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Spark-Arrester.

Description: Patent for Spark-Arrester. The author claims his invention catches sparks and throws them to the bottom of the chamber to the discharge pipe. Used in locomotive smoke stacks.
Date: October 12, 1880
Creator: Swan, Robert F.
Partner: UNT Libraries Government Documents Department

Bullet.

Description: Patent for a new and improved bullet. This design calls for a cavity at the base of the bullet and a tube of flexible material to be inserted snugly into the cavity. This results in less wobbling after the bullet has been fired.
Date: October 12, 1880
Creator: Petmecky, Joseph C.
Partner: UNT Libraries Government Documents Department

Sand-Band.

Description: Patent for a sand band which will prevent sand and dirt from working in between the axle and hub and into the axle-box of a vehicle.
Date: October 12, 1880
Creator: Lupton, Lewis R.
Partner: UNT Libraries Government Documents Department
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