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Mold and Mold Hoisting Apparatus for Building Concrete Walls.
Patent for a new and improved concrete-raising apparatus. This design "consists in a mold in which a course of a wall can be formed, and in devices for raising the mold in the formation of another course. The invention also consists in details of construction and combination of parts" (lines 12-17).
Date:
July 8, 1884
Creator:
Carrico, Thomas Willson
System:
The Portal to Texas History