US1325106A - Assigstob to ctjltes - Google Patents

Description

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L. R. MOTHERWELL.

STOVE 0R RANGE.

APPucAnoN men SEPT. 22. 191s.

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.rllll sham LEE R. MOTHERWELL, OF PEORIA, ILLINOIS, ASSIGNO'R T0 CULTER & PROCTOR STOVE oo., or recare., iLLiivoIs.

sTovE on. RANGE.

Specicaton of Letters Patent. Patented Dieci; 16, 191.9.

Application filed September 22,1916. Serial No. 121,540.

To all 'whom t may concern.'

Be it known that I, LEE R. MOTHERWELL,

a citizen of the United States, residing at Peoria, in the county of Peoria and State of Illinois, have invented new and useful Improvements in Stoves or Ranges, ofV which the following is a specification.

rIhis invention has reference to certain new and useful improvements in stoves or ranges, and particularly to that type of such stoves or ranges wherein either solid fuel or gas may be burned, as desired.

One of the objects ofthe present iiivention is to so construct the stove or range for use with solid fuel or gas, that either charge of the products of combustion is.

simultaneously opened and closed.

WWK/lie invention has for a further object to improve the burner construction for the oven and the walls of said oven, so as to provide proper channels for the inlet of the air to miX with the gas, and courses of travel of the products of combustion t0 uniformly heat the Oven in the passage of the products of combustion from the burner to the flue of said stove or range.

A further object of the invention is to so construct the main bottom of the stove or range, and its supplemental bottom up through which the products of combustion pass, when the gas burner is used, that said supplemental bottom `will be in the same plane with the surface of the voven door when said door is in its'open or fiat positioii.

A further object ofthe invention is to locate the burners for the stove or rangeat the opposite sides of the oven and to provide asupplemental oven bottom which is perforated approximately centrally thereof to insure the travel of the products of combustion centrally'of the oven' in their passage to the iiue through which said products. of com I bustion escape; and also in the provision of a supplemental rear oven wall open only at its lower edge and under which the products of combustion must travel in their pasl sage to the flue.

The annexed drawings and the followinlT description set forth in detail certain moana; embodying my invention, ther disclosed means, however, constituting but one of various mechanical forms'in which the principle of the invention may be applied. y

In said annexed drawings Figure l. is a plan view, in section, Vof my improved stove or range, as the same `would appear if taken on the line B-B of Fig. 2;

Fig. 2 is a front vertical sectional view of my improved stove or range, parts broken away;

Fig. view of my improved stove or range, as the same would appear if taken on the line A A of Fig. l, and

Fig. lis a perspective view of'one ofthe supplemental side walls, or linings, for the j sides of the oven.

Lilie characters of reference denote corre- I sponding parts throughout the figures.

f I have Vshown the stove or range supported onfthe usual legs l, and having thefire-box 2, tlie'aslrpit 8 therebeneath, the` the escape 0f theV oven i and-flueV 5 for products of combustion to the chimney withwhich said flue inunicatinlggy with the fire-box 2 isa llue or chamber G which overliesthe oven 4, and

- said iuc or chamber 6 communicates with a line or chamber 7 on the farside of? the oven,

and this flue Vor chamber 7 communicatesv` rivr orrion. .e

3 is a vertical' transversesectionalv 5 may be connected. Com-V with a flue or'cliamber 8 underlying the oven 4, and oven bottom 9. The last mentioned Hue or chamber 8 confiinunicatesV with the flue 5 at its lower end. To insure the products of combustion from the fire-box 2 cov-Y ering the whole area of the oven bottom 9,

there is a bathe-plate 10 extending toward the center of the oven from'` the wall of the fine 5 nearest thev center of the stove` o1" range, see Fig. 1.

