Resource Type
3 Matching Results
Results open in a new window/tab.
Results:
1 - 3 of
3
Improvement in Eyeglasses.
Patent for improvements to eyeglasses to accommodate facial differences.
Date:
July 9, 1878
Creator:
Hawkes, Albert K.
System:
The Portal to Texas History
Improvement in Combined Cistern Tops and Filters.
Patent for improvements to cistern covers, combining a cast iron, charcoal filled filter and specially shaped cast perforated iron lid with handles for removing the cover and for changing the charcoal.
Date:
July 9, 1874
Creator:
Stacey, Ephraim Douglass
System:
The Portal to Texas History
Improvement in Car-Trucks.
Patent for the improvement of car-trucks, consisting in the arrangement of each wheel of a car-truck upon the outer end of a separate short axle, the bearings of each axle being both located on the inner side of the wheel and the bearing at the inner end of the axle provided with a sliding-box and springs. It includes a description and illustration.
Date:
July 9, 1872
Creator:
Onley, Joseph
System:
The Portal to Texas History