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Centrifugal Brake Mechanism
Patent for a centrifugal break mechanism, primarily designed as an automatic brake device for elevators travelling at an abnormal speed.
Date:
April 16, 1918
Creator:
Cobb, Albert C.
System:
The Portal to Texas History
Shadowgraph.
Patent for "improvements in shadowgraphs" (lines 12-13) "to afford entertainment and amusement" (lines 22-23) by means of using "a holder for pieces of which a design may be composed" (lines 31-32), including one illustration.
Date:
April 16, 1918
Creator:
Barler, Eugene Miles
System:
The Portal to Texas History
Trolley-Wheel
Patent for a trolley wheel and a mechanism for keeping the wheel on the trolley wire. Illustrations included.
Date:
April 16, 1912
Creator:
Schultze, William H.
System:
The Portal to Texas History
Glazing-Bar
Patent for device to securely hold a pane of glass on roofs, skylights, etc. without the use of putty.
Date:
April 16, 1901
Creator:
Folse, Louis D.
System:
The Portal to Texas History