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in creator/contributor: "Bell, T. H."  
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Vehicle-Spring

Description: Patent for a vehicle spring that is elliptical, "whereby the upper section... may move longitudinally independent of the lower section of the spring" (lines 18-21).
Date: May 22, 1917
Creator: Plank, Samuel K.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Method of Making Concrete Tombstones.

Description: Patent for a method of making concrete tombstones which are waterproof and don't require wetting during the drying process to prevent cracking, reducing the drying time from 30 days in the shade to 4 days in the sun. This is achieved by adding salt to hold water which prevents cracking while drying, and a paint coat of aluminum powder and gasolene to waterproof the concrete and add a shine to it.
Date: July 2, 1907
Creator: Hendley, Marion Jonathan
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Darby.

Description: Patent for a darby with detachable extensions for use versatility and easier transport.
Date: May 22, 1917
Creator: Plank, Samuel K.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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