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4 Matching Results
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Cement Kiln
Patent for a new and improved cement kiln for drying gypsum and other materials employed in the manufacture of cement and plaster.
Date:
April 28, 1902
Creator:
Malone, Samuel R.
System:
The Portal to Texas History
Cement Plaster.
Patent for a cement plaster that is similiar to "Keene's" cement.
Date:
February 28, 1911
Creator:
Cady, Jephtha Daniel
System:
The Portal to Texas History
Insecticide.
Patent for improvements in poisons for prairie-dogs, a “chemical compositions adapted to destroy vermin and more particularly prairie-dogs; but it may also be used to destroy many other sorts of vermin, including birds and insects.” (Lines 12-16) Ingredients and instruction of how to mix this compound are included. No illustration.
Date:
July 28, 1891
Creator:
Staples, David W.
System:
The Portal to Texas History
Sulky.
Patent for improvements in sulkies by using materials such as curved springs, cross-bar and braces to support the body of the vehicle and making it rigid, with a sturdy frame, the sulky would vibrate freely in every direction. Illustration is included.
Date:
July 28, 1891
Creator:
Harper, William D.
System:
The Portal to Texas History