US1825137A - Locomotive stoker - Google Patents

Description

p 1931- E. A. TURNER ET AL 1,825,137

LOCOMOTIV'E STQKER Filed July 18, 1927 3 Sheets-Sheet l R \N mm N ,3 mu m 3 C 1 3 .3 a By Sept. 29, 1931. E. A. TURNER ET AL LOCOMOTIVE STOKER Filed July 18, 1927 a Sheets-Sheet 2 Sept. 29, 1931. E. A. TURNER ET AL 1,825,137

LOCOMOTIVE ST OKER Filed July 18, 1927 3 Sheets-Sheet 3 [W4 Zia/mez- WW fwww' Patented Sept. 29, 1931 UNITED STATES PATENT] OFFICE EDWIN AR-CI-IER TURNER AND CHARLES J'. SURDY KOWSKI, OF PITTSBURGH, PENN- SYLVAN'IA, ASSIGNORS, BY MESNE' ASSIGNMENTS, TO THE STANDARD STOKER' COM PANY IN (3., OF NEW YORK, N. YL, A CORPORATION OF DELAWARE LOCOMOTIVE STOKER Application filed July 18, 1927. Serial No. 206,427.

This invention relates to locomotive stokcrs of the type wherein conveyors bring the coal from the tender to the locomotive and raise it to a suitable elevation for scattering over the grates, and has for its principal objects to simplify the structure, to reduce the number of parts, to reduce the distance the coal must be elevated and to provide a small compact organization that can be readily applied to locomotives, both old and new,.with a minimum of obstruction in the cab and which will endure the rigors of service. 7

Further objects and advantages of the invention will appear as the description is read in connection with the accompanying drawings illustrating the preferred embodiment of the invention, and in which Fig. 1 is a vertical section through the stoker and portions of the tender and the locomotive taken on the broken line 1-1 of Fig. 2;

Fig. 2 is a plan view of. the rear portion of the stoker and a section of the forward portion thereof and parts of the locomotive taken on the line 22 of Fig. 3; and

Fig, 3 is a rear elevation of the stoker and parts of the locomotive, the transfer conduit eing cut away on the line 3-3 of Fig. 1.

But this specific illustration and the cor respondingly specific description are used for the purpose of disclosure only and are not intended to support a narrow and limited construction of the claims.

Inits general organization the stoker includes a transfer conveyor, or tender unit generally indicated by A in Figs. 1 and 2, an elevating and distributing mechanism or locomotive unit generally indicated by 13,

- and a driving, mechanism generally indicatedby C. i q

A portion of the locomotive tender is in? dicated at 10, including a deck 11 provided.

with a slot 12 through which the fuel descends to the transfer conveyor under the control of a plurality of sliding plates 13 which may be shifted to make. the delivery from the tender at a point. suited to the conditions of the supply.

The rear end of the fire box of the locomotive is indicated at 14 equipped with grates 15, extending forwardly from a back. head 16 which has afiring opening 17. Proecting rearwardly from the back head is acab' 18 having a seat deck- 19. and a firing deck 20. y

The transfer conveyor or tender unit is composed of rear and forward portions which, while separable, are in fact, one continuous transfer conveyon.

The rear portion includes a trough 21: made fast beneath the deck on the tender in position to receive fuel throughthe slot 12:. and lyingsubstantially along the center. line of the tender. Mounted. within the trough, 1s a transfer. screw 22' extending lengthwise. and serving to move. the coal along the trough towards the locomotive and cooperating with acrusher bar. 23 toredi1ce large lumps to asize suitable for firing;

At its rear end the screw 22 is provided with a socket 241, polygonal in cross-section, which receives and cooperates with. a projection 25 of similar cross section on a stub shaft 26 which projects through the rear end 27 of the trough into agear casing. 28 and is equipped withv a gear 29 driven by a pinion 30 mounted in a lateral extension 31 l of the gear casing 28.

At. its front end the trough is equipped with a hollow coupling element 32, having a spherical portion 38, equipped with a flange 3e fixed to a similar flanged ring 35 having a. spherical portion 36 receiving a spherical portion87 ona coupling element 38., whereby a universal connection is. formed. q

The coupling element 38 forms a: part of the forward portion of the transfer conduit, which includes .alsoatube 39 fixed to theelement 38 by bolts 40 and having. its forward end slidably received in a conduit. section .41, having aisphericalring 422 at its forward end received in a. socket of like shape formed by a flange 43 on the base of the locomotive unit and a flanged ring 44. secured thereto, whereby .a universal connection is effected betweenthe forward end of the transfer conduit andithe locomotive unit.

The base of the locomotive unit is a substantially cylindrical casting having a bracket 46 on its forward side by which the base is made fast to the mud ring 47 of the back head 16. The flange d3 projects rearwardly from the base casting 45 and provides communication with the transfer conveyor, as just described.

. The upper portion of the base casting d5 terminates in a flanged nipple 48 upon which is bolted or otherwise secured a substantially cylindrical conduit 49, which extends along the back head substantially parallel to the upright center line of the locomotive. The cylindrical portion. of the base casting and the conduit 49 make up the elevator casing; and, in this instance where the back head is inclined forwardly, this casing is correspondingly inclined and extends along the back head at one side of the firing opening 17.

The fuel is raised in the elevator by an elevating screw 50 equipped at its lower end with a sealing ring or dust guard 51 and a stub shaft 52, which latter projects through the bot-tom 53 of the elevator casing into a gear housing 54;, where it is equipped with a beveled gear by which it is driven.

