Resource Type

Improvement in Screw-Propulsion. (open access)

Improvement in Screw-Propulsion.

Patent for "a new and useful Improvement in Screw-Propellers and their adaptation to the hulls of vessels" (lines 4-6) including illustrations.
Date: November 9, 1875
Creator: Wilson, Joseph Erwin
System: The Portal to Texas History
Improvement for Apparatus for Cutting Glue. (open access)

Improvement for Apparatus for Cutting Glue.

Patent for a design for a battery-powered wire glue cutter/slicer including instructions and illustrations.
Date: October 11, 1875
Creator: Stevens, Hennell
System: The Portal to Texas History
Improvement in Processes for Preparing and Drying Glue. (open access)

Improvement in Processes for Preparing and Drying Glue.

Patent for a process of drying glue that uses superheated steam and a drying chamber.
Date: October 11, 1875
Creator: Stevens, Hennell
System: The Portal to Texas History