US393405A - Arc light - Google Patents

Description

(No Model.) 2 Sheetssheet 2.

D. B. TURNER.

I"ml!IIIIIIIIIQ- F are detail views of the clutch.

DONLEE B.

PATENT TURNER, OF CHICAGO, ILL NOIS.

ARC LlGHT.

SPECIPICAI'IDII forming part of Letters Patent No. 393,405, dated Hai a-titer Application filed May 7, 1888. Serial No. 273.091. .(No model.)

To aZZ whom it may concern:

Be it known that I, DONLEE B. TURNER, a. citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented acertain new and useful Improvement in Are Lights, of which the fol lowing is a specification.

My invention relates to are lights and has for its object to provide a convenient and cheap lamp in which both carbons are fed. This object [accomplish by means of the mechanism illustrated in the accompanying drawings, wherein Figure 1 is a side View of the upper portion of my lamp. Fig. 2 is a vertical section through the same. Fig. 3 is a side view of the entire lamp with certain portions hroken away. Fig. 4 is a diagrammatic view of the lamp out of circuit. Fig. 5 is a diagrammatic view of the same in circuit. Figs. 6 and 7 Fig. 8 is a cross-section and detail of the reciprocating core.

Like parts are indicated by the same letters in all the figures.

A isthe cover or top of the lamp, in which is secured the carbon-protector B, and from which depend the tubular arms C- O. These arms are connected about midway by the nonheat conducting plate D and below by the base of the lamp, which carries the carbonprotector B above.

G is the upper carbon; G, the lower.

H is a rock-shaft journaled on lugs which project from the tubes 0 C, and having pro jecting from it the arm H, which is upwardly drawn at its outer extremity by the spiral spring H", also the arm H, which is pivoted at its extremity to the rod H*, adapted to reciprocate within the tube 0. The lower end of the rod H is pivoted to the lever H which in turn is pivoted to the opposite tubular piece, (J, at the point H. This lever H is bifur cated and has loosely between its portions the clutch-block J, through an aperture in the center of which passes the carbon G, and which is also provided with one or more inclined holes, J, which terminate in said apen ture. In each of said holes is a ball, J,which bears against the carbon, and thus keeps the same from slipping downwardly in the clutch. I

\Vithin the base or cross-piece E is formed the elutchblock K,similarly constructed, having a hole, K, with a ball, li therein. To this block K, which forms part of the base E, is attached the carbonproteetor F. To the rock-shalt H is rigidly secured the arm L, which is provided above with the slot L to engage the pin L on the reciprocating core M. This core is composed at one end of iron and at the other of nonmagnetizing substance, as brass, the two being brought to gether at the point M, and each of these ends terminatcs in a part-cylindrical portion, ill" M, which move, respectively, within the coils of the magnets, each of which restsupon the marble roller or hall 31* M to permit the core to easily reciprocate, said marble moving within the magnets.

To the lower end of the carbonprotector B are attached the guideways N N, in which move the arms N N, to which is attached the clutchblock N". This clutch-block encircles the carbon G and has the inclined hole N marble N", and loose pin N", the latter adapted to engage the crosspiece D when the clutchblock N is lowered.

O is a binding-post, to which the line-wire O is attached. 0 is a second binding-post, to which the other terminus of the line-wire O is attached.

0* is a heavy conductor passing from con nection with the binding-post O to the internal winding O on the magnet O. This conductor 0 passes thence to the contactpoint O, which receives the pivoted lever 0 t0 which the conductor 0 is attached. This latter connects directly with the binding'post O". The light-conductor l? in like manner passes from the binding-post O to the fine winding P on the magnet O and thence directly to the binding-post 0 From the binding-post 0 connection is made directly, as indicated in the diagrammatic view, by the conductor It with the upper carbon, while from the lower carbon proceeds the conductor R, which passes into the electro magnet It and thence to the bindingpost.

The use and operation of my invention are as follows: The position of the parts shown in Fig. 4the diagrammatic viewillustrates the lamp when out of use. In this position it will be when from any defect in the operation of the carbons the lamp fails to work, thus cutting itself out automatically. The current then enters through the line-wire 0, binding post 0, conductors 0* and P, both windings of the magnet O, conductor P, directly to the binding-post 0*, onto the line-wire O and by the heavy conductor 0 to the contact-point O lever O conductor 0", into the bindingpost of the line-wire. If the lamp is in condition for successful operation, this current through the magnet O will move the reciprocating core M toward the left, thus operating the rock-shaft H, and it will continue this motion until the rock-shaft has rotated so far as to lower the carbons until the arc is formed. XVhen this takes place, a portion of the current passes from thebinding-post 0 along the conductor B, through the carbons, conductor It, through the magnet R", conductor R, bind ing-post O", and line wire 0 thus energizing the magnet R NVhen this occurs, the lever O is drawn up against the magnet It and the connection across the conductor 0" is broken and a steady current thrown through the carbons. As this current varies in intensity, owing to the varying distance between the carbons, it keeps the reciprocating core M in motion, so as constantly to keep the carbons adjusted the proper distance.

It will be observed that as the rock shaft moves it raises or lowers both carbons simultaneously so long as they are held firmly by the clutches; but the lower one is moved only one-half the distance of the upper, as it is sus pended about midway. The lever H and the arms which operate the upper carbon,and also operate the bar H from the lever 1-1 are of the same length. \Vhen the current through the magnet 0 becomes too strong on account of the deflecting of the current through the carbons, the rock-shaft is moved fartherin its bearings until the upper clutch, N", is lowered, so that its releasing-pins engage the plate D when the carbon is made free and drops downwardly upon the other point. If it drops the entire distance, so as to engage the point of the lower carbon, a strong current passes through both, and there is an immediate reaction upon the rock-shaft, thus causing both carbons to ascend slightly, the upper more rapidly than the lower, and thus the arc is formed.

Having thus described my invcntion,what I claim, and desire to secure by Letters Patent, is as follows: I

1. In an are light, the combination ofa rockshaft with one arm, a retracting-spring attached thereto, which tends to turn the shaft in one direction, a second arm connected with the core of the magnet, the motion of which magnet operates the sl1aft,and two other arms and means whereby the carbons are supported on the latter arms, so that as the current through the magnet varies the position of the rock-shaft changes, and thus the relation of the carbons to each other is varied to effect the are.

2. In an are light, the combination of the carbons with clutches, the clutch for the lower carbon consisting of two blocks containing inclined apertures and locking-balls therein,and the clutch for the upper carbon consisting of a single aperture and locking-balls therein and a stop block or cross-piece about the carbon and beneath the upper clutch, and pins projecting from the upper clutch -bloek and adapted to engage and thus raise the lockballs when the clutch is lowered upon the cross-piece, and a rock-shaft from which both carbons are suspended, substantially as shown and described.

3. In an are light, the combination of the .l'fiONLEE B. TURNER.

XVitnesses:

Faancrs W. Pnnnnn, CELESTE I. CHAPMAN.

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