US2061783A - Stoker mechanism - Google Patents

Description

C. J. SURDY ET AL STOKER MEGHANISM Nov. 24, 1936.

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STOKER MECHANISM Filed Dec. l2, 1934 2 SheebS-Sheefl 2 @i7 www ATTORN EY Patented Nov. 24, 1936 UNITED STATES STOKER MECHANISM Charles J. Surdy, Tuckahoe, and Edwin Archer Turner, New York, N. Y., assignors to The Standard Stoker Company,

Incorporated, a

corporation of Delaware Applicationv December 12, 1934, Serial No. '757,128 a claims. (c1. 19e- 15) Our invention relates to stoker mechanism of the type which is especially adaptable for service in transferring fuel from a tender to a locomotive rebox.

It is the principal object of our invention to provide in a stoker mechanism of the above type, a conveying system which` includes a conveyor mounted on the locomotive, a conveyor mounted on the tender, and an intermediate conveyor between the rst and second named conveyors, the intermediate conveyor being of unvarying length and at one end being flexibly related with one of said conveyors with which it has an unvarying longitudinal relation and having its opposite end offset and separated from the adjacent end of the other of said conveyors, such last named end of said intermediate conveyor being arranged for movement about horizontal and vertical axes and also for movement fore and aft with respect to the offset end of said adjacent conveyor.

A more specific object of our invention resides in the provision of the above described stoker mechanism and wherein the offset relation exists between the adjacent ends of the conveyor which is mounted on the tender and the intermediate conduit.

Further objects of. our invention include the general improvement upon stokers of the type described by reducing the number of parts, simplifying their construction and relation one'with another, and also the provision of a stoker mechanism wherein the transfer of fuel from the tender to the locomotive rebox is accomplished with a minimum degradation Vof the fuel. j

In the drawings which form a part of the specication,

Figure 1 is a vertical medial section thro-ugh adjacent portions of a Y locomotive and tender showing the Stoker mechanism of our invention in elevation with portions thereof broken away;

Figure 2 is a plan view taken on the line 2 2 of Figur-e 1, certain portions being removed or broken away;

Figures 3 and 4 are cross sectional views taken on the lines 3 3 and 4 4 of Figure 1;

Figure 5 is a sectional View taken on the irregular line 5 5 of Figure 3;

Figure 6 is a sectional view taken on the line 6 6 .of Figure l; and

Figure 7 is a sectional view taken on the line 1 1 of Figure 5.

On these drawings A is the locomotive, B the tender thereof and C a coupling member between the locomotive and tender. The locomotive A includes a boiler I having a rebox II into which fuel is supplied through an opening I2 in the backwall I3. At I4 is indicated thetank .of the tender and it is provided with a compartment I beneath the deck I6, the latter forming the bottom of the fuel bin I1,

The Stoker mechanism for transferring fuel from the bin Il to the rebox Ii is indicated generally by S and it includes a conveyor I8 rigidly mounted on the tender within the compartment i5, an inclined conveyor i9 rigidly mounted on the locomotive and an intermediate conveyor between the conveyors i8 and I9. Comprising the conveyor i8 is a trough-like conduit 2| having an upwardly opened mouth 22 which registers with an aperture E3 in the tender deck I6. This aperture is covered by plates 24 which are slidable to form an opening 25 in various longitudinal positions with respect to the fuel bin Il and through which opening the fuel falls into the conduit 2l upon a Conveyor screw 26 therein. The conveyor screw 26 urges the fuel forwardly and in cooperation with a toothed Crusher 2l reduces large lumps of fuel to a suitable size for eflicient firing. Smaller lumps need not be subjected to further degradation and they fallinto the intermediate conveyor I9 through slots 28 which are formed in the conduit 2| and arranged so that the `smaller fuel particles will fall therethrough prior to the action thereon of. the crusher'ZI. v

The intermediate conveyor 20 includes a conduit element 29 having a rearward end 30 which is disposed beneath the forward end of the troughlike conduit 2! to receive fuel therefrom, and a tubular portion 3|. At its forward end, the tubular portion 3l is provided with a spherical flange 32 which is received in a spherical seat 33 of an elevating conduit 34 of the inclined conveyor I9. A clamp 35 retains the spherical flange 32 in the seat 33 and these parts form a ball and socket joint 36 between the intermediate conduit element 29 and the elevator conduit 34. Within the tubular portion of the conduit element 29 is aA conveyor screw 3m extending the full length of the conduit and being connected to an elevating screw 34a by a joint kstructure 36a. At its rear-- most end, the conduit element 29, which is nonextensible and non-contractible in length, is provided with a pad or foot 3l having an arcuately shaped under side resting upon a seat 38 which may be formed in the frame 39 of the tender. The seat 38 is provided with an upwardly opening groove 40 extending longitudinally of the tender and in this groove is fitted a circular boss @I which is formed with the under side of the pad 3l.

Thus, when the locomotive and tender are rounding curves or passing switches and turntables, the intermediate conveyor 20 has, at all times, an unvarying longitudinal relation with the locomotive but a varying one with the tender. The rearward end of the intermediate conveyor pivots about an upstanding axis by reason of the boss 4I engaging the groove 40; rocking movement of the rearward end about a horizontal axis is provided by means of the arcuate under side of the pad or foot 31.

