US1254226A - Oil-burner. - Google Patents

Description

R. HOFFMAN.

0H. BURNER. APPLICATION man Nov. 2|. 1911.

memedl Jan. 22, 1918..

0 O 0 O O 0 0 0 0 j ooooo o 2 3 o o 0 0 d o RUDOLPH HOFFMAN, OF KANKAKEE, ILLINOIS, ASSIGNOR TO SEARS, ROEBUOK AND COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW YORK.

OIL-BURNER.

To all whom it may concern:

Be it known that I, RUDOLPH HOFFMAN, a citizen of the United States, residing at Kankakee, in the county of Kankakee and tate of Illinois, have invented certain new and useful Improvements in OiLBurners, of which the following is a specification.

This invention relates to oil burners provided with tubular wicks, and particularly, although not exclusively, to burners used in the type of stove known. as oil heaters.

The invention has special reference to an air distributer or flame spreader for such a burner, the distributer being provided with an annular flange by means of which the distributer is supported upon the wick. In order that there shall not be excessive vaporization of oil at the inner surface of the wick at the upper edge thereof, it is necessary that the wick flange and adjacent parts shall not become excessively heated; and it is the object of the invention to prevent such excessive heating.

In the accompanying drawings, Figure 1. is a lower side view of an air distributer embodying the features of my invention. Fig. 2 is a transverse vertical sectional view taken in the plane of dotted line 22 of Fig. 1.

In the drawings, A denotes the air distributer and B the tubular wick. The distributer comprises a vertically extending sleeve 1, an annular outwardly extending imperforate flange 2 at the upper end of the sleeve an annular perforated flange 3 extending vertically from the outer edge of the flange 2, and cap or spreader plate t attached to the upper edge of the flange 3. The parts 1, 2 and 3 may, if desired, be formed from an integral piece of sheet metal. The cap 4 is imperforate save that it is provided with a central opening 5 to receive a rod (not shown) carrying the usual stop to limit upward movement of the air distributer and hence of the wick.

Secured to and encircling; the lower portion of the sleeve 1 is a sleeve 6 having an outwardly flaring annular flange 7. A wick flange 8 extends horizontally from the upper edge of the flange 7. The parts 6, 7 and 8 may, if desired, be made from an integral piece of sheet metal. 9 is a frusto-conical or Specification of Letters Patent.

Patented Jan, Q2, fflllfl.

Serial No. 203,144.

' the ring 9 whereby to hold the ring between the wick flange 8 and the bead 10. The sleeve 1 is perforated all the way around, circumferentially of the sleeve, from a point adjacent to the lower portion of the flange 7 to the upper end of the sleeve. The flanges 7 and 9 are similarly perforated, although preferably the perforations in the flange 7 are larger per unit of surface than the perforations in the sleeve 1. Preferably the perforations in the ring 9 are smaller per unit of surface than those in the sleeve 1. The sleeve 1, the flange 7 and the ring 9 define or inclose an annular mixing chamber extending around the sleeve 1 and communicating with the vapor-generating space between the inner surface of the wick B and the distributor, and communicating also with the interior of the sleeve 1 and the space directly above the wick flange 8. A portion of the air current passing upwardly through the air distributor enters the mixing chamber and passes out through the ring 9, thus serving to keep the wick flange 8 cool, preventing overheating of the flanges 7 and 8, and hence preventing excessive vaporization of the oil.

I claim as my invention:

An air distributor for an oil burner having, in combination, a vertical sleeve, an upwardly flaring annular flange surrounding and secured to the sleeve, an outwardly extending annular wick flange connected to the upper portion of the upwardly flaring flange, and a frusto-conical upwardly tapering ring extending from the inner portion of the wick flange to the sleeve, said sleeve, upwardly flaring flange and upwardly tapering ring being perforated and providing an annular mixin chamber arranged to discharge the mixture directly above the wick flange.

In testimony whereof, I have hereunto set my hand.

RUDOLPH HOFFMAN.

Copies of this patent may be obtained for nve cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

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