US559649A - wheless - Google Patents

Description

2 Sheets-Sheet 1. M. WHELESS. ELECTRIC ARG LAMP.

PatentedMay 5, 18961 (No Model.)

(No Model.) 2 Sheets-Sheet 2.

M. WHELESS.

ELECTRIC ARG LAMP.

No. 559,649. Patented May 5, 1896.

ANDREW E GRAHAM PHOTO LPr-1D WASHINGTON DC UNITED STATES PATENT OEEICE.

MALONE VI'IELESS, OF VASIIINGTON, DISTRICT OF COLUMBIA, ASSIGNOR TO THE VHELESS ELECTRIC LAMP COMPANY, OF SAME PLACE.

'ELECTRIC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 559,649, dated May 5, 1896.

Application filed January 29, 1896x Serial No. 577,804. (No model.)

To @ZZ whom it may concern: inclosed in -a globe A of any suitable kind.

Be it known that I, MALONE WHELEss, of That shown in the drawings is of the same gen- Va-shington city, in the District of Colum` eral type as that of the well-known Pintsch bia, have invented certain new and useful Imlamp, now so generally inuse on railway-cars,

5 provements in Electric-Arc Lamps, of which the lower part of the globe, made of glass or 55 the following is a specification. y othertranslucent or transparent material, be-

My invention has relation to feed and reguing hinged on a horizontal aXis to a metallic lating devices of an electric-arc lamp, such dome, in which is an outwardly-opening reas set forth in my allowed application filed lief-valve a to give vent to the heated and 1o December 7,1895, Serial No. 571,379, on which expanded air. The feed-regulating works of 6o Letters Patent will issue of even date herethe lamp extend down through this dome. with-that is to say, devices comprising a These works consist in the main of the cenfeed magnet or magnets in the arc-circuit of tral tubular carbonfholder B for the upper the lamp and feed mechanism controlled movable and positive carbon X, the two solen- 15 thereby in combination with aregulator-magoids C, the tubular stems c, and the rods d, 65 net, also included in said circuit either divertically movable in said stems, attached at rectly or in a shunt thereto, a shunt or short their upper ends to the cores of the solenoids circuit around the arc and feed and regulator and at their lower ends to opposite ends of magnets completed through either one of two the yoke or cross-bar e, provided with a cen- 2o sets of contacts controlled by the regulatortral hub or sleeve e', fitting and vertically 7o magnet, according as the potential of the arcmovable on the outer carbon-holder I3. The circuit materially exceeds or falls below the yoke by links f is attached to the arms of normal. gripping-cams g, pivoted in a sleeve g', fitting The invention refers to certain improveand vertically movable upon the carbon- 2 5 ments designed to enable the lamp to be used holder and adapted to workthrough slots I) 75 more conveniently in either an arc or an inin the carbon-holder against the carbon X candescent electric circuit, or in other words therein. Stop-rings 72., one above and one whether connected up in circuit, in series, or below the sleeve g and adjustable upon the in multiple; and also to means by which the carbon-holder B, limit the extent to which 3o lamp will be more surely short-circuited in the sleeve can move up and down thereon. 8o event of the upper carbon dropping below the At the lower end of the positive-carbon feed or gripping devices, as it may do when holder is a disk i', of asbestos or other refracit has been nearly all consumed. tory material, to shield the works from the The improvements will first be described heat and from carbon deposit.

3 5 by reference to the accompanying drawings, The works above the globe A are sur- 85 and will then be more specifically pointed out rounded by a ventilated shell D, attached to in the claims. the closed case E, on the floor of which are In the drawings, Figure l is a sectional side secured the feed and regulator magnets. elevation of a lamp embodying my improve- The stems c are attached at their upper 4o ments. Fig. 2 :is a sectional side elevation of ends to the under side of the floor of case E 9o the same at right angles to the plane of eleand at their lower ends to the top of the vation in Fig. l. In this gure a portion of dome of the globe A. the counterweight mechanism is obscured in The current enters the lamp at the bindn order not to conceal the parts. Fig. 3 is an ing-posts F and leaves it at the binding- 45 enlarged section on line 3 3, Fig. l. Fig. 4 is post F.

a section on line e 4, Fig. 3, illustrative of Attached to the floor of the case E is the the regulator-magnet and its appurtenances. usual manually-operated cut-out switch G, Fig. 5 is a diagram of the circuit connections having one contact, 7c, connected to bindingof the lamp. post F and the other contact, 7c', connected to 5o The arc or light-givin g part of the lamp is binding-post F. XVhenever the two contacts 1oo are in electrical communication through the movable member of the switch, the current passes through them and the binding-posts without going through the lamp. The countcrweight for facilitating the lifting action of the feed-magnet consists of a rolling weight having the form of a flanged roller, which runs on and is held in a track-like lever m. This track is fast to a cross-piece n, pivoted at o in a suitable bracket or hanger O, attached to and depending from the dome of globe A, as seen in Fig. 2. From the trackformed counterweighted lever thus arranged project forward to steady pins p beneath yoke e, one on' each side of the hub e. One only of these pins is indicated in Fig. 1.

The regulator-magnet is shown at H, having armature-lever H', pivoted at l and ccnnected at or near one end to the core 2 of solenoid H. At its other end is an insulated contact 3, which plays between the two stationary contacts 4 5. The armature-lever is provided with a weight s, which has the saine function as the similarly-lettered spring in my aforesaid application, Serial No. 571,37 9.

