US644505A - Garbage-furnace. - Google Patents

Description

Patented Feb. 27, |900. S. W. DIXON. @Mammal FURNACE. (Application led Oct. 17, 1898.)

5 Sheets-Sheet l.

(No Model.)

Edi-1.365% MWL/W www No. 644,505. Patented Feb. 27, |900. S. W. DIXON.

GARBAGE FURNACE.

(Application led Oct. 17, 1898.)

5 Sheets-Sheet 2,

(No Model.)

No. 644,505. Pateltd Feb. 27, |900. S. W. DIXON.

GARBAGE FURNACE.

(Application 1e`d Oct. 17, 1898.) (No Model.) 5 Sheets-Sheet 3.

gif

. nnnaumnuuuujmu Patented Feb. 27, |900. No. 644,505. S- w1 DIXON.

GARBAGE FURNACE.

(Application filed O'ct. 17, 1898.)

5 Sheets-Sheet 5 (P510 Model.)

* Nr'rnn STATES- sAMUEL vv. DIXON,

GARBAGE- OF FINDLAY, OHIO.

FU RNAGE.

SPECIFICATION forming part or Letters Patent No. 644,505, date@ February 2v, Ieoo. Application led October 17, 1898. Serial No. 695576 7. (No model.)

To all whom t may concern:

Beit known that I, SAMUEL W. DIXON, a citizen of the United States, residing at Findlay, in the county ofHancock and State of Ohio, have invented a new and useful Garbage-Furnace, of which the following is Aa specification. l

This invention relates to crematories of that type known as garbage-fu rnaces, which are specially designed for consuming in large quantities the garbage and refuse of cities and towns.

To this end the main and primary object of the present invention is to construct a garbage-furnace in a simple and durable manner With a minimum number of parts and having means for thoroughly and effectively drying and burning garbage, night-soil, dead bodies, and other wet. and offensive matter.

The invention also contemplates a construction of furnace providing for a thorough separation of the liquid and solid matter and the drying of the solid matter to utilize the same as fuel for keeping up the lire of the main consuming or cremating chamber.

The'invention. further contemplates animproved construction of furnace having means for protecting the garbage-platform from the direct'action of the fire, while at the same time providing for an effective circulation and distribution of the heat to the garbage on the garbage-platform, whereby a thorough drying thereof by evaporation is accomplished.

Another important feature of the invention isan improved construction of platform for supporting the garbage while being dried in the evaporating-chamber and which platform not only serves to provide for separating the liquid from the solid matter, but also acts in the capacity of a supporting-carrier forv delivering the garbage when dried to the feeding-point, Where it is delivered to the main cremating or combustion chamber.

The invention also contemplates a novel and efficient construction of scent-consumer within the stack of the furnace to provide for the complete combustion of combustible va-y pors and the thorough deodorization of odoriferous gases, whereby all scent incident to the 'operation of the furnace is entirely destroyed and the gases which issue out of the stack are entirely eliminated of foul-smelling and poi# son-ladened gases.

- Other important objects of the invention Will readily appear to those skilled in the art as the nature of the invention is more fully understood; and the same consists in the novel construction,combination,and arrangement of parts hereinafter more fully described, illustrated, and claimed. c

While the invention is necessarily susceptible to a variety of modifications Without departing from the scope thereof, still the preferred embodiment thereof is illustrated in the accompanying drawings, in Which- Figure 1 is a vertical longitudinal sectional viewof a complete garbage furnace constructed -in accordance with the present in vention. sectional View, omitting the garbage-carrier from the evaporating-charnber. Fig. 3 is a vertical longitudinal sectional View of a portion of the furnace, taken on the line 3 3 of Fig. 2 and exposing the passages connecting the longitudinal side heat-lines with the main cremating or combustion chamber. Fig. 4 is a transverse sectional view on the line 4 4 of Fig. l. Fig. 5 is a similar View on the line 5 5 of Fig. l. Fig. 6 is a similar view on the line 6 6 of Fig. l. Fig. 7 is an enlarged detail view of the front end portion of the furnace-casing, including thecremating or combustion chamber. Fig. 8 is an enlarged vertical sectional view of the scent-consuming combustionchamber in the stack. Fig. 9 is an enlarged longitudinal sectional view of a portion of the garbage-carrier. Fig. l0 is an enlarged detail transverse sectional view of the garbage-carrier,showing the adjacent protective tire-brick Walls at the sides thereof.

