Diagram of Christopher Shole's typewriter upstrike mechanism, circa 1868.
flipFlip to The printed patent drawing for a Type-Writer invented by Christopher L. Sholes, Carlos Glidden, and J. W. Soule, submitted June 23, 1868.
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Sholes" "up-strike" design diagram

Credit: Patent office

This diagram shows the basic "up-strike" mechanism for Christopher Shole's first typewriter. Because the key struck upwards onto the paper above, the typing was hidden from view. Shole's early "blind-writer" included a hinged carriage so that its operator could check the work.

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