US1763159A - Incinerator - Google Patents

Description

H. KLEIN INCINERATOR June 10, 1930.

Filed May 51, 1928 4 Sheets-Sheet 1 H. KLEIN June 10, 1930.

INGINERATOR 4 Sheets-Sheet 2 Filed May 31, 1928 lill'lll Emmi H KLEIN INGINERATOR June 10, 1930.

Filed May 31, 1928 4 Sheets-Sheet 5 H. KLEIN INCINERATOR June 10, 1930.

4 Sheets-Sheet 4 Filed May 31. 1928 Patented June 10, 1930 UNITED, STATES PATENT OFFICE HERMAN KLEIN, OI CHICAGO, ILLINOIS mcmmwron Application filed May 31,

provide an incinerator-of the character in-' dicated which is thoroughly adapted .to the purpose of burning garbage and refuse, which -is simple-and durable, and which can be manu- I; ffactured at such moderate cost-as to make it available for*wide-spreaduse in the field for which it is intended. p f Y Hitherto, incinerators adapted for installatiQn in the basements of homes have met with only the most limited'd'emand, /An incinerator, embodying the. present invention is adapted tothe economical burning of gas, or other fluid fuel, and is designed to make. the best possible use of the heat available from the garbage in the burning thereof.

The present lnvention makes use of a limited number of co-operating elements which can be assembled in a very simple manner.

The improved construction provides efi'ectively for the drying and burning of the garbage; the ready dumping of the ashes and non-combustible objects, such as cans, bottles, and so forth, without danger of clogging and without danger ofinjury to the mechanism; and for effectively conducting away, through a smoke-stack, all'vapors, combustion gases, odors, and so forth.

The present application supersedes my application, Serial No. 139,326, filed October 14, 1926, the invention being herein claimed generically and in a specific embodiment. The claims of said application, No. 139,326, are nowlimited to an element of the invention, specific in character.

embodiment, in the accompanying drawings,

in which-- Fig. 1 is a view, partly in section and partly in elevation, of an incinerator embodying the invention; Fig. 2, a horizontal section taken as indicated at line 22 on Fig. 1, the central drier-employed being shown brokenly in plan, however; Fig.3, a vertical sectional view, on a reduced scale, of a divider which serves as a central flue, the section being taken in a plane which contains the short axis, of

. ragment of the The invention is illustrated, in a preferred 1928. Serial No. 281,135.

the divider, as indicated at line 3 of Fig. 1; Fig. 4,'a broken perspective view showing a I fire-pot; Fi 5, a broken longitudmal sectional view 0 the'combination grate and burner employed; Fig. 6, a broken vertical sectional view taken as indicatedat line 6 of Fig. 1, showin the relatlon of the dischar e-chute of the file-pot, the

' gas-grate housed t erei-n, and the central divider-flue; Fig. 7 ,a transverse sectional view 50 of the gas-grate taken as indicated at line 7 of Fig. 5; Fig. 8', a broken sectional view taken as indicated at line 8 of Fig. 7; Fig. 9, a detail-sectional view taken as indicated at line 9.01? Fig. 1'; Fig. 10, a broken sectional e5 viewtaken, as indicatedat line 10 of Fig. 12, showlng thev smoke-stack connection; Fig. 11, a detail sectional view taken as indicated at line 11 of'Fig. 2, illustratingthe manner in which the fire-pot is removably supported on socket-lugs with which-the inner surface of the drum or' casing is equipped; Fig. 12,.a plan view, ona reduced scale, of the top of the incinerator, the closure of the garbage-chargingopening' being indicated by dotted lines; 76 and Fig. 13, anfinner perspective view of the closure just mentioned.

In the preferred construction, which is illustrated, A designates a drum, or casing; B, a fire-pot removably supported on lugs 30 secured to the inner surface of the casing, said fire-potbeing provided at its lower end with a discharge-chute B; C, an inner drum removably supported'on the peripheral portion of the fire-pot, conforming with the firea5 pot and garbage-burning chamber; D, a gasburning grate housed in the discharge-chute B and having trunnions D and D extend. ing freely through slots with which the discharge chute B is provided, said trunnions so being journalled in the walls of the casing A; E, gas-admission means adapted to supply gas to the grate through the trunnion D, which is hollow; and F, a hollow divdied which serves as a central flue, said divider being removably supported in the fire-pot and having an elongated open lower end which is disposed above the ridge or apex of the gas-burning grate, some of the flames from the grate being adapted to enter the hood-like separator and pass out into the garbage through suitable openings.

