US1724683A - Heating stove - Google Patents

Description

2 sheets-sheer l Innen oz anozmu Aug. 13, 1929. G. G. scARBoRoUGH HEATING STOVE Filed July 2, 1928 Aug. 13, 1929.

G. G.v SCARBOROUGH HEATING s'TovFJ Filed -July 2, 1928 2 sheerssneem 2 gnve'ntoz Patented Aug. 13, 1929.

UNITED STATES GEORGE G. SCARIBOROUGH, 0F GIRDLETREE, MARYLAND.

HEATING STOVE.

Application filed July 2, 1928. Serial No. 289,770.

My present invention-relates to improvements in heating stoves and is particularly an improvement on the stoves shown in my prior U. S. Patents 1,343,645 and 1,500,725 heretofore granted to me. l

One object of the present invention is to provide improved means for sustaining the inner shell and the fuel magazine within the outer shell.

Another object is to provide improved means for insulating the fuel magazine for a material portion of its length whereby the fuel in the magazine will .be protected against excessive heat before it passes into the lire-box.

A further object is to separate the fuel magazine from the inner shell whereby damage to the one will not require a renewal of bot-h when making repairs, and

A still further object is to provide an improved construction of inner shell and the means for supporting it in an elevated position above the fire-box.

With these, and other objects in view, the invention is illustrated in the accompanying drawings, wherein,-

Fig. 1 shows a vertical longitudinal section through the complete stove.

Fig. 2 illustrates a vertical sectional detail to show the means for supporting the inner shell and magazine from the upper rim-edge of the fire-box.

Fig. 3 shows a vertical sectional detail through the fire-box `and ash-chamber to illustrate how the grate is supported.

Fig. 4 illustrates a cross-sectional detail through the stove,-the section being taken on the line 4 4 of Fig. 1, and

Fig. 5 shows the stove in front elevation.

Referring to the drawings, the numeral 7 designates the ash-box which, in practice, is of a rectangular shape but has a circular opening in its top with an up-turned annular flange 8 around said top-opening.

The ash-box is supported in an elevated position by suitable legs 9 and has a hinged door 10 at the front side thereof by which I access may readily be had to the interior of the ash-box for the removal of ashes.

The upper or top wall of the ash-box is provided with a plurality of depending brackets 11 with inturned horizontal lower ends 12, which form a support for the grate 13.

The fire-box 14 comprises a tapered vertical shell having its lower smaller end 15,

fitting snugly in the circular top opening of the ash-box with its outer side engaged by the tip-turned annular flange 8 and suitable bolts or fastenings 16, pass through the flange and fire-box Wall to rigidly secure the two together.

The upper larger end 17 of the fire-box has an out-turned horizontal flange 18 which is annular, and which is provided with an upwardly-projecting bead or flange 19. An annular ledge 2O is also provided on the upper edge of the fire-box at the inner side of the rip-turned flange 19 for a purpose that will presently be explained.

On the top of the out-turned flange 18 of the fire-box, I seat the lower edge of an annular or cylindrical sheet-metal cylinder 21, said lower edge of the cylinder encircling the up-turned flange 19 and being secured thereto by suitable fastenings 22 which eX- tend horizontally through the flange 'and also through the cylinder-Wall.

A door 23 is provided in the outer cylinder 21, preferably, just above the top of the fire-box.

A cast-metal head or top 24 fits down on the sheet-metal cylinder 21 and is secured thereto by bolts 25. This head or top has a central filling-opening 26 around which there is a depending annular flange 27, and this latter flange is preferably provided with a small vent-port 28 for a purpose that will presently be explained.

An annular up-standing bead or flange 29 is provided around the filling-opening 26 of the top and a removable cover-plate 30 seats on the bead and covers the opening.

At the rear, the head or top 24 has a flanged opening 31 with which the smokepipe (not shown) will connect, to carry off smoke, gases and products of combustion which escape through the smoke-pipe to the chimney.

