US1875545A

US1875545A - Stove

Info

Publication number: US1875545A
Authority: US
Publication date: 1932-09-06
Anticipated expiration: 1949-09-06

Description

Sept. 6, 1932. A ANDERSON 1,875,545

STOVE Filed Jan. 28, 1929 3 Sheets-Sheet l 3 (g I INVENTOR.

, Wm 22/ W aw $3M mm W ATTORNEY Sept. 6, 1932. A. E. ANDERSON STOVE Filed Jan. 28. 1929 5 Sheets-Sheet 2 INVENTOR.

116A ATTORNEY Sept. 6, 1932. A. E. ANDERSON STOVE Filed Jan. 28, 1929 5 Sheets-Sheet 3 IN V EN TOR.

111'4 ATTORNEY Patented Sept. 6, 1932 UNITED STATES ALBERT E. ANDERSON, OF GRANDVIEW, MISSOURI.

s'rovn Application filed J'anuary 28, 1929. Serial No. 335,503.

7 My invention provides further novel means by which the draft may be automatically regulated to preserve a minimum of variation in temperature. I

My invention also provides in a stove having a magazine and a grate therebelow, novel means by'which the, lower end of the magazine may be closed while the contents on the grate are being dumped My invention provides further novel bafiiing means by which the rapid escape of the heated products of combustion may be prevented. a

My invention provides further novel means by which the burning fuel is retained in a form in wh ch it will have a maximum of radiating effect.

My invention provides still further novel means for supporting the hover hood.

My invention provides. ,further a stove which is simple, cheap, durable, not likely to get, out of order, and which is easily and.

cheaply operated. a

The novel features of my invention are hereinafter fully described "and claimed.

In the accompanying drawings, which illustrate the preferred embodiment of my invention,

Fig. 1 is a central vertical sectional view of my improved stove.

Fig. 2 is a side elevation of the same.

Fig. 3 is another side elevation of the stove.

Fig. 4 is an enlarged fragmental verticalpartly broken away and parts removed, show mg a portion of the grate and supporting base.

Fig. 6 is a section, enlarged, on the line ianralaT omen 66 of Fig. 1, the hover hood and some parts below being omitted; V

Fig. 7 is an enlarged section on the line 7 7 of Fig. 1, parts being brokenawayl Fig. 8 is an enlarged top view of the stove,

part of the hover hoodbeing broken away.

' Fig. 9 is an enlarged section on the line 9-9 of Fig. 8. a

Fig-1O is an enlarged fragmental vertical sectional view showing a portion of the base,

part of the grate, and a part of the fire pot. Similar reference characters designate similar parts in the different views. y

The body of the stove is provided with a base 1 having on top a horizontal annular seat 2 provided withacorrugatedinner edge 3, Figs.5and7.

The body also has an upwardly tapering I fire pot 4' having upward extending-corrugations 5 registering with the corrugated inner edge of the seat2. I a i The top part of the body rests on the upper end of the fire pot 4 and forms a combustion chamber 6 into which the fire pot discharges. The combustionchamber 6 has a horizontal baffle portion or member 7, which for the mostof its periphery is spaced'from the side walls of said chamber, so as to form a passage 7 for gaseous products of combustion.

The top of the combustion chamber 6 and the baflle member 7 are respectively provided with holes which register with each otherand through which extends an upwardly :remov-' able and vertically adjustable magazine 8, having a removable cover 9, and which extends centrally into the fire pot 4. On inwardly extending lugslO of the base 1 revolubly rests a grate 11, the periphery of which is encircled by the corrugated edge 3, and with which edge the grate forms vertical air passages 12, Figs. 5 and 7. The air passages 12 register and communicate with the inner channels of the corrugations 5 of the fire pot 4, so that air can pass upwardly from the ash chamber 13 of the base 1 between the periphery of the grate 11 and the corrugated edge 3, and. thence upwardly in the inner channels of the corrugated fire pot 4.

The grate 1.1 has a central downwardly converging hole. 14 which is adapted to have ameter of the lower end of the magazine 8,-

so that, when it is desired to dump ashes from the central portion of the grate 11, the deflector 15, when lifted, will uncover the central hole 14 of the grate, and will close the lower end of the magazine 8 and prevent coal or other fuel therein from passing from the magazine.

The magazine 8 and the deflector 15 are removable through the holes in the baflie memher 7 and in the top of the combustion chamber 6, through which the magazine normally extends The outer wall of the magazine 8 has lugs 18 supporting the magazine on the top of the combustion chamber 6.

