US40226A - Improvement in lamps - Google Patents

Description

L. 1.; .ATWOOD.

'Lamp.

No. 40,226. Patented Oct. 13. 1863.

/ X 5 jmmm,

N, PETERS. numb-ha mer Washington, 01:.

UNITED STATES PATENT OFFICE.

LEWVIS J. ATWOOD, OF WATERBURY, CONNECTICUT.

IMPROVEMENT IN LAMPS.

Specification tbrniing part of Letters Patent No. 40,226, dated October 13, 1863.

To all whom it may concern:

Be it known that I, LEWIS J. A'rwoon, of Waterbury, in the county of New Haven and State ofConnecticut, haveinvented, made, and applied to use a certain new and useful Improvement in Lamps 5 and I do hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the annexed drawings, makings part of this specification, wherein Figure l is a vertical section of my lampburner, and Fig. 2 is a plan of the burner with the chimney turned back.

Similar marks of reference denote the same parts.

Lamps have heretofore been constructed with a diaphragm in the chimney, and burners have also been made with a deflector over the wick to direct the air to the flame, so that the lamp would not require a chimney.

The nature of my said invention consists in a slide supporter for a draft-plate rising above the wick-tube, in combination with a glass chimney having a contracted neck, so that the said draft-plate may be adjusted to the exact point required for producing the best light, reference being bad to the character of oil being used, the exact shape of the chimney, and the amount of draft required. Thus any slight variation in the shape of the chimneycan be allowed for by raising or lowering the draftplate, and as this does notobstruct the light, but allows it to shine through the chimney both above and below the draft-plate, thereis no loss of light by a slight change in the position ot'said draftplate.

In the drawings, (t represents the screw of the burner, taking the neck of any ordinary reservoir. 0 is the wick-tube, c is the ratchetcap, and d is the wick raiser, all as usual. A perforated flange, e, surrounds the burner to. and forms an airdistributer: fis a ring, hinged at g and provided with the spring h, to take and retain the flan ge l of the chimney 7c.

2 represents the narrow part or neck of the chimney, and the shape of this chimney may be varied as desired; but I prefer that shown. At the narrow part 2 of the chimney I introduce the draft-plate i, of metal or other material, in the center of which is an opening of the size and shape required for the flame. This draft-plate is to be supported by arms 3 3 from the wick-tube I). The operation of this burner is that the draftplate 13 and lower part of the chimney direct the draft (passing through the distributer 6) upon the flame, and produce aperfect combustion. At the same time the light is not in the least obstructed, and the cones and deflectors heretofore employed are dispensed with.

In cases where a second or auxiliary draft is required in the chimney, an annular space may be left around the draft-plate i, between that and the glass chimney, or the edge of said draft-plate may be notched as represented. In either case the required amount of air can be admitted to the chimney above this draftplate by the said opening or openings, to perfeet combustion in the upper portions of the flame, which draft is regulated according to the position of said draft-plate, as aforesaid.

I do not claim a chimney titted so as to serve the purpose of a deflector, and at the same time transmit light both above and below the flame; neither do I claim a diaphragm or draft-plate in the chimney, as these are old but VVha-t I claim, and desire to secure by Letters Patent, is-

The supporter and slide grasping the wicktube and sustaining the draft-plate, in combination with a glass chimney having a contracted neck, so that the adjustment of the draft-plate can be effected in the manner represented, and for the purposes set forth.

In witness whereof I have hereunto set m y signature this 6th day of January, 1863.

L. J. ATWCOD.

Witnesses JOSEPH A. BUNNELL, E. D. Graces.

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