UNT Libraries Government Documents Department - 31 Matching Results

Search Results

Apparatus for Calcining Plaster

Description: This patent is for an apparatus for calcining plaster of any kind. Or an apparatus that keeps clean the inner surface of a revoluble drum for ventilating the drum during the calcining operation. The apparatus also provides for easily removing the material after the completion of the cooking operation (Lawrence, 1902).
Date: March 12, 1902
Creator: Lawwrence, Ambrose


Description: Patent for cement that is better or equivalent to Keene's cement from England, made from pure gypsum and various chemicals and only calcinated once.
Date: May 7, 1907
Creator: Jones, Thomas


Description: Patent for cement of the type commonly known as Keene's cement, which is harder and glossier than other types of cement.
Date: March 23, 1909
Creator: Jones, Thomas

Cement Kiln

Description: 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.

Cement Plaster Kettle

Description: Patent for a cement plaster kettle. This "invention is an improvement in kettles for cooking gypsum in order to convert the same into cement-plaster" (line 8-10). Illustration included.
Date: April 5, 1904
Creator: Malone, Charles Henry


Description: Patent for a churn that can produce butter in very short period of time with minimal effort.
Date: May 19, 1913
Creator: Hoefer, Charles Jr.; Belt, Marcus L. Jr. & Belt, William R.


Description: Patent for a cut-off for water pipes, which provides a new construction to control the flow of supply of water from a roof.
Date: February 27, 1912
Creator: Pruden, John B.


Description: Patent for a fountain pen that has a piston which suctions ink into the pen's barrel and feeds it to the pen-point. The pen will be sturdy with no loose parts.
Date: September 1, 1896
Creator: Rogers, William Joseph

Gearing For Bicycles.

Description: Patent relating to "a new and useful improvement in gearing for bicycles and the like, and has for its object to so construct and arrange a device of this description as to avoid sudden shocks or jars which are occasioned by unevenness in the road-bed over which the machine is traveling, and also to enable the rider to exert a sudden force upon the pedals without straining the framework or wheels of the machine" (lines 9-18).
Date: August 17, 1897
Creator: Godfray, Ernest H.


Description: 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.

Quilting-Frame for Sweing-Machines.

Description: Patent for a quilting-frame for sewing-machines that "a folding tripod which is adapted to support the quilting frame, by means of a swiveled pulley connected to the handle of the frame carrying the rollers, the said pulley running backward and forward on the upper surface of a horizontal shaft which is held by means of adjustable rods, to a parallel shaft which is slidingly held to the upper surfaces of two of the tripod strips" (lines 18-26). The invention can fold compactly for storage.
Date: November 27, 1894
Creator: Parsons, James A.