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Improvement to Lifting-Jacks

Description: Patent for the improvement of the lifting jack which allows the user to "lower the lifting bar by a step-by-step movement as well as to elevate the lifting bar by such a movement (lines 12-14). Includes instructions and illustration."
Date: January 12, 1915
Creator: Parker, Charles W. & Wittliff, Theodore H.
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Partner: UNT Libraries Government Documents Department

Watch

Description: Patent for a watch case that can have different size clock works put in it.
Date: November 12, 1912
Creator: Friedman, Adolph
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Tag for Keys and Other Articles.

Description: Patent for a tag that can be attached to keys for hotel rooms and similar uses. The tag could include the room number associated with the key, the hotel address, and a space for inserting advertising cards.
Date: March 12, 1918
Creator: Hartman, William D.
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Partner: UNT Libraries Government Documents Department

Matrix-Molding Device

Description: Patent for improvements to matrix-molding devices, "and the object is to provide simple devices which are carried by the matrices or molding devices for forming rule retaining members which have angular grooves" (lines 14-17).
Date: September 12, 1913
Creator: Markwell, Andrew E.
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Partner: UNT Libraries Government Documents Department

Piano

Description: Patent for an invention related to instruments with sounding-boards, particularly upright pianos, that allows for volume control.
Date: April 12, 1910
Creator: Norcross, Levi Watson
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Partner: UNT Libraries Government Documents Department

Saw-Gummer.

Description: Patent for saw gummers with simplified operation and adjustable attachments, enabling quicker gumming or sharpening of gin or metal saws, such as those in a cotton gin.
Date: August 12, 1919
Creator: Helm, Clyde D.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Beveled-Rule-Molding Device

Description: Patent for improvements in matrices and devices which are similar to matrices that are used in linotype and intertype or line casting machines. These devices consist of a rule molding mechanism with a bar having the general contour of a matrix. A channel exists in one side with under cut edges. These objects can be operated by matrix molding devices for forming rules for printing purposes.
Date: May 12, 1914
Creator: Markwell, Andrew E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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