Патент USA US2116115код для вставки
May 3, 1938, ` W ` . ' w. T. HAÑNA _` - \ STOKER 12,116,115 ` Y Filed Deals, 1930 ‘ ` " _s Sheets-sheet 1 ` /y ~~` K ä ` ` ` \\\\\\\\\\\\\\\\\\\\\\\II j \ ‘ lNvENToR _ ‘ vWILLIAM THOMPSON HANNA` BY \ ` \ ` ( ATTORNEYS ¿um NL `__‘ ‘ \ »` May 3, 1938. 2,116,115 Y fw. T. HANNA STOKER Filed Dec. 13,"1930 s _sheets-sheet 2 - ATTORNEYS f 2,116,115 Patented May 3, 193s PATE-N1 N ,'UNl'riezo>> STATES " " 1' 2.116,1?15w i c c ` s'roxsn 1 William Thompson Hanna, Cincinnati, Ohio " ‘ " ffApplicatienpeœmber " " " feclaims. 1a_„§1s3o, (ci. 11o-„101)“` sensi Nu. stanzia receives fuel from a hopper conveyor (not shown) 1 customarily located beneath1 the 1 locomotive This invention relates to stokers in general and c "particularlysuch as may beused upon locomo tender...1 5 " vide a‘ stoker whicliis simpleand durable in con~ c struction and efficient in action. 1 ` 1. _1 t c 1 ‘1 " Rotatably mounted in the conduitl22 and suit ably _driven by ’mechanism „(not shown), ‘is a l 1 transfer conveyor 25 in the form of a spiral vane `1 ` tives `‘Oneand ofthe the `objects like. of ‘1 the 1 c `invention .c c is to pro ' or worm and `its forward‘end projects a substan This 1and other objects, general and particu v`lar,` will] bebest'seen byrefer'ence to the accom- ` 1 c panying drawings, in which:` c ` , 1 1 u l 10 Fig. 1 is alvertical axial section throughs.` stok tial distance into thegconduit 2i. The blade of `the conveyor` 25 has its forward end tapered for a distance substantially the extent of its pro- l0 jectionbeyond the end` of the conduit 22, and it c ing mechanism as shownmounted on fthe back 1 has been found in practice thatïthis assists in head ‘of a locomotive;` c 1 1 1‘ .c 1 1 1 Fig. 2 is atop‘plan vicewlpartly ‘1in section elevating the fuel into the fuel supplyhousing tion) showing fuel manipulating worms; 15 l, 1 Fig. 3 is` an enlargedjside elevationlpartly I1. t 1 _ Referring particularly to1Figs'. 1 and'2`, it will 15 seen that _within the housing Hand adjacent 1 in section)` of a tapered wormembodying the in- t be the `firing opening I6 there are mounted revolu vention;` 1 1 c 1 1 1_ ` c Fig. 4 is a detailed side elevation `of the worm 1 >shown in Fig. 3, illustrating diagrammatically the 20 double taper profile of the periphery of thespiral vane; and, l Y 1 c 1 ` Fig. 511is a1 partiallongitudinal sectional view blelmembers 53‘and 54. These members form fuel conditioning 4and handling rneans‘whlch act upon‘the fuel entering the housing `from the 20 conduit 22 to place the same inthe most advan ¿tageous conditlon‘for presentation to the fire and particularly ¿ to reduce any substantially ,of the worm shown in Fig. 3,1showing character solidified masses thereof `which may be formed l istics of the vane structure in relation to the ' 'as a resultV of coherence of the parts or particles 26 ‘12511h1ub portion.`1 ‘1 1c _ 1 ` Referring particularly to Fig. 1 of the draw.. 1 under pressure or` otherwise. ,Such meansalso to advance the conditioned fuel tothe " ings, the1stoker mechanism is shown in connec . serves distributing means in a manner‘to insure ef tion with the fire box"|4 of a locomotive in which thebusual back head i5~is provided with a fir 30 ingopening I6. Surrounding the firing opening fective action thereof. Thermernbers 53 and 5I, as shown, are in the form of spiral .worms or 30 supplyhousing- l1 having the‘usual hand-firing opening I8. Mounted upon the fuel supply hous vanes tapering toward their free forward ends. This taper may be made to vary in degree in different portions of the member as diagram utor plate 20; Steam pressures of different in tensities may be supplied to different portions length of the vane or blade. With this con and rigidly mounted on the back head is a fuel 1 ing l1 and positioned within the firing opening t maticaliy illustrated in Fig. 4. It will be seen that the taper in the forward portion is‘greater 35 35 I6 are suitable fuel distributing means includ ing,1 a multiple blast-chamber l! and a distrib-` than in the rear portion, the change in taper oc of the blast chamber i9. ` 40 The lowerportion of the‘housing I1 forms a ‘ fianged. `conduit section to which is rigidly at ' tached an extension conduit 2i, having its outer endarranged to form a universal bearing sup curring at a point substantially midway in the struction the fuel handling capacity of each worm, or screw, is materially increased at its 40 larger end. A sectional view of one of these Amembers is shown in Fig. 5 in which it will be evident that the rear face of the vane or blade port vfor the forward end of a transferconduit is substantially at a right angle to the axis of 45 22. This bearing "support is accomplished by rotation and the forward face is arranged at a 45 f means of apartial spherical `recess arranged in the end of the conduit 2l, in which is journaled a member 23 in theform of a section of a sphere rigidly secured to the transfer conduit 22 and 50 retained in position by a retaining ring 