US47681A - Improvement in lamps - Google Patents

Description

LANG L GILMAN.

y Latnp.

Patented MalyA 9, 1865 Imvm'a 7" w/ 2M Wz'netsse s N. PETERS. Fhowlimogmphlr, Washington, D C.

' t 't llNiTnn STaTns PATENT @retort EDWARD M. LANG, 0F WESTBBOOK, AND ISAIAHGILMAN, 0F PORTLAND, ME., ASSIGNQRS TO THEMSELVES, JOS. L. VINSLOW, AND E. HERSEY.

IMPROVEMENT IN LAM PS.

Specification forming part of Letters Patent No. 47,681, dated May 9, 1865.

T0 all whom it may concern:

Be it known that we, EDWARD M. LANG, of the town of Westbrook, and ISAIAH GILMAN, of the city of Portland, in the county of Gumberland, State of Maine, have invented a new and Improved Burner; andwe do hereby declare the following to be a full and exact description of the construction of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure lis a vertical section transversely to the wick-tube, and Fig. 2is a vertical section in the' direction of the width of the tube. Fig. 3 is a plan of the burner.

Similar letters referring to like parts in all the drawings, we will say that our invention consists in a combination as well as i`n a peculiar arrangement of a wick-tube, two cones or air-deectors, a metallic annular conduit, and certain heat-conductors and conesupporters, as hereinafter specified; and our invention further consists in the combination and arrangement of a removable truncated hollow cone or jacket, (made as hereinafter explained,) with the two cones-or air-deflectors, the annular conduit or ring, and the wick-tube, when arranged and connected together essentially in manner as hereinafter set forth.

From the above it will be seen that our invention involves the employment of the metal conductors D D, for the purpose of conveying the heat from the wick-tube E to the outer cone, A A, either directly or through the medium of any support to said cone, which medium or support as shownin the drawings is the metal ring G C, thereby causing a more rapid supply of heated air to that. part of the flame passing between the two cones, A A B B-the enlarged mouth and sloping sides of the outer cone being of the proportions and form (we believe) as bestto direct and keep up the necessary supply of heated air to the flame. The innercone, B B, may be attachedV directly to the outer cone, A A, or to the metal ring C G, by pieces of metal D D,or by any `other method that will hold the two cones relatively as arranged and allowas little transmission of heat from the inner cone to the outer cone aspossible.

We attach much importance to the proportions of distances relatively between thetwo cones and of the inner cone to the top of wick-tube, in connection with the relative tive of important advantages in spreading the flame of the wick and directing the air thereon in order to prevent it from smoking.

The metal conductors serve a twofold purpose, inasmuch as they rob the wick-tube of Y the heat that otherwise would go to the collar of the lamp, where it would be injurious, and convey it to the outer cone, A A, where it will do good. We do not limit ourselves to the number or size of theconductors D D.

We also employ in connection with the outer cone, A A, and other parts, as hereinafter decribed, a jacket, F F, in the form of the frustrum of a cone, or any other form not too contracted, and it may be constructed of any material,the object of said j acket bein gfor the better controlment of the llame when the lamp is in motion, the operation of the burner being just as perfect without it when at rest. The jacket is removable at will, not being fastened to cone. The aperture to the jacket being small enough not to slipenti rely over the outer cone, the weight of the jacket keeps it properly secured to the burner without the use of a special contrivance.

We make no claim to the employment of two cones or air-deflectors with a wick-tube. Neither do we claim simply makingV the orifice or mouth of the inner cone of less width than that of the outer cone.

What we claim as our invention or improvements is as follows 1. rltheabove-described combination, as well as the arrangement of the wick-tube E, the two cones, AB, the metallic annular conduit C, the conductors D D, land the supports D D, or the equivalent of the latter.

2. The combination of the removable jacket lcone at its middle or its expansion in opposite F with the two cones, A B, the ring` O, and tions therefrom, in mnner substantially as theWick-tube, arranged and connected subrepresented and hereinbefore described.

sta-ntially as specified.

3. The contraction of the mouth of the inner G' directions therefrom, in combination with the lVitnesses: expansion of the month of the outer cone at DANL. WINSLOW, its middle or its diminution in opposite direc- J oI-IN B. LITTLEFIELD.

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