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Lawn-Mower.
Patent for lawn mower with special stationary blades; designed to improve the operation of the rotary blades with which the stationary blades come into contact, thus "insuring an easy running, and a perfectly clean and smooth shearing of the grass, and prevent any shock, grinding or clicking, when the contact is made" (lines 8-11).
Date:
July 21, 1914
Creator:
Clark, Josepsh Chester
System:
The Portal to Texas History
Apparatus for Molding Hollow Concrete Walls
Patent for an apparatus that is a mold for crafting hollow concrete walls. Illustration included.
Date:
December 21, 1909
Creator:
Nelson, William E.
System:
The Portal to Texas History