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Machine for Mixing Mortar.

Description: Patent for a new and improved machine for mixing mortar. This design "consists in a cylinder composed of bars set into open heads and rotating beneath a hopper . . . so that the material to be mixed rests upon the cylinder, and is rasped or grated off by the motion of the cylinder and received on the inside of the cylinder between the bars. . . . When the material is received inside the cylinder it is carried around by the rotary motion, and is turned over and forced out" (lines 7-22).
Date: September 14, 1880
Creator: Schellenberger, Samuel L.
Partner: UNT Libraries Government Documents Department

Mold for Earth and Stone Fences.

Description: Patent for a new and improved mold for earth and stone fences. This design "consist[s] of the inclined adjustable sides, having inclined standards, removable boards, and boards, tables, and locking-bolts . . . [and] the sides having lower boards or metallic pieces, upper removable boards or metallic pieces, and inclined standards of the tables, locking-bolts, handles, and stakes" (lines 21-30).
Date: July 26, 1881
Creator: Budd, Lewis R.
Partner: UNT Libraries Government Documents Department

Molding Apparatus

Description: Patent for an improved model of a molding apparatus for producing blocks of concrete that is cheaper to manufacture and more durable and adjustable than its predecessor.
Date: March 20, 1920
Creator: Nelson, William E.
Partner: UNT Libraries Government Documents Department

Extensible Trestle.

Description: Patent for an improvement to extensible trestles for masonry and carpentryscaffolding and other uses, including both instructions and illustrations.
Date: January 7, 1890
Creator: Bogusch, Robert J.; Bogusch, Gustav & Zincke, August
Partner: UNT Libraries Government Documents Department

Artificial Stone Block.

Description: Patent for a new and improved artificial-stone block. This design "consists in the particular formation of the protuberances by which interlocking joints or seams of the building-blocks are attained, the object of which is to so form the prolific protuberances of said blocks as to permit joining them in close proximity on all the sides or faces of the seam, to reduce the binding material for the same and increase the strength of the same" (lines 14-22).
Date: May 3, 1892
Creator: Graham, George M.
Partner: UNT Libraries Government Documents Department
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