Referring to the accompanying drawings, the numeral l designates a furnace-casing built in any suitable length, according to the required capacity of the furnace, and said casing is preferably built of masonry braced or stayed in any suitable manner and formed with an arched closed top portion 2, provided therein With a longitudinal series of feedopenings or manholes 3, through which the garbage to be burned is introduced and which openings or manholes are normally closed tightly by the manhole-covers 4, Whichpreferably have a suitable counterbalanced Fig. 2 isa horizontal longitudinall IOO connection 5 therewith to facilitate the opening and closing thereof; but as this kind of connection is well known in the art the same is simply indicated in Fig. 1 of the drawings in connection with one of said covers 4.

The furnace-casing 1 is arranged horizontally and is of the usual elongated form, and in the present invention the entire interior of the casing from-end to end thereof is formed into a continuous evaporating-chamber G, within which chamber a separation of the solid and liquid matter takes place, as well as a thorough drying of the garbage,to remove all moisture and prepare the same for use as fuel.

The longitudinal closed evaporating-chamber 6, which extends longitudinally from end to end of the furnace-casing, is inclosed at the bottom by a bottom drain iioor or basin 7. This drain floor or basin 7 is formed at the bottom of the evaporati11g-chamber and is imperforate, so as to retain the liquid matter thereon, and is downwardly convergent to a central point, where the same is provided with a drain-opening 8, to which is connected one end of a drain-pipe 9, leading to a sewer or other point of discharge for the liquid matter to be drained out of the evaporating-chamber.

The longitudinal evaporating-cham ber 6 of the casing has built up therein at its opposite inner sides the protective tire-brick radiating-walls 10, which are spaced from the main side walls of the casing to form at the opposite sides thereof the longitudinal side heat-flues 11, which extend the full length of the evaporating-chamber and substantially the full length of the furnace-casing itself. The opposite inner fire-brick walls 10 are arranged parallel with each other at opposite sides of the casing and have their upper edges terminate short of the crown of the evaporating-chamber to form the continuous longitudinal upper heat-circulating passages 12, which provide communication between the flues 11 and the interior of the evaporating-chamber at the upper opposite sides of the latter. The side heat-dues 11 are provided at their rear ends with circulatingopenings G, communicating with the interior evaporatirig-chamber G, so that only a portion of the heat which is circulated therein passes into said chamber G through the passages 12. The front ends of the said side heat-lines 11 communicate with the vertical passages 13, formed in the main side walls of the furnace-casing at the front end thereof and openinginto the side heat-channels 14, into which the fire and heat pass from the side due-openings 15, formed in opposite sides of the cremation or combustion chamber 16, built wit-hin the furnace-casingat the cxtreme front thereof and having no direct communication with the evaporating-chamber 6, except through the side heat-fines 11 in the manner explained.

The main cremating or combustion chamber 16 is formed with the usual fire-box 17, having arranged therein the fire-grate 1S, be-

neath which is located the ash-pit 19, and said ashpit as well as 4the nre-box have the usual door-inclosed openings communicating therewith at the front end of the furnace. In the present invention, however, the said cremating or combustion chamber 1G is made sufficiently large, so as to accommodate all of the garbage that is dried andV ready for fuel, as well as to accommodate therein on its fire dead bodies and the like which ca nnot be conveniently handled on the movable platform or carrier arranged within the evaporating-chamber and which will be presently referred to. The said cremating or combustion chamber 16, in addition to the side ueopenings 15, is provided with a closed top portion 20, provided therein with one ormore manholes 21, normally inclosed by the mauhole-covers 22, which preferably have weighted counterbalance connections 23 therewith, so that the attendant may conveniently uu cover the said opening or openings 21 when a fresh supply of dry garbage or refuse matter is to be delivered into the chamber 1G. The closed top portion 2O of the cremating or combustion chamber 1G is provided on its upper surface with an inclined floor24, which declines from the rear portion of the masonry of the chamber toward the opening or openings 21, so as to facilitate the feeding of the dried garbage into the cremating or combustion chamber, and said inclined floorportion at the top of the combustion or cremating chamber 1G, forms the bottom of a feeding compartment 25, built at the front end of the furnace-casing above the chamber 16 and provided with a door-inclosed front opening 26.

