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 County: Bexar County, TX
 Collection: Texas Patents
Permutation-Lock

Permutation-Lock

Date: June 23, 1883
Creator: Schuetze, Robert
Description: Patent for an improvement in the science of combination locks. Illustrations and instructions are included.
Contributing Partner: UNT Libraries Government Documents Department
Spark-Arrester.

Spark-Arrester.

Date: August 30, 1897
Creator: Rood, Grenville H.
Description: Patent for a Spark-Arrester.
Contributing Partner: UNT Libraries Government Documents Department
Educational Device.

Educational Device.

Date: February 10, 1903
Creator: Williams, Willoughby Columbus
Description: Patent for improvements in educational device by providing “a simple and comparatively inexpensive one designed for teaching addition, multiplication, subtraction, and division and capable of enabling the same to be explained with greater ease and at the expenditure of much less energy of both pupil and teacher.” (Lines 12-18) Illustration is included.
Contributing Partner: UNT Libraries Government Documents Department
Locking System for Jail-Doors

Locking System for Jail-Doors

Date: January 27, 1903
Creator: Youngblood, David Franklin
Description: Patent for locking system for jail doors where locks of a series of cell doors can be operated simultaneously.
Contributing Partner: UNT Libraries Government Documents Department
Cheese-Cutter

Cheese-Cutter

Date: December 30, 1902
Creator: Niggli, Emil
Description: Patent for cheese cutter that features improvements which include guides for the knife, the box and cover, and the means for holding the cheese in place on a rotatable platform.
Contributing Partner: UNT Libraries Government Documents Department
Spring-frame for Motor-cycles

Spring-frame for Motor-cycles

Date: December 23, 1902
Creator: White, Edward Young
Description: Patent for a suspension spring-frame that is lighter and provides better absorption of shock for motorbikes, with illustrations.
Contributing Partner: UNT Libraries Government Documents Department
Hammock-Support.

Hammock-Support.

Date: November 25, 1902
Creator: Youngblood, David Franklin
Description: Patent for hammock support which is securely fastened and can be readily removed.
Contributing Partner: UNT Libraries Government Documents Department
Interlocking-Bar Grating for Jails.

Interlocking-Bar Grating for Jails.

Date: November 25, 1902
Creator: Youngblood, David Franklin
Description: Patent for gratings used in jails. "In these structures as ordinarily made upright and horizontal bars are provided which are located at right angles to each other, these bars being necessarily secured together at their points of intersection to prevent their being spread apart" (lines 11-16).
Contributing Partner: UNT Libraries Government Documents Department
Lining for Cells, Vaults, or the Like

Lining for Cells, Vaults, or the Like

Date: November 25, 1902
Creator: Youngblood, David F.
Description: Patent for Lining for Cells, Vaults, or the Like. The Linings whether employed in Jail-Cells or other Similar Buildings , and the object thereof is to provide a structure made up of parts which may be placed within a room or enclosure and securely built therein without necessity of using patch-bolts or screws.
Contributing Partner: UNT Libraries Government Documents Department
Sulky-Lister

Sulky-Lister

Date: November 25, 1902
Creator: Engelmann, Gustav
Description: Patent for an improved sulky-lister for planting listed corn, cotton, and other crops.
Contributing Partner: UNT Libraries Government Documents Department
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