US722987A - Initial-heating device for hydrocarbon-burners. - Google Patents

Description

W.. R. JEAVONS. INITIAL HEATING DEVICE PUR HYDROGARBON BURNERS.

APPLICATION FILED KAB. 6, 1902.

I0 MODEL.

fl-EI.

AT1-EET INVENTDIT.

EN #5MM Am UNITED STATES rPATE-NT OFFICE.

W'ILLIAM R. JEAVON'S, OF CLEVELAND, OHIO.

INITIAL-HEATING DEVICE FOR HYDROCARBON-BURNERS.

SPECIFICATION formingrpart of Letters Patent No. 722,987, dated March 17, 1903.

Application iled March 6, 19027.

To ctZZ whom it may coz/werft.-

Be it known that I, WILLIAM R. JEAvoNs, a citizen of `the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Initial-Heating Devices for Hydrocarbon-Burners; and I do declare that the followingis afull, clear, and exact descrip= tion of the invention, which will enable others skilled in the art to which-it appertains to make and use the same. Y

My invention relates to initial-heating de# Vices for hydrocarbon burners, the said burners being of that class wherein heavy oil, such as kerosene or the like, is vaporized in a trough, and the trough is usually surinonnted with a combustion-chamber having air-inlet openings in its sides at successive elevations.

The object of the invention is to provide a device for such burners which will take and hold a sufficient quantity of oil in its upper portion or edge to always insure a supply of oil for the initial heating of a burner without additional oil-supply or heating from any other source, all substantially as shown and described, and particularly pointed out in the claims.

In the accompanying drawings, Figure lpis a perspective view of the present preferred 'form of my new device with sheet metal 'on both sides and asbestos intermediate. Fig.A 2 is a plan sectional view, and Fig. 3 is a vertical sectional elevation, of a portion of the device shown in Fig. l. Figs. 4 and 5 and Figs. 6 and 7 are sectional edge views and sectional elevations, respectively, of n10ditications of the invention, as hereinafter fully described.

An initial-heating device having the distinguishing characteristics of the one thus shownviz. ,an oil-reservoir at its top-is necessary,for the reason thatit must be made up of a refractory material, such as asbestos card or mill board, ranging, say, from one thirty-second to one-sixteenth of an inch in thickness and which has such small capillary capability in itself, as well as being defective otherwise, that it would fail for the purpose for want of sustained supply of oil without a special construction or formation of its upseriti No'. 96.886. N0 model.)

per edge to receive and hold the oil, and in addition tothis provision for a vertical capillary space or crevice to assist the oil to the top of the device to such reservoir in advance of lighting, as will appear in the further description herein. Such capillary space, crevice, or channel is provided in each and every form of the invention by arranging alongside the asbestos-like fibrous strip or body one or more other strips of asbestos or metal or other equivalent material.

The preferred form of the invention (indicated inFig. l) comprises a strip of asbestos 2, constituting the body of the device supported between two strips of sheet metal 3 and 4, the metal strips .providing capillary crevices or channels on each side of the as# bestos strip for the oil to creep to the top of the device and also forming an efficient support for the somewhat frail asbestos strip. The said metal strips are somewhat narrower than the asbestos, leaving the edges thereof projecting somewhat beyond the metal. These projecting edges of the body are loosened up and frayed, so as to form a bushy cellular top of such capacity for storing oil that it will receive and hold a sucient quantity of oil to initially start the burner. By loosening and spreading out the fiber of the asbestos at the top edge, as described, such edge is rendered receptive and spongy, and a much greater quantity of oil will be absorbed than would be possible if it were not so treated, thus assuring a sufficient supply of stored-up oil at a point where it is required for the initial heating of the burner.

Even after long use when the interstices or fiber at the top of the device become more or less lled with dirt and carbon deposit the rough surface of suc-h deposit of itself pre' IOO of all asbestos with two equal walls 5 and 7, slightly spaced apart by any suitable means, forming a capillary crevice or channel between them. By these means a very shallow yet sufficient capillary-Way is provided for the oil to creep up between the-two Walls of the body, and the action here is practically as in the other forms.

By the foregoing description and views the invention is plainly seen to comprise an initial-heating medium wherein the capillary principle is supplemented bya special formation or provision at the top of the device for holding a supply of oil sufficient alone to effect the initial heating of the burner and depending on continuous capillary function through this period.

The foregoing construction should not be confused with Wicks as such, because a wick is of a nature to at all times and continuously capillarily conduct oil uniformly to all parts of the device, While in this case the device during the operation of the burner is subjected to a higher temperature than is the ordinary wick and is therefore constructed of refractory material which usually has a very small capillary capability itself even if constructed of asbestos with the fiber sufficiently open to at first give a fair measure of capillary action through its body. Such action will be of short duration, as the high heat to which it is subjected, together with Variations in the supply of oil While in this heated condition, very soon causes clogging of the small capillary pores, compelling the oil to travel over the surface of the device rather than through it, as in a Wick. Hence l provide means for promoting surface travel of the oil, as hereinbefore described.

Both edges of the asbestos strip are preferably alike, so that either edge may be used on top, andthere can be no mistake in putting it in place after removal, and when sheetmetal sides are used they are preferably perforated to promote conductivity.

What I claim is-.-

1. An initial-heating device for hydrocarbon-burners having a non-combustible body with crevices at its side to conduct oil to the top thereof, and provided with a frayed-out bushy top edge, thus providing interstices to form a reservoir for oil, substantially as described. n

2. An initial-heating device for hydrocarbon-burners consisting of a brous non-combustible ring-shaped body and a metallic supporting-Wall therefor adapted t0 promote capillary movement of the oil over the surface of said body, and the said body having the fibers of its top edge loosened all around to a uffy mass, substantially as described.

3. As a new article of manufacture, an initial-heating device for oil-burners consisting of non-combustible material and having oilconducting crevices at its side and both edges thereof reduced to a bushy condition to receive oil, whereby said device maybe inverted for use, substantially as described.

Witness my hand to the foregoing specification this 2lst day of February, 1902.

VILLIAM R. JEAVONS.

Witnesses:

R. B. MOSER, T. M. MADDEN.

sev

Images