Resource Type
Counties
3 Matching Results
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Corn-Grinder
Patent for a grinder of ordinary corn
Date:
May 22, 1900
Creator:
Zimmerman, Frank W.
System:
The Portal to Texas History
Switch
Patent for a switch. "This invention obviates likelihood of derailment by splitting the switches, so as to thereby secure a means for preventing the rolling stock from being thrown from the tracks." Illustration included.
Date:
August 22, 1905
Creator:
Hibbets, Charles M.
System:
The Portal to Texas History
Reproducing Device for Graphophones.
Patent for a reproducing device for graphophones improving the objects that transmit sound to the horn or like element and provide a new means to mount the tone arm. It further improves the means for mounting the needle on the device.
Date:
April 22, 1919
Creator:
Adams, Henry Rolland
System:
The Portal to Texas History