Improvement in Bridges.
Description:
Patent for an improvement in Bridges and Self-Supporting Roofs and Girders. The invention provides instruction for "the construction of truss-bridges and self supporting roofs and girders"..."by nailing or bolting securely together successive layers of plank joined at different points."
Date:
September 23, 1873
Creator:
Davis, Benjamin F.
Item Type:
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Partner:
UNT Libraries Government Documents Department