US1642076A - Distributor tube for stokers - Google Patents

Description

e 0 s pt 13 1927 N. M. LOWER E'r-Ai.

DISTRIBUTOR TUBE FOR STOKERS 2 Sheets-Sheet 1,

Filed March 13. 1922 Sept. 13,1927. 1,642,076

N. M. LOWER ET AL DISTRIBUTOR TUBE FOR STOKERS Filed March 13, 1922 2 Sheets-Sheet 2 Patented Sept. 13, 1927.

UNITED STATES PATENT OFFICE.

NATHAN I. LOWER AND ALBERT B. CHALXER, OF PITTSBURGH, PENNSYLVANIA, AS-

SIGNORS TO LOCOIOTIVEBTOKEB COMPANY, A CORPORATION OF PENNSYLVANIA.

msr'nren'ron Tuna ron sroxnns.

Application illed latch 18, 1928. 4Serial No. 543,329.

The invention relates to the distributor tube or nozzle through which coal is dis' charged into a {ire box and is articularly adapted for use and is illustratedJ in connec- I tion with a Stoker mechanism of the type :forming the subject matter of Letters Patent No. 1, 1,252 granted' to Nathan M. Lower March 15, 1921. As the invention ap rtains to the distributor, only so much o the t remainder of the stoker mechanism is shown as is necessary to indicate the relation of the parts. As the distributor tubes used in connection with the stokers of the t pe shown in the Lower patent project into the lire box l5 they are subjected to intense heat and are' consequentl short-lived.

One of t e objects of this invention is to provide a construction in which the parts of the distributor which are in danger of being burned ofi are removable, thus reducin the cost of replacement. A further object o the invention is to provide means for cooling the exposed parts, and thus lengthening their term of service, and a still further object is 26 to provide an improved form of baille or .abutment for arresting a portion of the impelled fuel and delivering it to the back end of the tire-box.

The invention consists of a structure such as is hereinafter described and is illustrated in the accompanying drawings, in which f.

Fig. 1 is a detail vertical section through the back head of alocomotive fire-box, showlng the improved distributor tube applied thereto, a fragment of the adjacent portions of the stoker mechanism being shown in ele-- vation;

i Fig. 2 is atransverse section of the distributcr tube on the line 2-2 of Fi 1;

Fig. 3 is a similar view on the e 3-3 of Fig 1;

Fig. 4 is a sectional detail on the line 4--4ofFig.1; l Fig. 5 is a plan view of the distributor; Fig. 6 is a central plan section of the'distributor and of the portion of the Stoker to V-whivch it is attached; l V j Fig. 7 is a central vertical longitudinal section of the distributor showing `a modified form of construction; and

Fig. 8 is a bottom plan view thereof. The stokers Yfor use with which the improved distributor tube is es' cially adapted have heretofore been u in connection with locomotives. There is shown at 10 a through the tube.A

of the back head l0. A deflector plate 15 t projects forwardlly over the top of the tube and is removab y secured thereto, being provided with a stem 16 having a socket for tting upon an upwardl projecting lu 17 on the top of the tube, the inner end o 'the stem 16 engaging under a lip 18 formed on the tube. As shown in Fig. 5 the delector plate 15 is relatively wide at its forward end and is reduced at its rear end to form the socket engaging stem 16.' In order to strengthen the late and prevent its outer end from ben ing downward under its weight and the intense heat of the Iirebox, the upper side of the plate 15 is provided with a reinforcing rib 150.

The bottom of the tube 13 is open and a plate 19 lits within this o eningt resting upon a bridge 20 integral wit the side walls o the tube, and extending across `its opening and having a pair of ugs 21 which engage in recesses in the margms of the tube wa ls thereby interlocking the plate with the tube walls and preventing its accidental displacement. The tube 13 is also provided with a bridge 22 at its rearward end connecting the margins of its side walls and the rear end of the plate 19 rests thereu on.

A stem 23 projects forwar y from the body of. the plate 19 of which it constitutes an integral part and at the forward end of this stem there is carried a cross bar 24, the len h of whichis substantiallyequal to the wi th of the lrate 19. The inner face of this bar is pre ably flat and projects somewhat above the plane of the upper surface of the plate 19, forming an abutment for arresting the lower stratum of coal impelled The stem 23 and abutment 24 are cored to v forma continuous passage therethrough, as

indicated at 25, 26, the passage 26 extending longitudinally throlgh the abutment and be in open at the en thereof.

27 there is `shown `the usual nipple extending through the floor of the elbow 12 and having a series of jet openings 28 .directed through the tube, the nipple 27 being adapted for the attachment thereto atits lower end of a steam pipe. A pipe or nipple 29 leads laterally from the nipple 27, below its jet openings, and terminates adjacent the rear end of the passage 25 through the stem 23, into which it discharges. The rear end of the stem 23 is flared, as indicated at 30, to permit the entry of air induced by the steam blast from the nipple 29. The air and steam passing through the passages 25 and .26 will tend to prevent the abutment and its supporting stem from becoming overheated, thus prolonging the life of the same.

