USRE14098E - chapman - Google Patents

Description

W. B. CHAPMAN.

GAS PRODUCER.

APPLICATION FILED FEB. 29. 19KB- 1, Reissued Apr. 4, 1916. v 14,0953

2 SHEETSSHEET i.

- :0 19 I a 7f zz o J J! f V .43 J z w W. B. CHAPMAN.

GAS PRODUCER.

APPLICATION FILED FEB. 29. was.

3mm Apr. 4, 1916. I v14,098.

2 SHEETSSHEET 2.

UNITED STATES PATENT OFFICE.

2 WILLIAM CHAPMAN, O15 MOUNT VERhTON, OHIO, ASSIGNOR T0 CHAPMAN ENGINEER- ING GOMFANY, OF MOUNT VERNON, OHIO, A CORPORATION OF NEW YORK.

GAS-PRODUCER.

14.098. Original No. 1,162,452, dated November larities that are apt to interfere with an.

elfective operation of the gas producer. As is well known in the art, the maintenance of a uniform zone of combustion for aprotracted length of time is extremely difficult with .apparatus of the kind referred to owing to the high temperatureof said zone, to the varying nature of the fuel employed, to the varying height of the fuel bed and to other general conditions that are subject to variations during the regular operation of the gas producer and have heretofore required a continuous intelligent observation of the producer by the attendants.

The present mventionhas for'its purpose the continuous maintenance ofa fuel bed of proper composition and density. by means of a slowly rotating leveling and agitating device that automatically adapts itself to the varying heights of the fuel bed without in the least affecting its efficiency. I i

The invention furthermore comprises othcr novel features of construction as more ilfu-lly set forth in the appended specification and claims.

In the accompanying drawing, Figure 1 is a vertical section through a gas producer embodying my invention; Fig. 2 a plan {view partly in section thereof; Fig. 3 an enlarged cross section on line 3-3, Fig. 2; Fig. 4 a detailed section showing the means for supplying cooling water to the leveling tube, and Fi 5 adetail of the cleaning member for the annular producer slot.

My improvedgas producer comprises es-, scntiallya stationary lower section 10 and a likewise stationary upper section l l' separated by an intervening comparatively. nar-\ row circumferential slot 12 as clearly illus- 19, i fice 43 of gutter 29. As the stirring memtrated in Fig. 1, each of these sections 11 being composed of, a metallic shell 13,};

Specification of Reissued Letters Patent.

Rcissned Apr. 4, 1916.

the usual fire brick lining 14 and an inter mediate filling of loose non-conducting material. Below the preferably conical lower portion of section 10 is located the usual ash-pit 15 while the necessary air of combustion is admitted to the fuel charge through an inlet tube 16 which air .may be charged with steam, etc, through a branch pipe 17. At its upper end, section 11 is closed by a top 18-shown to be provided with poke holes 19 and a charging hopper 20 of convenient construction, Upper sec- 30, 1915, Serial No. 14,715. Applicationfor reissue filed-February n 2971916. Serial No. 81,215.

tion 11 is held in position by a plurality of arched brackets or braces 21 riveted or otherwise secured as at 22 to the metallic shells of the lower and upper sections 10, 11 of the gas producer;

The' upper end of section 10 is provided with an exterior-1y arranged'annular trough 23 containing water or another sealing liq uid into which dips an annular skirt or shield 21 depending from the upper producer section 11. Trough 23 is provided with an outw. 'dly extending flange 25 that constitutes the track for a plurality of rollers 2G journ aled in bearings 27 of brackets 28. The latter are attached to a rotatable annular gutter or channeled ring 29 loosely surrounding the shellof the gas producer and adapted to be supplied withwater through a-valve-controlled inlet pipe 30.