Thecasing A preferably is formed mainly from heavy sheet metal. In the form illustrated, it comprises a sheet metal drum 1; a sheet metal base 2 formed with supporting lugs, or feet, 2; a top-plate 3, which may be of cast metal andwhi ch is provided with a smoke-stack connection 3 and with a closure 3 which serves as a lid or cover for the garbage-charging opening 3 with WhlCll the plate 3 is provided; and a door 4 connected with the lower portion of the drum 1 and adapted to give access to the ash-pit, the door 4 being provided with a register 4", through which secondary air supply to the gas-grate and air supply to the burning garbage finds access.

The outlet flue, or pi e connection 3 1s shown provided with a aflle 5; The lid 3" is shown provided with a pivot-pin 6 which engages a perforation 6 in the plate 3, with a hook 7 which engages a curved slot 7 in the plate 3, and with a latch-lug 8 which engages a latch-lug 8 with which the plate 3 is provided. The lid is also shown equipped with a handle 9.

The fire-pot B has a frusto-conical upper portion 10 which is provided at its upper peripheral edge with short radial arms 10 equipped with lugs 1O which are received in recesses with which the socket-members 11 are provided. The socket-members 11 are in the form of castmetal lugs which are secured to the drum 1 by stove-bolts 11. Rivets may be employed, if desired.

The short arms or lugs 10 space the upper peripheral portion of the fire-pot from the drum 1, as indicated at 12. The dischargechute B depends from the small end of the frusto-conical upper portion 10. Preferably, the chute B is of general rectangular form, having a large rectangular bore 13. The sloping inner surface of the portion 10 is provided with radial ribs 14, designed to hold the garbage somewhat out of contact with the general inner surface of the fire-pot. The inner walls of the chute B, which are adjacent the ends of the grate, are provided with vertical ribs 14 which are deep enough to nearly meet the ends of the grate. The remaining walls of the discharge-chute are not shown provided with ribs, but obviously they may be so provided, if desired. The chute is provided with slot-s 15 which permit the fire-pot to be lowered into position after the grate has been installed.

The fire-pot is shown equipped interiorly with lugs 16 which are adapted to serve as supports for the base portion of the divider F. Extending radially outwardly from the lugs 16 are ribs 16 adapted to be embraced by slots with which the member F is provided.

The inner drum C preferably tapers somewhat, the lower end being larger'than the upper end. The purpose is to prevent packing of the garbage. That is, the garbage, as it gravitates downwardly, will tend to drop away from the surrounding wall which the drum C provides. The drum is shown imperforate, but it may contain perforations, if desired.

The lower end of the drum C rests upon a peripheral flange 17, the drum being centered by an annular shoulder 17. The upper end of the drum C is separated from the top plate 3 by a space 18. Clips 19 secured to the plate 3 engage the upper edge of the drum. The top plate 3 is removably secured in place by any desired means.

The gas-grate D is housed in the chute B and has its axis extending transversely across the furnace. The grate preferably comprises a main casting having integral trunnions D and D the trunnion D being tubular and serving as a mixer-tube. The body of the grate comprises a hollow ridge portion 20 having a bore 20 which communicates with the hollow trunnion or pipe D; and wings 21 which slope downwardly and outwardly from the ridge portion. These wings are cored, so as to provide longitudinal conduits 21 near the lateral edges of the wings, and conduits 21 adjacent the ends of the grate and affording communications between the central conduit 20 and the lateral conduits 21*. Thus, the gaseous mixture admitted through the hollow trunnion 21 fills the central conduit 20 of the apex, the lateral conduits 21 of the wings, and the connecting end conduits 21 near the ends of the grate.

The ridge portion 20 of the grate is provided near the ends with lateral burner openings 22, and with end burner openings 22, as will be understood from Figs. 7 and 8; also, the intermediate part of the ridge portion is provided with a narrow rib 22 at the sides where the burner passages 22 open. A crown-plate 23 is applied to the ridge. This consists of curved end segments 23 and a connecting web 23". The segments 23 and connecting web 23" have projecting flanges to guard the burner orifices mentioned.

The conduit 20 is provided also with laterally opening burner passages 24 which are guarded by lips, or small ledges, 2-1.

The conduits 21* have their upper walls provided with small ofl'sets 25 at which burner orifices 25 are located. The conduits 21 are provided with burner. passages 25 which open at the ends of the grate and just below the sloping top wall of the grate.

