US531698A

US531698A - Charles a

Info

Publication number: US531698A
Authority: US
Publication date: 1895-01-01
Anticipated expiration: 1912-01-01

Description

(No Model.)

0. A. PFLUGER. ELECTRIC ARC LAMP.

No. 531,698. Patented Jan. 1, 1895.

mj q m cmmti Ar'nuaifi ATTUWNFY UNITED STATES PATENT OFFICE.

CHARLES A. PFLUGER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE STANDARD ELECTRIC COMPANY, OF SAME PLACE.

ELECTRIC-ARC LAM P.

SPECIFICATION forming part of Letters Patent No. 531,698, dated January 1, 1895.

Application filed April 6, 189A. Serial No. 506,429. (No model.)

.To on whom it may concern:

Be it known that I, CHARLES A. PFLUeER, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Arc Lamps, of which the following is a specification.

My invention relates to are lamps and has for its object the production of an improved arc lamp, of which the following is a description.

Referring to the accompanying drawing, which is a diagrammatic View of the lamp, A is the base of the lamp to which the electromagnets are attached. The movable parts of the lamp are supported between standards attached to said base, one of which A is shown. These standards are in electrical connection with the base A, and are connected to the positive binding post B, the connection to one of such standards of course being sufficient. To the support A is attached a frame A Pivoted to the frame at the point A is the lever A to which is attached the core C of the shunt magnet C. Good electrical contact is obtained between the frame A and lever A by the spring A. A dash pot C is attached to the end of said lever A. To this lever A is attached the piece A adapted to electrically connect said lever with the stop A. Said stop is attached to the support A, but insulated therefrom. Connected to this step A is the wire A leading to the resistance coil A the other end of said coil being connected with the negative binding post B. A rod D connects the clutch D with the lever A, and is insulated therefrom at D This clutch is provided with an arm D the end of which rests upon the insulating strip D A spring D connects the end of the arm D with the stationary piece D The series magnet E is connected to the lower carbon and to the negative binding post B. The armature E of the series magnet is pivoted at one end, the other end being connected to the lever E by the rod E Said lever E is pivoted to support A and is con nected to lever A by the spring E. The cur rent is conveyed to the carbon rod F by the brush F which is electrically connected to the base A. This carbon rod F is so arranged that its motion will be stopped before the can bon holders come together, so that they will not be injured when the lamp is not trimmed or recarboned at the proper time.

It is evident that the various parts may be changed in construction, form and arrange ment without departing from the spirit of my invention, as I have only shown a diagrammatic view in order to simplify the drawing, and I therefore do not wish to be limited to the construction shown.

The use and operation of my invention are as follows:

When the lamp is in operation the main circuit is traced as follows: from binding post B to support A, thence to base A, thence to brush F and carbon rod F, thence through carbons, thence through series magnet E and thence to binding post B.

The shunt circuit is as follows: from base A through shunt magnet C and thence to binding post B.

As shown in the drawing, no current is flowing through the lamp. If now the cir cuit through the lamp is completed, the se ries magnet E becoming energized attracts its armature E and by means of the rod E rocks the lever E on its pivot. Then this occurs the lever A is moved upward by means of the spring E and the connection between the piece A and stop A is broken. Since the clutch D is connected to said lever A by the rod D, said clutch will be moved upwardly carrying with it the carbon rod F and thus separating the carbons. As the carbons are separated some of the current is directed through the shunt coil C, and when the arc becomes too large the shunt magnet, pulling down on the core C, lowers the lever A and hence clutch D by means of rod D, and feeds the carbons together.

During the normal operation of the lamp the armature E of the series magnet remains stationary in its attracted position, and hence 9 5 the lever E is not moved. The spring E allows a movement of the lever A without any movement of the lever E and draws the said lever A back to its normal position so that the clutch holds the carbon rod, after the carbon has been fed enough to reduce the strength of the current in the shunt magnet.

IOO

It Will thus be seen that the series magnet only strikes the arc, while the shunt magnet does the feeding. If for any reason the carbon fails to feed, the current in shunt magnet Okeeps increasing until the lever A is pulled downwardly so that the piece A comes in contact with the stop A. When this occurs the current is shunted around the carbons and series magnet, and through the resistance A and the lamp is cutout of circuit without breaking the circuit through the remaining lamps. The resistance A in this shunted circuit is necessary to make the resistance through said shunted circuit sutlioient to force the current through the series magnet when the carbons are together, in order that the lamp may be started.

The regulating mechanism is mounted upon a single base or plate, thus preventing the displacement of the parts.

I claim 1. In an arc1amp,the combination of a main circuit magnet or solenoid, ashunt magnet or solenoid, a lever for the latter, a system of levers associated with the main circuit magnet, a spring connecting such last system with the shunt magnet lever so that the latter is lifted and elastically suspended by the action of the main circuit magnet, a clutch for the carbon rod and a connection therefrom to the shunt magnet lever.

2. The combination in an arc lamp of a shunt and series coil, a pivoted lever controlled by the series coil, a second pivoted lever controlled by the shunt coil, and an elastic connection between the two lovers, a clutch associated with one of the carbons of the lamp and connected to the lever controlled by the shunt coil, whereby said clutch is moved only by the movement of the shunt coil lever.

3. In an arclamp, the combination ofa main circuit magnet orsolenoid,a shunt magnet or solenoid, a lever for the latter, a system of levers associated with the main circuit magnet, a spring connecting such last system with the shunt magnet lever so that the lat ter'is lifted and elastically suspended by the action of the main circuit magnet, a clutch for the carbon rod and a connection therefrom to the shunt magnet lever, and a stop associated with the shunt coil lever by which a circuit is completed around the series magnet when the carbons are too far apart.

CHARLES A. PFLUGER.

Witnesses:

WALTER J. GUNTHORP, FRANCIS W. PARKER.