The front feeding-compartment 25, above the chamber 16, is inclosed at its rear side by a wall 27, forming the front end wall of the evaporating-chamber 6 and provided therein with a draft-opening 28, which communicates directly with the interior of the evaporatingchamber, so as to admit air and form a draft for carrying the vapors and odor-laden gases to the stack. Directly adjacent to its front end wall 27 and in the bottom thereof the said evaporatingchamber G is provided with a discharge opening 29, which opening is covered and uncovered by a horizontally-arranged vertically-swingingdrop'door30. The drop-door 30 and the opening 20 are arranged in a plane above the inclined Hoor 24 and at one side of the vertical plane of the opening or openings 21, and said door 30 is hinged at one edge, as at 31, so as to permit its other free edge to drop and deposit the garbage on the door 2t near the opening or openings 21, so that it can be delivered through such openings into the cremating or combustion chamber 16. The hinged drop-door 30 is held normally closed with its free edge abutting lagainst a stop-bar 31 by means of a flexible connection 32a, supported on suitable pulleys 333L exterior to the furnace-casing, and carrying at its terminal opposite the doora weighted receptacle 34, which provides for over- IOO IIO

balancing the door 30 until the same is overbalanced itself by the accumulations of dried garbage, which are delivered on top of the drop-door. When the accumulations of the garbage are sufcient to overcome the weight of the weighted receptacle 34, the drop-door automatically opens and permits the garbage to fall onto the inclined iioor 24.

To provide for the support of the garbage in the evaporating-chamber and the feeding thereof to the discharge-opening 29, there is employed a garbage-carrier 32, arranged 1ongitudinally within the evaporating-chamber above and out of contact with the bottom drain door or basin 7 and extendingin a horizontal direction from one end of the chamber to the other. The garbage-carrier 32 essentially comprises the oppositely-arranged endless carrier-chains 33 and the platform-bars 34, which together form a movable platform or grate for the garbage. The endless carrier-chains 33 are arranged horizontally at opposite sides of the evaporating-chamber next to the protective radiating-walls 10 and are arranged to pass over the oppositely-located pairs of chain-wheels 35, mounted on shafts 36, arranged, respectively, at opposite ends of the evaporating-chamber- The chainwheel shafts 36, at opposite ends of the evaporating-chamber, are arranged transversely and journaled in suitable bearings fitted to the main side Walls of the furnace-casing, and the chain-wheel shaft 36 at the front end of the furnace-casing has mounted on one terminal exterior to the casing a gear-Wheel 37, which is geared by a train of gears 33 to an operating-shaft 39, journaled transversely of the .furnace-casing and provided on its opposite extremities on opposite sides of the casing with the crank-handles 40, which are grasped by the attendants when it is desired to move the garbage-carrier for delivering the dried portions of the garbage to the dischargeopening. The gearing described is the preferable means employed for communicating motion to the carrier; but it is obvious that other means might be employed formoving the carrier-chains without departing from the spirit of the invention.

The platform-bars 34 are preferably formed of T-strips of metal and are bolted or otherwise rigidly fastened to the opposite carrierchains, said bars extending transversely across the evaporating-chamber and connecting said opposite chains. The T-platform bars 34 are arranged in a continuous series,.

side by side, and spaced a short distance apart to provide therebetween drain-spaces forming a grate-surface th rough which the liquid matter may pass, while at the same time not permitting the main portions of the solid garbage to fall off of the carrier, and the said platform-bars, which thus provide or form a slatted garbage-platform for the garbage to be dried, are provided at their opposite vends with the right-angularly disposed parallel end arms 4l, which form inclosing sides for the platform formed by the series ofthe bars at the upper side of the carrier. v

To provide for the proper support of the upper portion of the garbage-carrier, which forms a movable slotted platform for the garbage, the upper portions of the chains are preferably arranged to rest and work on a longitudinal series of supporting-rollers 42. A series of the supportingrollers 42 is arranged at each side of the evaporating-chamber between the upper and lower portions of the carrier-chains, and said supporting-rollers have their spindle extremities 43 j ournaled in bearing-notches 44, formed in the upper side edges of the U-shaped or channeled stringers 45, extending longitudinally of the evaporating-chamber the full length of the garbage-carrier, between the oppositely-located pairs of chain-wheels 35 and supported in position by transverse supporting-beams 46, arranged transversely of the evaporatingchamber between the upper and lower portions of the carrier, and having their ends embedded in the protective radiating-walls 10 at the sides of the evaporating-chamber. The transverse supporting-beams 46 are arranged at intervals and provide for the support of both of the longitudinal channel-stringers 45. It will be observed that the channel-stringers 45 not only form bearing-supports for the rollers 42, but also provide for a partial housing of these rollers.

