US594993A

US594993A - Baking

Info

Publication number: US594993A
Authority: US
Publication date: 1897-12-07
Anticipated expiration: 1914-12-07

Description

(No Model.) 2 Sheets-Sheet 1.

O. K. HARRY. BAKING, COOKING, AND HEATING FURNACE.

No. 594,993. Patented De0.'7,1897.

,04 544A i z/XW a9 2 Sheets-Sheet 2;

(No Model.)

0. K. HARRY. BAKING, COOKING, AND HEATING FURNACE. No 594,993.

Patented De0.7, 1897.

UNiTnn STATES OYVEN K. HARRY, OF DALLAS, TEXAS.

BAKING, COOKING, AND HEATiNG FURNACE.

SPECIFICATION forming part of Letters Patent No. 594,993, dated December 7, 1897. Application filed August 21, 1896. Serial No. 603,500. (No model.)

To all whom it may concern:

Be it known that I, OWEN K. HARRY, a citizen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented a new and useful Improvement in Baking, Cooking, and Heating Furnaces, of which the following is a specification.

The object of my invention is to provide a light and inexpensive baking, cooking, and heating furnace to be used for general household work, such as heating flat-irons, broilin g meat, baking bread, the.

My invention consists in the mechanism and peculiar arrangements of parts, as illustrated in the accompanying drawings and particularly pointed out in the claims.

Figure 1 is a front elevation of the device complete. Fig. 2 is a vertical section through Fig. 1. Fig. 3 is a section through the lower part of the furnace from A to A, Fig. 1, showing in a plan view the construction of the sliding door of the aslrchamber. Fig. showsa section through the vertical wall of the furnace, the sliding door, and Wires of same from B to B, Fig. 1.- Fig. 5 is a section in a plan view through the bakingoven from O to 0, showing the lower end a of the draft-pipe extending down to and opening into the baking-apartment. Fig. 6 is a plan view of the bottom of the baking-oven.

Similar numerals of reference refer to similar parts throughout the several views.

The numeral 1 is the side walls of a bakingoven having the top 2 and bottom 3, provided with two wing-shaped flanges 4: at, which are out partly loose from the bottom, with their ends 5 5 turned outwardly, leaving two orifices 6 6 through the bottom. Extending through the oven from the front wall to the rear wall, Fig. 5, is a baking-apartment Z, the front and rear ends being rigidly secured to the said walls. The baking-apartment is provided with side walls 8, top 9, (which covers the baking-apartment from dotted lines 9 to the rear wall 1, leaving a small space in front between the dotted line 9 and the front wall of the baking-apartment uncovered,) bottom 10, false bottom 11, and cold-air chamber 12, provided with air-holes 12 and a door 12*, opening into the baking-apartment.

It will be observed from the sectional draw ing, Fig. 2, that in the position occupied by the baking-apartment in the baking-oven the hot-air chambers 13 are formed. To the bottom 3 of the baking-oven is rigidly secured a circular flange 14, which will be hereinafter fully explained.

Below the baking-oven is a detachable furnace 15, having the corrugated side walls 16, curved rim 17, and curved base 18, concave grate 19, (with apertures 20 through it,) and curved flanged edges 21, which fit snugly within one of the corrugations of the side walls. Below the grate is an ash-chamber 22, having a bottom 23 with curved flanged edges 2 L, which also fit neatly in one of the corrugations of the side walls. The ash-chamber is pro vided with a sliding door 25, (its peculiar construction being shown in Figs. 3 and 4,) in which 16 are the corrugated side walls of the furnace.

26 are two wires or bands encircling the outer surface of the walls of the furnace in such a manner that a corrugated sliding door is engaged in between the corrugated walls andthe wires or bands.

The wall of the furnace is constructed of metal. The sheet of metal is corrugated and formed into a cylinder of the proper size. The bottom is cut out of metal in the form of a disk, and a flange is formed on the rim or edge. It is then put in the cylinder and lodged in one of the corrugations at the desired lo cation. Pressure is then applied to the cylinder. This closes the cylinder on the flange of the disk, and enough pressure is applied to the cylinder to crimp the flange securely into the corrugation. the cylinder are then riveted together.

As to the operation of my device a door could be had through the side walls of the furnace at a point just above the ash-door leading into the fire-box, through which a fire could be made on the grate. In the arrangement shown in the drawings it, will necessi tate the baking-oven being detached from the furnace, so that a fire can be kindled in the fire-box, which when done the oven is placed on the furnace, the flange 14; extending downwardly into the fire-box 27 in such a manner that the draft-holes 28 in the upper end of the furnace are cut off. The heat arising from the fire-box is deflected by the wing-shaped flanges of the bottom of the baking-oven,

The two ends forming taking two distinct courses through the hotair chambers 13, thence through the space 13 into the baking-apartment, thence out through the draft-pipe 29, (the course taken by the heat being outlined by arrows numbered from 1 to 4:, as shown in Fig. 2.) In such an arrangement of the draft the heat is applied with the same density to the two sides of the baking-apartment and the interior of the baking-apartment. would otherwise be subjected to the greatest heat, is provided with a cold-air chamber, supplied with cold air from the outside, (through the perforations in the end walls,) which prevent the bottom of the bakingapartment from becoming too hot. The heat generally passing through the oven will be controlled by the damper 29 in the draft-pipe 29 and door of ash-chamber.

To prevent the bottom of the ash-box from becoming too hot, the holes 30 are cut through the walls of the lower end of thefurnace for the admission of cold air. The draft is created in the fire-box by the passing of the air from the outside through the door leading to the ash-chamber, thence through the perforations of the grate to the fire in the fire-box.

It is also my purpose to use the furnace for other purposes, such as heating water, broiling meat, heating fiat-irons, &c. The door leading into the ash-chamber is sufficient in height 'and width to admit of broiling and baking in the ash-chamber, if desired.

I am aware that a number of furnaces and baking-ovens are now in use, and I shall point out some of the advantages I have in my de vice over all others.

Vith reference to the arrangement of the hot-air chambers in the baking-oven and the manner the heat or hot air is applied to the walls and the interior of the baking-apartment, incombination with the effect of the cold-air chamber below the bakingapartment, special attention is directed.

The side walls 16 of my furnace are made of steel metal, and by reason of this material The bottom, which being corrugated I get the greatest strength from so thin and light material.

' and contraction by heat is overcome.

I-Iaving explained all that is necessary for a clear understanding of those skilled in the art to which it appertains, what I claim, and desire to secure by Letters Patent of the United States, is

1. In a baking, cooking and heating furnace combined, having a baking-oven with side walls 1, top 2, bottom 3, with wing-shaped

flanges

4, 4, provided with a baking-apartment 7, having side walls 8, cover 9, bottom 10,, false bottom 11, cold-air chamber 12, airholes 12, hot-air chambers 13, and a draftpipe 29 with a damper 29, all for a purpose as substantially set forth.

2. In a baking, cooking and heating furnace combined, having a furnace, with corrugated side walls 16, with curved rim 17, curved base 18, concave fire-grate 19, having holes 20, and curved flanged edges 21, supported by one of the corrugations of the side walls 16, ashchamber 23, with curved flanged edges 24, supported by corrugated walls 16,

I with a sliding, door 25, which is engaged in between the corrugated side walls 16, and two wires or bands 26, which encircle the outer surface of corrugated walls 26, fire-box 27, and draft-holes at the top of furnace 28 and vent-holes 30, all for a purpose as substan-. tially set forth.

OIVEN K. HARRY.

WVitnesses:

JOHN FISHER, H. H. HAWLEY.