Abstract:
A process for measuring the distance of a fault between phases and the earth of an electric power transport line where one effects, at the moment when the faulty current takes a zero value, the ratio between the voltage of the faulty loop at the measuring point and a reference voltage representing the voltage drop equivalent to a faulty current in a given length of the loop in question. A device for measuring the distance of a fault between phases or the earth comprising means for elaborating a reference voltage representing a voltage drop equivalent to a faulty current in a given length of the faulty loop at the measuring point means for detecting the moment when the faulty current passes by a zero value, means for remembering the value at this moment of the voltage of said loop and the reference voltage, and means for effecting the ratio of these two voltages.
Abstract:
THE ELECTRONIC AUTOMATIC IGNITION ADVANCE ADJUSTMENT DEVICE FOR INTERNAL COMBUSITION ENGINE COMPRISES CONDUCTOR ELEMENTS SPACED OUT AND MOVED BY SAID ENGINE DEPENDING ON ITS ROTATIONS PEED, AN ELECTROMAGNETIC PROBE P DETECTING THE PASSAGE OF SAID CONDUCTOR ELEMENTS, AN OSCILLATING ASSEMBLY CONNECTED TO SAID PROBE, AN IGNITION COIL CONNECTED, ON THE ONE HAD, TO AT LEAST ONE SPARK PLUG OF SAID ENGINE AND TO SAID OSCILLATING ASSEMBLY, AND MEANS FOR MODIFYING THE TIME FOR SETTING UP THE STABLE OSCILLATORY RATING OF SAID OSCILLATING ASSEMBLY IN AGREEMENT WITH THE SPEED OF THE ENGINE.
Abstract:
The static correction device for advancing ignition controlled by an electromechanical or electronic detector incorporates a circuit for forming a signal received during the passage of a nonactive part of the cam and issuing a signal which partially charges a first condenser and discharges it during a time equal to the difference between the passage time of the nonactive part of the cam, and the charging time, a second charging condenser partially charging during a time inversely proportional to the speed during the passage of the nonactive part of the cam and completely discharging after that with a current proportional to the voltage at the terminals of the first condenser. The end of the discharge of the second condenser trips a temporization which is a function of the speed and interrupts the primary current of the ignition coil, by the intermediary of an amplifier circuit, so as to produce an induced current in the secondary of the ignition coil.
Abstract:
ATTACHED TO AN NH2-CS-NH2 GROUP, R BEING A CARBONACEOUS RADICAL OF A PHENOL-ALDEHYDE OR OF ITS ETHEROXIDE DERIVATIVES.
NH2-C(=S)-NH-N=CH-R
AN ACIDIC ELECTROLYTIC SOLUTION FOR DEPOSITING ZINC ON VARIOUS PARTS COMPRISING, IN A DEMINERALIZED AQUEOUS SUPPORT, A HYDRATED ZINC SULFATE, AN AMMONIUM SULFATE, A THIO-SEMICARBAZONE COMPOUND ATTACHED TO A THIO-UREA GROUP AS A BRIGHTENING AGENT, AND A NON-IONIC MOISTENING AGENT. TO OBTAIN THE BRIGHTENING AGENT, A PHENOL ALDEHYDE IS MADE TO REACT WITH THIO-UREA IN A HYDROALCOHOLIC MEDIUM, A THIOSEMICARBAZIDE COMPOUND IS PREPARED, WHICH IS DISSOLVED IN A HYDROALCOHOLIC SOLUTION AND WHICH IS ADDED TO THE PRODUCT OF THE PHENOL-ALDEHYDE AND THIO-UREA REACTION SO AS TO OBTAIN A COMPOUND OF THE FORMULA:
Abstract:
A PNEUMATIC GAP DETECTOR FOR A FORCE MICROMETER BALANCE AND SIMILAR DEVICES HAS A BALL FIXED TO A MEMBER WHOSE POSITION GAP IS TO BE DETECTED. THE GAP DETECTOR HAS A FIRST AND SECOND PAIR OF NOZZLES WITH THE BALL BEING PLACED BETWEEN THE FIRST PAIR OF NOZZLES. THE DETECTOR ALSO HAS A PRESSURE CHAMBER SURROUNDING ONE OF THE SECOND PAIR OF NOZZLES FORMING A PNEUMATIC DIFFERENTIAL AMPLIFIER. A PRESSURE DETECTOR IS CONNECTED TO THE PRESSURE CHAMBER OF THE AMPLIFIER TO DETECT THE POSITION GAP.