US997460A - Incandescent-lamp guard. - Google Patents

Description

W. N. MATTHEWS.

IN GANDBSGENT LAMP GUARD.

APPLICATION FILED JAN. 11. 1909.

Patented July 11, 1911.

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Witnesses N TED STATES. PATENT ,OFFIGE.

WILLIAM N.- MATTHEWS, or ST. LOUIS, mam, assmnon 'ro w. N. MATTHEWS &

' 1330.; or S LOUIS, MISSOURI, A FIRM. a

. IncAnnEscEN'r-LAMP GUARD.

sp ecificationot Letters melt. P t nt d July 11, 1911,

Application filed January 11, 1909. Serial No.'471,750.

To all whom et'inay concern: i Be it known that I, WIL' Lu! 'rnnws, a citizen of the. United States, residing at St. Louis, Missouri, have invented acert-ain'new and useful Improvement in Incandescent-Lamp Guards, of which the following is-a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the;

cation, in which- Figure l is a verticalsectiona-lview through iiiyimprovedlampiguard showing the same .in position on an incandescent lamp socket; Fig.2 .is a detailed view of the guard dctached. Figs. 3, 4 and 5 are detailed views of modified forms'of bottom guard wires. Fig. 6 is-an enlarged vertical section through the ehd of the'clamping band and showing a modified form of the threaded opening therein. 1 This invention relates to a new and use-' ful improvement in guards for incandescent lamps, the object being to construct a guard which will be simpleand' cheap, and one which. will prevent the removal of both the guard and the incandescent lamp from the socket except by the use of appropriatetools. In the drawings, 1 indicates an incandescent lampsocket, which may be of any ordinary or'approvcd construction, and 2'is the incandescent lamp mounted in said socket; 3 is the clamping band of my lamp guard, which band is provided with vertical band. The innermost walls of the clamping 3 is the intermediate spacing ring fittingwithin jogs or bends in the vertical guard wires, which guard wires are spaced apart,

N. MA'T- and likewise the ring is held in position with relation. to said guard wires, by means of I metal clips iwhicli are clamped upon the. ring on each side of aguard wire. Th'e lower ends of the guard wire are bent around a bottom ring 5, which bottom ring is prefcrably provided with jogs or bends at intervals to properly space theguard'wires.

In order to cushion the incandescent lamp within the guard, I arrangecushion wires 6 within the'guard, said cushion wires consistingpreferably ofsingle strands of wire bent into serpentine or zigzag form,- the bent portions lying substantially in a vertical plane so" that they will engage the incandescent lamp and afiord an extended bearing therefor. as shown in Fig. 1. The ends of these cushioning w res may be twist- .ed together and bent around thesp'a'cing ring 3, or other means may be employed to support the cushioning ring within the guard, if desired.

The guard above described is preferably dipped in solder or galvanizing material,

which solders the various wires and parts together. Of course, the threaded opening for the clamping screw is tapped and the clamping screw is introduced after the dipping operation.

To prevent the removallof the lamp except bya. person provided with proper tools either to remove the guard, or to cut the guard wires, I provide. bottom guard wires as shown In Figs. 2'to 5 inclusive. In Fig.

2 this bottom guard wire consists of three wires formed w.1th intermediate loops 8, to

-which the ends of adjacent wires are con nected, the extremities of said wires being bent around the bottom guard ring. In Fig. 3 the ends of the bottom guard wires 9 are twisted together and bent over the guard ring. In. Fig. 4 the bottom guard wire is in one piece twisted along part of its length, the ends being spread apart to engage the bottom guard ring. In Fig. 5 there are three bottom guard wires which are connected together at one end and have their outer ends bent around the bottom guard ring.

The projecting ends of the clamping hand are preferably cut-away as at 3, Figs. 1 and 2, so as to permit. the introduction of a reflector or shade S on the guard. The openings in standard-sized shades are such that they cannot ordinarily be introduced wires 12 may be twisted around the guard lamp seated in said socket, there being an 'I'am aware that changes in the construeupon the guard but by cutting away the lower part of the projecting ends of the clamping band, as shown at 3*, the shade may be introduced upon the guard. When the shade is introduced upon the guard,

wires to hold the shade in osition.

tion and arrangement of the several parts of my device may be made without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim is:

.1. An incandescent lamp guard, comprising a wire cage adapted to inclose the lamp and a cushioning member within the cage, which cushioning member comprises a series of wires which wires are bent into zigzag form, the bent portions occupying a vertical plane so as to afi'ord an extended bearing for engaging the surface of the lamp bulb and having lateral extensions attached to a part of the cage.

2. In a device of the class described, a wire cage adapted to be clamped upon an incandescent lamp socket for inclosing the opening in the lower end of the cage for the insertion and removal of the lamp, a bottom guard comprising a center body portion having extensions projecting in different -lateral directions therefrom, and hooks on said extensions which engage the" bottom of the cage.

3. In an incandescent lamp guard, a wire cage for inclosing the lamp bulb, a spacing ring at the lower end of said cage, and a bottom guard for the lower end of the cage, which guard comprises a series of wires interlooped to form a center portion having extensions projecting laterally therefrom and hooks on said extensions which hooks engagethe spacing ring on the bottom of the cage.

4. In an incandescent lamp guard, a wire cage for inclosing the lamp bulb, a spacing ring at the lower end of said cage, and a bottom guard for the lower end of the cage, which guard comprises two or more wires interlooped to form a center portion, and laterally projecting hooks to engage the spacing ring on the bottom of the cage.

5. In an incandescent lamp guard, comprising a wire cage adapted to inclose the lamp, and a cushioning member within the cage which cushioning member comprises a series of wires bent into zigzag form, the bent portions occupying a vertical plane so as to afford an extended bearing for engaging thesurface of the lamp bulb, and having lateral extensions formed by twisting two of the'wires around each other to be at tached to a part of the cage.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses, this 8th day of January 1909.

WILLIAM N. MATTHElVS.

'Vitnesses F. R. CORNWALL, LENonE CLARK.

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