Resource Type
Counties
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Improvement In Padlocks.
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
System:
The Portal to Texas History
Improvement in Plates for Holding Screw-Cutting Dies.
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.
System:
The Portal to Texas History