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Refrigerating Apparatus.
Patent for "improvements in refrigerating apparatuses, more particularly to those for the purpose of hardening ice cream" (lines 8-11) including instructions and illustrations.
Date:
April 28, 1914
Creator:
Mackin, Sam
System:
The Portal to Texas History
Derailer
This is a patent for a railway Derailer. This new derailer is less expensive, easier to manufacture, and will be an improvement over older models. For example, it is easier to attach to the rail track and more efficient at stopping railroad collisions.
Date:
April 22, 1919
Creator:
Gravis, James. C
System:
The Portal to Texas History