US602372A

US602372A - Furnace

Info

Publication number: US602372A
Authority: US
Publication date: 1898-04-12
Anticipated expiration: 1915-04-12

Description

(No Model.)

E.E.STARRQ FURNAGE.

ffy-

3 Sheets-Sheet 1.

Patented Apr. 12, 1898.

IN VE /V T05 (No Model.) v 3 Sheets-Shet 3,- E. E. STARR.

PURNACE.

No. 602,372. PatentedApr. 12,1898.`

/NVENTOH A 770/?NE Y S.

UNITED STATES PATENT Ormes.

EMORYE. STARR, OF BOWLING GREEN, OHIO.

FURNACE.

SPECIFICATIONforInig part of lLetters Patent No. 602,372, dated April 12, 1898. i v Application filed June 12,1897.y Serial N0. 640,489. (No model.) Y

To all whom, it may concern.'

Be it known that I, EMORY E. STARR, of Bowling Green, in the county of Wood and State of Ohio, have invented a new and useful Improvement in Furnaces, of which the following is a full, clear, and exact description.

The objects of the invention are to provide a furnace especially adapted for heating dwellings or similar places, and to so simplify the construction of the furnace that it can be made at a minimum of cost and to so construct and assemble the various parts of the furnace that the air intended to be conveyed to the rooms cannot by any possibility be brought in contact with the products of combustion and whereby the products of combus-` tion are utilized to the greatest possible eX- tent and all the heating-surface of the fur-` nace will be brought into more or less direct contact with the air that is to be supplied toV f subfiues B and B.

the rooms or apartments.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter yfully set forth, and pointed out in the claims.

Reference is to be had tothe accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a perspective view of the improved furnace. Fig. 2 is a plan view of the same. Fig. 3 is a vertical section taken practically on the line 3 3 of Fig.r 4. Fig. 4 is a vertical section taken on the line 4 4 of Fig. 3. Fig. 5 is a horizontal section on the line 5 5 of Fig. 4, and Fig. 6 isa horizontal section on the line 6 6 of Fig. 4.

The re-pot A of the furnace is providedV with fire-plates 10a, which are removablyv placed at each side of said fire-pot to extend the lifetime of the latter, and near the upper portion at one side a throat-ring or box eX- tension 11 is formed, which carries a fire-door.

12 of any approved construction. At the same side or front of the fire-pot at the bottom a second outwardly-extending throatring or box extension 13 is provided, the major portion whereof is laid below the grate 14 of the iire-pot, and the box extension 13 is in direct communication with the ash-pit and is normally closed atits outer end bya door 15.

side iiues 20 are formed, which extend to the top of the fire-pot and are there closed by horizontal partitions 23. (Illustrated at the left in Fig. 3.) Each iiue 20 is divided into two sections and form independent subiiues B and B', the divisionsbeing made through the medium of vertical partitions, (shown in Figs. 3 and 4,) and a corresponding partition 2la is located in the bottom iiue 18, dividing it into two subiues, connecting one with each of the (Shown also in Figs. 3 and 4.) VThe subflues B and B are smoke or combustion iiues, and each is provided at the top with an outlet 24; but the outlet of the flue B is diagonally opposite the outlet of the iiue B and a single outlet only is provided for each complete flue. These outlets 24 connectwith pipes or flues 25, located above the `lire-pot, and the said iues or pipes 25 are brought together centrally over the fire-pot, being connected with the upper portion of the latter by a collar or sleeve 27, in which a damper 28 is pivoted, capable of closing the interior of the sleeve or collar and of opening direct communication between the fire-pot and the iiues 25 where they meet.

. The damper 28 is preferably operated aun tomatically, being attached to a rod 29, which isl carried out to the front of the furnace, terminating in a crank 30, as shown in Fig. 1,

and when the fire-door 12 is closed the crank 4 rests upon the top of the door and holds the damp'er 28 in such position as to prevent the products of combustion passing up directly from the fire-pot to the flues 25; but the moment that the fire-door is opened the crank 30 or the damper-handle will gravitate downward and the damper will be opened, establishing a direct communication between the direct draft in the interior of the fire-pot and the oiftake 32 for the smoke, which pipe connects Under this arrangement two vertical- IOO with the two upper branch flues 25 immediately over the point where the damper 28 is placed, as shown in Fig. 4. The air is conducted to the fire through the pipe 33, which connects with a box 34, the box being located at or near the base of the furnace at its front side, and the ash-pit door 15 will open into the said box. The box 34 is provided with a door 35, and when this latter door is opened the ash-pit door may be opened out, so as to remove ashes from the furnace. In order that the ashes may be removed wit-hout dropping into the bottom of the box, a partition 34a is provided on a level with the bottom of the ash-pit, having upwardly-flared sides to form a space 34b between said sides and the box.

The subi'lues B and B' are connected through the divisions of the bottom flue 18. The ilue B is provided with an opening 36 at its top, which is in direct communication with the fire-pot A, as shown in Figs. 3 and 4, and at the opposite side of the fire-pot a similar communication (not shown) is provided between the subflue B' and the fire-pot. The soot or other collected material may be readily cleaned from the bottom of the iiue 18 by means of pipes 38, that extend outwardly from collars 39, which are built in the end portions of the bottom flue 18, as shown particularly in Figs. 3 and 4, the said pipes being closed by removable covers 40. The gratebars 14 are separate and independently pivoted, and the majority of the bars are provided with downwardly-extending arms 14a. The arms 14 are loosely entered into the plate 14, secured to the shifting-rod 37, which extends beyond the front of the furnace. The rocking motion that is given to the gratebars under this arrangement imparts a better life to the re than either a shaking or a revolving grate.

