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3 Matching Results
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Cattle-Guard.
Patent for a cattle guard for railroad tracks, which is activated by the pressure of a cow stepping on its platform and raises bars to block the the cow from crossing the track. It goes back down automatically when the pressure is removed off the platform.
Date:
February 2, 1909
Creator:
Crouch, Jim L.
System:
The Portal to Texas History
Rotary Fountain-Brush
Patent for a Rotary Fountain-Brush. The innovation of this item is that the water or cleaning agent fed into the brush causes it to rotate, using the medium of a water wheel or rotary.
Date:
August 2, 1921
Creator:
Hargis, Lawrence H.
System:
The Portal to Texas History
Bread Slicer
Patent for machine that can slice bread, cake, or the like.
Date:
January 2, 1917
Creator:
McLaughlin, Frank
System:
The Portal to Texas History