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Pump.

Description: Patent for a new and improved pump. This design "has been specially devised for use in pumping gas, air, or vapor — as in ice-machines, for instance — and mainly with reference to attaining circulation with low pressure; but when operated at high speed considerable pressure may be attained therewith, whether operating upon vapors or liquids, as . . . [the] pump involves a novel mode of operation, in that it possesses characteristics partially common to pumps of the rotary system, as well as to … more
Date: July 19, 1881
Creator: Rose, Thomas
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Motor

Description: Patent for "a device which may be used for pumping, sawing, drilling, and other analogous purposes, which will be effective in its operation, and which will not be liable to get out of order, and the parts of which will not be liable to get out of alignment with each other" (lines 24-31).
Date: July 19, 1887
Creator: Holmgreen, Julius H.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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