5 Matching Results

Search Results

Results: 1 - 5

Automatic Telephone-Exchange System.

Description: Patent for "a simple system and arrangement which is especially adapted for a telephone exchange, which enables the instruments to be connected by a single wire, which dispenses with the use of an operator at the central station, which has automatic means for registering the messages sent by each subscriber, and which is provided with an automatic switching device by means of which one subscriber may connect with any other" (lines 10-19).
Date: December 5, 1893
Creator: Serdinko, John
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Pliers.

Description: Patent for pliers that has one jaw fitted with ribs and the other with grooves. This allows the pliers to clamp onto and kink a wire in an improved way.
Date: December 19, 1893
Creator: Neuhaus, Frank C.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department

Electric-Current Meter.

Description: Patent for an electric-current meter that measures "the amount of electricity passing over a given branch of derived or (if desired) line circuit, thereby indicating the amount of electricity used for the translating or other consuming devices in the circuit, having for its object the construction of an apparatus which will respond more accurately to the variations in the said currents and indicate more exactly upon a dial or dials provided for the purpose, the quantity of electricity which pas… more
Date: November 28, 1893
Creator: Mottram, William T.
Item Type: Refine your search to only Patent
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

Conduit Electric Railway.

Description: Patent for an underground conduit electric railway meant to propel cars. The conduit can be drained and kept dry, and a trolley attachment protects the conduit from dirt and water as well.
Date: December 5, 1893
Creator: de Voe, William R.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
Back to Top of Screen