I The combustion chamber 6 is provided with an outlet 19 through which pass the gaseous products of combustion, and into which discharges the upper end of an air conductor 20, the lower end of which is provided with an elbow 21, the lower end of which is in close proximity to and registers with an air inlet 22, with which the adjacent side of the base 1 is provided. V V For facilitating the. automatic discharge of soot or ashes which may collect in the con ductor at the bottom of the elbow 21, said bottom is inclined, on its upper side, downwardly toward the lower open end of the elbow, Figs. 1 and4.

Air for combustion enters the ash chamber 13 of the base through the air inlet 22, and passes thence upwardly through the openings in the grate 11, which are at the outer side of the imperforate deflector 15, and through theair passages 12, at the outer side of the periphery of the grate 11 into the fire pot 4. The inner channels of the corrugated fire pot, which is upwardly converging, cornmunicating with the passages 12, and the presence of the imperforate deflector in the centralportion of the fire pot, cause the most of the combustion, which takes place in the fire pot, to be adjacent to the walls of the fire pot, thereby highly heating such walls, and economically and efiiciently heating the external air adjacent to the fire pot. As the coverv 9 of the magazine 8 is imperforate, and the imperforate deflector 15 is adjacent to and directly under the magazine, the fuel in the magazine isnot ignited therein, and the principal combustion takes place at the outer side of the zone between the deflector 15 and the lower end of the magazine 8.

The gaseous products of combustion pass from the fire pot 4 around the periphery of the,

baffle member 7 and out of the combustion chamber 6 through the outlet 19 thereof.

For automatically regulating combustion in the stove, I provide means controlled by the changes in the external temperature, which, as shown, comprises a thin vertically disposed disk 23 located between and adapted to close alternately the air inlet 22 and the air inlet at the lower end of the elbow 21. The disk 23 has extending centrally through it a horizontal rod 24 slidably mounted in the wall of the elbow 21. Two nuts 25 adjustably mounted on the rod 24 clamp against opposite sides respectively of the disk 23. Said rod 24 constitutes the stem of the disk valve 23. By adjusting the nuts 25 and disk 23 on the rod 24, the position of the disk with respect to the adjacent air inlets may be changed. By disposing the thin disk 23 edge up, as shown, it will be kept free from deposits of soot, dirt or ashes. By mounting it longitudinally adjustable on the horizontal rod 24, as described, its nearness to either of the adjacent air inlets which it is designed to close mav be determined as desire For normally forcing the rod 24 to the left, Fig. 4, to close the lower end of the elbow 21, to prevent cold air passing through the conductor 20 into the combustion chamber 6 and out of the outlet 19, and to permit air to enter the inlet 22, to increase combustion, a coil spring 26 encircles the rod 24 and has one end bearing against the outer side of the el bow 21, its other end bearing against a washer 27 mounted on the rod 24, saidwasher bearing against a pin 28 extending through the rod 24.

To reduce or entirely shut off the air from entering the air inlet 22, when the external temperature reaches a predetermined degree, there is provided a thermostat, which on being heated, expands and, by bearing against the outer end of the rod 24, forces-the latter inwardly so as to move the disk toward or against the outer end of the tubular portion 29, which forms the air inlet22.

The thermostat shown comprises four

expansible units

30, 31, 32 and 33 connected in tandem, each containing air, and each having two expansible corrugated side members connected at their peripheries, as in similar types of such units, which are well known.

Two

short tubes

34 and 35 respectively connect adjacent side members of the

units

30 and 31 and 32 and 33, so that these two sets of units have the units of each set interiorly communicating with each other. The outer end of the rod 24 has a reduced portion 38 extending into'a recess in one end of a block 3'? fastened to the right side member of the unit 33. A similar block 38 is fastened to the right side member 31, Fig. 4, and has extending into its end recess a projection 39 on the adjacent end of a block 40, the other end of which is fastened to the left side member of the unit 32. A block 41 is fastened at one end to the left member of the unit 30, and has at its other end a cylindrical projection 42, which is rotatably fitted in a central hole in the right end of a thumb. screw &8, which is rotatably fitted in a threaded hole in one arm of a yoke ri, the other arm of which is fastened to the elbow 21.

hen the units are heated, they will expand, and will force the rod 24 to the right, Fig. 4, thereby moving the disk 23 toward he tubular portion 29, so as to close the air inlet 22, if the temperature is great enough to suiiiciently expand the units to effect this function. By adjusting the screw t3, the temperature which the valve will close the inlet 22 may be predetermined. In expanding the thermostat will compress the spring 26, which, as the units collapse, will move the rod 24; so as to move the dislr 23 toward the el how 21.

The thermostat and the spring 26 will thus control the passage of air alternately into the ash chamber through the inlet 22 and through the conductor 20, as the external temperature falls and rises,thereby controlling the heating of the external air, so as to retain the temperature within a predetermined range.

