US2873A

US2873A - Labd-lam

Info

Publication number: US2873A
Authority: US
Publication date: 1842-12-05
Anticipated expiration: 1859-12-05

Description

P. RoBlNsoN.

`Lard Lamp.

Pate'ted Dc. 5, 1842.-

'UNIRE ABT P. RoismsoN, or oHiLLioorHE, OHIO.

Lann-LAMP.

Specification ofrLetters Patent No. 2,873, dated December 5, 1842.

VTo all whom t may concern Be it known that I, P. ROBINSON, of Chillicothe, in the county of Ross and State of Ohio, have invented an Improvement in the Manner of Constructing a Lamp for the Burning of Lard andother Oleaginous or Concrete Fatty Substances ,and I do hereby declare thatthe following is a full'and exact description thereof.

In the accompanying drawing, Figure l, is a vertical section through they axis of my lamp. v

A, A', is the body, or receptacle, for the lard, &c.

B, is a cup, or piston, illingthe area of the receptacle, which is cylindrical. Around the edge, or periphery, a, a, of the cup, or piston, I wind cotton, iiaX, tow or other material that will not be injured by heat, instead of using leather, which is frequently rendered useless by placing the lamp near the fire.

C, is a screw attached to the bottom of the cup, or piston, and passing through a nut D, in the tubular support E, of the lamp. The body A, is made to rotate by allowing its bottom l), b, which is perforated for that purpose, to be embraced between two'plates of metal c, c, which are soldered to the upper end of the tubular support. Should any leakage take place around the cup B, the material when warmed may be allowed to run down through openings around the nut D, and to pass out at an aperture CZ, left for that purpose.

My principal improvement in this lamp consists in the manner in which I form the wick holder, or burner, E. The body of this I usually make in the form of a globe, or nearly so; this globe, which is hollow, is shown in section in Fig. l; and Fig. 2, is a top, and Fig. 3, a bottom view of it. This burner screws into the top of the lamp, in the usual manner. On its upper side, it has six, or any preferred number of small openings, c, e, e, say of an eighth of an inch in diameter; and on its under side, it has one large central opening, f, exceeding in its area that of the sum of the openings on the upper side; there are, also, a Vnumber of small openings, as shown at g, g, on theV lower side, surrounding the larger opening ff. The small openings on the upper side may have short tubes inserted within them to receive the small wicks which vare to Aloe passed through them. It is not essential to the operation of the lamp, that the wickholder should be globular, although I pre i fer this form. In Fig. il, I have shown it as rising cylindrically Vfrom its screw ferrule,

alternately through one of the smaller, and

through the larger hole, until all the smaller holes have been filled. The holes g, g, are made for the admission of the lard from the body of the lamp into the interior of the burner; and when the cup, or piston, is forced up, for that purpose, there is not the slightest tendency to produce a Adisarrangement of the wicks either in the larger, or in the smaller holes. It is not necessary to employ a guide piece t-o cause the piston to revolve with the body of the lamp, as its friction on the inside of the cylinder, beingV in which I construct my improved lard lamp, what I claim therein as new, and desire to secure by Letters Patent, is

The so constructing` the burner of such a lamp, as to admit of the inserting of aV f number of small wicks through a series of openings in the upper side of such burner, and the passing ofsaid wicks, collectively, through a larger hole, adapted thereto, in its lower side; there being, also, a number of` small holes perforated in the lowerl side of the burner for the admission of the lard, or

otherV fatty matter; the Whole being conthem, by Which a remarkably clear, Whitey strueted and operating substantially as light is produced, and the tendency to le the free admission of atmospheric air around EDWIN L.v BRUNDAGE.

herein set forth. smoke is nearly destroyed. Y Y A V The advantaffe derived from the forego- Y' 5 ing arrangemert of the burner is the perl i P ROBINSON" t feet combustion of the burning fluid, in con- Witnesses:

sequence of the smallness of the Wicks, and THos. P. JONES,