Upon the upper surface of each wing of the grate is secured a -U-shaped plate 26 having arms 26*. The members 26 have flanges which project sufficiently to form guards for the burner orifices 25 and 25".

The sloping upper surface of the wings of the grate are provided with ribs 27 which are interrupted, as shown in Fig. 6, to accommodate the web portion of the U-shaped plates 26. The ribs 27 extend across the openings 28 of the grate. The U-shaped plates 26 are provided with short ribs 26* which are in alinement with the ribs 27. That is, the ribs 26 take the place of the cut-away portions of the ribs 27 The tubular trunnion D is journalled in a bearing-plate 29 secured to the drum 1. This plate is equipped with a bracket 29 upon which is mounted the gas-admission device E. This comprises a pipe 30 equipped with a gas-cock 30 which is controlled by a timostat 31. The casing of the gas-cock has a spud 30 which projects freely into the bell of the trunnion-like mixer-tube D.

The slotted trunnion D is journalled in a bearing-plate 32 which is secured to the outer surface of the drum 1. As shown in Fig. 9, the plate 32 is equipped with stop lugs 32 and keeper lugs 32*. The trunnion D has a stop 33 adapted to engage one or the other of the lugs 32*, depending upon the direction of rotation of the grate. The extremity of the trunnion D has connected therewith a grate-rocking lever 34 which is pivotally connected with the trunnion by means of a pin 35. The lever is equipped with a lug 34 which is adapted to enter the space between the keeper lugs 32". A spring 36 tends to hold the lever 34 in position to engage the keeper lugs. This corresponds with the normal position of the gas-grate. \Vhen desired, hand lever 34 may be swung outwardly and the grate may then be rocked in either direction, within the limits permitted by the stop lugs 32. to enable dumping of the ashes to be effected.

The separator device F will be understood from Figs. 13 and 6. The device preferably comprises a pair of castings which, when put together, form a hollow member adapted to serve as a central fine. Thus, the device comprises a pair of complemental plates 37 which are of general triangular shape, and which together form a flue having an elongated base portion 37 and a central upstanding portion 37". The plates are connected together by means of screws or bolts 38. They are provided with slots or perforations 39 and 39, through which flames or products of combustion may pass into the garbage. The elongated base portion of the device terminates in arms 37 which are cut away or beveled to conform to the slope of the inner surface of the frusto-conic-al portion of the fire-pot. These arms have slots 37 which fit over the lugs 16 with sutiicient closeness to hold the separator F in upright position. If desired, the separator F may be elevated out of the fire-pot. As appears from Fig. 3. the plates 37 are provided at their inner sides with battles 40.

It will be understood from Fig. 3 that the device F preferably is of narrow width, the short transverse axis appearing in Fig. 3. The long axis of the base portion is shown in Fig. 1. From this view, taken in connection with Fig. 6, it will be understood that the base portion 37 spans the interior of the fire-pot just above the discharge-chute B, so that the elongated base portion affords a hood disposed oi'er the ridge portion of the grate. Products of combustion from the central portion of the gas-grate may therefore pass upwardly into the member F which thus serves as a central flue and as a support which tends to prevent papers and other garbage from settling and packing into the fire pot. Flames and heated products of combustion passing upwardly through the central flue may emerge through the slots and perforations 39 and 39 and find passage through the garbage, thus tending to dry the garbage and quickly ignite it. Flames and heated products of combustion produced by the burning of the gases emerging from the burner openings 24, 25 and 25 may find passage upwardly through the garbage or, in case of necessity, through the central flue F.

In the event that the garbage is too closely packed to permit the passage of all the gases therethrough, some of the gases may find a by-pass through the annular passage 12 about the upper portion of the fire-pot, and thus through the space 12 between the inner and outer drums, it being understood that any gases entering through the annular flue 12' may readily reach the smoke-pipe connections 3 by passing over the upper end of the drum C. Thus, adequate provision is made against checking of the draft, so that gases and odors will not be forced back and out through the air-admission ports or register 4*.

