US934024A - Incandescent lamp. - Google Patents

Description

' E. H. SMITH. INGANDE$GENT LAMP. APPLICATION FILED NOV. so, 1908.

' Patented Sept. 14, 1909.

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.EDW'ARD H. SMXTH, Gk

., multiple filament PATENT .Annnnnnn, .wesirrnoron, sssrenoza or one-near To rrrories MITCHELL, or ABERDEEN, WASHING-TON.

ENCANDEEzCENIt LATER;

Specification of Letters Patent. Patented Sept. it, Tlilllll.

Application filed. Novemcer 30, 1%8. Serial l lo. 465,146.

To all whom it may concern."

Be it known that l, EDWARD ll. S ITH, citizen of the United States, residing at Aberdeen, in the county of Chehalis and State of Washington, have invented certain new and useful Improvements in Incandescent Lamps, 0? which the following is a specification, reference being had therein to the-ac companying drawing.

This invention relates to incandescent electric lamps, and has for" its object, the pro vision of means whereby the filaments of incandescent lamps which maybe thrown into'and out of circuit ,and

' thus be rendered luminous at will.

Another object of this invention is the production of contact means which is simple in construction,"and consists of a'comparativel small number of parts.

Still another object of this invent-ion is the production of means for opening or closing the circuit of an electric incandescent lamp which may be supported at such a height as to be not easily reached.

With these and other objects in View, this invention consists of certain novel constructions, combinations, and arrangements or parts as'will be hereinafter fully described and claimed,

In the drawings: Figure 1 is a side elc vation of ailamp having the present invention applied thereto. Fig. 2 is a side eleva tion of'an'incandesce'nt lamp, where three filaments are employed.- Fig. 3 is a-detail of the cap of the lamp showing I the contact I switch inrelation to the contact points. Fig.

4 is a detail perspective of the switch mem-' ber. Fig. 5 18 a section taken on line 5-5, of Fig. 4.

I Referring to the drawings, by numerals, 1 designates the lamp bulb, which contains two filaments 2 and 3, one of which is of greater candle power than the other. For instance, filament 2 may be of 16 candle power, and the filament 3 may be of one candle power. l

The bulb 1 is supported or secured to the cap 4 of the lamp and the cap 4 is provided at its lower end with a collar 5, in which collar 5 is formed a cut-outportionG. In this cut-out'portion 6 are positioned two contact points 7 and 8 respectively.

7 point 7 is secured or connected atone end to jected portion, thereof.

plied to a The contact point. Sis secured to the leading-in wire 18- of the l'ligh light or the light with greater candle power, for instance 16 candle power. The leading-in wires are separated by means of cotton or other insulating material which is positioned in the'bulb 11.

Pivotally secured to the collar?) is a switch 12, which switch is adapted to swing upon pivot and form a contact with the contact points 7 and 8 and thereby illuminate the diiterent filaments.

The switch lever 12 is formed of single piece or sheet of metal pressed or otherwise shaped to provide an enlarged flattened, and

laterall ro'ectin rounded heat-113. havin 15 formedadjacent to the pro- The body l l is centrally contracted and longitudinally depressed to provide an elongated substantially ll-shaped contact 16. The lower end an aperture 'of said. body is rolled to form a transverselyextending collar 18, the end of the material of which said collar is formedbeing forced between the side edges of the central depressed portion of the body la -thereby c'urely holding said end in its rolled sh ape.

Uponthe collar and upon each side of the cutout portion 6 is positioned an eye 18 through which is adapted to pass a cord 29 which carries-at each end, a ball 21 and 21, to facilitate the operating of the stringor cord. The cord 20 passes through the rolledportion, which-rolled-portion' constitutes a collar, and upon each side of therolled-portion a knot 22 is formed so as to hold the cord firmly in said collar and prevent the same from slipping through the collar.

in the device shown in Fig. 1, the switch member 12 is in contact with the low light or terminal 7 and thereby allows the current to flow through the low light and it will. be obvious that by pulling the ball 21 the switch-will be readily swung to the right and come in contact with the high light terminal 8. v

In Fig. 2, I have shown my device as apthree-filament lamp and the same principle the device irlustratod in l ig. 2 where three filaments are-used. In Fig. 2 I have shown the low light filament 3, for instance, with one candle power, the medium light filament 2 for instance sixteen candle power and a bright light 4*,and it will lac-obvious that by swinging the switch member 12, the same allycheapening the cost of manufacturing will contact with the low light terminal 7, and then with the medium light terminal 8, and finally with the high or bright light terminalQ, thus permitting the brilliancy of the light to be controlled as desired.

' In Fig. 3, I have shown a switch member 12 positioned to one side of all'of the terminals so as to consecutively light the differ ent lights, and the same will be in a vertical position when out of contact with any of the pointsor'terminals, Whereas in Figs. 1 and 2 the switch-member will be positioned between two of the terminals when in a vertical position. It will also be obvious that by. having the switch member 12 mounted off center-upon the collar 5, the same will'not be likely to swing too far in one direction. It will also be obvious that the same can be more easily swung by having said switch so mounted upon the collar 5.

It will be seen from the foregoing that theswitch lever is one that may be readily formed from a single piece or sheet of metal v by a single operation of a suit-able shaping mtgchine and owing to its shape there is 11 le or no waste of material, thus materithe same.

It will also be seen that by means of the 1 and then contracting the body of said lever, no sharp or frail edgesare formed such as would in a short time become damaged so as to render the device inoperative.

What I claim is:

A switch lever for multiple filament lamps composed of a single piece of sheet metal provided with a flattened offset head adapted for pivotal COIIIIQHIiOTl with a lamp, said lever being provided with a narrow elongated body, the central portion of which is depressed and contracted to form a contact surface, the free end of said body being rolled upon itself to form a string receiving eye.

In testimony whereof I hereunto affix my signature in presence of two witnesses.

W. L.'ECHOLS, JOHN OHARA.

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