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Locomotive Valve-Gear.

Description: Patent for improvement to the locomotive valve-gear by utilizing a centrally-pivoted lever.
Date: January 11, 1887
Creator: Lewis, Wallace James
Partner: UNT Libraries Government Documents Department

Clock Attachment

Description: Patent for an improved clock attachment to operate "a series of alarms or signals arranged in different rooms of a building or in other separated stations for simultaneously sounding the alarms or for operating the signals at predetermined times." (lines 11-17) including illustrations.
Date: January 11, 1915
Creator: Moore, John R.
Partner: UNT Libraries Government Documents Department
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