It will be understood from Fig. 6 that a single grate housed in the discharge-chute D serves normally to close the lower end of the fire-pot sufficiently to adequately support the garbage. As the garbage burns, however, the ashes may drop off the sloping wings of the grate and through the passages of the grate into the ash-pit below. lVhen necessary or desirable, the grate may be rocked, first in one direction and then in the other, to dump the burned garbage. It will be noted from Fig. 6 that the central flue F is positioned suflieiently above the grate to permit the rocking action to occur. The dotted lines indicate the position of the grate. after it has been rocked to open the discharge-chute at one side while maintaining it closed at the other side. The lateral edges of the wings are sufiiciently close to the side walls of the chute to maintain closure when the grate is in the normal position shown in full lines; and when the grate is rocked, one wing swings to a vertical depending position while the other wing swings upwardly to a substan tially horizontal position-and at all times serves as a su port for the garbage above it. The grate anc discharge-chute are so related to each other that cans, bottles and so forth are prevented from lodging in such position as to prevent the operation of the grate. On the other hand, when either wing is dropped to the vertical depending position, a large passage is opened at one side of the grate to permit any non-combustible objects which may be in the garbage to drop through the chute into the ash-pan.

The construction described is simple; the parts are readily assembled; and the parts are so related as to be thoroughly adapted to the urpose of burning garbage. The burner ori ces of the gas-grate are so arranged as to direct flames upwardly through the garbage in a well distributed manner, and the parts are so related that the flames and gases can always find a passage to the smoke-stack.

An incinerator adapted to receive and burn one to three bushels of garbage can be manufactured at very moderate expense, and such an incinerator is of moderate size.

In Fig. 1, a pilot-light 41 is shown for enabling the gas-grate to be lighted.

The foregoing detailed description has been given for clearness of understanding onl and no unnecessary limitations should be un erstood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

What I regard as new, and desire to secure by Letters Patent, is:

1. In combination, a fire-pot having at its lower end an unobstructed discharge-chute, and a gas-burning grate substantially housed in said chute and having centrally located trunnions'upon which the grate may turn in either direction, said grate having wings provided with sloping top surfaces, the lateral edges of said wings being so related to the walls of said chute as to maintain closure at one side while the other side is opened in the dumping operation.

2. The combination specified in claim 1, in which the gas-burning grate of said combination is of general rectangular plan and has a central longitudinal conduit at the ridge portion and parallel conduits in the wing portions communicating with said central conduit, said conduits having burner passages opening therefrom.

3. In combination, a fire-pot having its a lower portion provided with a dischargechute of general rectangular plan, and a gasburning grate of general rectangular plan substantially housed in said chute, said grate having a central ridge portion equipped with trunmons having wings provided with downwardly and outwardly sloping top surfaces, the lateral edge portions of said wings being adapted to maintain closure, said grate having conduits therein equipped with burner orifices and one of said trunnions having a passage therethrough for admitting a gaseous mixture to said conduits, bearings for said trunnions, and means connected with one of said trunnions for effecting rocking of the grate.

4. An incinerator comprising a casing; a gas-burning grate comprising a ridge portion and wing portions provided with conduits and burner orifices opening therefrom; trunnions extending from said ridge portion and journalled in said casing, one of said trunnions serving as a mixer-tube communicating with said conduits; means connected with one of said trunnions for rocking said grate; a fire-pot within said casing having its upper portion supported on and spaced from the casing, said fire-pot having a dischargechute co-operatively related to said grate; a drum mounted on the peripheral portion of said fire-pot and spaced from said casing; and a central flue having a spaced portion mounted in said fire-pot over the ridge portion of said grate, said flue having openings in its walls through which flames and gases may escape into the garbage.

5. An incinerator comprising a casing; a fire-pot mounted therein and having a discharge-chute of general rectangular plan; a drum rising from the peripheral portion of said fire-pot; a pivotally mounted gas-burning grate substantially housed in said discharge-chute, said grate having a ridge portion and wings so related to the walls of said chute that either wing may maintain closure when the other wing is swung downwardly to open said chute at one side; and a central flue mounted above said grate and having an elongated base-portion located over the ridge portion of said grate.

6. In combination in an incinerator, a firepot having a rectangular discharge-chute, a rocking-grate substantially housed in said chute and having a ridge portion equipped with trunnions and having wings co-operatively related to the walls of said chute; and a central flue having an elongated base portion mounted in said fire-pot above the ridge portion of said grate, said flue having a short axis transverse with respect to the axis of said grate.

7. An incinerator comprising a garbageburning chamber equipped at its lower end with a discharge-passage, and a single pivotally mounted gas-burning grate closing said passage, said grate having gas-conduits therein and burner-orifices opening therefrom and said grate having also centrally located trunnions projecting from and serving as the pivot about which the grate can be rocked, one of said trunnions beinghollow and serving as a mixer-tube and the other trunmon being equipped with means for efiecting rocking movement of the gas-burning grate, said gas-burning grate and passage being so constructed and arranged as to open the passage at one side and obstruct it at the other side when the grate is rocked from its normal position in either direction.

