US1132373A - Furnace. - Google Patents

Description

F. 0. MOLL.

FURNACE.

' APPLICATION FILED MAR. 14, 19131 1,132,373. Patented Mar.16,1915.

3 SHEETS-SHEET 1 WITNESsES I IV [/5 N T0 ATTORNEYS F. 0. MOLL.

FURNACE.

APPLICATION FILED MAR. H, 1913 Patented Mar. 16, 1915.

1,1 3 snnms sanm 2 W/T/VESSES' /NVENTOR Fran/c 0. Mo//.

$627427 W m ATTORNEYS F. 0. MOLL.

FURNACE.

APPLIOATION FILED LLAR.14, 1913,

Patented Mar. 16, 1915.

3 $HEETSSHEBT 3.

2 mm 4\\ 1 & S J iwmw EM q W i w 1 I i H i M M f F J m 2 i 1 fl a fl f i m h; 1; g on N. on S INVENTUR Frank 0 Mol/ ATTORNEYS WITNESSES FRANK OTTO MOLL, OF PORTLAND, OREGGN.

"FURNACE,

Specification of Letters Patent.

Patented Mar. 16, 1915.

Application filfid March 14, 1913. Serial No. 754,210.

To all whom it may tom-cm llo it known that I. FRANK. (l. M01111, a citizen of the United F t-ates, and a rcsirlout at Portland, in the county of Mnllnomuh :nul State of Oregon, have inventor! a new ul'itl lnipmrod l urnncv. if whivh the fol loving is a full, (*lflll, and oxnct ilescrip tin-n.

My invention relates to furnaces of the warm-air" type. and the object thvrvof is to prmiuuc a hunter of this nature \a'hiih will lie \erj ollioient and economical in any tiou. ensilv cliinllutl, proof ilgfzi'imt hank-age tl'irougfh in; Walls of (he LIN-H951 gj 'lltlzltll. uiul s (roustruotP l that the part:

vr-rl l inrilur of my furnuce pit-lm'ulily :xl' thin :nrta uu-in row son of such construction tlu iluv till/S haw a shortor lilo than a huurivr metal constr-u-otinin l support the same in plan) by ion-ans, facilitating their rumovul :nnl ltr nonnl as often as required.

A further ohjm-t of my invention in to prolimo a furnace or heater (it the type lilttiltlflflflli which will readily I'm (to heat. (Gr l 1? m Vi:jizll$1ti '3l little fun! in opera til 11 213ml h i'izipulwlt oi using: a lower irznlo ol' l'uvl thy, ii mlly roi'piiroil for siinilsir liar-nu no on tlunuirlcot.

l w it hail to tluinwmupnnylug ihnwiizgri'nuiiu" u part of this spent iimiliwix in whirl: 1hr HUXA ohurnrturr; oi rotvri-nw lul :wln fr" Fllllll? park in ill tho Vim.

llfijili't l i :1 \wticnl l ngitudinal am:-

iii-M on tho lino 3 of Fig. i; Fig". lis a horizontal sopflioius] \iuv; on tho lino l i oi l i 1: Fig. 5 is :1 horizontal wt't-ltiwtlttl aiz-w on the lino 5 5 of Fig. '1; Hg. 0 is n :mriionul iimv on tho line (3' U of Fig: l. and Fig. 7 @411 d all howinp' how the mills of 1hrlwutins pip are l ttfllittl to the plate liwn in hip.

l iopro ll lit-M01 compriws an oute ('H lug tho $1. -7 whivl: ur ho\\'u :il l {up if zuul ro-ling: upon 21 him.

ing tuho iii-ranged in two horizontal layers. null in opvidtioli tho hot gases of cornlmmtion float pass; through the upper layer Hiltl thou rlzrn'n through the lowor layer 1wl ro the) roach thiglluc and pass out. The nir to F honlvrl pauses into tho (using through an opening I whi l) is; shown as lJQ'" lug; l lltll kl it the mug and tho min-so taken by this air is arch that it comes into contact hoth with tho lirwiio 11ml the hunting tulma (f= holoro it can post; out through the fluw whirl) lrwul fr m the top of the outer musing: of tho tumors t tho apartments to ho huntci'l.