The description thus far has to do with* the construction ofthe stove or `range whencoal or other solid fuel is usedto heat theV oven 4f. rThe iiu'es or-*chambers 6, vai'idi'Sv present a heating surface which insures the uniform heating of the oven walls, and is substantially that construction to be found in stoves or ranges in general use, except that the bottom wall 9 of the oven has been lowered so as to bring the surface of the supplemental oven bottom 11 on the same plane with the surface of the oven door 12 when it is in the open position, shown in Fig. 3.

The supplemental oven bottom 11 is adapted to be removed from the oven, being supported on flanges 13 extending inwardly from the lower edge of linings 1a located at either side of the oven L1. These linings 1% are spaced inwardly from the side walls of the oven to provide fines or chambers 15, and in height extend only part way up in the oven, see Fig. Q, and the lower edges of said linings are raised above the bottom 9 of the oven to provide communication between the lues or chambers 15 and a flue or chamber 16 provided between the supplemental bottoni 11 and the bottom 9. The linings le have a front wall 17 to close the front of the flue or chamber 15, and in the lower end of said front wall 17 an opening 18 is provided, for a purpose to be explained; said linings 14E are further provided with laterally extended lugs 19 serving as a support for a shelf or plate 20, and slotted openings 21 in said linings serve a purpose to be explained.

22 designates a burner, including the main pipe 23 disposed along the lower portion of the rear wall of the oven, and the right angle pipe extensions 24; disposed along the lower portion of the side walls of the oven. The extensions 2li of the burner represent the active portions of the burner, and are provided with openings 25 in their upper walls, from which a gas-flame may issue in a vertical direction in the flues or chambers 15, and 26 are openings similar to the openings 25 and are for the same purpose, except the openings 2G are disposed diagonally in the burner, preferably in the lower portions thereof so that the gas flame will issue in the direction of the lue or chamber 16 beneath the supplemental oven bottom 11. The transverse hollow member 23 which connects the two burner extensions 241 thus kserves as' means for equalizing the flow of gas or evenly distributing the liow to the burner extensions. Leading into the rear of the stove or range and connected to the main burner pipe 22 is a supply pipe 27, leading to a suitable source of supply. To provide for a proper mixture of oxygen and gas, in the oven, I provide lines 28 along the lower portions of the side walls of the oven which open out of the rear wall of the stove or range as at 28a, and in the side walls of the stove or range, at or near the top of the pipes y52,4 of the burner and at or near the edge of said lining is spaced slightly above the pipe 9.2 of the burner to provide an opening 32 through which the products of combustion may escape from the oven into the flue 5. Such escape is through an opening 33 in the rear wall of the stove or range, into the flue. The opening 33 is controlled,

`prefenibly by a slide valve 34. This valve has an arm 35 having a series of openings 36, by means of which an adjustable connection may be made between said arm and a. link 37, by a bolt 38. The opposite end of thev link has a pivotal connection with a crank arm 39 connected with a rod or stem 4l() disposed on the rear side of the stove or range, and its lower end connected with a valve l11 arranged in the supply pipe :27. On the upper end of the rod or stem 40 is an operators handle or lever 112 for operating said rod or stem 10. The connections between the rod or stem 40 and the valve 3e, and the rod or stein a() and said valve 41 are such that when the valve L11 is opened to permit the gas to flow from its source of supply to the burner, the valve 34k is opened, and when the valve 4-1 is closed, the valve 31 will be simultaneously closed. To increase or decrease the draft through the flue 5 it is only necessary to change the point of con .nection between the linlr 37 and the arm 35 of the valve, whereby it may be moved more or less, as desired, when the rod or stem 40 is operated.

T o insure the products of combustion from the burner passing to the center of the oven and uniformly baking whatever may be in the oven, l perforate only the central portion of the supplemental oven bottom 11, seeV Fig. 1, by providing the perforations 43. YVith this provision the products of combustion below the supplemental oven bottom cannot rise until at or near the center of the oven, insuring a uniform radiation of the heat, as will become more fully apparent.

