Resource Type
Counties
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Lock.
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.
System:
The Portal to Texas History
Spark-Arrester.
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.
System:
The Portal to Texas History