The supporting-rollers 42 provide for maintaining the horizontal position of the upper portion of the carrier, so that the series of platform-bars at said upper side of the carrier will form a rigid slatted platform for the garbage to be delivered upon, and in order to prevent the sagging of the lower portion of the carrier below the plane of the rollers 42 longitudinal carrier-supporting beams 47 are arranged horizontally within the lower portion of the evaporating-chamber. The longitudinal supporting-beams for the lower portion of the carrier extend the fulllength of the latter and are supported in contact with the T-platform bars 34 of the carrier by means of-suitable uprights or standards 48, arising from the floor of the evaporating-chamber. The T shaped formation of the platformbars 34 not only increases the strength thereof and enables them to withstand the heat Within the evaporating-chamber, but also serves another important function in connection with the use of the carrier as a garbage-supporting platform and conveyer. In this connection it is to be observed that the platform-bars 34 have iiat sides or bases secured to the carrierchains 33, thereby disposing the webs or iianges of the bars in an upward direction from the chains. By reason of this disposition it will be seen that the webs or flanges in the Lipper portion or run of the carrier, which portion or run constitutes the garbage-platform, form therebetween pockets which receive and hold the solid portions of the garbage, while at the same time permitting the liquid to drop ICO IIO

through the carrier in the manner previously explained. As the platform-bars in the upper portion or run of the carrier pass over the wheels 35 at the furnace end of the casing, or, in other words, pass from the upper run into the lower run of the carrier, the horizontal alinement of said bars is broken and the pockets formed between the bars and their webs or flanges are caused to flare outward or open up so as to freely discharge or drop the garbage. This may be plainly seen in Fig. 9 of the drawings.

The garbage which is delivered onto the garbage-carrier through the top feed-openings or manholes 3 is necessarily subjected to a separating action by reason of the slatted structure of the carriage, and the liquid matter will freely pass through the carrier onto the bottom drain floor or basin 7 and thence through the drain 9, and at the same time small particles of the garbage and refuse will at times work its way through the interstices of the carrier onto the floor '7 of the evaporating-chamber. Such portions of the garbage may be removed from the floor 7 through the side cleaning-openings 49 formed in the opposite side walls of the furnace-casing and communicating at their inner ends with the bottom portion of the evaporating-ehamber G immediately above the plate of the floor 7. The other ends of the side cleaning-openings 49 are closed by the doors 50, but through these openings 49 accumulations of the garbage may be taken off of the floor 7 and removed to the cremating or combustion chamber 16, and if not sufciently dried for fuel may be placed on the floor 24 of the feedingcompartment 25 until in a proper condition for burning.

While the heat and other products of combustion are mainly circulated through the side heat-fines ll and the longitudinal passages 12 and delivered into the evaporatingchamber above the garbage-carrier therein, it is necessary at times to circulate the heat from beneath and directly through the garbage supported on the upper platform portion of the carrier, and to provide for this the protective radiating-walls l0,which form one side wall of the flues 11, are provided at intervals with supplemental circulating-openings 5l, which open into the eVaporating-chamber in a plane below the upper platform portion of the garbage-carrier, and these supplemental circulating-openings 5l are covered and uncovered by means of iire-clay slides 52, working within the lues ll and through the top of the furnace-casing, said slides 52 preferably having a counterbalance connection 53 with their upper ends to facilitate the raising and lowering thereof. Adjacent to each controlling-slide 52 for the openings 5l is located a vertical fire-clay cut-off slide 54C, which cutoff slide is arranged transversely of the side heat-flue ll and has its upper end above the top of the furnace-casing attached to a countcrbalance connection 55 to facilitate the raising and lowering of thc same. rlhe cut-off slides 5i extend transversely of the side heatiiues l1 the full width thereof and when lowered, as shown in Fig. 3 of the drawings, cut off the continuous circulation of the heat through the said fiucs. So it will be observed that by manipulating the slides 5i the free circulation of heat may be cutoff from the sides of the evaporating-chamber at any point desired and caused to pass through the supplemental circulating-openings 5l, as well as the longitudinal passages l2. In connection with the slides 52 and 54 it is to be understood that any pair of these slides is brought into play whenever necessary and are operated in pairs-that is, when a slide 52 is closed over the opening 51 the adjacent cut-off slide 54 is raised out of the flue l1, so as to allowa free circulation there-through, and vice versa.

