The Portal to Texas History