US1036744A - Incandescent electric lamp. - Google Patents

Description

E, H. TATS nwfaa'maczzvr nimm@ LAMP.

1`,O36,`744 Patented Aug. 27, 1912.

2 SHEETS-SBEET 1,

@my z l @if Y S2* zum'. n. Tarn, or Los aucuns, camroama.

nrcammsonnr nnncrnic uur.

lpeelaeatioii et Letters Patent.

Patented Aug. 27, 191 2.

Application aled September 5, 1911. serial No. 647,887.

To all whom it may concern.' Be it known that I Emi. H. Tarn, a citizen of the United States, residing at Los Angeles, in the county of Los An eles and State of California, ave invente certain new and useful Improvements in Incandescent Electric Lamps and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap pertains to make and use the same. c

This invention relates to improvements in incandescent electric lamps.

One object of the invention is to provide a lamp of this character having arran ed therein means whereby the lam is coo ed and the bulb thus prevented rom being broken b the intense heat generated from hi h can le power lights.

nother o ect is to provide a lam of this character aving an im roved cons ruction and arrangement o filaments and means for supportin the same.

With these and o er objects in view, the invention consists lof certain novel features of construction, and the combination and arran ement of parts as will be more fully descri ed and claimed.

In the accompanying drawings: Figure 1 .is a side view of my im roved lam parte being broken awa and in section' ig. 2 is a vertical sections view thereof; ig. 8 is a top plan view' Fi .4isabottom plan view of the glass cap or c osing the inner end of the bulb and for forming a sup ort for the filament holding and heat 'disc arging element of the lamp; Fig. 5 is a horizontal sectional view on the line 5--5 of Fig. 2 Fig. 6 is a similar view on the line 6-6 of Fi 2.

Referring more particularly to ing 1 denotes the lass'bulb of the lamp said bulb being of e usual or an desire shape. To the inner end of the bul is fused or otherwise firmly secured a circular convex cap 2 formed of lass or other suitable insulating or non-'con ucting material. In the center of the'lowerfside of the ca is formed a depending or inwardly exten in frustoconica rshaped prozection 4.aroun which inthe yinner 'side ofj e drawforatonswthepu oseo which'wil "be icrenafte'r-more ful y describedipfj Arranged fonfthe cap 2 and "inner he cap -isformed an annular recess 5. I:Through the prol'ection:

the bulb is a hollow metal base or shell 7 which is preferably threaded as shown and otherwise corres onds to the usual hase of nn incandescent amp. The base or shell T has arranged in its outer end a disk 8 of insulating material to the outer side of which is secured a terminal or contact plate l). On the inner edge of the base or shell 7 is formed a skirt 10 which extends over the outer edge of the cap and the adjacent portion of the bulb as shown. The skirt is cemented or otherwise ri idly secured to the outer edge of the cap. hrough the cement and between the surface of the cap and adjacent portion of the skirt are formed two or more air assages 8 the upper and inner ends of whic communicate with the space in the hollow shell or base 7 and the einer ends of which communicate with slots 11 formed in the skirt or extension 10 of the base or shell. The assages 6 in the cap 2 also communicate with the space in the shell or base 7 as shown.

Within the bulb 1 is a combined filament supporting and heat discharging mechanism A.comprising a pendant narrow cone 12 formed of tin, glass or other suitable insulating or non-conducting material, said cone projecting into the bulb to the roper dis- ,tance an having formed on its arger open end an annular radially projecting attaching flange 18 which fits and is adapted to bc secured within the annular recess 5 in the inner side of the cap 2 b fusing or in any other suitable manner. Wiien the conc is thns lsecured to the cap the projection 4 on the inner side of the cap extends into and closely tits the open end of the conc as shown. Preferably, though not'necessarily arranged in the cone 12 is a cone shaped metallic ining 14 which extends to within a short. distance of the open end of the conc 12 as shown. The lining 14 has a bright reflecting surface and may be constructed of tin foi or thin sheet metal or may be sim ily in the form 0f a metallic coating appliedl to the inner side of the cone.