The steam, vapors, gases, and odors that arise from the garbage when undergoing evaporation within the evaporating-chamber G pass out of the rear end of such chamber 'through the escape-opening 56 and enter the lower portion of the stack 57, where the same are subjected to the consuming and deodorizin g action of the scent-consumer constructed within the lower end of the stack.

The stack 57 is built at the rear end of the furnace-casing, and the base portion of the stack practically formsa part of the masonry of the casing, and said base portion of the stack, which communicates with the rear end of the evaporating-chamber 6 through the escape-opening 56, is formed with a combustion-chamber 57a, having at the bottom thereof a pair of fire-boxes 5S, in which a fire is maintained from fuel on the grates 59 or from any other source familiar to those skilled in the art, and the two fire -chambers at the lower end of the combustion-chamber 57 are separated from each other by a partition GO, which extends the full length of the chamber 57"L and also extends to the top of the stack, thereby making a complete double chimney or stack; but said partition immediately above the plane of the fire-grates 59 terminates at one edge within the door-inclosed fire-box opening 6l, communicating with both of the fire-boxes 58, thereby permitting the odoriferous gases and other products of combustion to circulate from the opening 5G into the combustion-chamber at both sides of the central vertical partition thereof.

The combustion-chamber 57 has built within its central partition and within the side walls at opposite sides of said partition the triangularly-shaped fire-brick (S2 and 62, the central tier of such brick 62, which is interposed in the partition 60, having at opposite sides thereof similarly-curved faces 63 and arranged with their apices in juxtaposition, while the fire-brick 62, lining the inner walls of the chamber 57, may be properly described as being bisections of the central brick 62 and only provided with curved faces 64. at one side. At this point it will be observed that IOO IIO

the tier of fire-brick 62 at the sides of the passages through the combustion-chamber is tted directly in and line the Walls of the stack proper, thereby protecting the Walls from the intense heat from the separate fires in the fire-box 58. Consequently the side tiers of fire-brick 62a not only serve as a protect-ive lining for the stack-walls, but also present highly-heated surfaces to provide for the deodorization of the odoriferous gases. By reason of the triangular shape of the iirebricks 62 and 622L the same are provided with projecting portions or points which project transversely into the separate deodorizingpassages 65, formed within the combustionchamber 57a, at opposite sides of the partition thereof, and the said projecting portions respectively of the central and side tiers 62 and 62a are alternately arranged, whereby the curved faces or depressions 63 and 61 of said brick form continuous sinuously-curved deodorizing-passages through which the products of combustion and all gases must pass before they find escape into the main flue of' the stack.

At the points where the fire-brick 62 and and 62 are matched together such brick are preferably arranged to leave guide slots or spaces 66, in which are mounted regulatingslides 67, which slides extend at their ends through the sides of the stack and may be operated in any suitable manner. It will be observed that the regulating-slides 67 are preferably located at the projecting portions or points of the meeting fire-brick and are adapted to be projected more or less into the deodorizing-passages 65 in order to provide' means for retaining the heat within the passages 65 in the event of the 'draft being too rapid through the stack.

By reason of constructing the combustionchamber 57 with the peculiarly formed and arranged tire-brick, as described, it will be observed that the fire and heat from the fireboxes 58 cannot skirt the said fire-brick, but are deflected laterally on account of the sinuosity of the passages from wall to wall of the latter during the passage therethrough,there by heating the same up to the point of incandescence, so that as the odoriferous gases circuitously pass through the sinuous deodorizing-passages 65 all combustible gases will be thoroughly consumed and the other gases entirely relieved of their odor.

