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Steam Boiler Cleaner.

Description: Patent for a new and improved steam-boiler cleaner. This design "has relation to means for cleaning the mud or foam, or both, from steam-boilers; and it consists in the construction and novel arrangement of devices" (lines 16-19).
Date: February 12, 1884
Creator: Foster, James Harvey.
Partner: UNT Libraries Government Documents Department

Permutation Lock.

Description: Patent for a new and improved combination lock. This design "consists in the construction and novel arrangement of the slotted bolt, follower, and follower-shaft, the elongated bolt-stop pivoted in the slot of the bolt, the radially-slotted disks having concentric stems on the follower-shaft, and the lettered or figured and graduated stem-caps engaging the respective stems by means of circular series of teeth" (lines 20-27).
Date: December 12, 1882
Creator: Saxon, James W.
Partner: UNT Libraries Government Documents Department
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