USRE14548E - Feeding mechanism for gas producers - Google Patents

Description

C. W. LUMMiS. FEEDING MECHANISM FOR GAS PRODUCERS. APPLICATION FILED SEPT.28. 191s.

Reissued Nov. 12, 1918.

I'L'UG Ui'OU 3 Hades mz ummis.

3 .fiyqi'ovnev C. W. LUMMlS. mama MECHANISM FOR ms PRODUCERS.

APFLKCATION FILED SEPLZBI I918- Reismmd Na-v. I2, 1918. 14 548 a SHEETS-SHEET 3 Invcni'ov [/IwlahfLummw ooney hinilerml i nitetl Estates CHARLES W. LUIWZMIS. 0F VJORCESTER CONSTRUCTION COMPANY, OI \NORCESTER- O]? MASSACHUSETTS.

1VIASSACHUSETTS ASSIGNOR TO MORGAN MASSACI'IUSET'IS, A CORPORATION FEEDING MECHANISM FDR GAS-PRODUCERS.

Original No. 1270.963. dated July 2,

filed September lie it known that l, Cuiiuiris W. lioimis a eitixen ol' the United States. residing at \Yoreester, in the ountv ol' Worcester amt tonuuonwealth ol' hla's achuse'tts, have invented a new antl useful lmprovem'ent in a Fttf'tillltl' lileehauism tor (ias-lrmlueers, of whit-h the following together with the atcompanving drawings, is a spee i'ieation.

The present invention relates to a tailing meehaiiism tor g ns ljl'fltlllttl'fi antl has partieular reference to a met'hanism ol the above type tor nieehaniually suppl ving tuel to a prtalueerby the introduction oi sneees'sire intermittentrharges. the ineehanisni heing adjustable to vary the rate at which the eharges are introtlurml, antl also to vary the size ol' sani charges, in aeeortianee with the rate ol iamsuniption o? tut-l within the protlueer. v

The mechanism belongs to that type. of feeder which provides a movable tuel rel-t p tattle atlapteil, in one position to reeeive a e-harge ot t'uel from a ehute. hopper orother source of supply amt slt Wttpltntl Mit; tit.- liver such charge into the eomhu'stioii ehainher oi the protlueer. ()ne objeet ol my in- \ention, is to provitle an arrangement anti disposition of parts, whereby the operation of iieviees of this elass is improved. with respeet to obtaining the greatest possible t'reetloin of movement for the fuel reeeptaele anti, at the snare time. permitting its movement to take plat-e uinler eontlitions whieh eliminate the neressitv 'l'or (shearing through portions oi the charge of fuel in the operation of sealing the protlueer ehamher against the esrape of gas.

The present invention as regards the pro-- vision oi a tainstruetion atlaptetl to secure. the lore-going objects, partakes oi the print'iples of operation which eharaeterizo the inerhanisni shown and ileseribetl in my Letters A Patent h o 1,27-L1Tt), llsSllttl July 3U. lJlS; it (litters therefrom, however, in the provision of positively 11C,- ing tuel restraining (ievioes, in eonjunetion with the t'nel reoeptaele to insure the unsealing of the protlueer ehai'nher against; the est-ape. of gas. The essential features oi': the. present invention are forth in the following description, reference To 11/] whom Specifiaation of Beissneii Letters Patent. liq igs uefl NOV, 12, 1918,,

1918. Serial No. 55.551. filed October L915. Application for reissue Serial No. wmlafii being hail to the aeronipanying drawings, in whieh- Figure l is a seel'innal view of a gas protlllttl'. equipped with fuel feeding means eonstrnetetl aeeortling to this invention.

Fig. 2 is a eross seetional view throngh the "leetling uieelianisin in a plane at right angles to the seetion of Fig. .l.

Fig. is a seetional view of the feeding ineehanisin in the plane ot the line. 3-5, Fin. 1. i

Fig. ;i is an end view ot the. feeding mechanisni.

Fin. 5 is a detailed view of an actuating IUtl.

Fig. t3 is a t'raninentar} view of the (ll'lY- ing nieelianisni assoeiatetl with the feeding tltYit't.

Fig, 7 is a view similar to Fig. :1 motlifieation oi thenisni within the seope lion.

' Fig. h is a sectional vie v, in the plane of the line R t't Fig. 7.

Fig. it is another view similar to Fig. 2, showing still another motlitieation of a fuel feeding meehanism embodying my invens tron.

hike reference eharaeters reter parts in the tlitl'erent figures.