' g 29 is exterior-1y toothed as at 31 for the e gagement with a pinion 32 the shaft of which is rotatably mounted in bearings 33 of a standard 34. Pinion 32 is driven at a low rate of speed through a train of gears 35 from a suitable motor or other source of power. From ring 29 depends a pair of ad-' ditional brackets 36 provided with alined goose-necks 39. The outer leg'of one of the latter is provided with an overflow orifice 41 while the outer leg of. the other gooseneck is furnished with am upwardly extending funnel 42 located below an outlet ori- 1 her or tube 40 is freely suspended in bearings 37, this tube will have the tendency to assume a vertical position as illustrated 1n Fig. ,1. The lower cross web of the agitating tube is preferably composed of two stepped portions 4, 45 while its depending shanks 1 6 are of such a length that the cross web 6H, 45 will project, into the upper stratum of the fuel bed. the line 47 indicating the lowest level which the top of the fuel bedmay assume. It will thus be seen that when ring 29 together with the agitating tube 40 is slowly rotated through pinion 32, the stepped {cross web 4%, 45 which extends substantially across the entire width of the gas producer, will be partly pushed and partly dragged through the upper stratum of the fuel bed thereby leveling and compacting the same while simultaneously clos ing up any blow or fire holes that may have been formed during the operation of the gas producer. The slicing tube 40 furthermore constitutes a spreader for conveying the fuel from the point or points at which it drops upon the surfaceof the fuel bed to all other points of ,said surface, thereby uniformly distributing the'fuel. So also the tube L0 while being slowly moved through the fuel bed, breaks up its tendency to bake or cake thus effectively. preventing the formation of blow holes and precluding a clinkering of the fuel. When the top of the fire bed rises" (the highest level being indicated direction that the in the fuel'than the dragged through the by line 48) thetube 40 will become automatically swung upward to assume a more or less inclined position. In order to increase the gravity action of the tube 40, any mechanical means may be employed that tend to depress said tube into the fire bed,

the drawing showing an arm 49 firmlysattached to one of the trunnions 38, said arm carrying an adjustable weight 50. This weight tends to depress the tube 40 for a certain' depth into the upper stratum of the uel bed to produce the desired slicingand leveling operation and to uniformize the density of the fuel bed, thus insuring in turn a uniform generation of gas. Owing to the step provided int'he cross web of the tube 40 the equalizing action thereof is increased,

the tube being preferably rotated in such a portion of the tube which is being pushed ahead lies at less depth withother portion which is coal. I

It will be seen that my improved gas producer presents numerous advantages over the constructions heretofore generally known. The entire shell of the gas producer is stationary while the stirring tube only, is rotated thus economizing power. Owing to the peculiar support of said tube, the latter Will automatically adjust itself to any height of the fuel bed without impairing its efficiency. The relative arrangement between the top of the fuelbed, the annular slot 12 of the gas producer and the water seal for said slot prevents any clogging of said slot 7 and seal by particles of the fuel entering the same. i V

Although I prefer to provide a stationary shell and a rotary agitating tube, it should of course be understood that this relationmay be reversed, i. e. that the tube may be suspended from stationary bearings while the shell together with the fuel bed may be rotated without departing from the spirit of my invention.

The cooling of tube 40 is effected by the water discharged into gutter 29 through pipe 30 and flowing through orifice 43 into the funnel-shaped extension 42 whence the water will flowthrough tube 40 to be discharged through overflow' 41 into trough 23. The water overflowing from said trough may finally be led away in any suitable manner.

In order to keep slot 12 permanently clean, a sweeping or scraping member 51- is loosely mounted upon tube 40 while an axial displacement of said member on the tube is prevented by a pin 52 extendingoutward from said tube and engaging a corresponding slot 53 of said member. that during the rotation of the tube 40,

member 51 will return all solid particles It will be seen that may have become settled upon thebottom of slot 12 into the interior oh the producer, thereby preventing a clogging of the slot and water seal.

Although my invention has been described with reference to the particular embodiment thereof as illustrated inthe'draw-' mg, I desire it to be understood that I do not limit myself to the construction shown and described but that the same mayfbe varied in several ways.and may still come within the scope of the appended claims. The application on which this patent is sued was copending with my earlier filed" application 875,212 filed December'j3, 1914 the claims inwhich cover, in respect to the gasified and provided with a circumferential slot, and a rotary chargeagitating device extending through said slot mto the shell and constructed to automatically adjust itself to the height of said charge;

2. A gas producer comprising a station ary shell adapted to receive a charge to be gasified and provided with a circumferential slot, a liquid sealprovided for said slot,

and a rotary rhargeagitating device eur slot into the.

tending through said seal and shell and constructed to aQtomatically-adjust itself to the height of said charge.

shell, and means for rotating said member..-

5. A gas producer comprising a station ary shell adapted to recelve a charge to be 'gasified and ,provided with a circumferential slot, a U-shaped gravity-actuated charge-agitating member extending through said slot into the shell, and means for rotating said member.

(3. A gas producer comprising a stationary shell adapted to receive a charge to be gasified and provided with a circumferential slot, a U-shaped gravity-actuated charge agitating member extending through i said slot into the shell and having a stepped cross-web, and means for rotating said member.

7. A gas producer comprising a stationary shell adapted to receive a charge to be gasified and provided with a circumferential slot, a gravityactuated charge-agitab ing tube extending through said slot into the shell, means for interiorly cooling said tube, and means for rotating-the tube.

