UNT Libraries Government Documents Department - 2 Matching Results

Search Results

Results: 1 - 2

Lock.

Description: Patent for a permutation lock with illustrations. The combination on the lock can be changed an infinite number of times by the user.
Date: October 7, 1902
Creator: Nickey, Oscar E.
Item Type: Refine your search to only Patent

Spark-Arrester.

Description: Patent for improvements in spark-arresters for locomotives in “which [it] will prevent the sparks and cinders from falling upon the train and upon surrounding lands and buildings;” (lines 10-12) by using a combination of a curved smoke-stack, a cinder-box, conducting pipes and an ash pen. Illustration is included.
Date: April 7, 1891
Creator: Hadlock, Edson J.
Item Type: Refine your search to only Patent
Back to Top of Screen