8. An incineratorcomprising a garbageburning chamber equipped at its lower end with a tire-pot having a constricted passage at its lower end, a central drier fixedly mounted in said burner-chamber and serving as a flue, said drier having an admission opening at its lower end and having outlet passages in its side walls, and a single gas-burning grate having an apex-portion equipped with trunnions and having outwardly and downwardly sloping ribbed top-walls flanking the a pex-portion, said grate being housed in said passage and having gas-conduits and burnerorifices opening from said conduits, some of said burner-orifices being located at the apex of the grate beneath the admission opening of said drier, one of said trunnions being hollow and serving as asmixer-tube communicating with the gas-conduits of the grate, and means for rocking said grate through the medium of one of its trunnions, said fire-pot passage being arranged to co-operate with the grate so as to permit havingthe grate serve to open the discharge-passage at one side of the trunnions and obstruct the passage at the other side of the trunnions when rocked in either direction to permit the contents of the lire-pot to be discharged. I

9. An incinerator comprising a garbageburning chamber having a fire-pot provided at its lower end with a discharge-passage having a peripheral wall, a central hollow drier supported in said burner-chamber above said discharge-passage, and a gas-burning grate within said discharge-passage and having trunnions extending through the walls thereof, said grate consisting of an apex-portion from which said trunnions rigidly project, and downwardly and outwardly sloping walls substantially bridging the space between said apex-portion and the wall of said passage, one of said trunnions being hollow and serving as a mixer-tube and said grate being providedwith a central-conduit communicating with said mixer-tube and with lateral conduits connnunicating with said central conduit and being provided with burner-orifices opening from said conduit.

10. An incinerator of the construction set forth in claim 9 in which the discharge-passage of the tire-pot is of substantially rectangular form and in which the gas-burning grate is of general rectangular plan and has the walls so flanking the apex-portion as to form downwardly and outwardly extending wings which substantially close the passage when the grate is in normal position, whereby one wing of the grate will maintain onehalf of the passage closed when the grate is rocked in either direction to throw one of the wings to a vertical depending position.

11. An incinerator comprising a garbageburning chamber provided at its bottom with a discharge-passage of general rectangular form, a gas-burning grate housed Within and normally closing said passage, said grate comprising a ridge-portion provided with a conduit and downwardly sloping wings provided with conduits communicating with said first-named conduit, said conduits having burner-orifices opening therefrom, trunnions forming extensions of the ridge-portion of the grate, one of said trunnions being tubular and serving as a mixer-chamber leading to said first-named conduit, means on the other trunnion for rocking thegrate, and pivotal supporting means for -said trunnions.

12. An incinerator comprising a garbageburning chamber provided at its lower end with a discharge passage of general rectangular shape, a cent-rally pivoted gas-burning grate mounted in said passage and having conduits therein and burner-orifices opening from said conduits, some of said burner-orifices being cent-rally disposed and others being disposed along the peripheral edge of the grate, means for admitting a combustible gas mixture to said conduits, means for r ckmg said grate, and a central'hollow drier supported in said garbage-burning chamber over the central burner-orifices and having ori fices through which the products of combustion may escape from the drier into the sur: rounding mass of garbage.-

13. An incinerator comprising an outer casing, a garbage-burning chamber mounted therein .and separated by a space from the wall .of said casing, said garbage-burning chamber comprising a fire-pot and 'a surmounting drum, said fire-pot'having downwardly convergent walls and a rectangular discharge-passage at the lower end of said convergent walls, a central drier supported in said fire-pot and having passages through which products of combustion may pass and escape into the surrounding garbage, asingle gas-burning grate mounted in said passage and comprising an apex-portion and wings extending outwardly and downwardly'therefrom, said grate having rigid trunnions extending from its apex-portion and journalled in the walls of said passage, one of said trunnions being hollow and extending through the wall of said casing and afl'ording a mixer-tube, and the other of said trunnions having an extension protruding through the opposite wall of said casing and equipped with means whereby the grate may be maintained in normal position or rocked about its trunnions, at will, said grate having a central conduit communicating with said mixer-tube and peripheral conduits communicating with said central conduit, said conduits having burner-orifices opening therefrom passage.

14. An incinerator of the construction setforth in claim 13, in which the drum of the into said garbage-binning chamber flares downwardly and outwardly and in which the top of the casing is equipped with an outlet flue which communicates with the interior of the drum and with the space between the drum and the casing.