Referring to the aeeon'ipan ving drawings, the gas protlueer shown in Fig. 1 provides a. eombustion ehaniber l which is inelosetl by a stationary rover set'tion "l the latter being preferably water cooleih and having an opening 3 in its top. for the entrance 0 fuel. The opening 3 eoinnnpiicates with the interior oi a hollow water ('OOlBtl shell 4 superposed upon the top of the producer, aml providing For the support of the fuel ftltlllig nieehanism forming the subject matter oi this invention.

The saitl fuel teetlingr nieehanisin eonsists oi an open ended rusting or eratlle 5 providing a concave seat (3, from whit-h opens downwardly a liinsbagge,"I communieating, through the shell 4 and opening 3. with the tOllilRlStlOn chamber 1. Bolted to each liangetl end of the eraille 5 is a plate 8, the saitl plates 8 providing alinerl vertical re- 2, showing ,tuel l'eethnfl' met-haot the present invento like eesses for the reception of adjustable hearmg blocks 10, supported upon .set screws 11.

hearing blocks 10, LiQf-afiord journals for trunnions 1.4 14, which. proiec't from the endsof a cylindrical drum or receptacle .15. Thelatter is adapted to rotate in the cone cave seat. 6, between the end plates 8. 8. As

herein shown the circumferential extent of] morethan one hall the cironi'nference of the drum, therehygpermitting said drum and its trunnioiis to iiiove not only rotati vely hut. also away from said seating surface. Move ment away fron'i the seating surface is limited by means of adjustable set screws l3. 13, carried by plates 12, 12., which project nowardly from the plates 8, 8. These set screws 13 13, are adapted to heel" lightly against the appergende oi the blocks ll), 1U, when the drum is in operation. That is. the set screws 13, 18, are set up loosely when the feeding mechanism is cold; after ti pro ducer is Started, and the'parts have heated up and expanded in the normal operation, these set screws allow the drum to assume a position for free rotatii'e movement in the cradle, While the same time holding; it properly to its worlr. In the event of undue or unusual he ing; and expansion (iiif lii'llil drum, the set 5 rewe 13 13., may he still int ther slackened oil, will be readily under-- .stood. In other Wei-ole, these screws perform by their adjustahility, in ei'l oet, the same function a yielding Spring or a weight, except that. in practice the gailhm a better means of holding the dram to ite work and thus prevent, any accumulation o't far or dirt on the contact 3: rlaeee of the drum and cradle. Above this etleetive seating surface 6, which, as ahove stated. is disposed entirely helz'iw the of rotation thedi'llm. the cradleprov lee on one side a lip or extension 16 Iterniina time; ahoi'c the axis of rotation of l he drum; and out of contact with the drum, so that D does not. constitute part. of the seating rfaoe ai forded by the cradle. This extension lli serves to guide the toe], and prevent. its

vspilling outward from the drum. iii; hereinafter more particularly set forth.

A fuel spout 5.7 leading-5 "ltifona the hopper. or other source of fuel supply, has ses 'ieinled therefrom a trough or chute 18 the. loiigii tudinal axis oi. Whieh may he ineiinodfwilii respect. to the erpendieuilai; with lie livery end. dis pejised adjacent. the euriace of" 1 y the drum 1:) at one side of the axle thereot.

The flow of fuel from the spout 1? through the chute '18 against. the wall of the drum is controlled he a sliding gate ll which is adjustable up and down to vary the distance of its lower end :troin the the chute 18, and thereby to vary the etleetive fuel opening; ailiorded hy the delivery end of said chute. The adjustment of the gate 19 is determined by the position of: a transverse rod 2i), remm'ahly carried with .in'an upturned portion of the grate; there heing a of vertically spaced holes; 21 in the side Walls; ot said chute to receive the of mid rod. in this manner the area o? t'nel rooting" by gravity a -iinet the surface of the drum, and. supporting the column of fuel eontained Within the inclined minute 18 and the spout 1?. is varied.

