US1141127A - Electric signal. - Google Patents

Description

J. LIEVRE. ELECTRIC SIIGNAL.

APPLl CATl0N FILED FEB. 5. 1915,

m Mom JESEPH A/'l RE UNITED STATES JOSEPH LIEVIR'E, OF CORPUS CHRISTI, TEXAS.

ELECTRIC SIGNAL.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed February 5, 1915. $eria1No. 6,327.

To (ZZZ whom it may concern Be it known that l, JOSEPH Lnivnn, a citizen of France, residing at Corpus Christi, in the county of Nueoes and State of Texas, have invented certain new and useful Improvements in Electric Signals, of which the following is a specification.

The present invention relates to improve ments in electric signals, and is designed particularly for the purpose of providing an alarm or indicator especially adapted for use in connection with motors such as internal combustion engines.

The primary object of the invention is the provision of an electrically operated signal alarm adapted to be attached to the internal combustion engine in order to en ergize an alarm device in case the temperature of the water in the water jacket of the 'motor is excessive.

The invention consists in the adaptation of the principles of the thermostat to the water jacket of the engine casing in such manner that when a predetermined temperature is reached the signal will be electrically operated.

While shall hereinafter refer. to the invention as applied to an automobile motor or internal combustion engine, it will of course be understood that the invention is equally applicable for use in other 'connections to indicate predetermined temperature in water, air, and other fluids.

in the accompanying drawings 1 have illustrated one complete example of the physical embodiment of my invention constructcd accoirling to the best mode I have so far devised for the practical applies tion of the principles of my invention.

Figure l is a side elevation of the device applied to the water jacket of an internal combustion engine and dia 'rammatically indicating; the electrical connections. Fig. 2 is an enlarged sectional detail view showing the connection of the thermostat with the engine casing. Fig. 3 is a detail view partly broken away and partly in section showing the electrical conductors and connections of the thermostat.

ln the preferred embodiment of the in vention illustrated i the drawingthe device 'cted upon the water jacket or c pal con'ilnistion engine. u 'lnch in t by the numeral 1. This jacket is threaded at 2, and the threaded opening is adapted receive the hollow screw plug 3, which has a tapered screw threaded portion 4 adapted to fit in the threads 2 of the casing 1. This screw plug is hollow as indicated in Fig. 2, and has a tapered bore 5, and an enlarged counter bored threaded portion 6. The tapered bore 5 is adapted to form a seat for the lower end 7 of a bulb 8, and the bulb is provided with exterior teeth 9 that are threaded into the teeth of the counter bore 6. A head 10 is provided for the bulb, and it will be seen that the screw plug 3 may be screwed up on the threaded bulb against the head 10. This bulb is preferably of glass, and is provided with an integral stem 11 which, as seen is Fig. 1, is spiral shaped in order to form a compact thermostat which may be applied to the internal combustion engine, and not occupy excessive space. The stem 11 has a bore 12 extending approximately throughout its lengtln and this bore is adapted to form a path for the mercury which rises from the bulb 8.

Spaced at regular intervals throughout the length of the stem 11, are a series of rings 13 preferably of platinum, and these rings as best seen in Fig. 3, are embedded in the glass of the stem and project slightly beyond the periphery of the circular glass stem. Each of these platinum rings or hands is provided with a plurality of conductors 14, and these conductors which are in the form of pins project inwardly from the platinum ring through the glass stem and into the bore 12 of the stem. 'lhesc platinum rings, as before stated, are spaced at regular intervals. and the stem between the rings is marked or divided into spaces to indicate degrees of temperature as is usual on thermostats. Near the head 10 of the bulb a special ring 15 is embedded in the material oi the stem and is provided with the usual conductors 14, and this ring is connected hv a wire 16 to the metal of the water jacket 5 as shown in Figs. 1 and 2.

in Fig. 1. I have illustrated two sliding sleeves as 17 and 18, which are adapted to he moved on the stem 11. One of these sleeves as 17. has a wire 19 leading there from. and a bell Q0. and this wire 19 is connected to the water jacket 1 by the return wire 2i. The other sleeve 18 has a wire 22 connected therctoand a lamp and this wire also is connected to the return wire 21.

It will be noted that the end 7 of the bulb 8 projects beyondthe material of the screw plug, and in the case of a Water jacket, this end of the bulb will be in actual contact with the Water. Thus, should the water attain excessively high temperature or become unduly heated, the mercury Will rise from the bulb 8 and pass around through the bore 12 of the stem. The mercury is always up to the level ofthe conductors 14: of the ring 15, so that the ring 15 is at all times electrically connected With the Water jacket by the Wire 16.

In operation, if it is desired that the lamp 23 shall be lighted as a signal at a predetermined temperature of the Water, and also that the bell 20 shall ring at a predetermined higher temperature, as the heat of the Water adjacent the bulb 8 rises, the mercury rises in the stem until it contacts with the con ductors 14 on the rings 13 under the sleeve 18. The circuit is noW complete through the mercury, the conductors 14, the ring 13, sleeve 18, Wire 22, the lamp 23 is lighted, and the circuit is completed through the wire 21, the Water jacket 1, Wire 16, and ring 15 with its conductors 1 1. Should the temperature of the Water reach the predetermined height corresponding to that at which the sleeve 17 is set, the bell 20 is rung through the circuit "as completed through Wires 19 and 21.

The lamp 23 or bell 20., or both of them are mounted on the dash of theautomobile to which the motor is applied in position so that they can be seen or heard with facility by the occupant of the car, and when either or both of these signals is energized. they will give due notice to the occupant of the car of the existing conditions.

1 claim:

The combination with the motor Water jacket, of a hollow screw plug having a seat for a bulb therein, and screwed on to said bulb, saidbulb having an elongated stem With a bore therein and mercury in said bulb and bore, conductors and conductor rings spaced throughout the length of said stem, a me tallic sleeve slidable on the stem adapted to co-act with one of said rings, and an electric circuit including an alarm from said sleeve to the metal of the Water jacket and to an other point on the stem, substantially as de scribed.

In testimony whereof I a'liii: my signature in presence of two Witnesses.

JOE LIEVRE. Witnesses:

EDW. F. GLAss,

L. C. Wishes.

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