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in subjects: "circuitry"

Electric-Current Meter.

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: Patent

Partner: UNT Libraries Government Documents Department

Cut-Out for Electric Circuits.

Patent for a new and improved cut-out for circuits. This design consists in "[a] cut-out for an incandescent lamp embodying, essentially, a magnet or solenoid in derivation from the filament, spring-contacts completing the circuit from the filament to the line on one side, and an armature-lever electrically connected with said magnet adapted to disrupt the circuit between said contacts and maintain the continuity of the circuit through itself" (lines 93-101).

Date: October 30, 1888

Creator: McDill, Henry C.