On the interior of the outer cylinder 21, I provide an inverted conical receptacle 32 which I preferably form from cast-metal with a central opening 33 therein and having a horizontal ledge 34 at its upper side around said opening.

Secured to the inclined wall of this conical receptacle 32, are a series of downwardly and outwardly-inclined legs or feet 35, which latter seat on the annular ledge 20 of the fire-box at the inner side of the bead or flange 19.

The legs or feet 35, have inclined upper ends which seat against the under inclined side of the conical receptacle and are detachably secured thereto by bolts 36 which are tapped into the receptacle-wall- This construction permits the removal of the legs and their replacement by new ones Whenever renewal becomes necessary without renewing tically within the outer cylinder 2l but is sufficiently smaller than the latter in diameter to provide an annular flue or space 39 all the way around between the two cylinders, which flue is completely open and unrestricted from the top to the bottom of the inner cylinder.

Inside of the inner cylinder 38, I provide an insulating cylinder 40 whose lower end seats on the horizontal ledge 34 of the coni" cal receptacle around, but spaced from the central opening 33, and this insulating cylinder together with the cylinder 38, form an annular chamber in which a packing or filler of heat-retaining material 4l, such as sand, may be placed.

A ring cover 42, is provided over the top of the cylinder 38.

A magazine cylinder 43, extends down through the insulating cylinder 40 but is of sufliciently smaller diameter than the insulating cylinder to provide an annular insulating space 44 between the said two cylinders. This magazine cylinder has its lower end projecting through the central opening -33 of the conical receptacle and is provided with an annular circumferential boss 45, which seats upon the horizontal ledge 34, of said conical receptacle and by which itis supported.

The upper end of the magazine cylinder 43, telescopically lits within the depending annular' flange 27 around the central opening of the head or top.

It will be understood that the fuel for `fire will be fed into the top of the magazine cylinder 43 and will automatically feed out by gravity at the lower end of said cylinder as it is consumed at the bottom in the firebox.

The heat from the burning fuel passes up beneath the cast-metal conical 4receptacle and then up through the unrestricted annular flue 39 where it will heat the walls of both the outer and inner sheet- metal cylinders 21 and 38.

The hot products of combustion when passing up through the annular flue 39 will also heat the filler 4l in the space between the inner cylinder 38 and the insulating cylinder 40, thus storing up heat that will be effective through radiation for a comparatively long time.

The insulating cylinder 40, provides the insulating space 44 around the magazine cylinder 43, and thus keeps that cylinder and the fuel therein comparatively cool so the fuel will not be consumed too rapidly.

I have noted that frequently gas collects in the top of the fuel magazine beneath the cover 30 and is liberated into a room when the cover is removed. By providing a small vent port 28 through the magazine cylinder wall, I find that the draft from the stack will allow the gas to pass off and thus avoid this annoyance.

Having described my invention, I claim zl. In a magazine stove the combination with a {ire-box having a flat top edge with an upwardly-projecting flange around said flat top, of an outer cylinder attached to the outer side of said upwardly-projecting flange, a top over the outer cylinder, an inverted conical receptacle in the outer cylinder and having a central opening with a horizontal ledge around the opening, legs attached to the inclined bottom of said conical receptacle and inclining outwardly and seating on the flat top of the lire-box at the inner side of the said upwardly-projecting flange, a cylinder attached to the conical receptacle and extending vertically within but spaced from the outer cylinder and a cylindrical magazine extending down through the conical receptacle and having means to engage the horizontal ledge on the said conical receptacle.

2. In a magazine stove the combination with a fire-box, of an outer cylinder supported by and projecting above the tire-box, an inner cylinder supported within the outer cylinder but spaced from the latter, amagazinc cylinder and an insulating cylinder interposed between the magazine cylinder and the inner cylinder and forming an annular space between itself and the wall of the inner cylinder and a filling of heat-retaining material in the space between the inner cylinder and the insulating cylinder. y

In testimony whereof I affix my signature.

nis GEORGE GLMXk SGARBOROUGH.

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