US382599A - Camille a - Google Patents

Description

(No Model.)

v(). A. PAURE.

AUTOMATIC SWITCH FOR SECONDARY BATTERIES.

Patented May 8, 1888.

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UNITED, STATES PATENT OFFICE.

GAMlLLE A. FAURE, OF NEW YORK, N. Y., ASSIGNOR TO THE ELECTRICAL ACGUMULATOR COMPANY,'OF NEW YORK.

AUTOMATIC SWITCH F OR SECONDARY BATTERIES.

$PECIPICATION forming part of Letters Patent No. 382,599, dated May 8, 1888.

Application filed November 16, 1887. Serial No. 255,309.

To aZZ whom it may concern.

Be it known that I, OAMILLE A. FAURE, a citizen of the Republic of France, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Automatic Switches, of which the following is a specification, and for which I have obtained a Certificate of Addition to my French patent, No. 145,931, dated November 9, 1881, said certificate bearing date January 18, 1882.

My invention is an improvement in automatic regulators, and is especially useful in that system of lighting which embraces a dynamo driven from a wheel or axle of a moving car, a secondary battery supplied with electricity from the dynamo, and a series of electric lamps fed from either or both.

My object is to furnish a means for making and breaking the main circuit when the speed of the dynamo varies above or below a predetermined limit, and for regulating the electromotive force of the dynamo, so as to preserve its current substantially uniform.

I provide a mechanical device operated by the centrifugal force due to the speed of rotation of the armature,which acts to make the main circuit when the speed of rotation is sufficient to produce the requisite minimum electro-motive force and to break said circuit whenever the speed falls below this point. The

said device also operates a switch-arm to introduce and withdraw resistance with respect to a separate circuit containing the field-magnet coils of the dynamo, so that the dynamocurrent is rendered substantially uniform. This centrifugal regulator I place upon the armature-shaft in such a position that the divergence due to variations in centrifugal force is in a vertical plane; thus the evil effect due to thejolting of the car is compensated for. In case of the illustration any given jolt or shock will produce a deflection of one of a pair of governor-ballsin adirection to producea given effect; but the samejolt or shock will produce an equal and opposite effect upon the other ball, and the evil efi'eet is thus neutralized. I also provide two blade-springs upon which the terminals of the divided main circuit are re-- (No model.) Patented in France November 9, 1881. No. 145,931.

spectively carried. These springs preserve the continuity of the circuit by moving together or in contact within a considerable range, the result being that jolts, jars, and shocks to which the apparatus is subjected on a railway are ineffectual to produce a rupture of the circuit.

I will now describe my invention by reference to the accompanying drawing.

0 is the floor of a car located upon trucks having wheels W and axles A.

G andfare gear-wheels and belt mechanically connecting the pulley upon the armatore-shaft a of the dynamo D with. the axle A, operating to drive the dynamo.

B is a secondary battery having its termi- 6 nals electrically connected with the brushes of the dynamo. Main conductors l and 2 connect the lamps Z with the dynamo and battery.

3 is a derived circuit containing the'fieldcoils of the dynamo and a switch, operat-' ing to connect or disconnect a series of resistance-coils, r r, &c., with respect to said circuit. This switch consists of a series of insulated contacts, an arm making contact therewith pivoted at o, and a link, m, connecting 5 said arm to a blade-spring, s, fixed to a block of insulating material, I, to which spring one terminal of the divided lead 1 is connected. Spring 8 is also connected to block I and forms the other terminal of the divided conductor 1.

c is a collar fixed to armature-shaft a.

M is a mechanical device operated by centrifugal force. There. is a T-shaped piece on the end of shaft a capable of a movement equivalent to lengthening shaft a. \Weights or balls b b are pivoted, as shown, in'such a manner that under the influence of centrifugal force they act in a vertical plane to'produce a movement of the T-piece '15. These weights 1) are so placed that thejolts and jars o incident to railroad travel occur at right angles to the shaft upon which they are placed.

While the weights are in the position shown, thejolting due to the unevenness of the roadbed would not affect either. When they are in a position between that shown and ninety degrees of rotation, a jolt or jar would affect them equally and oppositely, and the evil of device M moves S)ll]l .sinto contact 'ith springs and closes the main circuit. -When this occurs, the switcharm n is on the first insulated contact, as shown, there is no artificial resistance in the field-magnet circuit, and the dynamo is generating an electro-motive 'l'orce ell'ective to charge battery 13 and raise lamps Z Z to incandesccnce. As speed of rotation increases the device M forces spring 8 s farther along, moving the switch arm 1) onto the second insulated contact, 0, and introducing the smallest artificial resistance into the circuit 8. This reduces the field-magnetism and the electro-motive force generated by the dynamo to the normal point. If the speed still increases, the springs s and s are still farther moved along, as is the switch-arm n, and a larger resistance, r, is introduced into the field-circuit 3. If the speed decreases, the reverse of the described operation takes place and the electro motive force is still preserved substantially uniform until the speed of rotation drops below the point where the mininum effective clectro motive force of charge is produced, when the springs s ands separate and disconnect the dynamo and battery.

iVhat I claim, and desire to secure by Letters Patent, is-

1. The combination of a car or vehicle, a dynamo-electric machine, a secondary battery in circuit therewith, a switch or circuit-closer in the main circuit, and a mechanical device, arranged as described, controlled by centrifu gal force and operating in a vertical plane to close said switch when the speed of rotation reaches a predetermined point, whereby the effect of jars and jolts upon the switch is avoided.

2. The combination of a dynamo-electric machine having its field-coils in a separate circuit, a switch or circuit-ehanger in said circuit, a switch or circuit-changer in the main circuit, and a device operated by the centrifugal force due to the speed of rotation controlling both said switches.

3. The combination of a dynamoelectric machine having its field-coils in a separate circuit, a switch or circuit-changer in said cir' cuit, a switch or circuit-changer in the main circuit, and a mechanical device for automati- Cally controlling both switches.

Signed at New York, in the county of New York and State of New York this 15th day of November, A. D. 1887.

GAMILLE A. FAURE.

Witnesses:

FREDERICK EDER, XVM. B. VANSIZE.

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