US1087280A - Draft-deflector for lamp-burners. - Google Patents

Description

Patented Feb. 17, 1914.

A. M. GOONS.

DRAFT DEFLEGTOR FOR LAMP BURNERS. APPLICATION FILED AUG. 20, 1913. 1,087,280.

[N VEN T OR H\ m A.

WITNESSE UNITED STATES PATENT OFFICE.

ARTHUR M. COONS, OF WATERBURY, CONNECTICUT, ASSIGNOR TO SCOVILL MANUFAC- TUBING COMPANY, OF WATERBURY, CONNECTICUT, A CORPORATION OF GON- NECTIC'UT.

DRAFT-DEFLECTOR FOR LAMP-BURNERS.

Specification of Letters Patent.

Patented Feb. 17 1914:.

To all whom it may cone-em Be it known that I, ARTHUR M. Coons, a citizen of the United States, residing at Waterbury, in the county of New Haven and State of Connecticut, have invented a certain new and useful Improvement in Draft- Deflectors for Lamp-Burners, of which the following is a full, clear, and exact description.

This invention relates to that class of flatwick lamp burners in which a deflector is placed within the cone or dome and surrounds the wick tube in such a way as to modify the air supply to the flame. These deflectors are made of metal, in various forms, and supported on the cone, or on the perforated air plate, or on the wick tube.

The object of this invention is to provide a very simple and economical draft or air deflector, in and by which the air is most efficiently distributed to the flame, so as to insure improved or increased illuminating results, due to steadying the draft, and the avoiding of smoking under ordinary burning conditions and especially when the wick is turned down so as to get a low flame.

Ihe invention consists, in its preferred form, of a seamless sheet steel deflector, in the form of a hollow, truncated pyramid, provided with air ducts at its ends and having at its base laterally extended lugs adapted to engage the burner cone to support the deflector within the cone without materially interfering with the upward flow of air to the flame.

In the accompanying drawings illustrating the invention, in the several figures of which like parts are similarly designated, Figure 1 is a perspective view of the deflector detached, and Fig. 2 is a top plan view thereof. Fig. 3 is a horizontal section of a burner containing the deflector, the plane of section being on a level with the top of the deflector. Fig. 4 is an inverted plan view of the burner cone with the deflector. in place. Fig. 5 is a perspective view of a modified form of deflector. Fig. 6 is an inverted plan view of the cone in which the deflector-of Fig. 5 is mounted.

The deflector 1 is of the form of a hollow, truncated pyramid, preferably formed from a cupped steel blank, without seams, and with laterally extended lugs or feet 2, at the corners of its base, which lugs as shown in Figs. 3, 4 and 6, may engage with slots or notches 3 in the cone or dome i of the burner 5v to support the deflector about the wick tube 6 of such burner. The provision of the four supporting lugs or feet 2, in-' sures the rigid holding of the deflector in place, and these lugs are of such dimensions as not materially to interfere with the ascending air currents.

In order to render the draft steadier and prevent smoking, the ends of the deflector may be provided with the vertically disposed corrugations or grooves 7 arranged upon opposite sides of median portions 8 of the ends and open at both ends; but as shown in Fig. 5 the ends of the deflector may be made with the outwardly flared cor: rugations or lips 9 at their tops. In either construction the relation of the corrugations to the cone or dome is such that they form air ducts which insure the supply of air to the ends of the flame both inside and outside of the deflector, the dimensions of the deflector relatively to the wick tube are such as to provide a substantially large air space all around the wick tube and between the wick tube and the deflector.

By the construction described, the flame will be steadier in a draft, and the burner will not smoke so readily when under ordinary burning conditions, and especially will not smoke so readily when turned low. WVhen a burner is turned low, it is often found that the chimney will be badly coated. By the use of a deflector of the character described, these objections are largely or wholly overcome.

One of the greatest difficulties encountered in the use of kerosene deflector-burners is to produce a steady flame, that is to say, a flame that will not flicker or have a waving or curling motion, due, probably, to the air-currents being agitated in different directions. Sometimes the air current takes on a spiral form, due probably to the circular cross-section of the burner cone or dome. .Various devices have been used to overcome these diificulties, but in overcoming them care must be taken to avoid charring of the wick, deposition of carbon on the edges of the flame slot of the cone or dome, or on the edges of the deflector itself, which tend to produce a reddish-yellow flame of low candle-power, and variations in the dimensions and application of the deflector, which may cause any of these difliculties. By the present construction of deflectors, by stamping them from a single blank, without seam, a uniform structure is obtainable that practically avoids the enumerated difliculties and secures the desired result.

The vertically disposed corrugations or grooves provide air spaces at the ends of the flame slot outside of the deflector and cause the air currents to flow directly upward, thus tending to prevent and in any case serving to break up any circular 01' spiral currents that would be inclined to form inside of the cone or dome. These corrugations or grooves not only thus direct the outside air-currents, but they also guide the air-currents inside of the deflector, causing them to converge in their eXit from the burner to the chimney; and furthermore, they provide a direct supply of air at the ends of the flame slot in the cone or dome, thus causing full combustion there.

The burner herein shown, excepting for the details above specified, may be and is here shown of Well known construction, with the cone hinged to the body so as to be tiltable thereon; but the use of the invention is not limited to the burner illustrated.

What I claim is 1. A draft deflector for lamp burners, comprising a hollow, truncated pyramid of metal, having corrugations in its opposite ends forming air ducts to insure upward air currents both inside and outside of the deflector and provided at its bottom with laterally extending lugs of such dimensions and so disposed as not to materially impede the ascending air currents.

2. A draft deflector for lamp burners, comprising a hollow, truncated pyramid of metal, having vertically disposed grooves in its opposite ends, and laterally extending lugs, combined with a lamp burner having cone provided with notches to receive said lugs to support the deflector within said cone, the lugs being of such size and so disposed as not to unduly interfere with the ascending air currents.

In testimony whereof I have hereunto set my hand this 9th day of August A. D. 1913.

ARTHUR M. COONS. Witnesses:

ALFRED J. WOLFE, GEORGE A. Goss.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

Images