Adjustable Book Support.
Description:
Patent for a new and improved book rest. This design consists "of an upright pivoted in a support or base, a sliding lower supporting cross-bar, an upper sliding supporting-bar, both bars having sockets upon their rear sides sliding upon the upright and provided with set-screws, and leaf-clamps consisting of a piece of spring doubled at one end to form slides sliding upon the arms of the upper cross-bar, forming curved yielding portions, forming transverse eyes at the other ends, having flat bl…
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Date:
November 25, 1884
Creator:
Johnson, William Oscar
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department