Y is the lower carbon, and Y is its holder.

The contacts 3 4 5, as seen in Fig. 5, are in a shunt 9 around the are, the feed solcnoids, and the regulator-magnet, the two fixed contacts 4 5 being in parallel in said shunt-circuit.

The are or lamp circuit is shown at 7. The regulator-magnet H is energized from the arccircuit, not directly, but bya high-resistance shunt-circuit S, in which it is included.

A resistance R, as in my aforesaid application, is included in the shunt-circuit 9 around the arc and the feed and regulator magnets. Under this arrangement whenever the potential of the current in the arccircuit materially exceeds or falls below the normal the shunt-circuit 9 will be closed between one or the other set of contacts, as the case may be.

In order to adapt the lamp to be conveniently used either in an arc or in an incandescent circuit, I arrange things so that the lamp itself shall contain all the accessories needed to permit it to be used in either connection. To this end I provide it with a resistance R', (in addition to the coil R already described,) which can be connected up or not in the lamp-circuit, as desired. The resistance R' is typified in the diagram Fig. 5 as consisting of three coils. It and the resistance R are contained in a receptacle R2 on top of the lamp, and means are provided by which the resistance R can be cut into or out of the lamp-circuit. These means are typied in Fig. 5 as a shunt o around the resistance R and a switch 1 by which the shunt may be opened or closed, as desired. In practice, however, connections will be provided by which the binding-post F can be connected or not to the resistance R, as desired. This resistance is proportioned to the standard current employed on an incandescent circuit, and is used only when the lamp is placed in multiple in such a circuit. Then the lamp is used as a series lamp, the resistance R is cut out. By this convenient arrangement the lamp in itself contains all the accessories which enable it to be put to either use without further preparation Vhen the upper carbon is nearly used up, there remains but a short stick. NVhen still further consumed, it will finally, in dropping,

get below and out of control of the grippingcams g. This stub will then rest permanently upon the lower carbon, thus permanently closing the lamp-circuit, and, through the consequent energizing of the regulatormagnet, holding the shunt 9 open. To prevent any such occurrence, I provide in the upper-carbon holder an inner lining t of insulating material, such as asbestos, which extends up far enough to insulate from the holder any piece of carbon short enough to fall below and out of reach of the grippingcams g. The shunt S, in which the regulator-magnet is included, is in this instance around the arc, and to prevent the current under these conditions from passing over the shunt I provide a cut-out 10 ll in said circuit connected to and operated by the feed mechanism in such manner as to open the regulator-circuit whenever the upper carbon is not between the gripping-cams. In any such event there is nothing to offer resistance to an abnormal descent of the cross-head e, and I avail of this abnormal movement to open the circuit 8 of the regulator-magnet. To this end the circuit 8 is closed through a fixed contact 1l, Fig. 2, and a movable contact l0, which is pivoted at o to the counterweighted lever-supporting hanger O, and extends across and rests upon the cross-head c. The two contacts are always in electrical connection so long as the conditions in the lamp are normal, but whenever the cross-head descends abnormally low the contact l0 will be free to drop, and will do so, thus separating from contact H and breaking the circuit 8.

Having described my improvements and the manner in which the same is or may be carried into effect, what I claim, and desire to secure by Letters Patent, is-

l. The feed magnet or magnets included in the arc-circuit of the lamp and the feed mechanism controlled thereby, in combination with the regulator-magnet included in a high-resistance shunt from that circuit, and a shuntcircuit around the arc and the feed and regulator magnets, completed through either one of two sets of contacts, controlled by the regulator-magnet, according as the potential of the arc-circuit materially exceeds or falls below normal, substantially as hereinbefore set forth.

2. In an electric lamp, and in combination, the lamp-circuit, the feed-magnets included therein, the regulator-magnet energized from the lamp-circuit, the shunt around the arc IOO IIO

IZO

and the feed and regulator magnets completed through eitherone of two sets of contacts controlled by the regulator-magnet, the resistance R and means whereby the same may be excluded from or included in the lamp-circ uit at will so as to adapt the lamp for use in either an are or an incandescent circuit, substant-ially as and for the purposes hereinbefore set forth.

3. In combination, the resistances R R mounted in and carried by the lamp, the lamp-circuit including the feed-magnets, the regulator-magnet energized from the lampcircuit, the shunt around the arc and the feed and regulator magnets containing the resistance R and completed through either one of two sets of contacts controlled by the regulator-magnet, and means for including the resistance R in, or cutting it out from, the

lamp-circuit as desired, substantially as and for the purposes hereinbefore set forth.

4. The combination of the feed mechanism, the lamp-circuit including the feed-magnets, the regulator-magnet in a shunt to the lampcircuit, the shunt-circuit around the arc and the feed and regulator magnets, completed through either one of two sets of contacts controlled by the regulator-magnet, and a circuit-breaker connected to and operated from the feed mechanism to open the circuit of the regulator-magnet, at the time and in the manner, substantially as hereinbefore set forth.y

In testimony whereof I have hereunto set my hand this 28th day 0f January, 1896.

MALONE VVHELESS.

Witnesses:

FREDERIC B. KEEFER, EWELL A. DICK.

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