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6 Matching Results
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Rotary Drilling Apparatus dated November 5, 1918
Patent for a rotary drilling apparatus that specifies in wells and mines.
Date:
November 5, 1918
Creator:
Robert E. Carmichael
System:
The Portal to Texas History
Two-Piece Box.
Patent for certain new and useful improvements in two piece boxes, including instructions and illustrations.
Date:
November 28, 1899
Creator:
Armstrong, Martin
System:
The Portal to Texas History
Improvement in the Manufacture of Fertilizers.
Patent for a process of treating waste animal matter from tallow-rendering factories with plaster-of-paris for use as fertilizer.
Date:
November 25, 1873
Creator:
Stevens, Hennell
System:
The Portal to Texas History
Improvement in Screw-Propulsion.
Patent for "a new and useful Improvement in Screw-Propellers and their adaptation to the hulls of vessels" (lines 4-6) including illustrations.
Date:
November 9, 1875
Creator:
Wilson, Joseph Erwin
System:
The Portal to Texas History
Means for Preventing Clogging of the Working Barrels of Pumps.
Patent for an apparatus that prevents the clogging of the working barrels of pumps.
Date:
November 13, 1917
Creator:
Carmichael, Robert E.
System:
The Portal to Texas History
Cotton Picker
Patent for a cotton picker. Illustration included.
Date:
November 29, 1904
Creator:
Hoskins, William Wharton
System:
The Portal to Texas History