A flarin g hover hood, comprising two semi circular members and 46 hinged to each other at their upper ends, encircles the upper portion of the combustion chamber 6, said members being provided respectively at their upper ends with two half rings l7 and 48, the ends of which are respectively pivoted to each other by pivot pins 49 which are disposed respectively in two recesses in the upper ends respectively of two upstanding posts 50 on the top of the combustion chamber top.

The said posts hold the hover hood from revolving.

There is provided supporting means for the hover hood by which the latter is supported independently of the stove body. Such supporting means, as shown, comprises two semi-circular members 51 adaptedto rest on the floor and to encircle the base 1. Each member 51 has at its respective ends twoupwardly extending arms 52, which are fas tened to the adjacent hood member at diametrically opposite sides thereof. Figs. 1, 2 and 3. Each of the hood members may be swung upwardly, as shown in dotted lines in Fig. 2. Thus, if it is desired to have easy access to the ash pit door 53, the adjacent hood may be swung upwardly to permit such easy access, or for any other desired purpose.

When it is desired to remove ashes or clinkers, the cover of the magazine 8 is removed and the stem 1'? is lifted so as to lift the deflector from the grade 11 and against the 11115 derside of the magazine, thus closing the lower end of the latter to retain the coal therein.

If desired, the deflector may be employed to lift the magazine 8 entirely out of the combustion chamber 6. Inthe use of softicoal, as a fuel, the magazine 8 may be filled, the lid 9 placed thereon, and the magazine then vertically adj ustedupwardly about six inches or-so. The coal will spread at the bottomof the magazine, thus increasingthe coal ca} pacity approximately twenty percent.

The magazine 8 is reversibleias wellas vertically adjustable and removable. With the use of semi-hard coal'the magazine 8 maybe inserted .into the combustion chamber in a position the reverse to that shownin Fig. 1.

It will be noted that the lugs 18, asshown in Fig. 1," are nearer the top than the bottom of the magazine, so that when reversed, the

magazine. will extend to a greater extent from the combustion chamber,thus increasing the coal capacity. 7 I

The deflector in addition to its function of deflecting the unburnt coal outwardly from the center of the fire bowl, also effects the function of preventing air entering through. the central portion of the grate. It also performs the additional functions of closing the lower end of the magazine when ashes are to may be-disposed under one member ofthe hover hood, 46, and supportthe latter in the raised position, shown, indotted lines. Chicks may, and will be inclined to, mount. the roost so disposed that heat will be thrown from the hover member onto the roost.

I do not limit my invention to the structure shown and described, as many modificae tions,. within the scope of the appended claims, may be made without departing from the spiritof my invention.

What I claim is p 1. In a stove, a grate, a magazine above and spaced from the grate, and an imperforate upwardly converging deflector adapted to rest on and close the central portion of said grate and movable upwardly to a position in which it will close the lower end 0 said magazine.

2. In a stove, a grate, a. vertically adjustable magazine above and spaced from said grate, and an upwardly converging deflector adapted to rest on said grate and movable 11pwardly to aposi-tion in which it will close the lower end of said magazine.

3. In a stove, a grate, a. vertically adjustable ma-gazine above said grate, and an up wardly converging deflector adapted to rest onsaid grate and to be moved therefrom to Q be dumped and that of lifting th 1;,

a position in which it will close the lower end of said magazine, and adapted toliftand be removed with said magazine.

4. In a stove, a grate having a central hole, a magazine above said grate, and an upward- 1y converging imperforate deflector adapted to rest on said grate and to close said hole and to be lifted to a position closing the lower end of said magazine.

5. In a stove, a grate having a central hole,

.a vertically adjustable magazine above said grate, and an upwardly converging imperiorate deflector adapted to rest on said grate ,and close said hole and to be lifted so as to ,close the lower end of said magazine and to lift the latter and removable therewith.

; 6. In a stove, a combustion chamber having a top opening, and a cylindrical magazine freely removable and reversible end for i end slidable in said opening and having pe ripheral means of support adapted torest on said combustion chamber top and disposed nearer to one end of the magazine than to the other end thereof.

7. In a stove, a grate, a-magazine above and spaced from said grate, a fire pot which has its outer side exposed to the open atmosphere and which converges upwardly from Said grate, and a. central u 7 wardly converging deflector resting on saic grate in said fire pot and movable upwardly to a position in which it will close the lower end of said magazine. e 8. In a stove, an ash chamber having an air inlet at one side, a combustion chamber having an outlet, an air conductor discharging into said outlet and having an air inlet registering with and spaced from the first v named air inlet, a longitudinallymovable horizontal rod alined with said inlets, and a valve disposed edge up between said inlets and adjustable longitudinally on said rod toward and from said inlets and movable by W said rod to positions in which it will alternately close said inlets.

In testimony whereof I have signed my name to this specificationj ALBERT E. ANDERSON.