15. A gas-burning grate for the purpose set forth comprising an apex-portion and wing-portions extending therefrom, said apex-portion having rigid trunnions prO ecting therefrom, one of said trunnions being hollow and serving as a mixer-tube, said grate having a central conduit in its apex portion and having peripheral conduits comnulnicating with said central conduit and having burner-orifices opening from said conduits.

16. A gas-burning grate of rectangular plan, comprising a central apex-portion and downwardly and outwardly extending wingportions, said grate having a central conduit and peripheral conduits communicating with the central conduit and having burner-orifices opening from said conduits, the apexportion of said grate having rigid trunnions projecting from the apex-portion, one of which trunnions serves as a mixer-tube and conununicates with said central conduits.

17. A gas-burning grate of the construction set forth in claim 16, in which the sloping upper walls of the wings are equipped with transverse ribs.

18. A gas-burning grate of the construction set forth in claim 16, in which the grate, including the central and peripheral conduits and including the trunnions, is of integralformation and the conduits are separated by spaces forming openings through the grate and have lmrner-orifices opening therefrom: and separately formed plates secured to said grate and having flanges guarding some of sai(lliurner-orifices.

19. A gas-burning grate of the construction set forth in claim 16, in which the grate is of integral formation and the wings are equipped on their upper surfaces with interrupted ribs, in combination with guard plates applied to said wings and having flanges corresponding with the interrupt-ed portions of said first named flanges.

20. In combination in an incinerator: a casing provided with a top having a smokepipe connection and a garbage-charging door: a fire-pot removahly supported in and spaced from said casing, said fire-pot having a slotted discharge-elude; a gas-burning grate forming a closure for said chute and having trunnions extending through the slots of said chute and journalled in said casing, one of said trunnions having a passage therethrough for admitting a gaseous mixture to the. interior of said grate; an inner drum removably mounted on the peripheral portion of said fire-pot and spaced from said casing; and a central flue removably mounted in and wholly supported by said fire-pot, said flue being provided with o )enings through its lateral walls to enable ames and gases to escape into the garbage.

21. An incinerator including a suitable fire pot, and an inverted V-shaped gas burning grate tiltably supported in the fire pot, the fire pot being so shaped and the sloping upper surface of the V being so positioned as to support refuse in the fire pot on an angle to the horizontal and permit dumping thereof by tilting the grate.

22. An incinerator including a suitable fire pot, and an inverted V-shaped gas burning grate tiltably supported in the fire pot, the sloping upper surface of the V-including sloping ribs between which the gas flame is projected, said ribs being positioned to support refuse in the fire pot on an angle to the iorizontal and permit dumping thereof by tilting the grate, and said fire pot being shaped to be normally closed by the grate but. to permit tilting dumping operation thereof.

23. An incinerator including a suitable fire pot, and an inverted V-shaped gas burning grate, the sloping upper surface of the V being positioned to support refuse in the fire pot 011 an angle to the horizontal and permit dumping thereof by tilting the grate, means for tiltably supporting said grate on a horizontal axis directly below the apex of the grate, said fire pot being shaped to be normally closed by the grate but to permit tilting umping operation thereof.

24:. In an incinerator, a fire pot having a grate opening in the bottom thereof, a single double throw gas burning grate pivotally tiltably supported at its center and positioned to normally fill the grate opening in the bottom of the fire pot, said grate being of inverted V shape with the refuse supporting surfaces sloping downwardly from each side of the center and so formed as to permit tilting the grate to lower one side to provide substantially a full (lumping opening while maintaining the other side sufliciently closed to prevent refuse from entering to interfere with the restoration of the grate to normal. and said fire pot grate opening being shaped to cooperate with the grate in manitaining one side of the grate opening closed when the other side is opened.

25. A gas burning grate for use with an incinerator comprising a rectangular casting of general V-shaped cross-section having trunnions. projecting from its apex-portion, said grate comprising connected conduits for receiving a gaseous mixture and having openings extending through the grate between said conduits and having gas-discharge orifices from the conduits near the peripheral edges of the grate and also at said openings.

26. A gas burning grate for use with an incinerator comprising a rectangular casting of general V cross section, with a plurality of openings through each side thereof, said casting formed hollow for the passage of gas through every portion of the grate, and with gas discharge orifices around the periphery of the grate and also around said openings.

27. A gas burning grate as set forth in claim 26 with a guard disposed on said casting and having a plurality of parallel up standing ribs of material to ing.

for preventing actual contact be burned With the grate cast- HERMAN KLEIN.

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