The drum. 15 hes a. longitudinal opening 22 in its well; the cirmimferent-ial extent of this opening is; approxii'natel y' oneeixth the circumference oi the drain. It. will he seen than this opening iiiiiet. he oi lees Width than. the effective sealing eiiirtaeea ot the seat. 8 of the eradle on oppi "ite slides. ot' the pas. e i. since in the rot-Lion. of the drum, in toe direction of the communication liet- "eon its irit' iioie and the interior of the 'iri'idiicer om he rori'i iletely closed he tore the la iin gge oi. the opening arrives at. the deliveryend of the chute 18. in the same Way the rear ed .ie opening 232 must pass into ei'meot with the actual seating; surface ll hefo e the leading edge of i bottom of 7:59

will opening begins to uneover the paewe and enrich iiieane .01! veniently take the town .llll

it a tier; i hie a rd wli if the greater po tion on the. la e lamp peas iorwariil or witlmo entire let hoidi ng heel: .ieil. will allow 0 to damage to the IL dei" Till gmuz'dn-oaghoiii'r h :own in mid m hriieiiea a l having their ends iii p riphery of einpiiiiyed for the; purpose.

in ec'a 'niig contact against the the drain. are

ported by the cradle.

lit. necessary to 'tii'm'irle. in this connedtion. device-e for removing if and coal dust from the surface oi the drum and such deiiooe are hnihodied in wire hrueii'es 256 die poeed in z-uivanee oi the fuel retaining brushes :24. If desired. a scraper 7 pivoted on a rod eliateeding' lie-tween the plates w Kiley 123. at. the emis of irried upon a half 25 eiipbe cxn 'iloyed, with its free end we resting upon the surface of the drum. for the purpose of removing coal dust. and preventing the passage of small particles of coal which ma v have passed the l 1'\l b ll and 20. from being carried porting and scaling surfaces att'orded bv the cradle 5,

As a means for imparting rotation to the drum. one of the trunnions it carries a flanged disk 30. providing inner peripheral surfaces for engagement by a pair ot t'riction shoes 31. one only being shown. and an outer peripheral surface for engagement v a single friction shoe 3'2. Fig. (3. Said shoes 31 and are pivotally mounted on a bifurcated link 33 which extends inwardly from the lower end of a toggle lever 34 being pivotallv attached thereto at 35. The toggle lever 3% is carried on the free end of an rm 36 ot' a bell crank. jollrnaled on said ".rnnnion 14, the other arm 37 of said bell crank having a pivotal connection with a two-part horizontal connecting rod 39. pivotally attached at its other end to a rocking arm 3). The arm 39 is oscillated through the medium 01' an e centric it) and is provided with a series of holes 41. whereby the pivotal connection thereto of the rod 33 ma be changed, to vary the stroke of said rod. The reciprocation"of the rod 38 effects a stcp-by-step rotation of the drum through the action ofthe friction shoes 31 and the movement of the rod 38, to the left Fig. 1, causing said shoes to bind upon the flanges of the disk 30. thereby carrying the drum inthe direction of the arrow. Fig. 2. while. the movement of the rod 38 to the right carries the shoes 31 and 3-2 out of trictitmal contact with the rims of the disk, with the result that the drum remains stationary during such movement. The

.18 is constructed in such a manner that an undue resistance to the, rotation of the drum will enable said rod to become inetl'ective in rotating the drum until such resistance is removed. To this end the rod is made in telescopic sections 42 and 4?). one of which. 42, has pivoted thereto a weighted latch it l'Jroviding a shouldered cam surface 45 for engagement by a transversel v projecting pin -16 carried by the other section 43. Under normal conditions the thrust of the section 42 to the left of Figs, 1 and 4 is sustained by the pin 46, causingthe shoes 31 and 32 to operate in moving the drum in the manner above described; it. however, the resistance. to such movement exceeds a predeter-nined limit, the inc ined surface 4:5 rides upwardl': on the pin, lifting the latch 44 and moving the part 42 independently ot the part, 43. whereupon no motion in an operative disection is imparted to the bell crank lilo--36.

The inlermittent rotation of the drum 15, in tin. manner above described, provides onto the sup,

connecting rod.

for the isolation of charges of fuel therein. and th subsequent intrmlnction ot' thesame into the combustion chamber of the prodnccr. liach charge is usllnll less than the total capacitv ol' the drum: the size oi the charges may be varied by adjustment ot the gate li and the rate at which successive charges are introduced may be varied bv adjustment ot the stroke of rod ZlH. through its connection with arm Ill),

()hviouslv. the drum 15. instead of rolat' iug always in one direction. as shown. ma v have imparted thereto an oscillating movcment. to carr v its opening 22 altcrimtclv back and forth. into registrv with the end of the chute l5 and the passage, i. respectively.

