US1091715A - Electric lamp. - Google Patents

Description

CLP. STEINMETZ.

ELECTRIC LAMP.

APPLICATION FILED MAY 9, 1904.

1&9 1 7150 Patented. Ma1131, 19m.

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G. P. STEINMETZ.

ELECTRIC LAMP.

APPLICATION FILED MAYQ, 1904.

Patented Mar. 31, 1914.

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INVENTOR Charles I? S'Ee i nmetz,

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WITME 5E5:

0'. P. STEINMETZ. ELECTRIC LAMP. APPLICATION FILED MAYQ, 1904.

1 @@1 715@ Patented Mar. 31, 19M.

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INVGHTOR Charle s I? Steinmefiz;

UNITED STATES PATENT orruon;

CHARLES P.

STEINMETZ, OF SCHE-NECTADY, NEW YORK, ASSIGNOR Tn GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

ELECTRIC LAMP.

Specification of Letters Patent.

Patented Mar. 31, 191-1.

Application filed May 9, 1904. Serial No. 207.023.

To all whom it may concern:

Be it known that I, CHARLES P. STEIN- ME'rz, a citizen of the United States, residing at Schenectady, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Electric Lamps, of which the following is a specification.

My present invention relates to electric lamps and comprises certain improvements whereby the radiations from sources of light of different colors may be so combined and intermingled as to produce a joint product.

In carrying out my invention I combine with the light from a mercury vapor lamp or lamps that derived from an incandescent lamp or lamps so as to produce a resultant illumination, practically the same as that due to white light. In order to effect the combination of lights from these two sources I support the lamps within a globe of the type shown in Patent-No. 563,836 Blondell and Psaroudake, July 14, 1896, and now well known under the term holophane. The efit'ect of a lobe ofthis character is to intermingle the ights from the two sources in such a manner that the globe appears to radiate, not the yellow light of the incandescent lamps or the greenish white light of the mercury lamp, but a light which is a combination of the two and which by a proper relative roportion of the two sources approaches in c aracter ordinary day-light.

The featuresof novelty which characterize myinvention are pointed out wit. particularity in the appended claims. The invention itself, however, will be better understood by reference to the following description taken in connection with the accompanying drawings, in which,

Flgure 1 represents, by way of illustration, one of the numerous embodiments which my invention may assume in practice. In this figure the lamp is shown in its completed form. Fig. 2 is a-view partly in cross section of the lamp, and Fig. 3 is a view of a portion of the lamp-supporting frame work.

The light-dispersing globe in electric lamps are located, ma of course, assume various forms. In t e drawing, however, the particular form shown at 1 is somewhat acorn-shaped, although in general it may be said that the prisms surround the lamps through a solid angle of more which the stood manner.

than 180. The upper portion of the globe is provided with a flange 2 which rests on a ring 3. This ring is provided with three or more hooks as at 1, which serve as a means of engagement for supporting chains as 5 and 6 whereby the lamp is suspended from any suitable point. I The mercury lamp which I locate in the globe, may, of course, be of any one of a variety of types. One form .-however, which is found effective is shown in Fig. 2. It consists of an exhausted tube '7 inclosing suitable electrodes such as the graphite anode 8 and the mercury cathode 9. A carbon filament 10 extends from the anode and, when the lamp is not running, engages at its lower end a floating armature 11. This armature is hollow at its top and carries mercury into which the lower end of the filament dips.

The lamp tube 7 is surmounted by a bulb or enlargement 12 constituting a condensing chamber. .This bulb aii'ords a means for supporting the weight of the lamp, and to this end rests upon the sides of a circular opening in a plate 13 of insulating material. This plate in turn is carried by two uprights 14 and 15 secured toa frame work shown perhaps best in Fig. 3. In this figure it will be seen that he annulus 16 is carried by radial arms 17, 18 and 19 secured to the ring 3. The uprights 14 and 15 a1" fastened to inwardly projecting arms 20 and 21 securedto the annulus 16. The mercury lamp is supported vertically as shown and extends down sufliciently so that the contracted portion 22-0f the lamp tube projects below the end of the globe 1. I

upon the float to submerge the same." The initial are produced at the lower end of the filament 10, upon the recession of the float, operates to start the lamp ina well-under- The solenoid 23, with its protecting casing 24., is centered in a circular opening in the lower end of the globe 1 and is supported by rods '25 and 26 depending from the arms 20 and 21.

- A number of ordinary incandescent lamps, in this case of the co-called bung-hole type, for example, indicated at 27, 28 and 29, are grouped about the mercury lamp. These are supported from sockets 30, 31 and 32 carried by the annulus 16. Suitable electrical connections are made whereby the lamps operate in multiple with each other and so that the total current traversing the lamps flows also through the mercury lamp. The incandescent (lamps therefore serve as the steadyingpresistance for the mercury lamp words should not be connected to an active portion of the circuit. To this end the arms 17, 18 and 19 should be insulated from the annulus 16, as for example bymeans of in.- sulating bushings 33 and 34:. A similar bushing not shown is provided for the" arm 17." h

When v the apparatus is in operation the light given offfrom the incandescent lamps and the lightproduced by the mercury lamp, in passing'through the holophane globe 1, are combined and intermingled in a manner to render their joint product far superior in illuminating effect to that which would exist without the use of a globeofthis character. In observing the globe when thus lighted up,

the individual lamps, either mercury lamps or the incandescent lamps, are not distinguishable. On the contrary, the globe appears to be filledwith a glowing light of a color neither that of the incandescent lamps nor of the mercury lamps but of a combination" of theftwo'which closely approaches day-light.

I may if desired surmountfthe lamp by means of a companion holophane globe, or if desired have a double reflecting prism reflector as at 35 which reflector serves to "throw down the upwardly-extending radiations from the lamps. This reflector may be carried by inwardly-projectin thumbscrews' as 36, 3'7 and 38 passingt rough an ornamental protectin hood 39 surrounding lamp. This hood may be in two parts the upper. portion ofwhich is removable if desired.

It is evident that numerous other changes may be made in the embodiment of my invention without departing from the spirit thereof, for which reason 'I do not wish to be limited to theexact details shown and described.

1 What I claim as new and desire to secure by Letters Patent of the United States is:

1. The combination of a prismatic glass globe, a ring for supporting said globe; a mercury vapor lamp, and one or more incandescent lamps in the globe and supported from's aid ring.

2. The combinationof a globe having a flanged top, a supporting ring engaging said flange, and electric lamps of different types carried from said ring. 1

3- The combination of a light-dispersing globe, a centrally located 'meroury vapor lamp in said globe, incandescent lamps grouped about said mercury vapor lamp,

and having filaments extending parallel for the greater part of their length with said mercury vapor lamp;

4. The combination of a globe of prismatic glass, a mercury vapor lamp supported centrally in said globe, a plurality of incandescent lamps supported in said globe around said mercury lamp, a rin support for said globe, and a frame-wor carried from said ring and supporting said incandescent lamps.

In witness whereof I' have hereunto set my hand this 7th day of May, 1904.

CHARLES P. STEIN METZ.

Witnesses:

BENJAMIN B; HULL, HELEN ORFono.

the condensing cham er 12 of the mercury

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