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Twin Cultivating-Harrow.
Patent for a twin cultivating harrow with an especially designed coupling that connects the harrow frames. It is adjustable and is meant to cultivate corn, cotton, and similar crops.
Date:
July 18, 1893
Creator:
Waldrip, Thomas A.
System:
The Portal to Texas History
Steam-Pressure and Water-Level Recorder for Boilers.
Patent for a division on the inventor's previous patent application (No. 404,658). This patent is for a device that records steam pressure and water levels in boilers, and is meant "to provide a new and improved steam pressure recorder for boilers, which is simple and durable in construction, very effective in operation, and arranged to automatically record the pressure of the steam in the boiler for a given period" (lines 14-19).
Date:
April 18, 1893
Creator:
Lewis, William Morgan
System:
The Portal to Texas History
Design for a Tire For Vehicle-Wheels.
Design patent for a tire for vehicle-wheels with a primary feature of longitudinal grooves and having short transverse grooves arranged at intervals and extending across the space between the longitudinal grooves.
Date:
July 18, 1899
Creator:
Kelly, Erastus Peter
System:
The Portal to Texas History