24 rig Y idly secured 1in any suitable manner to the end face of the conduit. The extension conduit 2i .is preferably substantially circular in cross-sec tion with an expanding cross-sectional area as it t5 approaches the firing opening. The conduit 22 substantial angle to the rear face. `'This forma- ` tion of the member has been found to` give very satisfactory results. \ Referring‘again particularly to Fig. 2, the fuel supply housing i1 has a portion 55 arranged in 50 the form of a, ledge over which the `fuel flows l ` as it is carried into the nrlng opening by the action‘of the members 53 and 54. Not only is it desirable-to provide a control for the volume of fuelpassing over the ledge 55, but it is also 55 2 2,116,115 advisable to have means for directing more or less volume toward the right side or toward the left side of the ñring opening as occasion re quires. This result may be accomplished in var ious ways, but I have here shown laterally ad justable members 55 and 51 slidably mounted in _the respective sides of housing I 'l and slidable over the ledge 55 and blast chamber I9. The members 55 and 51 are pivotally-connected to op 10 erating levers 58 and 59 by means of which the 'I‘he form and arrangement of the fuel-han dling and conditioning members 53 and 54 in sure efficient operation thereof and the passage of the fuel to the distributing means in the most advantageous manner and condition. The driving mechanism for the fuel-handling and condi tioning »members in the form shown is an as sembled unit. As many other embodiments may be made of lateral position of the said members may be the features of this invention without departing 10 controlled each independently. In this way, from the scope thereof, it is to be understood greater or lesser volume may be permitted to flow that all matter herein set forth or shown, is to be interpreted as illustrative and not in a lim over the said ledge and the quantities of fuel . iting sense. directed toward the right or left sides may be I claim: 15 varied. These adjustable members are prefer 1. In >a stoker mechanism, the combination ably arranged for adjustment in an angular di with a fire box having a fuel entrance, of a con rection relative to the edge of the ledge 55 as duit provided with means for moving fuel from shown clearly in Fig. 2. Power for the operation of the stoker may be a source of fuel supply to said entrance, the lower forward edge of said conduit providing a ledge 20 supplied by any suitable power device and trans mitted therefrom to the moving elements in any over which fuel ñows into said entrance, means convenient manner. ’ Referring to Figs. 1 and 3, the worms or fuel 25 handling members are driven from a worm 80 suitably driven by an en‘gine (not shown). The worm 8U, through suitable worm gears 84, drives shafts 85 and 55, which respectively drive the worms 53 and 54. -Referring to Fig. 3, the shaft 30 86 drives its worm 54 through lbevelled miter gears 89 and 90. Similar miter gears are pro vided for the worm 53. for distributing fuel fed to said entrance upon and over the fire, and fuel conditioning and reg ulating means comprising a rotary worm inter posed between said fuel moving means and said 25 distributing means and recessed in said conduit generally below and to the rear of said edge and f extending transversely of said conduit, for- trans forming the fuel into form relatively thinner than the bulk of the fuel in the conduit, said 30 worm being tapered and the taper of the larger part of said worm having a smaller angle of in clination than the taper of the smaller part. In the operation ofthe stoker mechanism, the conveyor 25 transfers fuel forwardly from 2. For use in a locomotive stoker having a 35 the locomotive tender (not shown) and delivers the coal into the fuel-supply housing I1, where, conduit extending to and embracing a firing due to the contour of this housing, the fuel is opening of a fire box, the lower forward edge presented to the fuel-handling or conditioning of said conduit forming a ledge over which fuel members 53 and 54. Further movement of the flows; a tapered fuel handling screw recessed in fuel is controlled by the action of these members said conduit generally below and to the rear of 53 and 54 and the fuel is thereby caused to pass said ledge and pointing from the side of said conduit toward the center thereof, said screw into the fire box, above the level of the fire, flow ing over the ledge 55 which extends across the having a single flight and the angle of incli firing opening. The fuel subsequently falls upon nation of the taper of said screw being greater and flows by gravity over the blast chamber I9 at the small end of the screw than at the larger and upon the distributing plate 20 from which end thereof whereby the fuel handling capacity it is scattered over >the fire by means of the at the larger end is materially increased. blasts of steam emitting from the jets of the blast WILLIAM THOMPSON HAN'NA. chamber. "