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Improvement In Padlocks.

Description: Patent for improvements to Padlocks which can be opened with a key in conjunction with maneuvering the tumblers or locking-bolt.
Date: August 14, 1878
Creator: Jacobs, Morris

Improvement in Plates for Holding Screw-Cutting Dies.

Description: Patent for plates to hold screw-cutting dies, which allows the threads to be more accurately placed. Dies are also able to work for left handed dies as well as right handed dies.
Date: October 14, 1879
Creator: Geiser, Johan G.
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