The bridge 22 is channeled transversely, as shown at 31, to loosely receive the pipe or nipple 29.

Inasmuch as the tube and its bottom are not exposed to the, intense heat of the furnace it may be found desirable to form the bottom of the tube as an integral part thereof, providing only for the removal of the abutment.

This form of construction is illustrated in Figs. 7 and 8, the bottom 32 of the tube 13 being formed integral with its side walls. The abutment 24 is of the same form as shown in Fig. 1, but its stem 33 is not made integral with the bottom of the tube but is provided with a pair of lateral . shoulders 34, 35, adapted to rest upon a pair of lips 36. 37, formed on the bottom of the tube. The stem 33 is also rovided at its rearward end with a pair of ateral lugs 38` 39, which engage back of a pair of lugs 40, 41, formed on the bottom of the tube, and thus prevent the withdrawal of the stein. A second pair of lugs 42, 43, formed on the bottom of the tube, prevent the stem from being shoved in too far. In order to permit t e pipe 29 to extend well into the passage 25 and yet provide for the assembling of the parts, the upper wall of the stem 33 may be slotted at its rearward end indicated at 44.

In the operation of the device the fuel is discharged into the tube 13 from the elbow 12 and is projected forwardly through the tube by the steam issuin from the jet openings 28 and is scattare through the tube, some of it beingthrown upwardly against the plate 15 which deects it downwardly and scatters it over the central zone of the fire box` the plate 15 preventing the fuel from being thrown upwardly and into the boiler tubes; some of the fuel strikes the side walls of the tube and is thereby prevented from being too widely7 scattered some of it is rojected forwardly through the tube wit out encountering any of its walls and is carried well to the front end of the re box; and some of it is directed laterallv to the sides of the lire box, especially those portions that come in contact with the steam and air vissuing from the passage 26. The lower stratum of the fuel follows the bottom of the tube and encountering the upstanding abutment 24 is arrested and dropped upon the rearward end of the grate. Lumps of coal in the lower stratum which strike the abutment 24 below their centers of gravity bound over the abutment and fall upon the rate a little in front of it.

en under the influence of the intense heat of the furnace the abutment or its stem or the plate l5 become burned away or Warped, they may be readily replaced without detaching the tube 13 from the elbow 12. This detachability of the parts not only reduces the cost of replacement, but ermits the interchange of parts with the minimum expenditure of labor or delay to permit the entire cooling of the fire box.

While a preferred form of construction is shown and described, various changes of detail may be made without departing from the scope of the invention.

We claim as our invention:

1. A tubular fuel distributor for stokers havin a removable bottom, an abutment exten ing transversely to the forward end of the tube and extending above the plane of the bottom and being spaced forward from the front end thereof, and a stein connecting the abutment with the bottom.

2. A tubular fuel distributor for stokers having a removable bottom, an abutment extending transversely to the forward end of the tube and extending above the plane of the'bottom and being spaced forward from the front end thereof, and a stem connecting the abutment with the bottom, such stem and abutment having a continuous passage therethrough, and a pipe discharging into the rearward end of the passage.

3. A distributor tube for stokers having an open bottom and a bridge crossing the opening, a plate fitting within the opening and resting on the brid and having its rear end engaging said istributor tube, an abutment transverse to the length of the plate and spaced from the forward end thereof, and a stem connecting the late and abutment, such stem and abutment aving a continuous passage therethrough, and a pipe discharging into such passa 4. A distributing member inclieding a plate ada ted to form the bottom of a tubuar distri utor for a stolzer, mea-ns on the plate to interlock with the distributor, a

stem projecting forwardly from the end of the p ate and a fuel abutment on the stem spaced from the front end of the plate and etiding above the upper surface of the p a 5. A distributing member including a plate adapted to form the bottom of a distributor tube .for stokers, and having means for interlocking engagement therewith, a

fuel abutment spaced forwardly from the front end of the plate and extending above its upper surface and a narrow stem connecting the bar with the plate.

6. A distributor for stokers including a tube open at the bottom, a bridge extending across the open bottom, a plate resting on the brid e and interlocked with the tube, a fuel agutment in front of the plate and extending above itsr upper surface.,

7. A distributor for stokers including a tube o en at the bottom, a bridge connecting the si e walls of the tube at the bottom, a plate resting on the bridge and having lugs interlocked with the side walls and a fuel abutment in front of the plate and extending above its u per surface.

8. In a istributor for stakers, a tubular member adapted to be approximately horil zontally positioned in service, and having an open bottom and means-at its upper side adapted to interlock with a removable deflector, and a bridge crossing its open bottom alapted to support a removable bottom p ate.

9. In a distributor for'stokers, a tubular member adapted to be approximately horizontally positioned in service including a top having means adapted to interlock with a removable delector, side walls connected with the top and a bridge connecting the side walls adjacent to vtheir lower edges and adapted to support a removable bottom plate, the bottom of the tube being open except for said bridge.

