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Molding Apparatus.

Description: Patent for a molding apparatus for forming precast concrete units used for constructing monolithic straight and curved walls, floors, ceilings, and other building structures.
Date: October 31, 1922
Creator: Nelson, William E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Floor-Clamp.

Description: Patent for a simple and inexpensive floor-clamp that aids in laying floors so that the floor is laid uniformly and has a good joint. This prevents the floors from warping or curving.
Date: October 18, 1892
Creator: Zauner, Alexander
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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