At times, foreign material in the fuel will become wedged between the flights of the conveyor `screw 26 and the teeth of the Crusher 21 whereby the entire Stoker mechanism is rendered inoperative. In order that the delivery of fuel into the rebox may be continued during these emergencies, we have arranged the conveyor screws of the stoker mechanism forward of the crusher in a manner whereby they may be operated independently of the conveyor screw 26 and also so that fuel from the bin I1 may be fed manually to the stolzer mechanism forward of the crusher.

To accomplish these ends, a drive mechanism is provided which includes a prime mover 42 for transmitting power through a shaft 43 to a gear train 44 in a housing 6U at the rear of the conveyor screw 25. The gear train 44 includes a pinion 45 which is driven by the shaft 43 and meshes with a gear 45. Gear 46 is freely mounted on a shaft 41 which is operatively connected to the conveyor screw 26 and also meshes with another gear 48 having a driving connection with the rearward end of the screw Sla by means of the telescopic shafting 49. The gear 46 is p-rovided at one side with clutch teeth 56 which are arranged to be engaged by teeth 5I of the clutch member 52, the latter being arranged for rotation with the shaft 41 and shdable therealong by the yoke 53.

During the normal operation of the stoker mechanism, the clutch member 52 is in a position whereby its teeth 5| engage the clutch teeth 50 of the gear 45 so that power may be transmitted to the shaft 41 for operating the conveyor screw 26. When the stoker mechanism becomes stalled because of foreign material lodging between the flights of the screw 26 and the crusher v 21, the clutch member 52 is moved to a position as shown in Figures 1 and 2 whereby the conveyor screw 25 is disconnected from its operative relation with the gear train 44. The gear train will then be free to operate the conveyor l screw 3 Ia and its universally connected screw 34a for delivering fuel to the distributing means 55.

Manual delivery of fuel into the operating portion of the stoker mechanism is effected by raising the hinged cover 56 in the tender deck I 6, moving the slidable plate 24 out of the way and then shovelling fuel into the upwardly opening mouth 38a of the conduit element 29 which mouth is directly beneath the hinged cover 56 and eX- tends to the rearward end of the conduit element 29.

It will be observed that the tubular portion 3| of the intermediate conduit element and the conveyor screw 3 Iar therein extends forwardly and upwardly toward the elevator conduit 34 from a point below and at one side of the axis of the conveyor screw 26. By this relation of parts, the conveyor screw 25 delivers fuel more directly to the conveyor sere-w Sla and at the same time the adjacent olfset ends of the conveyors I8 and 20 are positioned within the available space in the compartment I5 between the under side of the tender deck I6 and the frame 3S.

It will also be observed that the relation of the intermediate conveyor 20 with the conveyors I8 and I9 is a novel one employing fewer parts than heretofore possible and at the same time ample provision has been made to compensate for relative movement between the conveyors when the locomotive and tender are rounding curves or crossing switches and turntables.

We claim the following as new and useful.

1. In combination with an articulated locomotive and tender, the former having a rebox and the latter having a fuel bin, stoker mechanism for transferring fuel from the bin to the locomotive iirebox including a conveyor rigidly mounted on the locomotive and communicating with said rebox, a conveyor rigidly mounted on the tender to receive fuel from the bin and arranged to urge the fuel forwardly toward the locomotive rebox, an intermediate conveyor between the first and second named conveyors, said intermediate conveyor at one end being flexibly connected in end-to-end relation with the adjacent end of said first named conveyor and having an unvarying longitudinal relation with such conveyor, said intermediate conveyor at its opposite end being offset and separated from the adjacent end of the second named conveyor and having a varying longitudinal relation with such conveyor, the aforesaid opposite end of said intermediate conveyor being also arranged for movement about horizontal and vertical axes.

2. In combination with an articulated locomotive and tender, the former having a rebox and the latter having a fuel bin, stoker mechanism for transferring fuel from the bin to the locomotive firebox including a conveyor rigidly mounted on the locomotive and communicating with said rebox, a conveyor rigidly mounted on the tender to receive fuel from the bin and arranged to urge the fuel forwardly toward the locomotive firebox, an intermediate conveyor between the first and second named conveyors, said intermediate conveyor at one end being flexibly connected in end-to-end relation with the adjacent end of said first named conveyor and having an unvarying longitudinal relation with such conveyor, said intermediate conveyor at its opposite end being supported solely by said tender and being offset and separated from such .end of second named conveyor, the aforesaid opposite end of said intermediate conveyor being arranged for movement longitudinally of the tender and also for movement about horizontal and vertical axes.

3. In combination with an articulated loc0motive and tender, the former having a rebox and the latter having a fuel bin, stoker mechanism for transferring fuel from the bin to the locomotive firebox comprising a conduit mounted on the locomotive in communication with said rebox, a conduit mounted on the tender to receive fuel from said bin, an intermediate conduit of unvarying length between the rst and second named conduits, said intermediate conduit at its forward end being exibly connected in end to end relation with the first named conduit and having an unvarying longitudinal relation therewith, the rearward end of said intermediate conduit being mounted on the tender for movement about horizontal and vertical axes independent of and offset and separated from the adjacent end of the second named conduit and having a varying longitudinal relation therewith, and means in said conduit for advancing fuel therethrough.

CHARLES J. SURDY. E. ARCHER TURNER.

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