In operation the fire-door being closed the air will enter the box 34, pass up through the openings 34b and through the ash-pit door when open or through the slides therein into the ash-pit, up through the bed of coals into the upper portion of the re-pot, and out from the iirepot through the openings 36 at the top. The waste products of combustion thus discharged enter the subfiues B and B', pass through the said flues downward to the bottom of the fire-pot proper at one side of the fire-pot, and through the connecting-flues 18 to the opposite side of the fire-pot, where the said products of combustion pass out from the llues B and B' through the openings 24, the products of combustion being conducted to the offtake-pipe 22 by the upper branchpipe iiues 25. When, however, the fire-door is opened to view the lire or to add coal thereto, the damper 28, under the arrangement shown, will be opened and the gases and other products of combustion will pass directly from the re-pot into the offtake-flue, preienting any possibility of any of the gases "'acking out through the open lire-door.

A base 41 is provided for the furnace, which may be and usually is of sheet-iron, and between the base 41 and the bottom 17 of the outer casing for the fire-pot a horizontal partition 43 is located, having an opening 44 therein preferably at its center. Between the base 41 and the partition 43 a chamber or a flue C is formed, and between the said partition 43 and the bottom 17 of the outer casing of the fire-pot a second Iiue D is produced, as shown in Figs. 3 and 4. The flue C is of greater length than the flue D, and the flue D is in communication with an upright flue D', formed at each side of the outer casing of the fire-pot mainly by placing box-fines E at each side of the furnace, the box-fines communicating at their lower ends with the horizontal flue C.

The fire-pot and the spaced outer wall 19 thereof, forming its outer casing, are preferably made of cast metal and may be cast in one piece, and are supported upon the base 41 by legs or divided bars 45 and 4G, passed downward through the partition 43. These divided bars or legs form practically the front and rear walls for the ilues C and D. The ilues C, D, D', and E are arranged to conduct the air which is to be heated and supplied to an apartment, while the ilues 18, B, and B', as stated, are intended to receive and conduct off the products of combustion.

The box-fines E, adapted to receive the air to be heated, together with the base 41 and partition 43, the front sheet-iron partition 52 of the furnace, and the rear sheet-iron partition 53 practically constitute the jacket for the furnace. Both the front and the rear sheet-iron partitions 52 and 53 extend to the base of the furnace, and the rear outer wall or partition 53 is carried upward to an engagement with the offtake-ue 32 for the smoke, having secured thereto a horizontal air-inlet iiue 47, which is at the rear of the furnace and is provided with branches 48, extending along the sides of the furnace and communicating with the box-fines E. Air is admitted to the back iiue 47 through the opening 49 made in its center, while a dome 50 forms the upper portion of the jacket of the furnace, the said dome being provided with the usual collars 51, with which the heaterpipes are connected. The air to be heated is drawn in through the opening 40 and conducted by the back flue 47 and branch flues 48 to the side box-fines E. The air then enters the lower or base ue C, then the next upper flue D, and passes up through the vertical connecting-iiues D' to the dome and thence to the supply-pipes of the house or building. Thus it will be observed that the air to be heated is passed entirely around the cast portion of the furnace, or that portion which is provided to absorb and radiate the heat, and finds an exit from the furnace in a highly-heated condition. The direction in which the products of combustion travel is indicated by heavily-drawn arrows, while IOO IOS

IIO

lightly-drawn arrows indicate the path of the air to be heated.

In order to prevent the rear wall or partition 53 being affected by the heat, as such partition or wall is quite close to the re-pot, a guard-plate 54 is provided, located between said wall or partition and the tire-pot, as shown in Fig. et. The cleaning-tubes 38 are passed through the boX-fiues E and cross the upright ues D for the heated air.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. In a furnace, the combination ,with a firepot, and an air-supply for the iire connected with the said fire-pot near the bottom, of a casing surrounding the fire-pot, forming vertical and horizontal combustion-conducting lines, each vertical flue having direct communication with the fire-pot near its upper portion, and each combustion-Hue being provided with an outlet, exit-lines connected with the outlets of the combustion-fines, the exit-dues having a branch connected with the upper portion of the fire-pot, an offtake-lue connected with the exit-dues, and a damper located in the branch of the exit-lines between the said fines and the iire-pot, substantially as described.

2. In a furnace, the combination,with a lirelright fines being provided with direct communication at their upper portions with thev nre-pot, and being also provided at their tops with outlets, and a partition dividing the said upright and horizontal ilues into two separate compartments, of a main outlet for the products of combustion, branch pipes connected with the said main outlet and with the outlets of the vertical sections of the combustion-nues at the sides of the fire-pot, a connection between the branch pipes and the interior of the tire-pot at the top, a dome above the nre-pot, a flue for the air to be heated surrounding the fire-pot and its casing, and a fresh-air inlet connecting with the bottom portion of theair-heating lues, substantially as described. i

3. In a furnace, the combination,with a firepot, an air-supply for the fire-pot, lire-plates removably attached to the fire-pot, combustion-fines at the sides of the lire-pot, being in communication therewith, an offtake for the products of combustion, branch pipes from the offtake connected with the said combustion-lues, and a branch connection between the branch pipes and the nre-pot, of a casing surrounding the lire-pot, provided with outer box air-inlet lines, inner lues located between the boX-lues and the lire-pot, also adapted to conduct air to be heated, bottom air-fines in connection with each other, one bottom flue being connected with the box-lines and the other with the inner air-dues, a dome located over the lire-box, receiving the heated airA