Tho fin; m); if course mulls of metal and it ii linwl with llrilruzl or any other suitniilu rllv -tor u'uitrrizll shims; at 59. 'lhrougz h its 'ront it hm; no open whiuh is; ((HillWfil'tl in oi an annular we l to an r liiillfi thr 'iugh tho {rout of tlu: outir cu, luxl'urnncw than, is normally cloexci'l 1L :in-rl thi front of tho will l is lioltiwl both to tho and to the lire-l ox 4, understood, suitable this purpono. /r-lo tho lining 9 lli21ll\\ tho top of the A? :nhpit min ho had i T, which is cloned h iloor ll liolow tho !l(ml' ll. l l'jv uminant :1 v i-l1 th t tho lirenli h huh" il F5 Wm ill opouiir uiu urslooil. 'lm'metl liy ll'ilflll? of :in iuvliiml pr'to .15, and nni r haw :iu oprning the lmsu 0 ll) tlierotlirougli directly liv ow the ilhllpli, as shown in Fi l.

The fire-box 4 has an outlet opening through the back nomthe top, and around this outlvt o 'ioning is secured :1 cast iron col lur II. This collar abuts against the outer 1 ml of unolhor cast iron collar 18 Secured :u-ouiul an inlet opening to :1 radiator 19 which is located ndjucont the hack of the analog 1 and supported upon standards 20. This radiator 19 prefmzibly made of steel plutw. and tho gruscs -of combustion pass through tho radiator on their Way to the heating tubes 6.

At the top 01 the casing 19 are suitable openings shown as three. in number located in the front wall and are surroruuled by uumns of (mi iron collarsv ll luwing flanges:

which are bolted to the front of the radiator, these collars receiving the rear ends of the heating tubes (3. These collars are preferahly tapering in form and receive the ends of the tubes 6 which tit tightly around the same. The upper layer of heating tubes therefore is composed of three tubes and the front ends thereof are supported by means of a plate 22 which has a flange forming a foot 24 resting upon the top of the lire-box 4 and having its upper edge secured to a transverse flange 23 on the lower side of the top 2. A transverse horizontal plate may be employed to extend from one side of the casing to the other in the front of the plate 22 at the bottom thereof, resting upon the foot 24 and upon a corresponding rib 26 formed on the inner face of the front of the casing, and this plate. together with the plate 22, will form a closed chamber into which access cannot be had from the lower part of the casing 1.. In consequence the hot gases passing into the radiator 19 and through the upper layer of tubes 6 cannot pass out through the bottom of the chamber formed by the plates 22 and 25 and portions of the top and front of the casing, nor can any air entering the casing through the opening 7 pass into the chamber from below.

be lower layer of heating tubes 6 is shown as consisting of two tubes. and these tubes are likewise supported at their inner ends by having the said inner ends -iippcd over collars 21 secured to the front wall ol the radiator below the firstanention d col lars 21. The lower tubes are staggered with respect to the upper tubes and their front ends are supported by the plate in the same manner. this plate having apertures through which the front ends project a slight distance.

The wall forn'iing the web or is connected to the front wall of the radiator 19 by means of rods 27. and in order to make a perfectly tight fit between the front ends of the tubes 6 and the apertures in the plate 22 receiving them, I employ conical rings 28. The tubes 6 may be of steel. or sheet iron and the collars 28 of malleable iron heavy enough to retain their shapes and be capable of being ground to a true circle so that they will fit the tubes. On account of their conical shape they press the material forming the front ends of the tubes 6 into tight contact with the edge of the openings in the plate 22 and form a perfectly leak-proof joint. A swinging door may be formed in the front of the casing near the top, this door being shown at 29. to give access to the front of the tubes 6 or to the chamber into Which the front ends of these tubes open. when necessary.

The radiator casing 19 is provided with a transverse flue 30 which is wide enough to communicate with the e of both of the partition 22 lower tubes 0, and this tube lit; ti against the front wall of the radiator and is ipported at its rear end by tut; of a suitable rib 31 it'orn'icd on the ir race of the rear wall of the radiator. ic flue 230 communicates centrally with an. outlet opening surrounding which is a cast iron collar 33 similar to the collars 21 bolted to the outside of the rear wall 01' the radiator 19 and extending through an opening in the rear wall of the outer casing. Over the outer end of this collar is slipped a conduit which forms a branch of the line 5, so that the gases after passing through the upper and lower tubescan then pass out through the smoke fine.

The radiator 19, as will appear from an inspection of Figs. 3, 4 and is shaped in cross-section like the segment of a circle. and the flue 30 does not obstruct the pas sage of gases upward through the radiator because there are spaces on either Sitlc of this fine through which the gases oi" coin? us; tion can pass on their way to the upper tn 6. After passing through these upper in the reach the chamber formed in the upper part of the front of the casing and tin-n downward to pass through the lower tubes and the flue 30 and then out oi thc furnace to the chimney.