I have described the travel of the products of combustion from a -solid fuel in the lire box 2 and its escape into the ue 5. It is obvious from the foregoing description of parts that solid fuel or gas may be used to heat the oven, and used independently of each other, or at the same time, as may be desired.

I will now describe the travel of the products of combustion fromthe burner 22, when gas is used, through the oven into the flue 5.

The stem 40 is operated to release the gas to the burner 22, and at the same time the valve 34 is moved to open the eXit 33 through which the products of combustion will escape into the flue 5, and the opening of which will provide the necessary draft to draw the products of combustion from the oven. Upon turning on the gas, a lighted match inserted into the openings 18 of the linings 14 will cause the gas escaping through the openings 25 and 26 in the pipe sections 24 of the burner to become ignited, a proper combustion taking place, by the admission of the required amount of air taken into the flues 28 and admitted to the burner chambers through the openings 29 communicating with the ues 28. The products of combustion from the iame at the openings 26 in the burner will traverse the flue or chamber 16 beneath the supplemental oven bottom 11 until the openings 43 located centrally thereof are reached when the Same will ascend through such openings. The products of combustion from the flame at the openings 25 in the upper wall of the burner sections 24 will rise in the flue or chambers 15, part passing into the oven proper through the openings 21 in the linings 14 and the remainder passing up over the upper edge of said linings 14, into the oven proper. The exit for the products of combustion being through the opening 32 below the lower edge of the rear lining 30 the products of combustion passing over the linings 14 and through the openings 21 therein, will necessarily descend passing through the opening 32 and up behind said rear lining 30 and out through the iue 5, the opening of the valve 34 creating the necessary draft for the ow of the products of combustion from its source to its eXit. It is understood the shelf or plate 20 is perforated or slotted to permit the products of combustion to pass therethrough.

From the foregoing it is obvious that I have designed a range or stove capable of being heated either by solid fuel or gas and which by the peculiar arrangement of flues or chambers may heat the oven uniformly when using either, and that with the use of solid fuel or gas it is not necessary to remove or replace any parts of the structure. By connecting the valve 34 and the valve 41 with a common operating means, the valve 34 is always closed when the gas is turned ed, and is always open when the gas is turned on. I show no valves controlling the ingress of air into the flues 28, but such may be used if desired. This is a common expedient in stoves of this character and so forms no part of the present invention.

l/Vhat I claim is l. In a gas stove, an oven, a flue, communicating .with the oven at a point near the top thereof, a partition wall spaced a short distance from the rear wall of the oven eX- tending from the top thereof to a point near the bottom of the oven, vertical walls spaced from the side walls and arranged at the bottom to form an air circulating way and provided with slots in the main body thereof, a horizontally disposed partition wall spaced between the side partitions andy provided with perforations through the body thereof, a hollow member at the rear of the oven, gas burners communicating with said hollow member disposed within the space between the side partitions and the side walls of the oven and in the lower portions of said space, a gas inlet member communicating with the hollow member, means for controlling the inflow of gas, a damper for control- ,ling the outlet to the iue, a common control means for the gas infiow and for the damper, plate members secured to the outer side walls of the oven, the same being formed to provide an air inlet way between said members and the side walls of the oven, said partitions being arranged in parallel relation and substantially in the same plane with the burner members and the side walls of the oven having plural perforations providing communication from the space between said plate members to the space between the side partition members and the side walls of the oven.

2. In a st ove, in combination, an oven, an exhaust flue having communication therewith, a pair of heating units spaced apart substantially the ywidth of the oven, gas supply means including means for equalizing the flow of gas to the respective units, means for regulating air circulation within the oven including a wall spaced from the rear wall of the oven and extending from its top near to the bottom thereof, a horizontal partition, and side partitions the latter spaced from the side walls suiiiciently to house the heating units and meeting the edges of the horizontal partition, said side partitions arranged to aord communications between the side spaces and both the upper part of the oven and points below the horizontal partition. y

LEE R. MOTI-IERVVELL.l

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