US387756A - Lewis j - Google Patents

Description

(No Model.)

L. J. ATWOOD.

ARGAND LAMP.

No. 887,758. Patented Aug. 14, 1888.

iUNiTen STATES PATENT @Triest LEVIS J. ATWOOD, OF VATERBURY, CONNECTICUT, ASSIGNOB TO THE PLUME t H ATWOOD hl ANUFACTURNG COMPANY, OF SAME PLACE.

ARGAND LAM P.

SPECIFICATION forming part of Letters Patent No. 387,756, dated August 14. 1883- Appliention filed Jununry. i888.

To all whom il; may concern:

Be it known that I, LEWIS J. ATWOOD, of Vaterbury, in the county of New Haven and State of Connecticut, have invented an Improvenientin Argand Lamps, of which thoi'oll lowing is a specification.

Argand lamps have heretofore been construeted in which a cylindrical wick is received between a central airAtube and au exterior tube or case, usually known as the wicktnbe,7 and a button or detiector has been provided at the upper end ot' the air-tube and within the llame. In lamps of this character ditiienlty often arises from the kerosene or other oil percoiating down the air-tube into the drip cup at the bottom thereof. This arises most frequently when a carbonaceous crust is formed upon the upper end of the airtube, and when pieces of carbon adhere to the interior ot' such air-tube, near the top end thereof, and'aet to draw over the oil from the wick by capillary attraction.

My present invention is intended to prevent this difticulty; and it consists in a supplemental air-tube that catches and returns into the lainprcservoir any oil that might otherwise run down into the drip-cup or the base of the lamp.

In the drawings, Figure l is a vertical seetion representingaportion of an Argand lamp, and showing the wick-tube, air-tube. supple mental aintube, and deflector; and Fig. 2 isa sectional plan view at the line a;

The rescrvoi r A of the lamp is of any desired shape or size, and the air-tube B passes vertically through the reservoir, and it is open at the lower end and united with the reservoir, so that oil will not leak at the joint. The wick is cylindricahor a llat wiel; bent into a cylindrical t'orm, und it occupies the space between the air-tube B and the wick-tube D, and this Wicktube D may only extend above the reservoir, or it may pass down into said reservoir, and the devices for raising and lowering the wick may be of any desired character. TWithin the air-tube is a supplemental ai r-tube, E, the lower end of which is sniiiciently large to be in Contact with the exterior of the airtube B, and at this point thesupplelnentnl airtube is soldered tightly to the air-tube. This Serial No. 259,006. (No model.)

supplemental airtube E tapers slightly, so that its upper end is ataslight distance Within the upper end of the air-tube B; hence any oil that may pass over the top of the air-tube B will run down into the spacebetween such airtube B and the supplemental air-tube E, and one or more openings are provided, suoli as at F, in the air-tube, so that the oil may return through suoli openings into the reservoir of the lamp.

The upper part of the air-tube B, between the supplemental air-tube Band the wick, may be more or less perforated, as desired, and by preference it is made as a xture; but it might be removable vertically to facilitate the cleaning of the lamp. At the upper end of this supplemental air-tube E there is a ameregnlator, which I prefer to make as a foraminons skirt, G, resting upon the top of the supplemental airtube,with a ledge to retain the same in the proper position, and the defiector H is in the form of a dish or button head at the top of this foraminous skirt G.

It will now be understood that the top end of the wick being outside the air-tube B cannot come into contact with either the supplemental air-tube E or the foraminous skirt G, and the Haine will burn above the top edge ofthe air-tube,and it will be supplied with air and deflected outwardly by the air that passes up through the supplemental air tube and through the perforations of the skirt G, and these perforations being fine the currents of air will be subdivided and. will reach the tiame with uniformity, so that the combustion will be perfect.

It is to be understood that any suitable de tlcctor outside the wick-tube and a chimneyholder and chimney are to be used in connection with the present improvement.

l claim as my inventionl. The combination, in an Argand lamp, with the \vick-tubc D,ol" the air-tube B,extending through the fount and connected at its lower end tothe same and perforated about midway of itslength,'and the supplemental air tube E within the air-tube B,and rigidly fastened thereto at its lower end, said tube E being tapering and imperforate, its upper end being smaller than the air-tube B, so that an IOC) annular Space is formed between the parts to annular space is formed between the parts to catch overflowing oil 'and return it to the rescatch overflowing oil and return it to the reservoir, substantially as specified. ervoir, the extreme upper end of the tube E l5 2. The combination, in au Argztnd lamp, being formed with a, ledge or offset which is 5 with the welrtube D',ofthe air-tube B,eXtend adapted to support a foraminous skirt and deing through the fount and connected at its Hector, substantiallyas set forth. lower end to the saine, and perforated about Signed by me this 29th day of December, midwayofits length, aud the supplemental air- 1887.

tube Ewithin the air-tube B, and rigidly fast- LEVIS J. AT\VOOD. Io ened thereto at its lower end, said tube E be- T'Vitnesses:

ing tapering and imperforate, its upper end GEO. T. PINCKNEY,

being smaller than the air-tube B, so that au WILLIAM G. Mo'r'r.

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