8. A gas producer comprising a stationary shell adapted to receivea charge to be gasified and provided with a circumferential slot, a liquid seal provided for said slot, a gravity-actuated hollow charge-agitating member extending through said seal and'slot into the shell, means'for interiorly cooling said member, and means for rotating said member.

9. A gas producer comprising a stationary shell adapted to receive acharge to be gasified and provided with a circumferenti'a-l slot, a ring constructed tojbe rotatable about said shell,'and acharge-agitating member pivot-ally suspended from said ring and extending through the slot into the shell.

10. A gas producer comprising a stationary shell adapted to receive a charge to be gasified and provided with a circumferential slot, aliquid seal provided for said slot, a ring-constructed to be rotatable about said shell, and a charge-agitating member pivotally suspended from said ring and extend ing through sa1d seal and slot into the shell.

11. A producer comprising a stationary shell adapted to receive a charge to be asified and provided with a circumfereni131 slot, a ring constructed to be rotatable to receive a charge to be gasificd and comprising a lower portion and an upper portion separated from each other by an intervening slot, a circular trough at the upper end of the lower shell-portion and adapted to contain a sealing liquid, a skirt extending from the upper shell-portion into the trough. a ring constructed to be rotatable about the shell, and a charge-agitating member pivotally suspended from said ring and extendmg into the shell through the space formed between the trough and the skirt.

13. A gas producer comprising a stationary substantially cylindrical shell adapted to receive a charge to be gasified and comprising a lower portion and an upper portion separated'from each other by an intervening slot, a circular trough at the upper end of the lower shell-portion and adapted tocontain a sealing liquid, a skirt extending from the upper shell-portion into the trough, a ring constructed to be rotatable about the shell, a pair of opposed brackets depending from said ring, goose-necks journaled in said brackets and straddling the skirt, and a charge-agitating member ex tending from the goose-necks through the tion separated from each other by an intervening slot, a circular trough at the upper end of the lower shell-portion and adapted to contain a sealing liquid, a skirt extending from th e,'upper shell-portion into the trough; a ring constructed to be rotatable about the shall, a pairof opposed brackets depending 'frdm said ring, goose-necks journaled in said brackets and straddling the skirt, a charge-agitating tube communicating with the interior-of the goose-necks and extending through the slot into the shell, and means for supplying a cooling liquid to one of said goose-necks.

15. A gas producer comprising a stationary substantially cylindrical shell adapted to receive a charge to be gasified and comprising a lower portion and an upper portion separated from each other by an intervening slot, a circular trough at the upper end of the lower shell-portion and adapted to contain a sealing liquid, a skirt extendtrough, a ring having ing from the upper shell-portion into the trough, a ring constructed to be rotatable about the shell, a pair of opposed brackets depending from said ring, goose-necks journaled in said brackets and straddling the skirt, a charge-agitating tube communicating with the interior of the goose-necks and extending through the slot into thev shell, means for supplying a cooling liquid to one of said goose-necks, and a liquiddischarge orifice provided on the other neck.

16. A gas producer comprising a stationary substantially cylindrical shelladapted to receive a charge to be gasified and comprising a lower portion and an upper portion separated from each other by an interyening slot, a circular trough at the upper end of the lower shell-porti0n and adapted to contain a sealing liquid, a skirt extending from the upper shell-portion into the trough, a circular track formed on said engaging said track, a charge-agitating member pivotally suspended fromsaid rin and extending into the shell through the trough and slot, and means for rotating the rm V 1 A gas producer comprising a statiorh ary shell gaslfied and provided with a circumferena plurality of rollers adapted to receive a. charge to be' tial slot, a rotary charge-agitating tube extending through said slot into the shell and constructed to automatically adjust itself to the height of said charge, means for passing a cooling medium through said tube, and a,

sweeping member loosely mounted on the tube and engagingthe slot-bottom.

18. A gas producer comprising a shell adapted to contain a fuel bed, a substan tially U-shaped charge-agitating member extending through said shell into the fuel bed and constructed to automatically adjust itself to the height of said bed, said member being composed of a pair of shanks of unequal length and a connecting crossweb, and means for effecting relative-rotary motion between said fuel bed and member.

19. A gas producer, the body of which is divided into two sections, a seal at the joint between the sections, an agitator with parts extending through said seal, the agitator playing freely vertically and means for causmg relative horizontal travel between the agitator and the charge.

ILLIAM B, CHAPMAN.

Witnesses:

ISAAC B. OWENS, PATRICK A. BOLGER.

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