Trolly Wheel and Harp. (open access)

Trolly Wheel and Harp.

Patent for trolley wheels, where "the transmission of the current through the wheel to the harp is maintained at the maximum and the necessary wear of the relatively movable parts reduced to a minimum" (lines 11-15).
Date: May 7, 1912
Creator: Neighbour, William W.
System: The Portal to Texas History
Fiber-Separating Machine. (open access)

Fiber-Separating Machine.

Patent for a new and improved fiber separating machine "in which the entire cleaning or separating of the fibers from the plant stock can be done in one operation" (lines 10-13).
Date: May 5, 1914
Creator: Parks, Michael Edward
System: The Portal to Texas History