.\t tlic l wer part of thc ru-nliatw' ir line with the collars 1? and lei o1 cning which is a.--sociatcd boltcil to the .cui'

ll) Ill'ul is an with a collar 35 wall or the radiatn and passing through an open ng at the rcar oi the casing l a ovc the opening 7. in this collar is mounted a suitable damper 3 1. and the lower end of the smoke tine 35 will be pro\ ided with a transvcrse extension which is slipped mm the outcr end of the collar. and when the damper so is open some of the gases can be allowed to escape directly through the line 5 in tead of passing upward through the tube- 3.

The inside of the casing l carries deflector plates 37 which :H'c secured at the sides and normally extend upward at a slight inclination, approximately to the sides of the outer tubes 6 in the upper layer. Thcir function is to prevent air passing in through the opening 7 from pas-ing out through the tubes 8 without first coining into contact with the heating tubes 6. and I can regulate this heating etl'cct by changing the position of the plates, so that a reatcr or less quantity of air can be cause to pass through the casing without coming into direct contact with the heating tubes.

As shown in Figs. 5%, l and ii. the horizon tal cross-sectional shape of the furnace is approximately circular. The \\':ill. of the casing 1 are made ot' plarcs ot' suitable. thickness and the casing may be prov idcd with an extended fr nt whi h is losed by i that my furnace this plate may be received in a groove 38 in the base 3, the base being extended in front to correspond with the oxtcn 'on of the easing, and the plates forming ill bottom of the casing around the id s and back will be held in place by an annular rib ll on the base 3, which will pass a ound the bottom edges of the sides and bani; oi the casing and engage the same hen malleable iron ronical rings 1 2* are driven into the ends of those tubes. the seams of the latter permit snlii l. t otouiuion to cause the outer Siltltf? ol' the tube to have a gas-tightwoutart n ith the edges of the open ings in the plate The operation any furnace will now be clear. When there is a fire, air passing in through the opening '4' first comes into contact with the Walls of the fire-boa, collars l7 and id and the tubes passing out through the fine 30 after being heated. The hot gases of combustion pass through the collars 17 and 18 in the radiator ll) up past the llue 30 into the upper tubes ti. then toward ilie front of the furnace, then downward through the lower tubes 6 and out through the due 30 and the collar 33 into the flue. 5. The damper 36 gives a direct dra ft through the chimhey when open and useful when the lire is .to be started or replenished, as will be rea ilv understood;

From the above description it will be seen is so constructed that it an be readily cleaned andilrept clean at all times, and in case of the parts becoming worn and having to be replaced the replace. ment can be easily effected. count of the h rge extent of radiating sur face into contact Eiv'th which the air passes on its nay thr h the inn-inn i. l do not reouire as but a A r to get a good heating; of fect.-. can also use a cheaper grade of coal or other; fuel. such as vwid.

fin account of the manner in which my furnace is construct d thilcaliane of gases from the fiife box into the collar or other apartment in Which tin: same is operated is impossible. l 'hc doors are all in'rangrcd so as t fit tightly the openings which they control. and the radiator l9, the firebox 4 and all o l' the fines through which the gases pass on their 'tvay through the furnace and out of the same are made with leak-proof joint-sv It will be seen from the tubes 6 are arrangcd that the hot gases when they reach the top of the fiu'naoe are spread out to a. considerable extent and the air to be heated thus "passes not only around the tubes but among: them. it is this construction which gives a thorough and efiicient effect.

I wish to have it under mil that the above description is illustrative only and discloses but one embodiment of my invention. and I do not care to be limited to the exact details Further. on acthe manner in Wllifiili shown and described, but reserve to myself the right to make nich cluingcs in the shape, size and arrangcincnt ol the parts as fairly tall lllllll the scorn nnd spirit. of my inveim lion.

'lzning thu described my invention, 1 lain: a no. and i hlll. in stair-e y Letters latrnt:

l. in a l ol nil furnace a asing ha\ ing an air inict 11L its: war lower portion. a tire box in {la lower front. portion of the casing, a ou iator in tin rrar portion of the casing aboi c the air inlet and extending to the top of the vzalffl', said radiator being spaced from and having a line. connection with the lirc box a chamber at the front of the casing above the tire lrU.\' apl rality of heating tubes arran cd in tiers in the upper part of the casing. the upper tier of tubes having their ends opening into thc cham er and radiator and the lower ticr hating one end opening into the said chamber, and a fine leading to an outlet llue and with whirli the other ends of the lower tier of tubes are connected.

