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Automatic Mail and Parcel Delivery Apparatus

Description: Patent for a automated motorized mail delivery vehicle that travels in the air on electric lines on poles to deliver incoming mail and retrieve outgoing mail from rural routes or parcels in urban areas.
Date: March 5, 1907
Creator: Dederick, Zadoc P.
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Partner: UNT Libraries Government Documents Department

Relay.

Description: Patent for an electric relay "which is normally actuated by weak currents, and adapted when abnormally energized by heavier currents to shift the local current from one connection to another in order to prevent the relay armature from sticking" (lines 10-15).
Date: May 18, 1909
Creator: Rice, Hugh C.
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Partner: UNT Libraries Government Documents Department

Flue-Beader.

Description: Patent for a tool that allows a boiler flue to rotate while not letting any steam out of the flue. This allows for the projecting end of the flue to turn without damaging itself and makes taking the flue apart easier for workmen.
Date: May 4, 1897
Creator: Hutchison, Wilson F.
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Partner: UNT Libraries Government Documents Department

Conduit Electric Railway.

Description: Patent for a surface trolley for electric railways that operates "upon the surface of the pavement or ground between the tracks of the road, for connecting the car with the motor power, in place of the trolley and over head wires now suspended upon the unsightly poles in the center or at the sides of the street, which are found to be very objectionable on account of their obstructing the passageway in the streets and upon the side walks, and the wires preventing the free movement of fire compan… more
Date: April 11, 1893
Creator: de Voe, William R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
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