US2110641A - althoff - Google Patents

Description

arch L8, 1938 A. ALTHOFF 2,110,641

- COMBINATION HEATING AND COOKING STOVE Filed Feb. 1, 1935 3 Sheets-Sheet 1 uHnUnHuD 0 0 o o 0 0 0 0 0 0' o n H o o 0 m 45 o o o o o o o o o o k 00 oo oo oo oo 0 O O O O upyw zzwyzw March 8, 1938. ALTHOFF 2,110,641

COMBINATION HEATING AND COOKING STOVE Filed Feb. 1, 1935 3 Sheets-Sheet 2 we. I

March 8, 1938.

L. A. ALTHOFF Filed Feb. 1, 1955 I5 Sheets-Sheet 5 29 J6 g r A r V 1'9 42 4a 46 41 J4 1 iii 44 1 I H Wm 29 O f J5 a? F W "H g M l'l |l., J36

1 L L 7 I p 24 23' 495 \2? j j Patented Mar. 8, i938 z ne PATENT OFEQE COMBINATION HEATING AND COOKING STOVE Lawrence A. Althoff, Chicago, Ill.

Application February 1, 1935, Serial No. 4,565

3 Claims.

This invention relates to a combination heating and cooking stove and may be employed in connection with a single unit as illustrated herein or in combination with a cooking range or other form of stove.

A primary object of the invention is to provide a heater and cooking stove which is compactly and attractively constructed, and which may be operated with efliciency and with a modicum of effort. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferred embodiment, by the accompanying drawings, in which Figure 1 is a front view in elevation of a stove construction embodying my invention, the top cover and front door being shown in open position; Fig. 2, a side vie-w in elevation, the front door being closed and top cover being partially raised; Fig. 3, a top plan view, the top cover being partially broken away; Fig. 4, a sectional view, the section being taken as indicated at line 4 of Fig. 2; Fig. 5, a bottom plan detail view; and Fig. 6, a sectional view, the section being taken 25 as indicated at line 6 of Fig. 1; and Fig. '7, a sectional detail view of a modified form of the invention.

In the illustration given, I provide an angle iron base ill supported upon legs ll. Clamped between the legs ii and the angle iron base It] are the lower turned edges of metal side walls I2. The rear wall l3 rests upon the base Ill as shown more clearly in Fig. 6, and is provided with an aperture it through which the outlet flue I5 extends.

The front of the range is provided with side frame pieces it and a door ll is hinged to the side frame piece it. It will be observed that the door does not extend to the top of the outer frame casing, but terminates at. a point substantially flush with the inner stove top. A top cover member l8, hingedly connected at its rear end, is provided at its front end with a depending wall I!) adapted to meet substantially the top of the door ll. The top cover it is preferably provided with air outlet openings 20, and the side walls l2 are also provided near their top with air openings M.

The inner stove is preferably a unitary structure resting upon the angle iron frame H0. The structure may be of cast iron or any other suitable construction. As shown more clearly in Figs. 4 and 6, the bottom wall 22 is provided at its forward end with a depending flange 23 which rests upon the angle iron in. The rear end of the bottom wall 22 is secured to the rear wall l3 by flanges 24. The bottom wall is provided near its forward end with a depending box 25 having air openings 26 therein controlled by the perforated plate 21 which is slidably secured to box 25 by screws 28 which engage slots 29 in plate 21. A pivoted bar 30 is provided with a handle 3| extending to the front of the stove and providing a means for controlling the inlet of air.

The bottom plate 22 is supported above the base It and the bottom wall of box 25 so as to provide an air space therebetween. The plate is provided with air openings 33 just above the box 25 to permit air to pass from the box upwardly along the sides 34 of the inner stove. Spaced inside of the walls 36 are air inlet walls 35 which, together with walls 34, provide an air space directly above the slots 33. An ash hopper 0r bin 36 is slidably supported inside of walls 35 and upon the plate 22. ecured to the side walls 34 directly above the walls 35 are downwardly and inwardly inclined baffles or guides 37. The baflles 3i are spaced sufficiently above the walls 35 to permit air to pass under the inner free ends of the baffles and then upwardly through the grate.

