Rotary Engine (open access)

Rotary Engine

Patent for "a light-running high-speed rotary engine which does not have any dead-center and to avoid back pressure from the exhaust" (lines 15-17).
Date: April 9, 1901
Creator: Schleicher, George
System: The Portal to Texas History
Coin Assorter and Deliverer. (open access)

Coin Assorter and Deliverer.

Patent for an improved coin assorter and deliverer that automatically makes change. It has a glass window in the back and a slot in the top where an operator can insert coins, where the machine sorts them.
Date: April 9, 1895
Creator: Reynolds, Stephen D.
System: The Portal to Texas History