Counties
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Well-Drilling Apparatus.
Patent for drilling well apparatuses that approximate the weight imposed so that the weight can be regulated to improve efficiency, including instructions and illustrations.
Date:
April 28, 1914
Creator:
Hughes, Howard R.
System:
The Portal to Texas History
Pencil Attachment
Patent for a pencil attachment that serves the purpose of protecting the pencil point when not in use. The attachment also protects and cleans the rubber or eraser of the pencil.
Date:
April 14, 1914
Creator:
Swindowsky, Charles
System:
The Portal to Texas History
Oil Burner
Patent for an improved oil burner design that uses steam to heat and vaporize the oil, mixing with the oil for more efficient burning, including an illustration.
Date:
April 7, 1914
Creator:
Tinkham, George F.
System:
The Portal to Texas History