US811050A - Incandescent gas-lamp. - Google Patents

Description

No. 811,050. I PATBNTED JAN. 30, 1906.

L. 0. FULLER.. INCANDESGENT GAS LAMP.

APPLICATION FILED JUNE 3, 1905.

W/ Tnesses Inventor,

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` Speccaton of Letters Patent.

Patented Jan. 30, 1906.

Application filed June 3, 1905. Serial No. 263,518.

To all whom it may concern.-

'Be it known that I, LoUIs C. FULLER, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Incandescent Gas- Larnps, of which the following is a specification.

My invention relates to incandescent gaslamps; and the objects of my invention are to spread the flame to better advantage, to provide a better air-supply for the flame, to prevent the usual heating and corrosion of the chimney-holder, to provide means for holding the chimney firmly in the holder, to provide an improved mantle-support, and to provide an improved shade-holder.

In the accompanying drawings, Figure 1 is a centralv vertical section of my lamp, a portion of the shade-holder being not in section and. a portion of the chimney being broken out. Fig. 2 is a detached view of my antirattling device for the chimney. Fig. 3 is a top detached view of the heat-insulating bushing. Fig. /1 is a top detached view of the air-inlet screen. Fig. 5 is a transverse section of my improved Bunsen steun taken through the induction-ports. F ig. 6 is an elevation of the mantle-support. Fig. 7 is a plan view of the shade-holder, taken on a smaller scale than Fig. 1.

1 is the lamp-supporting nipple, upon which is screwed the usual check-chamber 2. Upon this chamber is screwed the Bunsen stem or tube 3. The' three inductionppenings 4 in this tube I make larger than is usual in order to admit a greater flow of air to the ascending gas. In an experimental way this enlarging of these ports has been tried by others, and the result was a failure, for the reason that when lighting the lamp it llighted down-that is, the gas ignited through said ports, also the lamp when burning emit ted a roaring sound. I have provided means for obviating both the lightingidown and the roaring. This means consists in a cylindrical or tubular screen 5, made of suitable foraminated material slipped over thestem 6 of the regulator 7. This stem 6 has the usual slots which register with those of the Bunsen stem 3. As shown, the screen 5 is made of perforated sheet metal; but it may be formed of wire-cloth. With this screen the induction-openings may be considerably larger than would be possible without it, and the lamp will not roar nor light down.

Upon the Bunsen stem 3 is mounted my improved burner-support and chimney-sup'- port, comprising a tube or sleeve 8, snuglyfitting stem 3, a spider 9, rigidly secured to sleeve 8, and vertical fingers 10, .integral with said spider. To one of said fingers my improved antirattling device for the chimney may be attached. It is well known that chimneys of the same nominal size vary in size. Hence the fingers 10 must be far enough apart to receive the largest. My device consists of a spring 12, (shown detached in Fig. 2,) made integral with a sleeve 13. This sleeve is adapted to be tightly fitted on the upper end of one of the fingers 10, as shown in Fig. 1. It always bears against the chimney. Hence the latter is firmly held and cannot rattle.

It will be observed that the tip 14 is not mounted directly upon the tube 8, but is mounted on a bushing 15, which fits around said tube and extends thcreabove. This bushing is made of hard compressed. asbestos or some other suitable heat-insulating material. Its function is to prevent the usual heating and resulting corrosion of the chimney-holder just described.. Thus no matter how long the light has been burning the chimney-holder may be handled with the bare fingers, and though it may be warm it will not be so hot as to prevent handling the same.

Mounted on the upper end of the asbestos bushing 15 is a brass thimble 16, and fitted upon said. thimble is the tip-holder 17. The tip itself, 14, is of novel form in that it is eX- tended in the form of a cap above the top of the holder 17. Preferably about one-fourth of an inch istheheight of the tip above its holder. By this construction a larger surface of the wire-cloth is exposed to the air, while the diameter of the tip is not thereby increased. I employ a spreader disk or washer 18, attached by a rivet, as shown but this, I am aware, is not new. This form of tip, as shown, enlarges the iiame of the lamp to better advantage than any other tip of which I am aware.

I have further provided an improved mantie-support. This is shown in Figs. l and 6, from which its construction will readily be understood. It is formed of a single piece of wire. It comprises a looped hook 20, adapted to engage the upper edge of the chimney, a depending inner leg 21, and a stem 22, having a mantle-supporting hook 23. The end IOO lIO

of the leg 21 rests in contact with the inner side of the chimney. The advantages of this mantle-support are it has no unsightly stem running up alongside the chimney, it is small, neat, and cheap, is easily attached to and detached from a chimney, and it holds the mantle within the chimney when the latter is removed, Whereas the old style mantle-support had to be detached before the chimney could be removed. improved shade-holder. This is shown in Figs. l and 7, the latter being a plan view on a smaller scale. This holder comprises a ring 24 and three arms 25, secured thereto. From the ring these arms extend upwardly and terminate in hooks 26, which are hung on the top of the chimney. From the ring the arms also extend downwardly, then outwardly, as shown, so that each arm engages the shade 27 at two points, as shown. Each arm is strongly secured to the ring by two rivets 28, so that the arms cannot turn, as would be possible if but one rivet were used. To receive the rivets, each arm 25 is formed with two lugs 29. (Shown in Fig. 7.)

Having described my invention, what I I have further provided any claim as new, and desire to secure by Letters Patent, is-

l. ln an incandescent gas-lamp having a Bunsen tube, an outer tube sleeved thereon and a chimney-holder secured to said outer tube, the combination of a heat-insulating bushing mounted upon said outer tube, and a tip-holder mounted upon said bushing; whereby the heat communicated by the flame to the tip-holder will be insulated from the chimney-holder.

2. In a mantle gas-lamp, a mantle-holder i formed of a single piece of wire and comprising a looped hook adapted to engage the upper edge of a chimney, a downwardly-extending leg adapted to bear against the inner side of a chimney, and a depending hook adapted to support a mantle; substantially as described. i

In testimony whereor` I aflix my signature in the presence of two witnesses.

LOUIS C. FULLER.

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