Collection
Counties
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Tarrant County
Cadastral map of Tarrant County, Texas in the Prairies and Lakes region. Some boundaries and grid lines are marked in color. Scale ca. 1:133,334 (4000 varas per inch).
Date:
November 1856
Creator:
Arlitt, F. H.
Object Type:
Map
System:
The Portal to Texas History
Converting Reciprocating into Rotary Motion
Patent for converting reciprocating into rotary motion by using “two vertically moving racks with a cog wheel on a small shaft between them which gears into the teeth of the racks” (lines 16-19), includes illustration.
Date:
November 1, 1859
Creator:
Harper, C. A.
Object Type:
Patent
System:
The Portal to Texas History