US276704A

US276704A - moses

Info

Publication number: US276704A
Authority: US
Publication date: 1883-05-01
Anticipated expiration: 1900-05-01

Description

( 0 Model.)

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UNITED STATES PATENT OFFICE.

OTTO A. MOSES, OF NEW YORK, N. Y.

VOLTAlC-ARC LAMP.

SPECIFICATION forming part of Letters Patent No. 276,704, dated May 1, 1883. Application filed October 26, 1882. (No model.)

To all whom it may concern Be it known that I, OTTO A. MOSES, of New York city, in the county and State of New York, have invented a certain new and useful Improvement in Voltaic-Arc Lamps, of which the following is a specification.

My invention relates to regulating mechanisms for voltaic-arc lamps for regulating the feed of the upper or positive carbon-electrode, wherein the core or armature of the operating solenoid or magnet is divided, and is located within the carbon-carrying tube, making contact with the walls of the same, such tube be ing filled with liquid. The parts ofthe divided core or armature repel each other, which action isassisted or intensified by an intensifier located upon the outside of the carbon-carryin g tube.

The intensifier heretofore employed by me was made in a single solid piece, and the object of the present invention is such an improvement upon that construction that a more even and uniform movement will be produced. This I accomplish by the division of the intensifier into a number of indepeudently-movable parts, which press equally upon the carhon-holding tube and act evenly upon the magnetic brush or the divided core or armature of the controlling solenoid or electro-magnet, making a uniform and steady light.

The improved intensifier is composed preferably of a number of balls or rollers of magnetic material, which balls or rollers are held together by a wire ring passing loosely through them, so that they have the desired extent of independent movement. This ring of balls or rollers is limited in its vertical movement by stops or by an inclosingcage, and the balls or rollers work freely by a rolling movement upon the carbon-holding tube, as they are attracted by the solenoid or electro-magnet acting upon the magnetic brush to increase the repulsion between its parts. This brush is preferably composed of a number of wires of magnetic material secured at one end to the core or armature playing within the carboncarrying tube, and bearing outwardly against the walls of such tube. The action of the solenoid or magnet and the intensifier serves to force the brush with greater or less pressure *into contact with the tube for the purpose of controlling its downward movement. The brush or divided core or armature is supported by a spring at its upper end, (not shown,) and rests in liquid within the carbon-holding tube,

the quick and forcible vertical movements of the carbon-holding tube being produced by the vertical movements of the brush or divided core or armature through the medium of the liquid with which the tube is filled.

A further object of the invention is to produce a simple and efficient device for holding the lower carbon-electrode ot' the lamp for allowing it to be readily centered or brought into line with the upper carbon, and for peu mitting of an upward adjustment by hand of such lower carbon. This is accomplished by the employment of a tube in which the lower carbon is placed, the tube being split at its upper end and provided with a clamping-ring for holding the carbon. This tube has secured to it, or made in one piece therewith, a disk pro vided with a concave lower face and resting upon the lower crossbar of the lamp-frame. The tube passes through an opening in the lamp-frame, which opening is large enough to permit a limited lateral adjustment of the tube in any direction. A disk having a concave upper face is screwed upon the tube, and is forced against the lower side of the cross-piece of the lamp-frame. The proper position of the lower carbon in line with the upper carbon can be first secured and the parts then rigidly secured in position by turning up the lower disk. The lower carbon can be adjusted vertically at any time byloosening the clampingring at the upper split end of the tube.

In the accompanying drawings, forming a part hereof, Figure 1 is a vertical section of the principal operative parts of the lamp, and Fig. 2 a cross-section of the carbon-holding tube above the intensifier.

A is the solenoid or hollow electro-magnet, the coils of which are in series with the carbon-electrodes. From the head of A rises the supporting tube 13, carrying a spring (not shown) connected adjustably with the rod 0, as will be readily understood.

1) is the tube carrying the upper carbonelectrode, E. This carbon-holding tube, which is filled with glycerine or other suitable liquid, F, passes through the solenoid or hollow magnet, being guided therein, and enters the supporting-tube B. The rod G extends down into tube D and carries on its lower end the divided core or armature. This is composed preferably of a body, G, of magnetic material, to which are attached wires H, also of magnetic material. These wires, forming what 1 term the brush, are secured at their upper ends to the body G, and extend downwardly and outwardly into contact with the tube 1).

I is the divided intensifier, limited in its vertical movement by arms (t or a suitable cage. It is composed of balls or rollers b,ot' magnetic material, carried by a ring, 0, and surrounding the tubeD. The ring passes loosely through the rollers, so that they may have an independent movement thereon. This annular intensifier always retains a horizontal position and acts uniformly upon the brush. It has a rolling movement upon the carbon-carrying tube, playing freely upon the same. The upper carbon, E, is attached to the rod D by means of a split socket and clamping-ring, as in said application.

The lower carbon, K, enters a tube, L, provided with a disk, M, having a concave lower side, (I, as shown. The disk M rests upon the lower cross-piece, N, ofthelampt'rame, through an opening, 0, in which the tube L passes. A disk,O,having a concave upper side, f, screws upon the tube L and strikes the lower side of the cross-piece N. The opening 0 is large enough to permit the tube L to be moved a limited extent in any horizontal direction, in order that the lower carbon may be brought into line with the upper carbon. The concave faces of the disks assure a rigid holding of the parts. The carbon is held in the tube L by a screw-ring,g, turning upon the split upper end, h, of the tube, and can be adjusted vertically by loosening such ring, and held at any desired point by again tightening the ring.

What I claim is- 1. In regulators for are-lamps, the divided intensifier, substantially as set forth.

2. In regulators for arc-lamps, the combination, with the solenoid or electro-magnet, the carbon-carrying tube, and the inclosed divided core or armature, of the divided intensifier external to said earboncarrying tube, substantially as set forth.

3. The combination, with the solenoid or electro-magnet, the carbon-carrying tube, and the inclosed brush, of the annular intensifier composed of balls or rollers having a limited independent movement, substantially as set forth.

4. In arc-lainps,the combination, with frame N, having opening c, of the tube L, having carbon-clamp at its upper end, the concave disk attached to said tube, and the concave disk engaging with a screw-thread on said tube, substantially as set forth.

This specification signed and witnessed this 11th day of October, 1882.

OTTO A. MUSE Witnesses:

RroHD. Drnn, H. W. SEELY.