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Filed: Jun. 23, 1906
Issued: Mar 5, 1907
Inventor: Zardia Crain
Assignees: Daniel Bower and A.J. Woodard
In his patent applications, Crain descried his invention as follows:
"The invention has for an object to provide book-holding carriage mounted for travel in both vertical and horizontal planes relative to the computing-machine to which it is attached, together with means for automatically controlling the movement of said carriage in the operation of the computing-machine. Another object of the invention is to provide an improved construction and arrangement of book-holder provided with platens adapted to be inserted beneath the leaves of the book for retaining the book in proper position within the carriage."
Image taken from U.S. Patent 846,012 - Digitized by Google