10. In a mechanical stoker, the. combination of a substantially horizontal tube {iattened at the bottom, a stem extending forwardly from the bottom of the tube and a fuel abutment in the form of a cross bar carried by the stem spaced forwardly from and proyecting above the bottom of the tube the space between the cross bar and the bottom of the tube being open for coal to pass downwardly on each side of the stem.

11. In a mechanical Stoker, the combination of a substantially horizontal tube having a flattened detachable bottom, a jet for impelling coal throu h the tube, a stem integral wlth and projecting forwardly from the flattened bottom and a fuel abutment in the form of a cross bar carried by the stem, spaced from theforward end of and extending above the bottom, the space between the cross bar and the front end of thebottom being open for coal to pass downwardly on each side of the stem.

12. A fuel deflector member for use on the u per side of a distributor tube having a soc et and a projecting lug thereon, comprising a plate reduced in width at one end to engage said socket, and provided with a 'l socket for receiving said lug, the width of the forward portion of said plate being not less than the internal diameter of said tube, said plate being provided with a reinforcing rib on its u per surface for preventing bending of said plate when the same becomes heated while 1n use.

13. A fuel distributin member comprising a plate adapted to orm the bottom of a distributor tube for stokers, said plate terminating adjacent to the forward end of said tube when in position therein, and having means for lnterlocking engagement therewith, a fuel deilecting abutment spaced v forwardly from the front end of the plate and extending above its u per surface and means for connecting the a utment with the plate.

NATHAN M. LOWER. ALBERT R. CHALKER.

fuel abutment spaced forwardly from the front end of the plate and extending above its upper surface and a narrow stem connecting the bar with the plate.

6. A distributor for stokers including a tube open at the bottom, a bridge extending across the open bottom, a plate resting on the brid e and interlocked with the tube, a fuel a utment in front of the plate and extendin above its upper surface.

7. A istributor for stokers including a tube o en at the bottom, a bridge connecting the si e walls of the tube at the bottom, a plate resting on the bridge and having lugs interlocked with the side walls and a fuel abutment in front of the plate and extending above its u per surface.

8. In a istributor for stokers, a tubular member adapted to be approximately horizontally positioned in servlce, and having an open bottom and means at its upper side adapted to interlock with a removable detlector, and a bridge crossing its open bottom acllapted to support a removable bottom p ate.

9. In a distributor for stokers, a tubular member adapted to be approximately horizontally positioned in service including a top having means adapted to interlock with a removable deilector side walls connected with the top and a ridge connecting the side walls adjacent to their lower edges and adapted to support a. removable bottom plate, the bottom of the tube being open except for said bridge.

10. In a mechanical stoker, the combination of a substantially horizontal tube dat tened at the bottom, a stem extending forwardly from the bottom of the tube and a fuel abutment in the form of a cross bar carried b the stem spaced forwardly from and projecting above the bottom of the impelling coal through the tube, a stem 1ntegral with and projecting forwardly from the iattened bottom and a fuel abutment in the form of a cross bar carried by the stem, spaced from the forward end of and extending above the bottom, the space between the cross bar and the front end of the bottom being open for coal to pass downwardly on each side of the stem. V

12. A fuel Vdeflector member for use on the upper side of a distributor tube having a socket and a projecting lug thereon, comprising a plate reduced in width at one end to engage said socket, and provided with a socket for receiving said lug, the width of the forward portion of said plate being not less than the internal diameter of said tube, said plate being provided with a reinforcing rib on its u per surface for preventing bending of sai late when the same becomes heated while 1n use.

13. A fuel distributin ing a plate adapted to orm the bottom of a distributor tube for stokers, said plate terminating adjacent to the forward end of said tube when in position therein, and having means for interlocking engagement therewith, a fuel deilecting abutment spaced forwardly from the front end of the plate and extending above its u per surface, and means for connecting the a utment with the plate.

member compris- NATHAN M. LOWER. ALBERT R. CHALKER.

DI SCI-Al M E R 1,642,076.Nathan M. Lower and Albert R. Ghalker. Pittsburgh, Pa. DISTRIBUTOR TUBE ron S'roxmns. May 25, 1939, by the assignee,

Lettera Patent:V

[Oficial Gazette June 20, 1939.]

Patent dated September 13, 1927.

Disclaimer filed The Standard Stoker Company, Incorporar d Hereby enters this disclaimer to claims 1, 4, 5, 6, 7, 8, 9, 12, and 13 e of said DISCLAIMER 1,642,076.-Natll,an` M. Lower and Albert R. Ohalcer. Pittsburgh, Pa. DISTRIBUTOR TUBE Fon SToxEns. Patent dated September 13, 1927. Disclaimer tiled May 25, 1939, by the assignee, The Standard Stoker Company, Incorporated.

Hereby enters this disclaimer to claims l, 4, 5, 6, 7, 8, 9, 12, and 13 of said Letters Patent.

[oficial Gam June zo, 1939.]

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