The construction of scent-consu mer just described is designed as a distinct improvement over scent-consumers of the type disclosed in my former patent, No. 461,327. This type of scent-consu mers simply involves the arrangement of a plurality of separate and disconnected fire-brick within the stack of the furnace and the arrangement of these brick preferably in a staggered relation, whereas the present invention contemplates a construction in which such an arrangement of fire-brick is entirely obviated. In the construction shown in my former patent the use of a plurality of disconnected fire-brick is open to many objections, the principal one of which is that the comparatively small spaces surrounding .the brick very quickly become clogged with sediment and ashes that arise from the garbage. Furthermore, the disordered or staggered arrangement of the separate brick seriously interferes with the draft of the furnace and constitutes a permanentimpediment in the stack. Furthermore, during theoperation of the furnace the ashes and sediment will adhere to the separate bars of brick and not only render the same absolutely Worthless as scent consuming mediums, but quickly clog up the comparatively-small passages and cut O the draft of the furnace. These objections are entirely overcome by the construction of scent-consumer involved in the present application. This scent-consumer provides substantially continuous passages through which the products of combustion may freely pass without interfering with the draft, while at the same time being subjected to the highly-heated surfaces of the fire-brick, which form continuous walls for the passages.

To provide for preventing the stack 57 from becoming too highly heated, the same has formed in opposite side walls thereof the longitudinal cold air passages 68. These cold-air passages communicate at their lower ends at opposite sides of the combustionchamber 67 with the air-inlet openings 69 and extend from this point the full height of the stack. A circulation of cool air is necessarily maintained in the passages 68,Y and thereby prevent overheating of the stack-walls, and consequently greatly adding to the durability of the stack.

In the foregoing the function of the different parts of the furnace have been fully ein plained; but with respect to the general operation thereof it may be stated that iires are first started in the fire-boxes 58, so as to thoroughly heat up the combustion-chamber of the scent-consumer within the stack, and the garbage, night-soil, or other wet and offensive matter is then deposited upon the garbage-carrier within the evaporating-chamber, after which a fire is made in the main cremating or combustion chamber 16. The heat and other products of combustion in the chamber 16 find escape into the evaporatingchamber through the flues and passages described and cause an evaporation of the matter on the garbage-carrier and a consequent drying thereof. When the garbage and other matter on the carrier are thoroughly' dried,4

the carrier is moved forward in the manner explained, so as to deposit the-same on the dumping-door 30. When a sufficient quantity of dry garbage has been deposited on said dumping-door, the same will overbalance. the weight 34 and deliver the garbage onto the inclined ioor 24C of the feeding-compartment 25, after which the opening or openings 21 are uncovered and the dry garbage fed IOO IIO

into the chamber l0 as fuel, and by continually feeding dried garbage in this manner into the chamber 1G a perpetual tire is maintained. In the event of the garbage delivered to the floor 24 not being suiiciently dry the said door will complete the drying on account of its highly-heated condition, and all vapors, gases, and odors arising from any garbage on said [loor 2t will pass lthrough the draft-opening 2S into the evaporatingchamber.

An essential feature of the present invention is the provision of the protective heatradiating walls lO. These walls, besides forming the side heat-flue ll, protect the garbagecarrier from the direct action of the tire and heat, while at the same time the said walls by reason of being made of tire-brick become heated to a high degree ofheatand will act in the capacity of radiating surfaces or walls, so as to throw out heat by radiation into the evaporat-ing-chamber 6 containing the garbage-carrier. This radiated heat, in connection with the natural circulation of hot air and other products of combustion through the ues 1l and passage 12, provide forathorough evaporation ofthe garbage and the consequent drying thereof, so that the saine can be used as fuel for maintaining the fire in the cremating or combustion chamber 16.

As already described, the partition GO within the stack extends to the top of the same and forms a complete double chimney, and the combustion-chamber 57 at thelower end of the stack is provided at opposite sides of the partition with the separate deodorizingpassages 65. The primary purpose of this double construction of stack and consuming or combustion chamber is to adapt the stack for use in connection with two furnaces, it being observed that the stack is provided directly opposite the escape-opening 56 with a corresponding opening 5G, designed to form an escape-opening for a duplicate evaporating-chamber; but for the purposes of this invention only one evaporating chamber or furnace proper is shown, and in using this single construction of furnace the odoriferous gases and other products of combustion therefrom will pass around the lower end of the partition and circulate into both deodorizing-passages, as already explained.

