Orman L Blenman

42335604, Nov 11, 1980

Aug 24, 1978

5/936351

Orman L. Blenman - Buffalo NY

G01R 1914
G01R 3102

324133

Electrical testing apparatus comprising a pair of input probe terminals, a multi-position mode selection switch, a source of direct voltage, an NPN transistor and a PNP transistor, and a pair of light-emitting diodes each connected in the collector-emitter circuit of a corresponding transistor and poled for conduction when the corresponding transistor is on. In one position of the switch connecting one of the input terminals to both bases of the transistors, an alternating voltage between the input terminals is indicated by both of the light-emitting diodes being energized, and a direct voltage between the input terminals is indicated by only one of the light-emitting diodes being energized, the particular one being determined by the polarity of the direct voltage. In either of two other positions of the switch connecting one of the input terminals to either of the light-emitting diodes, if a closed circuit exists between the input terminals one of the light-emitting diodes is energized depending upon the polarity, and if an open circuit exists neither diode is energized.

40544230, Oct 18, 1977

Jul 21, 1975

5/597342

Orman L. Blenman - Buffalo NY

C10H 500

48 2

A method and apparatus for generating acetylene gas by reacting water and calcium carbide wherein a tank containing water is pressurized by a pump in a manner feeding the water to another vessel wherein it reacts with particulate calcium carbide to generate acetylene gas. A portion of the acetylene gas is returned through a pressure regulator to the water tank in a manner maintaining regulated system operating pressure on the water to sustain the reaction without overproduction of the gas. The apparatus can be located in a vehicle for on board generation of acetylene gas as fuel for the internal combustion engine thereof.