The grate 38 of well known construction is supported above ba-flles 37!, and a fire-box 39 also of well known construction is supported upon members 40 which are secured to the walls 34 and which also form a portion of the grate. In View of the well known construction of the fire-box and grate, a detailed description will not be given.

The rear top wall of the inner stove is adapted to serve as a cooking top and is provided with a removable circular top ll. The forward end of the stove top is in the form of a lift door 42 which is hinged at its rear side to an intermediate portion 43 of the stove top. The forward end of door lZ engages a front beam or bar M which serves as a rest for the coal scuttle when the door 42. is raised. The fire-box 39 is also provided with the usual door closing the front side of the fire-box.

In order to support the top cover it), I provide a latch member 36 which is provided with notches adapted to engage the lug i'l carried by the outer stove frame, as shown more clearly in Fig. 3.

In the operation of the stove, the required amount of air may be admitted through the bottom air box 25 by sliding the damper plate 27 to the desired position. The air enters, as shown more clearly in Fig. 4, through the apertures 26 and then through slots 33 in plate 32. The air passes upwardly through passages formed by walls 34 and 35 and then inwardly under bafiies 31. The prewarrned air then passes through the bottom of grate 38 and directly into firebox 39. If desired, openings may be provided in the lower portion of side walls 34 adjacent the walls 35 for allowing the admission of air to the inner stove, but I prefer not to have the air enter at a point thereabove. The inwardly turned baffles 3'! prevent the air passages from being clogged with ashes and at the same time, direct the ashes into the hopper 35. The air outside of the inner stove enters at the bottom of the range and passes along the sides I2 in contact with the heated walls 34 of the inner stove. The air then passes out of openings 23 at the top of the range and side openings 2|.

When the top cover I8 is in lowered position and the front door I1 is closed, the inner stove is completely hidden from View and the entire structure functions efficiently as a heating stove. When the cover [8 is raised, the top of the inner stove is exposed and the cooking top may be used. When it is desired to replenish the coal supply, the front top 42 may be raised to a position slightly tilting rearwardly, at which position it maintains itself, and a scuttle of coal may be raised so that the neck thereof rests upon beam 44. In this manner, coal may be readily and quietly fed into the fire-box. With the construction illustrated, the top cover of the range is supported at a suitable distance above the heated top of the stove so as to prevent injury thereto from the heat, while at the same time, the stove 42 is rendered readily accessible for replenishing the coal supply. It will be observed that the depending wall IQ of the top cover l8 terminates substantially in line with thecross beam 44.

In the modification shown in Fig. '7, the cover 48 is divided intermediate its length and provided with a hinge 49. The forward end of the cover 48 is equipped with a perforated lug 50 adapted to receive one end of a hook 5|. The other end of the hook engages a metal loop 52 secured to the lift-cover 53. With this construction, the cover 48 and lift-top 53 may be lifted simultaneously with one hand when it is desired to introduce coal into the fire-box below the lifttop 53.

While in the foregoing illustrated description, I have set forth a specific preferred structure, it will be understood that considerable variation may be made in the details of construction without departing from the spirit of my invention. The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in View of the prior art.

I claim:

1. In a structure of the character set forth, an inner stove, a sheath-casing extending about the sides and above the top of said stove, said sheathcasing being open at its bottom and spaced from the sides of said stove, a front casing wall extending up to a point adjacent the top of said stove, a cover hingedly connected at its rear end to said casing, and a front wall portion attached to said cover and depending perpendicularly from the front end thereof.

2. In a structure of the character set forth, an inner stove, a sheath-casing extending about the sides and above the top of said stove, said sheathcasing containing an opening in its bottom and being spaced from the sides of said stove, a front casing wall extending up to a point adjacent the top of said stove, a cover flush with the top of said sheath-casing and hingedly connected thereto, and a front wall portion attached to said cover and depending from the front end thereof, the sides of said front wall portion being flush with the sides of said cover.

3. In a structure set forth, a base supported by legs, an inner stove structure supported on said base, and an outer casing about said inner stove structure, said casing having a pivoted cover extending at a space distance above the top of said inner stove structure, said cover having a depending front wall with its lower edge substantially aligned with the top of said inner stove structure, said stove structure and outer casing providing an uninterrupted air passage from the bottom to the top of said casing.

LAWRENCE A. ALTI-IOFF.

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