In connection with each of the deodorizingpassages G5 it is to be observed that the essential feature of such construction is not the provision of tire-bricks of a triangular shape, as described, but to provide each passage with crooked or sinuous walls, so that the odoriferous gases are compelled to take a circuitous course and come in direct contact with said crooked or sinuous walls, which are highly heated before said gases can nd escape into the open Hue of the stack above the combustion-chamber 57a.

It will be obvious that the shape of the tirebricks 62 and 62 may be varied and even dispensed with without departing from the fundamental feature of thescent-constimer,which is the continuous crooked or sinuous passage through which the gases are compelled to pass. In this connection it will he further observed that while a duplex construction of scent-consumer has been described and illustrated each. of the deodorizing-passages G5 performsvits function independently of the other, and consequently a single one of such passages 65 could be employed in a stack without departing in the slightest degree from the spirit or scope of the invention.

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described furnace will be readily apparent to those skilled in the art without further description, and it will be understood that changes in the form, proportion, andthe minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

l. In a garbage-furnace, the casing having an interior evaporatiiig-chamber, and provided in its longitudinal side walls with heattlues opening into said chamber contiguous to the crown thereof, a tire-chamber independent of the evaporatiiig-chamber, and in direct communication with said heat-flues, and a garbage-support arranged in the evaporating-chamber below the plane of communication between the heat-fines and evaporating-chamber nearthe crown of the latter, substantially as set forth.

2. In a garbage-furnace, the casinghaving an interior evaporating-chamber, a pair of separate longitudinal heat-fines arranged respectively at opposite sides of said chamber, and extending the full length thereof, a garbage-support arranged within the evaporating-chamber between the two heat-fines, the latterhaving means for circulating the heated products of combustion above and below the latter, and a tire-chamber in direct communication with said titles, substantially as set forth.

3. Inagarbage-furnace, the furnace-casing having an interior evaporating-chamber, separate upright interior heat-radiating surfaces independent of and spaced from the main side walls of the casing, the interval between said surfaces and the main side walls forming heat-circulating tlues, means for maintaining said radiating-surfaces in a heated condition, and a garbage-su pport arranged between said radiating-surfaces, substantially as set forth.

4. Inagarbage-furnace, thefurnace-casing having an interior evaporating-chamber, and separate protective heat-radiating walls arranged longitudinally within the chamber at opposite sides thereof, said radiating-walls being independent of and spaced from the main walls of the casing, means for circulat- IIO ing heated air and gases alongside of and over the top edges of said radiating-walls, and agarbage-support arranged between said radiating-walls, substantially as set forth.

5. In a garbage-furnace, a furnace-casing having an interior evaporating-chamber, and protective lire-brick radiating-walls arranged longitudinally within said chamber at opposite sides thereof, said fire-brick walls having their upper edges terminating short of the crown of the chamber to form continuous longitudinal circulating-passages, a firechamber having flue-openings in communication with the flues formed at one side of said radiating-walls, and a garbage-support arranged between said radiating-walls, substantially as set forth.

6. In a garbage-furnace, the fu rn ace-casing having an interior evaporating-chaniber and heat-flues extending longitudinally of the chamber at l[he sides thereof, said heat-fines having continuous longitudinal circulatingpassages communicating with the chamber at the top sides thereof, and supplemental circulating-openings below the plane of said passages, suitable cut-off slides for controlling the circulation through said supplemental openings,.and the garbage-support within said chamber, said .garbage-support having its platform portion disposed in a plane between said circulating-passages and supplemental circulating openings, substantially as set forth.

7. In a garbage-furnace, the casing having an interior evaporating-chamber, and interior walls arranged longitudinally within the chamber at opposite sides thereof to form side heat-lines, said walls having their upper edges terminating short of the crown of the chamber, and provided therein with supplemental circulating-openings, controlling-slides ar-A :ranged to cover and uncover said su pplemental circulating-openings, a separate cut-off slide arranged to work transversely in the heat-flues adjacent to each of said controllingslides, and anopen garbage-support having its platform portion disposed in a plane between the top edges of said walls and the supplemental circulating-openings thereof, substantially as set forth.