2. In a device of the kind described; the combination of a casing, a lire-box located in the front end of said casing. a radiator located at the rear of the casing, means cstablishing colnmunication between the firebox and the radiator, a plurality of heating tubes communicating with the front wall of thc radiator near the top thereof and extending toward the front of the casing. 21 ehamber at the front of the casing' and communicating with the front ends of -said tubes. additional tubes communicating at- !bcir front ends with said chamber, and a doc extruding through the radiator and connccting: the rear ends of the last named tubes with an outlet line.

3, [n a dcvice of the kind described, the ronibination of a casing, a fire-box located in the front end of said casing, a radiator segmental in shape and located at the rear of the casing, said radiator extending from a short distance from the bottom of thecasing to the top thereof, a flue connection between the fire-box andthe lower ortion of the radiator, a plurality of heating tubes communicating with the front wall of the radiator near the top thereof and extending toward the front of the casing. a chamber at the front of the casing and communicating with the front ends of said tubes, additional tubes below the first tubes and comnnminating at their front ends with said chamber, and a fine connecting the rear ends of thelast named tubes with an outlet flue, said flue passing through the radiator from the front to the rear of the same.

4. In a furnace, the combination of a casing. a fire box in the lower. front portion of the casing, a radiator ixrthe rear portion of the casing and communicating at it); lower end With the fire box, an outlet flue having a damper controlled connection with the radiator, heating tubes arranged in tiers in the upper part of the casing, the upper tier being connected with the upper end of the radiator, a chamber at the frontend of the casing and with which the front ends of the tiers of tubes con'imunicate, and a flue extending through the radiator and connected with the lower tier of tubes and with the outlet flue above the connection of the radiator with said flue.

5. In a furnace, a casing having an air inlet at its lower rear portion, a. tire box in the lower front portion of the casing, a seg mental-shaped radiator in the rear portion of the casing and extending to the top there of, a flue connecting the radiator with the tire box, an outlet fine with which the radia tor is connected, a chamber at the front of the casing above the tire box, a flue extending through the radiator and connected with the outlet line above the connection of the radiator with the outlet flue. and heating tubes arranged in tiers in the upper part of the casing, the tubes of the upper tier having their ends opening into the radiator and chamber and the tubes of the lower tier eing less in number and having their ends opening into the said chamber and the flue extending through the radiator.

6. A furnace, comprising a casing having an air inlet in its lower rear portion, a tire box in the lower front portion of the casing, 11 segmental radiator in the rear portion of the casing, said radiator extending a short distance from the bottom of the casing to the top thereof, a flue connecting the fire box with the lower end of the radiator, an outlet flue outside of thecasing, a valved connection between the outlet flue and the lower part of the radiator, a chamber in the front of the casing above the tire box, a heating tubes arranged in part of the casing, tier being of greater tier and the tubes of tiers in the upper the tubes of the upper number than the lower each tier having one end plurality of r opening into the said chamber and the tubes of the upper tier having their other-ends opening into the upper end of the radiator, a flue extending through the radiator and into which the tubes of the lower tier open, and a fine connection between the outlet flue and the flue extending through the radiator.

7. In a hot air furnace having heating tubes, a. casing, a fire box in the lower front portion of the casing, the casing having a rib on its inner front face about one level with the top of the tire box, a transverse vertical plate between the top of the fire box and top of the casing, said plate extending from side to side of the casing and provided with apertures to receive the ends of the heating tubes and with a foot resting upon the lire box, and a transverse horizontal plate resting upon the foot of the vertical plate and the rib of the casing, said plate extending from side to side of the easing and forming with the vertical plate and the front of the casing, a chamber.

8. in a hot air furnace having heating tubes. a casing ha .ing a flange on the inner face of its top and a rib on the inner face of its front wall, a the box in the lower front portion of the casing, a radiator in the rear portion. of said casing, a vertical plate having a foot resting upon the fire box aud engaging the flange of the top of the casing, said plate being apertured to receive the heating tubes and extending from side to side of the casing, longitudinal rods secured to the radiator and the rertical plate, and a horizontal plate resting upon the rib of the casing and the foot of the vertical plate and forming with the vertical plate and the front of the casing, a chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK OTTO MOLL.

Witnesses J. P. Mnnnrnn, E. B. HOLMES.

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