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Lock Stitch Ripper.
Patent for a new and improved multi-tool. This design "relates to an improved combination tool or implement designed to be used in connection with sewing-machines, and combining in a convenient form several instruments which operators on sewing-machines should always have ready at hand" (lines 9-14).
Date:
April 8, 1884
Creator:
Wheeler, Elijah Harvey
System:
The Portal to Texas History
Scale Alarm
Patent for an improved scale alarm that automatically alerts the user to scales that are not balanced and is unaffected by temperature changes, including illustrations.
Date:
April 8, 1913
Creator:
Rice, William Jasper
System:
The Portal to Texas History