US942823A - Miner's lamp. - Google Patents

Description

R. L. GRAVES.

MINER/S LAM APPLICATION FILED APR. 26, 1909.

Patented Dec. '7, 1909.

Ill'llll lllllllllllllml //Vl/E/VTOR RALPH L. GRAVES ATTORNEYS RALPH L. GRAVES, OF SUMPTER, OREGON.

IVIINEBS LAMP.

Specification of Letters Patent.

Application filed April 26, 1909.

Patented Dec. 7, 1909.

Serial no. 492,217.

T 0 all whom it may concern:

Be it known that I, RALPH L. GRAVES, a citizen of the United States, residing at Sumpter, in the county of Baker, State of Oregon, have invented an Improvement in Miners Lamps, of which the following is a specification.

My present invention is an improvement upon those for which I have received Letters-Patent No. 853,078, dated May 7, 1907, and No. 886,20 dated April 28, 1908.

1.11 both the inventions covered by above patents, the lamp is provided with means connected with the wick-tube, for heating and liquefying paraffin or other solid hydrocarbon, whereby it may be taken up by the wick and burned for illumination. In both cases, heat-conducting wires are employed in connection with the wick proper, the same being extended alongside the wick and down into the body of the lamp. These wires being heated by the flame, conduct suilicient heat into the body of solid paraffin or other fuel held in the lamp, to liquefy the same so that it is readily taken up by the wick and consumed in the usual way. In practice, it has been found necessary to employ more than one of such heat-conductors, since it often happens that a breeze or draft drives the flame to one side of the wick, and, in such case, but one conductor would be heated, which would be insufficient to liquefy the paraiiin to the required degree. The conductors, however, often become overheated, or heated too highly, and my present invention relates to means for adjusting the projecting ends, or outer extensions, of the concuctors so that they may be brought into close proximity with the wick and flame, or moved laterally therefrom, as conditions require.

The details of construction, arrangement, and combination of parts are as hereinafter described, and illustrated in the accompanying drawing in which Figure 1 is a longitudinal section of my improved lamp. Fig. 2 is an enlarged horizontal section on the line 2-2, Fig. 1. Fig. 3 is a similar section, save that the heat conductors are shown adjusted farther from the wick. Fig. 4- is a side view showing a modification; and Fig. 5 is a plan view of an adjustable disk forming a part of the modified invention.

The body of the lamp may have any ap proved construction, and it is provided with a spout arranged in the usual way. A wicktube is connected with the cap of the spout and extends down to near the bottom of the body of the lamp. Within this tube is ar ranged a wick container, or wick proper, which may be composed of conductive material, such as copper wires.

It is to be understood that the wick-tube and wick proper may be constructed in any approved manner so long as the wick shall be capable of taking up liquefied paraflin or other hydrocarbon. Heat-conducting wires 1 are arranged alongside the wick, or wicktube, and extend down into the body of the lamp, as shown in Fig. 1, and also project from the spout-cap, or burner, as shown. preferably employ several of these wires, which are arranged around the wick concentric therewith as will be seen by reference to Figs. 2 and 3. The flame of the wick heats the extended or outer ends of these conductors, and thus sufficient heat is conducted to fuel in the body of the lamp to liquefy the same, so that it may be taken up by the wick and burned in the usual way. It often happens, however, that the projecting portions of the conductors 1 become too highly heated, and I have, therefore, provided for adjusting them laterally with reference to the wick in order to lessen the heat as may be required.

In the preferred form of my invention illustrated in Figs. 1, 2, 3, a disk 2 having a series of arc-shape eccentric slots 3, is aplied to the collar of the burner so as to be rotatable thereon. The conductors 1 pro j ect through the said slots, and it will, therefore, be apparent that, by rotating the disk 2 more or less, the conductors may be moved outward or inward as required to decrease or increase the degree of heat received from the flame of the burner. In Fig. 2, the disk 2 is shown adjusted in such manner that the conductors 1 are held close to the wick; but, in Fig. 3, the disk is shown adjusted so that the conductors are at the outer ends of the slots and thus farthest from the wick. it is obviously practicable to adjust the disk 2 intermediately of these extremes, so that the conductors 1 will occupy a position midway between the two extremes indicated by Figs. 2 and 3. Since the disk 2 may become heated to such degree that the miner cannot rotate it by gripping it between a thumb and finger, the disk may be provided with a lateral projection, and thus, with a piece of coal, or a knife, or other suitable article, the miner may move the disk one way or the other as required.

In the modification shown by Figs. t and 5, the disk 2 is not rotatable, but adapted to slide vertically on the burner and the conductors l pass through slightly enlarged openings in such disk. It will be seen that, by pushing the disk 2 down on the burner, the conductors 1 may be moved from the flame, or projected outward at a slight angle.

as indicated by dotted lines Fig. 4. Thus the same result will be attained as with the construction and combination of parts illus trated in Figs. 1, 2, 8.

What I claim is:

1. In a miners lamp of the type indicated, the combination, with a wick and burner attachment, and a series of wire conductors w extending into the body of the lamp and projecting alongside the protruding portion of the wick, and a movable device applied to the outer ends of the conductors and adapted, when duly adjusted, to force them laterally toward or from the wick, as shown and described.

2. In a miners lamp of the type indicated, the combination with a wick and burner attachment, and a series of conductors extending into the body of the lamp and projecting alongside the protruding portion of the wick, of means for adjusting said conductors laterally with relation to the outer end of the wick, the same consisting of a disk which is movable on the burner and provided with openings through which the conductors project, the adjustment of the disk in one direction or the other serving to proj ect the conductors more or less, in the manner described.

8. In a miners lamp of the type indicated, the combination with a wick and burner attachment, and a series of conductors extending into the body of the lamp and projecting alongside the protruding portion of the wick, and a disk mounted rotatably on the burner and provided with a series of eccentric slo'ts through which the said conductors project, whereby, upon rotation of said disk, the conductors are moved outward or inward correspondingly.

R. L. GRAVES.

Witnesses SoLoN C. KEMoN, AMos W. HART.

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