US1718186A - Stove - Google Patents

Description

June 18, 1929. L. T. WILCOX STOVE 2 Sheets-Sheet Filed Aug. 9, 1927 gh wento'c LEW/S 7: W/LC'OX athew W15 L. T. W] LCOX June 18, 1929.

STOVE Filed Aug. 9, 192.7 2 Sheets-Sheet 2 @21 M mm Patented June 18, 1929.

UNETED STATES LEWIS T. WILCOX, OF PEEKSKILL, NEW YORK.

STOVE.

Application filed August 9, 1927.

My invention relates to stoves, particularly cooking stoves, and has an especial utility in such stoves of the burner type, as gas or oil stoves.

Specifically my invention relates to the construction of a stove top which enables a single burner to serve two cooking holes. I have disclosed in my pending application Serial No. 169,446 (now Patent No. 1,649,002) a device for this purpose known as a heat collector, which is an elongated tray or pan like article so associated with the under side of the stove top as to connect two adjacent cooking holes and form a passage within which the hot gases from the burner are collected and conducted from heating relation with a utensil on the first hole to heating relation with a utensil on the second hole. The gases enter the collector through an opening underneath the first hole and a special grate which cooperates with the collector to cause the gases to heat the second utensil efliciently is disclosed in my pending application Serial No. 16.9,144, now Patent No. 1,649,006.

This invention in one of its aspects has reference to the connection between the stove top and the heat collector. In another aspect it has reference to a special and improved form of the heat collector itself.

In the construction disclosed in my said copending applications, the stove top or part thereof forming a key plate has its pair of cooking holes, which are connected by the heat collector, separate in the stove top. In accordance with my present invention these are united. In other words the top has an elongated continuousopening therein which includes the two holes and the space between. the two, the middle portion between the round ends being ordinarily somewhat restricted in width as compared to the diameter of the cooking holes. The margin about the opening is shouldered to form a grate ledge so that the grate will sit in flush with the stove top. The heat collecting pan conforms to the shape of the elongated opening and is joined to the stove top about the grate ledge, either being drawn from sheet metal or otherwise formed integral therewith, or being provided with an outward flange and resting thereby upon the grate ledge.

The heat collector may in any event be drawn from sheet metal If used with an oil burner having a chimney, it may be provided in one end with an opening in its bottom within which the upper end of the chimney may Serial No. 211,677.

fit, and then for the admission of air this opening may be surrounded by a series of small holes.

Other details of my invention will appear from the following description. I shall now describe the illustrated embodiments of my invention and shall thereafter point out my invention in claims.

Fig. 1 is a plan of a stove embodying my invention, the grate member being removed from one opening;

Fig. 2 is a transverse section of the same on line 22;

Fig. 3 is a transverse section of the same on line 33;

Fig. 4: is a detail in plan of the heat collector;

Fig. 5 is a side elevation of the same;

Fig. 6 is an enlarged longitudinal section on line 66 of Figure 1;

Fig. 7 is a View corresponding to Figure 1 of a somewhat dilferent embodiment of my invention Fig. 8 is a longitudinal section of the same on line 88 of Figure 7;

Fig. 9 is a view similar to Figure 7 of still another embodiment, and

Fig. 10 is a longitudinal section of the same on line 1010 of Figure 9..

In the embodiment shown in Figures 1 to 6. the stove top 1 is a sheet metal member and includes four cooking holes. These are coupled in two pairs, the front hole of each pair being secured with a source of heat. The metal of the top between the two holes of each pair is removed in each instance. In other words the top is provided with two elongated continuous openings each including a fron and rear hole, the middle portions of the openings being somewhat restricted in width, the opening thus approximating the shape of a figure 8.

The entire stove top in this construction is in one piece. The margin about each elongated opening is depressed to form a grate ledge 2. In this particular construction the heat collector 3 is a separate, removable member resting upon the grate ledge 2. This heat collector is drawn from sheet metal and is a comparatively shallow pan or tray of the same outline as the elongated holes in the stove top 1. .Around its upper edge it is provided with an outwardly turned flange 3 which rests upon the ledge 2 when the heat collector is dropped into its opening in the stove top. In the form shown it is deepest in the middle where its width is most restricted and the bottom slopes up toward each end. A round hole 3 in the bottom of one end has an upturned flange within which fits the chimney 4 of the burner. Around the opening 3 the bottom is provided with aseries of small holes 3 which constitute air inlets. This construction in which the heat collector is a separate, removable member is disclosed and particularly claimed in my copending application Serial No. 213,476 (now Patent No. 1500,755).

A suitable grate is provided in each cooking hole to support the cooking utensil over the hole. The grate for the first hole. i. e. the one immediately over the burner will be flush with the stove top so that the heat will not escape around the vessel on that hole. The grate for the remote hole will be raised above the plane of the stove top so as to induce a draft and bring the hot gases into eflicient contact with the bottom of the vessel on that hole, as explained in my said copending application Serial No. 169,444.