The elevator may deliver the coal at any suitable height, either to the hand firing door 17, or any other opening that may be desired. In this preferred embodiment the upper end of the conduit 49 is equipped with an elbow 56 which serves to turn the fuel laterally and downwardly into a delivery conduit 57 from which it drops on a ridge plate 58 and passes in more or separate streams to chutes 59 which direct it onto a distributor plate 60 from which it is scattered over the grates by jets of steam issuing from the nozzle box 61 which is supplied by pipes 88 (Fig. 2).

As shown, the upper end of the conduit 49 is equipped with a flange 62 to which a similar flange 63 on the elbow 56 is bolted. The other end of the elbow has a flange 64L bolted to acorresponding flange 65 on the delivery conduit 57. The lower end of the conduit 57 has a flange 66 bolted to a box 67 which, in turn, is secured to the back head 16 by bolts 68 passing through the flange 69 (Fig. 1). The front side of the box 67 is entirely open and the rear side is provided with an opening 70 corresponding to the hand firing opening 17.

The construction of the chutes 59; their mounting in the bOX 67, and their operation may be substantially the same as disclosed in the Hanna Patent No. 1,497,014 of June 10, 1914. In the interest of brevity particular description is omitted.

Power to drive the stoker is generated by a motor 71 (Fig. 2), preferably including a plurality of cylinders 72 and a crank shaft a shaft 78 mounted in the gear casing 54;

and carrying a beveled gear 79, meshing with the gear The shaft 78 also projects through the housing 54 and 1s equip- .ped with a crank 80 to furnish power for driving the mechanism for swinging the chutes 59.

O peratioa The fireman, by shifting the plates 1 will provide an ooening in the bottom of the tender at convenient point for the coal to descend by gravity into the trough 21. The screw 22 propels it along the trough, through the forward section of the conveyor 39, and delivers it directly against the elevating screw 50 with sulhcient pressure to facilitate its elevation by that screw and overcon'ie the tendency of the coal to rotate with the screw without rising.

The coal passes up the elevator into the elbow 56, turning laterally and downwardly through the delivery conduit 57 onto the ridge plate 58, which divides it into two streams, each of which is received by the corresponding chute 59 and passed onto the distributor plate (30. The chutes may be moved back and forth from left to right in unison, or otherwise, in the well. known manner to play the streams of coal on the (littributor plate, from which the steam jets scatter it over the grate.

By making the elevator extend parallel to a substantially vertical plane at one side of the firing opening, the distance necessary to raise the coal is reduced as compared w th an arrangement in which the elevator is inclined to a vertical plane.

It is also Within the contemplation of this invention that the coal may be delivered through an opening other than the hand firing opening, and distributed by any suitable means, such, for example, as the distributor tube disclosed in the patent to Lower, No. 1,455,058.

The lateral inclination of the forward por tion of the transfer conveyor in 'reases slightly the distance the fuel must travel from the tender to the elevator, but the re sistance is much less in a horizontal conveyor than in an elevator. and this slight increase of distance makes a negligible dif ference in the operation.

By mounting the engine in the intermediate position and driving the two conveyors by oppositely directed shafts connected to the combination of a substantially upright single elevator arranged at one side of the center line of the locomotive, and delivering to the firing opening, a transfer conduit for bringing fuel from the tender to the locomotive and including a rear portion located substantially along the center line of tender and a forward portion lying at an angle to the rear portion and extending L in a direct line from the forward end of the rear portion to the base of said elevator and delivering directly thereto, said forward portion being disposed laterally from and at an acute angle with a vertical plane through the center line of the tender, and means for advancing fuel through the conduit.

2. In a stoker for use and in combination with a locomotive including a backhead having a firing opening leading into the firebox and a tender behind the locomotive, a single elevator rising from a point at one side of the center line of the locomotive and extending along the backhead to a point adjacent to the firing opening and delivering thereto, and a transfer conveyor bringing fuel from the tender to the locomotive and including a roar section located substantially along the center line of the tender and a forward section for conveying fuel from the rearward section to the elevator and being universally jointed to each, and lying at an angle to the center line of the locomotive, an elevating screw in said elevator, an engine located alongside the transfer conveyor, a driving shaft operatively connected with the engine and operatively connected with the transfer conveyor at its rear end and a second driving shaft operatively connected with the engine, and gearing connecting the second driving shaft with the elevator screw.

3. In a stoker for use and in combination with locomotives including a back head having a firing opening leading into the fire box and a tender behind the locomotive, a singleelevator rising from a point at one side of the center line of the locomotive and extending along the back head substantially parallel to the vertical center line and delivering to the firing opening, a transfer conveyor bringing fuel from the tender to the locomotive and including a rear section located substantially along the center line of the tender and a forward section universally connected with the forward end of the rear section and the elevator and delivering thereto and lying at an angle to the center line of the locomotive, an elevating screw in said elevator, an engine located in a horizontal position alongside the transfer conveyor, a driving shaft extending rearwardly from the engine and operatively connected with the engine and with the transfer conveyor at its rear end and a'second driving shaft extending forward from the engine and operatively connecting the engine with the elevator screw.

4. In a stoker for use and in combination with a locomotive including a backhead having a firing opening leading into the firebox and a tender behind the locomotive, a single elevator rising from a point at one side of the center line of the locomotive and extending upright along the backhead substantially parallel to the vertical center line and closely adjacent to one side of the firing opening and at its upper portion opening inwardly at and delivering fuel to a side of the firing opening above the lower marginal edge thereof, a transfer conveyor bringing fuel from the tender to the locomotive and including a rear section located substantially along the center line of the tender and a forward section flexibly connected with the forward end of the rear section and the base of said elevator and delivering directly thereto, said forward section extending in a straight line from the forward end of the rear section to the base of said elevator and being disposed laterally from and at an acute angle with a vertical plane through the center line of the tender.

In witness whereof we afiix our signatures.

E. ARCHER TURNER. CHARLES J. SURDYKOWSKI.

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