US1270843A - Electric lamp. - Google Patents

Description

F. G. KEYES.

ELECTRIC LAMPv APPLICATION FlLEDJUNE26.1914-.

1 270,843. Patented July 2, 191B.

INVENTUI? er U 4444 ATTORNEY UNITED STATES PATENT UFFICE.

FREDERICK G. REYES, OF EAST ORANGE, NEW JERSEY. ASSIGNOR TO COOPER HEWITT ELECTRIC COMPANY, OF HOBOKEN, NEW JERSEY, A CORPORATION OF NEW JERSEY.

ELECTRIC LAMP.

Spcciflca tion of Letters Patent.

Patented July 2, 1918.

To o whom it may concern:

Be it known that I FREDERHK G. Knrns, a citizen of the United States, and residenlg of East Orange, county of Essex, State 0 New Jersey, have invented certain new and useful Improvements in Electric Lamps, 01 Which the following is a specification.

An in'iportant feature of the heavy tungsten filament lamp made known by me, for example, in my application No. 811,002, lji led January 8th, 1914, is that of :uloquately sup porting the filament and at the same time furnishing a convenient means for making connections inside the lamp. The (llsl; which I have employed is generally of aluminum and the anchor rods for the tungsten Wire are supported by but insulated from this disk.

These and other details of my invention are clearly shown in the accompanying i'lrawings in which Figure 1 is a vertical sec tion of one of my electrodes, a portion of which is shown in full lines; Figv I2 is a detail. of a connection to the filament terminals; Fig. 3 is a side view of the aluminum disk and Fig. 4 is a plan of the suspended filament.

l i here filaments of the nature herein do scribed are used, it is better not to attempt to maintain the filaments in more straight lines or regular curves. It is lilrefcrahlo to allow a certain amount of sagging, and support the filaments in such a "WHY as to provide for such a sagging, at the samo time guarding against the touching and conse' quent short oircuiting of adjacent parts of the filament.

In the present instance the filament shown at 1 falls into what I may call 2 basket shape or bowl shape. The filament is contained Within a globe, 2, and is wound spirally from end to end but allowed to sag as already described. At its ends the lilamcnt is attached to lead wires, 3, 3, say of iron tipped with tungstein and the conuection is made with each terminal by making the lower end, 4- of the lead bulb-shaped and winding around it a portion of the eX- posed end of the tungsten spiral and then applying an oxy-acetylone flame adding, it necessary, a small amount of iron as shown at 5. Since iron welds to tungsten very read ily a secure electrical connection is made.

The globe 2 is provided with a reduced tubular extension, 6. Near Where the extenion begins a disk, 7, of aluminum is placed being itself supported intermodiatoly from a rci ntrant portion, 8, of the chamber forlnei'l by the outer end of the extension. To such reintrant portion is attached an arbor, 9, of the same material as the wall of the container or its eXl'mlslon and usually integral theriiewith. T he arbor is provided with an upset portion. U), While the disk has a sleeve 11, with a split expanded por tion, 12, the latter being adapted to (over and cngag: the upset portion of the arbor. The dish with its sleeve may lie passed over the arbor and the engagement of the ex panded portion of the sleeve with the upset portion of the arbor having taken place the hole may be firmly fitod in position by means of a wire, 13, securely twisted around the fingers of the split expanded portion.

the end of the ill'lJOh has attached to it in any suitable inauuer anchor wires, 14, H, which extend into such a position below the tungsten filament 1 that loops made in [he ends of the wires may engage and hold up dill'erent portions of the tungsten filament without requiring that the filament should he maintained rigidly in a straight or continuously curved line. The anchor Wires may be mainly nickel steel rods proiiilod with tip portions, 15x 15, of tong slrn or other refractory metal. in ,the form of wire Besides the rods 14, 14, which, having been se ured to the end of the arbor 9 are naturally insi'ulated from ear-h other, there are anchor Wires, 16, .16, which have the same general construction as the anchor Wires 14, 1%, which extend upward through insulating blocks 17, 17, in the disk 7. In a similar way the lead rods, or Wires, 3, 3, are insulated from each other and from the disk 7 by means of insulating sleeves in the disk 7. Above the disk 7 the leads 3, 3 are secured, by silv'er soldering or by any approved mcthml'which insures electrical connection, to leadingdn conductors, 18, 18, passing through and forming a part of the 19, 19, of the lamp. The details of those seals form no part of the present invention and need not be further described. The sleeves may be connected to the external circuit by means of wires, 20, 20 and soldered to the ends of the sleeves.

I claim as my invention:

1. In a tungsten filament limp, a contrainer, :1 heavy filament therein, an extensupporting means a. nonconducting depending arbor centre 1y disposed within the extenslon, anchor wires for conneotion with different parts of the filament and an insulated metal disk and sleeve surrounding the said arbor.

2. In a. tungsten filament lamp, a conta-iner, a. heavy filament therein, an exten sion of the container and supporting means for the said filament compnsm a noncondueting depending arbor centre y disposed within the extension, anchor Wires for corn nection with diflt'erent parts of the filament and an insulated metal disk and sleeve surrounding the said arbor, the terminals of the filament being connected to the lam seals b insulated rods extending throng the disli:

3. In a tungsten filament lamp, :1 con teiner, a, heavy filament thereim an extension oi the oontainer and supporting means for the said filament comprising a nonconducn 111g depending arbor centrally disposed Within the extension, the said erbor having y n upset portion, and an insulated supporting metal disk carrying a sleeve adapted to engage said upset portion.

4. Supporting means for heavy tungsten filaments comprisinga non-conducting arbor 3 having an upset portion, an insulated supporting disk carrying a sleeve adapted to engage the said upset portion and means for binding the 11 per end of the sleeve to the arbor above t e upset portion. 3

Signed at New York, in the count of New York and State of New York this 25 day of June, A. D. 1914. v

FREDERICK G. KEYES.

Witnesses:

Tues. H. BROWN, H. B. WOODWABD.

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