Resource Type
Counties
3 Matching Results
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Puzzle.
Patent for a wooden cube puzzle made up of many irregular shaped pieces, which can be manufactured to be hard or easy.
Date:
April 14, 1908
Creator:
Critchett, James C.
System:
The Portal to Texas History
Safety Device for Steam-Boilers.
Patent for a safety device for steam boilers, which activates an alarm when water levels are too high on the fuse box that gives an earlier warning, does not allow the fuse box to be changed without the chief engineer being alerted, and prevents false alarms.
Date:
July 14, 1908
Creator:
Smith, James E.
System:
The Portal to Texas History
Pianissimo Device.
Patent for a pianissimo device for upright pianos, which "takes up the lost motion when the soft pedal is used by automatic means" (lines 14-16).
Date:
April 14, 1908
Creator:
Decker, Herman L.
System:
The Portal to Texas History