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Mechanical Telegraph-Sounder
Patent for "a sounder wherein a finger-lever and sounding-lever are combined together with a spring" (lines 13-15) and is "adapted for the use of learners for practicing the manipulation of a telegraph finger-key" (lines 8-10) including instructions and illustrations.
Date:
June 22, 1880
Creator:
Clopton, John B.
System:
The Portal to Texas History
Washing-Machine.
Patent for an improved washing machine: "The invention consists in combining a lower cylinder having longitudinal spiral grooves with an upper cylinder having longitudinal straight grooves and holes" (lines 14-17).
Date:
January 20, 1880
Creator:
Dorris, George W.
System:
The Portal to Texas History