Resource Type
Counties
3 Matching Results
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Plow Attachment.
Patent for an adjustable plow attachment that is placed onto a plow blade and sweeps aside earth while "forming a load-bearing surface." (p. 1)
Date:
December 25, 1900
Creator:
Bracewell, William B.
System:
The Portal to Texas History
Rail-Joint.
Patent for a new design of rail joints in which headed bolts and wedge plate have keyhole slots, including with illustrations.
Date:
April 24, 1900
Creator:
Park, Henry J.
System:
The Portal to Texas History
Ventilator.
Patent for a new and useful ventilator, including instructions and illustrations.
Date:
February 27, 1900
Creator:
Schumacher, Robert H.
System:
The Portal to Texas History