Arranged through and fused or welded in the sides of the cone 12 andv projecting through the lining 14 adjacent to the open end t ereof are diagonally arranged current conductin pins 15 which serve to hold the lining 14 in place and to the opposite ends Jof w ich vare connected the curient conducting Wires 16 and 17 of the lam i. The current conducting-wires 16 and 1i pass ont of the lam through the assages 6 in the cap Arranged on the upper portion of the cone 12 is an upper filament supporting disk 18 formed of g ass or other non-conducting material, said disk having formed therein a centrall disposed i passage to receive the cone. round the passage in the disk 18 is formed 1 an annular -laterally projecting flange 19 which closely fits the side of the cone 12 and forms an increased bearingsurface for the disk. In the outer portion of the disk are molded angularly bent substantiall V-shaped filament supporting wires 20 t e ends of which project beyond the outer edge of the disk and form han ers to which the ends of the filaments are so dered or otherwise firmly secured. One of the ends of the wires 20 is longer and projects a greater distance from the edge of the disk than its companion end so t at when the filaments are secured to said ends one strand of the filaments will be disposed nearer to the cone near its smaller end and spaced a suitable distance from the disk 18 is a second filament holding disk 21 which is constructed in a similar manner but is somewhat smaller than the disk 18. Embedded in the disk 21 is a series of radially projectin filament engagin wires 22 in the outer en s of which are ormed bends or hooks which en age the loops of the filaments and hold the atter in pro er position relative to the outer surfaces o the cone. The inner ends of the conducting wires 16 and 17 are connected to the ends of the wires 20 or adjacent ends of the filaments as shown. By providing a cone shaped filament su port constructed and arranged as herein s own and described to ther with the perforated hollow base or s ell 7 and the perforated cap 2 the heat from the incandescent filaments will be absorbed by the glass cone and its metal lining and the heat thus'absorbed will form a vortex in the cones and will thus be rapidly drawn out throu h the rforations 0 in the cap 2 and disc arged hrough the passages 8 and slots 11 in the skirt of the shell or base 7. By arranging one strand of each of the filaments closer to the surface of the cone than the other, the heat from these strands or fllaments'will be absorbed by the cone before itican reach the bulb, thus relieving the latter of .this much.

of the heat generated by the filaments.-

connection withv t e 'accompany' the constructiony andoperation'fo inventionwill be'readilyl lunderstood withoutr. l

quiring a morel extended e lanationa? and the minor details of construction may be resorted to without departing from the. principle or sacrificing any of the advanytags of the invention as claimed.

aving thus described my invention, what I claim is:

1. In an incandescent electric lamp, a bulb, av non-conducting ca cemented to the inner end of said bulb an( having a frusto- 'conical Broection at its center extending into the ul a pair of perforations through the cap and projection, and a groove around the latter on the inner face of the cap, a hollow metal base with whose interior said perforations communicate, the base haring a skirt secured to the cap and bulb and pierced with discharge slots also communieatin with the interior of the base, a hollow e ement having a flange secured in said recess so that its interior communicates with said perforations, a lining within this element, filament-carrying devices mounted on the element, ins through its wall, and wires leading rom said devices through said pins and perforations and to contact points carried by said base. the cone than the other strand. Secured to i 2. In an incandescent electric lamp, a bulb, a non-conductin cap secured to .the inner end of said bu b, said cap having* 1formed therein a series of perforations an( an annular recess, a narrow pendant cone formed of insulatin material arranged in said bulb, a flange. ormed on the open end ,of said cone and secured in the recess in said cap whereby the cone is held in o erative position in the bulb, a frusta-conica projection formed on the inner side of said cap and extending iiito saidcone, and a hollow metal base havin a skirt surrounding said cap and the adjacent end .of the bulb, said skirt being cemented to the edge of the cap and having formed therein heat discharging skirtand the cap havingformed therein passa es communicating with said slots in the skirt and the s ace in said hollow base.

lnotches. adaptedto en age the loops of the fllaments,`and means w ereby the heat within Baidcone is. discharged from the lamp.

4. In an incandescent electric lamp, a bulb, a hollow cone in said bulb, upper and ower-` non-conducting filament supporting y A disks on said'cone, filament su porting wires Various changes inthe ormpproportion c'arried by,r said disks, a per orated cap on slots, said cement connection between the` the inner end of the bulb and su portin said cone, and a hollow base secures to sai rap and having heat discharging openings whereby the heat from the cone is discharged to the exterior.

5. In an incandescent electric lamp, a bulb7 a hollow cone shaped filament supporting and heat absorbing cone arranged in said` bulb, upper and lower non-conductin(r tilaiiieiit supporting disks arranged on said cone, filament su port-ing wires arranged in said upper dis t, said wires having angularly projecting ends, one of which is of greater length than the other whereby some of the lilaiiieiit strands are closer to said rone than the others, filament engaging wires arranged in said lowex` filament supporting disk, said wires having their outer ends bent to forni notches adapted to engage the looped ends of the filament, a perforated cap arranged on the inner end of the bulb and adapted to support said cone, a hollow base or shell secured to said ca i and to the adjacent end of the bulb, said base or `shell having formed therein heat discharging openings whereby the heat froiii ihe cone is discharged from the lamp.

In testimony whereof I have hereunto set my hand in presence of tivo subscribing u'ii'- nesses.

EARL ll. 'l`.\l`l1. Witnesses:

SAM Timciiizii, L. O. Roiinirrsox.

Copies of this patent may be obtained for Iva centi each, by addressing the Commissioner of Patents, Washington, D. 0.

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