S. In a garbage-furnace, the casing having an interior. evaporating-chamber, and side heat-fines extending longitudinally of the chamber at the sides thereof and having continuous circulating-passages communicating With the chamber at the top sides thereof, an open garbage-support arranged in said charnber, and means for directing portions of the heated products in said flues into the evaporating-chamber at points below the plane of the platform portion of the garbage-support, substantially as set forth.

9. In a garbage-furnace, the casing provided With an interior longitudinal evaporating-chamber having a single bottom discharge-opening at one end, side heat-circulating fines in communication with and disposed longitudinally of said chamber, a main cremating or combustion chamber arranged below and beyond the plane of said dischargeopening, and provided at the top with a garbage-receiving heating-floor with a manhole therein, and a feeding-compartment built above the creinating or combustion chamber and partitioned from the contiguous end of the evaporating-chamber, a drop-door covering said discharge-opening and automatically operated by the weight of the garbage, and a garbage-carrier arranged longitudinally in the evaporating-chamber, substantially as set forth.

l0. In a garbage-furnace, the combination of the furnace-@asin g having separate evaporating and cremating chambers, and a combined garbage-carrier and separating-grate supported within the evaporating-chamber, and comprising a traveling endless support, and a plurality of regularly-spaced platformbars providing liquid-drains therebetween, said platform-bars being formed of T-shaped strips whose fiat sides or bases are secured to the traveling endless support, thereby disposing their webs or anges outward from the endless support to form therebetween garbage-pockets which open as the bars pass from the upper run into the lower run of the carrier, substantially as set forth.

ll. In a garbage-furnace, the combination of the furnace-casing having separate evaporating and cremating chambers, and a combined garbage-carrier and separating-grate supported within the evaporating-chamber and comprising an endless apron formed of a plurality of regularly-spaced platform-bars providing liquid-drains therebetween, said bars being formed of T-strips, having at their ends right-angularly-disposed arms forming inclosing sides and whose fiat sides or bases are iitted to the supports for the bars, thereby disposing the Webs or franges of the latter outward from the said bars, substantially as set forth.

12. In a furnace or crematory, the combination with the casing, of a stack formed with a scent-consuming chamber having a sinuous passage with continuous re brick walls, which Walls are formed with alternate projecting portions and depressions, the projecting portions of one wall lying opposite the depressions in the opposite Wall.

13. In a furnace or crematory, the combination with the casing, of the stack formed with a scent-consuming chamber having a sinuous passage with continuous fire-brick wal-ls, provided with alternate projecting portions and depressions, the projecting portions of one wall lying opposite the depressions in the opposite wall, and one fire-brick wall of said sinuous passage being fitted in and lining a wall of the stack proper, substan- IOO IIO

tral and side tiers of fire-brick, which brick are formed with alternate projecting portions and depressions, the side tiers of brick being fitted directly in and lining the walls of the stack proper, and the projecting portions of each tier lying opposite lthe depressions in the adjacent tier, substantially as set forth.

l5. In a furnace or crematory, the combination with the easing, of a stack formed with a scent-consuming chamber, having a sinuous passage with continuous fire-brick walls, which Walls are formed with alternate projecting portions and depressions, with the projecting portions of one Wall lying opposite the depressions ofthe opposite wall, and regulating valves or dam pers arranged at the apices of the projecting portions of said Walls, substantially as set forth.

16. In a furnace or creinatory, the combination with the casing, of the stack provided with a scent-consuming chamber having a central partition, and also having built Within the partition, and in the walls thereof at opposite sides of the partition, approximatelytriangular fire-brick having similarly-curved faces, said fire-brick being arranged in a superposed relation to form projecting or jutting portions, said projecting or juttingportions of the lire-brick in the partition and at the sides of the stack being disposed alternately to form sinuously-eurved deodorizing-passages at both sides of the partition, and a separate fire-box arranged at the lower end of each deodorizing-passage, substantially as set forth.

17. In a furnace or ercmatory, the combination with the casin g, of the stack provided with a scent-consu ming chamberhaving separate continuons sinuous deodoring-passages Walled at each side with lire-brick lining having laterally-projecting portions jutting into the passages, and horizontal regulating-slides adjustably supported between the matching fire-brick at the projecting portions thereof, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

SAMUEL IV. DIXON.

Vitnesses:

E. D. NICKERSON, II. MAUDE BLEAM,

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