It will be apparent that the adaptation of a fuel feeder (it the above t vpe to a gas producer. requiring at all times the maintenance ot' a seal against the escape of gas. involi cs a onstruction in which the rear edge 23 of opening 22 moves into sealing contact with the seat ll ot' cradle 5 hel orev the forward edge of said opening arrives at the. passage 7. in order to seal the producer chamber against the escape of gas. It is proper to sa v. thcrct'ore. that the arrival of the edge 23 at a plane where it makes sealing contact with the seat (3 ol' t ie c'adle fixes and determines a sealing edge for the 'lccder. in the operation of discharging the contents ot the receptacle into the producer chamber. In the same wa v. the arrival of said dge 33 at'a plane where it makes sealing the opposite side ally prevents the escape ol is from the pro ducer chamber. in the operation ol' moving the receptacle into position lo} receive a charge since said edge 2 must arrive upon the seat (i belorc the torward edge of open ing .22 passes oil the seal. it follows. theret'ore. that in conlining the etl'ective sealing surface of the cradle to not more than one half of the circmnl'erence ol' the drum, for the purpose heretofore set t'orlh. the maximum width of the openin 22 is limited to somewhat less than one sixth ol' the circumfereuceoi the drum. as clearly shown in 2. i i v I This sealing edge 23'. in the operation oi discharging the rta-eptaclc. being, located at or below the. horizontal plane containing the axis of rotation of the rtaeptacle. it is clear that. in the. absence of any restraining means for the fuel isolated within the drum, a spilling ot' tuel through the opening 22, as the latter approached the. vicinity of the sealing edge 23' would result. hloreoverg under. the condition above described, .the. rear edge 23 of said opening would be called upon to shear through the fuel, as the said edge approached its sealing position, cansto the moven'ient. oi

ing an undueresistance contact with the seat; i. on-

ot' the passage 7. cll cctu'.

2% w shown in F1."

a (Mm-Mai? Maj (m the V magma:

pixie or wizard 3? c H by 1: piqmteci Hh 5193 whim ffilfmmyas "WW1 H MR1 pin 5%, (sf 2;; cram :5 mm Ewe 4. 1M Emm math; ubuw the It in be um}? I i the tam: m5 smahngz M hemuafiw" 1154-261 mike an n a uni Mia aw-h uch semi as would 101w dude ihawnwa exerape of gas; from the mmabm um cimxnixw of flmin-nchwela and as mm M W m1 mad as lin'y'x'ting said filmmam n ratruvtwm 'gimma'hnpr a 61mm and an 0% n, s-aeuting surface.

Ew with respects to 11m;

1' the circuxrufeymme M? masts seating surface of itself conformsto these requirements; on the other hand. a cradle or support providing" a concave seat which is of greater radius than the drum. and embrac-es more than one half the circumfereni-e thereof, and which is enabled to make a substantially gas tight lit therewith by reason of the accumulation and deposit of tar. or the like, on said seat, is deemed to be fully Within the contemplation of the invention as affording a seating surface effective with respect to not more than one half the circumference of the drum.

The advantages accruing from such a seating surface will be apparent when it is remembered that no restraint is imposed on an initial lifting movement of the drum olf its seat, such as would be caused by expansion of thedrum, or by a coating of tar, or the like, on. its surface. On the other hand. if the effective seating surface cooperating with the drum to form a suostantially gas tight seal embraces more than one half of the circumference of the drum. it is impossible for the latter to move upwardly, and hence sticl ing and binding of the latter would inevitably take place under the conditions above enumerated.

I claim.

1. In a fuel feeding mechanism for gas producers, a rotatable charging member. a"

means for said member providing a seating surface therefor effective with respect to not more than one half the circumference of said member, whereby the free movement of said member away from said seating surface is pern'iitted, and means for restraining the escape of fuel from said member, beyond said seating surface.

'2. In a fuel feeding mechanism for gas producers, a rotatable member having a fuel discharge openii'i a supportii'ig means for said member pr viding a seating; surface therefor effective with respect to not more than one half the circumference of said. member, whereby the free moven'ient of said member away from said seating surface. is permitted, and means for preventing the supporti ng cap of fuel past vsaid discharge opening as the latter is moved. toward said seating surface by the rotation of the member.

3. In. a. fuel feeding mechanism for gas producers, a rotatablemember having a fuel discharge openingv a supporting means for said member providing a seating surface therefor effective with respect to not more than one half the circumference of said member, whereby the free movement of said member away from said seating surface is permitted, and means, above said seating surface. for preventing the escape a fuel past said discharge opening the latter is moved toward said seating surface by the rotation of the member.

4. In a fuel feeding mechanism for gas 'pi'oduccrs. a rotatable charging owiuber. and

a supportiup means therefor providing a concave seating surface etl'cctiv with respect to not more than one half the vircuu|lrrelico of'said lnouilu-r. wbercbv the tree movemeul of said member away from said seating sur face is permitted. and also providing an xtension from said seating urface in uoucontactin; relation to said member.

