3 Matching Results
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Improvement in Car-Couplings
Patent for car coupling device that attaches cars automatically when moved together while also detaching if one or more cars come off the tracks.
Date:
May 22, 1877
Creator:
Dobbs, Charles & Robinson, Samuel L.
System:
The Portal to Texas History
Improvement in Revolving Conical Mold-Boards
Patent for improvements and new design for a Revolving Conical Mold-Board Plow.
Date:
May 22, 1877
Creator:
Dryer, Charles Valentine
System:
The Portal to Texas History
Improvement in Vehicle-Springs
Patent for a newly designed vehicle spring that attached to the axle and features an auxiliary spring.
Date:
May 22, 1877
Creator:
Faber, Fredrick W.
System:
The Portal to Texas History