In the illustrated construction a one piece grate member 5 is provided which, in this instance, is formed of sheet metal. This is of the same shape as the elongated openings in the stove top and rests upon the flange 3 of the heat collector, the ledge 2 being depressed just enough to bring the grate top flush with the stove top.

To form the grate for the first hole, i. e. the one over the burner, the metal is cut out in circular outline but with inwardly extending radial fingers 6 left to constitute the grate bars. These grate bars for the first hole are therefore flush with the stove top. They are strengthened by having their lateral edges turned down to form depending flanges 6 (Fig. The metal which is left to form these flanges in cutting out the blank is indicated by the dotted lines in Fig. 1.

The grate opening for the rear hole is also of generallycircular outline except that segmental portions 7 are left at each side. The inner edges of. these segm etal portions are severed at their ends in cutting out the blank and these edges are turned up to form raised grate bars 7 extending from front to rear. Between the two grate bars 7 there are left in cuttingout the blank two intermediate grate bars 8 and 9 extending from front to rear which have their inner edges 8 and 9 turned up to the height of the flanges 7 and which have their outer edges. 8 and 9 turned down for substantially thesame distance. Around the backof the grate is an upstanding arcuate baffle 10 which, in the form shown. is a separate sheet metal strip which.

is secured around the outer edge of the grate member by means of spaced prongs which project through holes in the grate and are turned over against the underside.

The flanges 8, 8 and 9, 9 serve as vanes to keep the heat evenly distributed while the in'iperforate side segments 7 direct the heat toward the middle of the vessel. The rear ballle wall 10 causes the flow of hot gases to reverse and thus pass in an efficient heat transferring relation to the bottom of the vessel. In stamping out the grate from sheet metah I prefer also to leave curved projections 11 as indicated in dotted lines in Fig; 1, between each grate bar at both the front and rear of the grate openings, and these are turned down in the finished grateas appears in Figs. 2 and 6 and serve both to strengthen the metal at the edge of the opening and also as baflies to aid in directing the current of heated gases properly through the grate. The grate construction is not clainiied herein, but is claimed in my copending application Serial No. 213,476.

In Figs. 7 and 8 is shown a construction in which the stove top is modified. In this form there is employed what is known as a key plate construction. the stove top being made up oftwo identical key plates 12. These fit within a stove top frame 13 resting upon a depressed ledge around its inner periphery.

In this construction each key plate has the heat collector 3 drawn integral therewith. The heat collector is otherwise of the'same construction as that shown in the preceding figures and above described. A grate ledge is formed above the top edge of the flange of the heat collector where it joins with the key plate. In this construction each key plate forms half of the stove top and includes two cooking holes.

In the construction shown in Figs. 9 and 10, instead of thekey plate structure, there is employed a unitary stove top 14 of double size and flanged at its outer periphery to eliminate the necessity of a frame member. In other words the stove top 14 is an integral unit taking the place of the separate frame, key plate and collector and contains two pairs of cooking holes and has therefore two elongated openings each including two cooking holes. The characteristic which is common to the constructions of both Figs. '2' an 9 is the fact that the heat collector is formed integral with the stove top, being drawn from a single piece of sheet metal.

It is obvious that various modifications may be made in the constructions shown in the drawings and above particularly described within the principle and scope of my invention, and that any number of pairs of cooking holes may be embodied to make up one complete stove.

I claim:

1. In a stove, a unitary sheet metal stove top part having therein two cooking holes joined to form a continuous opening and including an integral heat collector, the heat collector being a shallow depression in said top part having the configuration of the two holes and a restricted intermediate connecting passage, the heat collector being integrally united at its upper edge to the stove top part.

2. In a stove, a stove top part and an integral heat collector formed from one piece of sheet metal, said top part having tWo cooking holes therein joined to form a continuous opening, the heat collector being depressed into the stove top part and being of a configuration to include tWo cooking holes and a restricted connecting passage, and hav ing the bottom partially removed at one end to -form a burner opening, the remaining portion of the bottom sloping up from the restricted passage and having the other end iinpertorate and also sloping up from the connecting passage.

3. In a stove, a stove top part having two cooking holes therein, joined to form a continuous opening of approximately the shape of the figure 8 and having a shouldered flange about the opening forming a depressed grate ledge, and including an integral heat collecting portion united to said top part about the grate ledge and having a bottom open one end for the admission of heat and imperforate at the other end.

4. In a stove in combination with a top frame, a removable sheet metal key plate fitting therein and forming part of the stove top and including two cooking holes joined to make a continuous opening having round ends and a restricted middle, and a depressed pan integral therewith conforming in shape to the said opening and joined to the key plate at the margin of the opening and constill'zting a heat collector coupling the tWo cooking holes and having a burner opening in its bottom at one end and being imperforate at its other end. 1

In Witness whereof, I hereunto subscribe my signature.

LEWIS T. WILCOX.

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