US1597975A - Kerosene-stove construction - Google Patents

Description

Aug. 31, 1926", 1,59%75 R. Q. HEGGEN$ 1 KEROSENE STOVE CONSTRUCTION Filed P 1925 2 Sheets-Sheet 1 Aug- 31 1926.. 1,597,975

R. c. HIGGlNS KEROSENE STOVE CONSTRUCTION Filed April 20, 1925 2 Sheets- Sheet 2 Patented Aug. 31, 1926.

UNIT-ED stares rareat" caries.

[ROBERT C. HIGGINS, OF SOUTH BEND, INDIANA, ASSIGNOR TD MALLEABLE STEEL 'B-ANGE MANUFACTURING COMP-ANY, OF SOUTH-BEND, INDIANA, A CORPORATIOLN or mint-ALMA. I

KEROSENE-S'IDVE consrnuc'rron.

Application filed April 20, 1925. Serial No. 24,363.

'This invention relates to improvementsin kerosene stoves and more particularly to a new and novel construction for a top plate for kerosene and other liquid hydrocarbon burning stoves.

The object of the invention is to produce an improved stove top, especially adapted for stoves equipped with kerosene burners and calculated to afford more eflicient and uniform. heat- -transmission and distribution to the cooking; utensils placed thereon.

A further object of the invention is to provide an improved construction for a louiurer plate adapted to he placed directly over the burner and so designed as to protect the burner from being; extinguished and otherwise fouled by drippings from the utensils in which food is being; cooked.

A preferred embodiment of the invention isdisclosed in the accompanyingdrawings in which Figure l is a perspective view of a portion of the stove,

Figure 2" is a view in vertical section through the stove top and parts adjacent;

Figure '3 is an enlarged top plan view of a section of the stove top showing the burner plate.

Figure 4 is a section through the burner plate taken on line 4', 4, of Figure 3, andv Figure 5' is a view in bottom plan view of the burner plate.

As clearly shown in Figures 1 and "2, the stove is generally of a design common to stoves oi this character, but differing radically in the construction of the top plate, or heating surface, which in the usual gas or kerosene stove is an open grille extending over the burners. In the present construction the top of the stove consists of a solid cast iron plate 1,v of at least one quarter inch in thicl'mess, with a polished top surface. This top plate may be either of a single piece or made up of two or more sections depending on the size of the stove. The top plate extends over the entire survface of the stove and extends beyond the *ifront and side edgesthereol, terminating in dewnwar-clly curved edge 1% with.

Beneath thetop plate are located. one, two

or more burners .2, designed to burn with an exceedinglyhot blue flame, in the form of a'ring of small jets issuing from the openin'gs around the edge er circular vaporizin'gniember 3, at the top of the burner.

Immediately over each burner is a circular burner plate 4, considerably greater in diameter than the burner .beneath it, and re movably seating in circular openings in the top plate, with its upper surface flush there- The burner plate is also of a solid cast iron construction, but as will presently he seen is something more than a mere circular section of the stove plate.

These plates are cast somewhat thinner than the stove plate,except for a heavy rim 4 extending around the periphery thereof. Immediately inward from the rim s is a series of radial slots 5, extending through the plate and inwardly toward the center a distance equal. to about onehalf the radius of the plate, thus providing a solid or inipertorate central portion approximately the same diameter as the burner top below it.

On the under surface of the plate, Figure 5'isa sp'i'derf-like arrangement of ribs 6, radiating from the center and in alignment with the slots 5, beyond. These ribs taper slightly from the center outward, become less pronounced as they diverge. At. the inner ends of the slots 5 these rihs terminate abruptly in downwardly projecting nubs 7, tapering slightly to a rounded point.

The plate is designed in this way for sev' eral reasons, the most important being to "prevent the plate from warping or cracking under the rapid changes in tempera ture,a-n'di the high temperatures to which 1t is sub ected. This accounts for the "reduced thickness and the radial reinforcing ribs on its under side. The outer ring of radial slots are also prov ded to permit the "heat fronrthe burner to pass throu 'h and come-in contact with the bottom ot'the cookingiut'ensil, although spaced a suilicient distance from the center to avoid direct contact of the flame therewith. In this way theheat ismoreeftecti y" utilized, by pen mitting direct contact of the heat with the utensil beyond the Zone immediately above the flame.