5. In a fuel feeding: mechanism for gas producers. a rotatable charging member. a supporting means therefor roviding a scaliug edge. said supporting means etl'ecl'ively embracinq not more than one half the cir cumference of said member. whereby free movement of said member away from said supporting means is permitted. and n ans for guiding: the fuel within said member past said sealing edge.

(3. In a fuel feet lingmechanism for gas producers. a rotatable charging member. a

supporting means therefor providiin: a. scab in}: edge, said su iportingr means efl't'ictively embracing not more than one half the circumference of said member. whereby free movement of said member away from said supporting means is permitted, and means above said sealing" edge for restraining: the outward movement of fuel from said member.

7. In a. fuel feeding mechanism for gas producers. a rotatable charging member having a fuel discharge opening. a, supporting means therefor providing a sealing edge. said supporting means e'llectivcl -v embracing not more than one half the circumferenfie of said member. whereby free movement of said member away from said vsupporting means is permitted. and means for preventing the, lodgment ol' l'nelbetween said edge, and the rear edge of said opening.

8. In a fuel 'l'ecdiug mechanism for gas producers, a rotatable charging member having a fuel. discharge opening a supporting means therefor providing a sealing edge. said supporting liit'lliiH ellcctively (lilhltltflllfl not more than one half the circuinference of said member. whereby free movemeutvol said member away from said supporting means is permitted, and means for constraining the fuel escaping through said opening to move past said sealing: edge.

S). In a fuel feeding mechanism for gas producers, a rotatable charging member hav-- ing a fuel discharge opening, a supporting means llieret'or providing a sealing edge, said supporting means effectively embracing not more than one, half the circumference of said member. whereby free movement of said member away front said supporting means is permitted, and an extension on said supporting means above said sealing edge and in noncontacting relation to said memher.

10. In a fuel feeding mechanism for gas face by the mention of "Lhe member.

pmdneei'm a rotatable member having a fine; disehm'ge spelling, SHKJPUWHIE means for said menihe" "meviding a seating surface thei'eifnr eii'ei. vs with nespect to net mean iLhMi nne imhi (he ciiimmfer 531 .29 (if said men'r new whereby free movement effsaid mendier awn fmm 'd seaming Slifft me is pemnitted, and means v; zthin aid members Jinx" gmeventthe eschgiae {if 17ml said discharge npening as the new waved toward said seating sin-Ease by the ifli'iiliifl'il of the meanhas" 1]... In s11. fuei feeding mechanism fer gas PlHTOdUUBZS irn'tmshie member having 9 fuei discharge opening, supporting means for said member pi'm'idingg a seating surface thereier eii'eetive Witl'l z'espeet m not were the: nine half the eircun'afei'ence said me1nbei' wherehv free n'wven'lentsf said member a v imwiy frnm sand seeming sm'iaee 1s permuted,

rind Weted means im: preventing the escape of pets; sand disehzwge GpBKM'Hgas the latter is moved inward smd. seating surface by the vanadium of the-.z ne1nnimrw 12 In a fuel feeding mecl mnism for gas producers, in rebatahle member'hzwing a fuei discharge speeding, a supporting meansfer said member providing; a. seating surizise thsreifm efifective with respect in nevmme than (me half the eircmnferenne 0f mein' her, whereby free movement; (if said member away from saidsemtingsurface is permitted, and yielding means for preventing the esof fuel said discharge opening as in 1mm is mn ved tewmz'd said sem 8m" snr-- 13. a fuel feeding; mechanism for gas predueei's, a mmmhle charging memnei', a

supporting mes ehereii'er pm'viding ii men Mme cave seating sm'ifacs, the sealing edge of said surface being disposed in ur'beiow the plane containing the ether edge of said surface' fuel between the edge of said seat and the rear edge of said opening, in the rotation of said member.

I ,115. in an fuel feedlng mechanlsm for gas pieducem, a rotatable charging member ha"- ing an opening., a supporting means for said niemhez' providing a concave seat having a passage in UK! producer chambepfgr registration with said opening, means fdr se regubing a charge of fuel in said Inem er, and means fer preventing the lodgment 'of fun between the edge of said seat and the rear ei'ige of said opening, in the rotation hi said. member, the member andv said seat a iceiinemting tn form substantially gns tight :zssu-l against the escape of gas from the, producer chamber in every position of said msmimr.

Dated ms eighteenth day of September, 19 1.53.

i CHARLES W. LUMMIS.

Witnesses:

Bmns B. Fen Len, NIELLIE .VVHALEN.

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