Resource Type
States
27 Matching Results
Results open in a new window/tab.
prev
Results:
25 - 27 of
27
Match-Safe.
Patent for a match box that is watertight and easy to open and close.
Date:
February 12, 1907
Creator:
Mitchell, Malcolm, E.
System:
The Portal to Texas History
Refrigerating Apparatus
Patent for a refrigerating apparatus. This invention is a coil composed of two pipes of different diameters placed inside of each other acting as a condensing agent. Illustration included.
Date:
February 12, 1907
Creator:
Holdgreen, Julius H.
System:
The Portal to Texas History
Steam and Air Valve Operator.
Patent for a steam and air valve operator that allows "the rotative movement of element to be transformed into reciprocity movement of another element." (lines 11-13). It also has new setup for double gears within the device that allows rest of the parts between movements.
Date:
February 12, 1907
Creator:
Greeson, David H.
System:
The Portal to Texas History