The purpose of the nubs or projections 7 at the junction of the ribs and slots is one 7 especially desirable where burners of the open type are used, as a means for'protect- .ing the burner from being fouled or the flame extinguished by the contents of the utensils boiling over and flowing through the slots in the plate and thence onto the burner. Thus the nubs provide barriers which effectually prevent the liquid from Between the lugs are a series of circumfer ential recesses or notches 9, likewise spaced apart at equal intervals and of about-the same length and breadth as the lugs. These notches form with the edges of the burner plate a series of slots which serve two purposes, first, they provide additional openings to permit the heat from the burner to pass through in direct contact with the bottom of cooking utensil, and secondly, they serve to provide a series of air spaces between the burner plate and the surrounding top plate, thus decreasing the amount of heat which is conducted from the burner plate to the top plate. The desirability of this provision is obvious, since it confinesthe heat to the burner plate, which ordinarly is about the size of the bottom of the cooking utensil and further, it avoids the unnecessary heating of the top plate with the attendant dissipation and loss; of the effective heat from the burner.

The combination therefore of a solid top plate and solid burner plates, imperforate except for the slots, constitutes a practical and useful feature in kerosene stoves of'the vapor or generating type, which burn with i an exceedingly hot flame and therefore much better results are obtained by spreading the heat throughout a larger area of uniform temperature rather than-confining it to a relatively small'area at a very high temperature directly above the burner. This is especially true under ordinary conditions of cooking although it is obvious that where rapid heating is desired the burner plate may be removed, and the cooking or boiling carried on over the .open flame.

The burner plate with provision for protecting the burner against drippings, and the method of supporting the flame so as to confine the heat to an area commensurate to the surface of the average cooking utensil, but greater than the area indirect contact with the flame, is of great advantage in Ob: taining maximum heating eflicient with economical fuel consumption.

I claim as my invention:

1. In a stove of the character described, the combination of a burner, a solid plate of cast metal extending over the top of the stove above said burner and comprising a burner plate having an imperforate por tion located immediately above said burner, a series of radial slots extending from said imperforate portion toward the periphery of said burner plate, and a series of circumferentially spaced slots beyond said radial slots. I

2. In a stove of the character described, the combination of a solidplate of cast metal extending over the top of the stove and provided with a circular opening, a burner mounted beneath said opening, and a plate seating in said opening and having a central imperforate portion immediately above said burner, radially disposed slots extending from said imperforate portion,

and circumferentially spaced slots extending about the margin thereof.

3. In a stove of the character described, the combination of a burner, a solid plate of cast metal extending over the top of the stove above said burner and providedwith an opening immediately above said burner having aseries of circumferentially extending recesses around said opening, and a burner plate'seating in said opening and having an imperforate centralportion substantially greater than said burner, and slots radiating from said central portion,

l. In a stove of the character described, the combination with a burner of a burner plate having an imperforate central portion immediately above, and having a diameter substantially greater than said burner, a series of slots radiating from said central portion, and depending projectings formed on the bottom surface of said plate at the inner ends of said slots.

5. I11 a stove of the character described,

the combination with a burner of a burner plate. above said burner and comprising an iinperforate central portion immediately above said burner, and aseries of slots radiating from said central portion, there being formed on the bottom surface of said plate and at the inner end of each slot a depending nub spaced outwardly beyond the periphery of said burner. v

6. In a' stove of the character described, the combination with a top plate and a burner of a burner plate above said burner and comprising an iinperforate central porterminating at the inner ends thereof in detion of substantially the diameter of said pending nubs, spaced outwardly beyond the burner, and a series of radial slots surperiphery of saidburner. rounding said central portion, there being Signed at South Bend this 17 day of 5 formed on the bottom surface of said plate April 1925.

a series of ribs radiating from the center thereof, in alignment with said slots, and ROBERT C. HIGGINS.

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