US558727A

US558727A - Electric stand-lamp

Info

Publication number: US558727A
Authority: US
Publication date: 1896-04-21
Anticipated expiration: 1913-04-21

Description

2 Sheets- Sheet 1.

V(No Model.)

R. GRAVES. ELECTRIC STAND LAMP.

Patented Apr. 2,1, 1896-.

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R. GRAVES. ELECTRIC STAND LAMP.

No. 558,727. Patented Apr. 21,1896.

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ROBERT GRAVES, OF IRVINGTON, NEWT YORK.

ELECTRIC STAND-LAM P.

SPECIFICATION forming part of Letters Patent No. 558,727, dated April 21, 1896.

Application filed February 25, 1896. Serial No. 580,718. (No model.)

T0 all whom it may concern:

Beit known that I, ROBERT GRAVES, a citizen of the United States, and a resident of Irvington, in the county of Testchester and State of New York, have invented certain new and useful Improvements in Electric Stand-l This invention relates to electric stand-V lamps; and the object thereof is to provide a light of this class which is adapted for use on a stand, table, or similar support, and which is particularly applicable for use on diningtables,where Candelabra and similar lights are now employed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which* Figure l is a central vertical section of my improved electric stand lamp or light, showing also a section of a portion of a table provided with a table-cloth; Fig. 2, a bottom plan view of an insulating-strip which I employ and which is placed upon the table and which is adapted to be covered by a tablecloth, and by means of which electrical connection is made with the lamp. Fig. 3 is a detail view showingthe connecting-strips; Fig. 4, an edge vieuT thereof, and Figs. 5 and 6 are sectional views of details of the construction. l

In the practice of my invention I provide an ordinary standard or support A, which may be of any desired form, but which is preferably of the form shown in Fig. l, and which resembles in perspective view or side elevation a candlestick or support, and in the upper end of which is a tubular socket d, in which is placed a tubular sleeve a2, having an outwardly-directed and downwardlycurved flange d3, andplaced within the sleeve CL2 is a tubular casing 3, which is preferably made of porcelain or similar material and which is designed t0 resemble or represent a candle, and mounted on the tubular casing B is a shade-holder, which consists of a springsupported clamp D, composed of two separate similar jaws d, which are-pivotally connected at d2 by a pivot-pin on which is mounted a spring d3, and each of the segmental jaws d is provided with a projecting arm di, and in practice I preferably provide the pivot-pin by which the jaws d are connected with an upwardly-directed extension E, to which is secured by means of a sliding clamp F a rod G, which is adapted to support a shade g. This feature of the construction is best shown in Figs. l and 6, and I also secure to the bottom of the standard or supportA an insulating-plate H, which is provided with two binding-posts 71 with each of which is connected an electric conductor or wire h2, which extends upwardly through the standard or support a and through a tube h3, which is mounted inthe tubular casing B, and which extend outwardly through the sides of the tube h3 at h4 and which are connected with binding screws or posts h5.

I also employ an ordinary incandescent electric-light bulb K, which is adapted to be mounted on or inserted into the upper end of the tube h3 in the usual manner, and when thus inserted into said tube h3 electrical connection is made between the wires or conductors h2 and the filament wit-hin said incandescent-light blub.

The means which l employ for making connection with the wires or conductors 71,2 consists of a plate L, which is composed of rubber or similar material, and to the lower side of which is secured thin metal strips M, which are shown in Fig. 3, and one of which is shown in full lines in Fig. 4, and connected with the outer ends of these strips are wires or conductors m, which are adapted to be passed beneath the table and to be connected with any desired source of electrical supply, and beneath the strips M and covering the same is a thin sheet of insulating material N, and the inner ends of the metal strips M are provided with sharp spikes O, which are adapted to be inserted into the binding-posts h, and by means of which electrical connection is made with the wires or conductors h2.

In Fig. l I have shown a section of a tabletop P, and It represents a portion of a tablespread or cloth, and in practice the plate L, with its attachments, is placed beneath the cloth and the spikes or prongs O project therethrough, and all that is necessary when it is desired to use my improved light or lamp IOO to place the standard or support A thereon in such manner that the spikes or prongs O will pass into the binding-post 72..

The operation will be readily understood from the foregoing description when taken in connection with the accompanying drawings.

My invention is not limited to the form of the incandescent-light bulb K or to the manner of connecting the same with the tube h3, and it is evident that changes in and modifications of the various features of construction herein described may be made without departing from the spirit of my invention or sacrificing its advantages, and I reserve the right to make all such alterations therein and modiiications thereof as fairly come within the scope of the invention.

I have also shown in Fig. lA a saucer-shaped disk or plate S, which is mounted on the sleeve a2, and is such as is usually employed in connection with candles or candelabra when used for the purposes herein specified, and this together with other features of the construction herein described is intended to represent a candle or Candelabra such as is usually employed on dining-room tables and for other purposes.

Having fully described my invention, I claim as new and desire to secure by Letters Patent- 1. In an electric light or candelabra, the combination of a standard or support, atubular casing mounted in the upper end thereof, a tube passing through said casing, an incandescent electric-light bulb mounted in said tube, conductors which are connected with binding-posts in the bottom of said standard or support, and which extend upwardly therethrough and which are connected with binding-posts at the upper end of said tube, and means for making electrical connection with said conductors, substantially as shown and described.

2. In an electric light or candelabra, the combination of a standard or support, a tubular casing mounted on the upper end thereof, a tube passing through said casing,h an incandescent electric-light bulb mounted in said tube, conductors which are connected with binding-posts in the bottom of said standard or support, and which extend upwardly therethrough and which are connected with binding-posts at the upper end of said tube, and means for making electrical connection with said conductors, consisting of a plate of insulatin g material provided with metal strips on the bottom thereof, which are covered by insulating material said strips being provided at their inner end with spikes or prongs which proj ect through said insulating-plate, and are adapted to enter the binding-posts in the bottom of the standard or support substantially as shown and described.

3. In an electric light or candelabra, the combination of a standard or support, a tubular casing mounted on the upper end thereof, a tube passing through said casing, an incandescent electric-light bulb mounted in said tube, conductors which are connected with binding-posts in t-he bottom of said standard or support, and which extend upwardly therethrough and which are connected with binding-posts at the upper end of said tube, and

means for making electrical connection with said conductors', consisting of a plate of insulating material provided with metal strips on the bottom thereof which are covered by insulating material, said strips being provided at their inner end with spikes or prongs which project through said insulating-plate, and are adapted to enter the binding-posts in the bottom of the standard or support, and the outer ends of said metal strips being provided with conductors, substantially as shown and described.

4. In an electric light or candelabra, the combination of a standard or support, a tubular casing mounted on the upper end thereof, a tube passing through said casing, an incandescent electric-light bulb mounted in said tube, conductors which are connected with binding-posts in the bottom of said standard or support, and which extend upwardly therethrough, and which are connected with binding-posts at the upper end-of said tube, and means for making electrical connection with said conductors,said tube being provided with a shade-holder and the incandescent-light bulb with a head or stem which is adapted to be inserted into the upper end of said tube whereby electrical connection is made with the conductors, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 21st day of February, 1806.

ROBERT GRAVES. lVitnesscs:

C. GERsT, G. G. MILLIM.

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