US1916177A

US1916177A - Stoker mechanism

Info

Publication number: US1916177A
Application number: US591123A
Authority: US
Inventors: John W Myers
Original assignee: Standard Stoker Co
Current assignee: Standard Stoker Co
Priority date: 1932-02-05
Filing date: 1932-02-05
Publication date: 1933-06-27
Anticipated expiration: 1950-06-27

Description

June 27, 1933 J. W. MYERS STOKER MECHANISM 2 Sheets-Sheet 1 Filed Feb. 5, 1932 I N V EN TOR. Jfizz Vflyers June 27, 1933; J. w. MYERS STOKER MECHANISM Filed Feb. 5, 1932 v 2 Sheets-Sheet 2 IN V EN TOR.

Wow ATTORNEY.

Patented June 27, 1933 UNITED STATES PATENT orrics JOHN Wl MYERS, F RQANOKE, VIRGINIA, ASSIGNOE TO THE STANDARD STOKER COM- IEANY, INCORIPORATEID; A CORPORATION OF DELAWARE STOKER MECHANISM This invention relates to an improved form if of stoker construction particularly adapted for use in connection with a locomotive and its tender. v r

Stokers for conveying fuel from the tender to the locomotive commonly employ a plurality of conduits universally connected at their adjacent ends, one of said conduits being formed of telescopic sections providing for longitudinal movement between the locomotive and tender. A plurality-of. screws are mounted in said conduits universally connected at their adjacent ends at the universal joint between said conduits. In such constructions when longitudinal movement between the locomotive and tender occurred, the telescopic connectionin the conduits permitted them to be drawn apart or together I and since the sectional screw conveyor. was not adapted to be drawn apart or together, the universal connection betweenthe screw conveyors and the universal joint between the conduits were not permitted to remain in alignment. It is therefore an object of the present invention to provide in stokers of this type an improved construction and arrangement of parts whereby the universal connec-.

tion between the screw conveyors and the universal ointbetween the stoker conduits may be maintained in proper relation with each v other at all times.

his a further object of the invention. to provide such an arrangement and combination of conduits and screw conveyors in a stoker for a locomotive and tender which will permit easy andconvenient separation of the conveyors and conduits when the locomotive and tender are uncoupled and drawn apart. Further objects and advantages of the invention will appear from the following description taken in connection with the accompanying drawings, in which Figure 1 is a longitudinal, central, vertical section through the rearward portion of a.

locomotive and the forward portion of a tender, with a stoker in similar section applied thereto;

Figure 2 1s a sectional view ,on the line 22 of Figure 1; I

Figure 3 is a sectional'view on theline 33 ofFigure 1; t

Figure 4 is a view similar to that of Figure 1 showing a modified form of the invention;

Figure. 5 is a sectional view on the line 5-5 of Figure e; and

Figure 6 is a longitudinal, central, vertical sectional view showing a slightly modified form of the invention illustrated in Figure 4.

'In the drawings, the locomotive is rep- 27 resented generally by the letter A,.its tender by the letter B, the coupling member joining the locomotive and tender by C and the stoker by D. The locomotive is provided vided with the fuel bin 14 having a floor or deck 15 with a longitudinal centrally located aperture 16, and a plurality of slidably mounted plates 17 normally closing the aperture l6 and which may be moved from covering position to regulate the delivery of fuel from the bin 14. v i v Referringparticularly to the preferred form of the invention as illustrated in Figi ures 1, 2 and 3 there is movably mounted on the tender a rigid conduit section designated as a whole by the numeral 18 and, which includes the open mouth troughor rearward conduit portion 19, located below the fuel bin 14, the forwardly and .slightly upwardly inclined conduit or forward conduit portion 20 and the interposed spherical menib'er'2l rigidly secured to each other at their respective adjacent ends in any suitable manner, as for example, by means of bolts passing through flanges at the adjacent ends of the sections forming the conduit 18. The front wall 22' of the trough 19 is provided with a discharge opening 23. Mounted in the trough or rearward conduit portion 19 and extending forwardly through ther'opening 23 into the spherical member 21 is a conveyor screw 21 for advancing fuel therethrough. The screw 24 is driven from its rearward end through gearing 25 in the gear housing 26. A conveyor screw 27 isni'ounted in the forward conduit portion 20 and extends into the spherical member 21 wherelit 1 is connected with the forward end of the conveyor screw 24 by a universal joint 28.

The portion of the stoker mounted on the locomotive includes a conduit section 29 extending upwardly and forwardly through the locomotive cab deck 30 from a point therebelow to the lower portion of the firing opening 12. The conduit section 29 is rigidly mounted on the locomotive by suitable means, as by the bracket 31 supporting it from the mud ring 13. The cross sectional configuration of the conduit 29 progressively changes from adjacent its lower end where it is of substantially circular form to adjacent its upper end where it is of substantially rectangular form. The sidewalls of the conduit progressively diverge from adjacent the lower end of the latter to the upper end thereof while the forward and rearward walls of the conduitare substantially parallel throughout their entire lengths. The rear and side walls preferably extend upwardly beyond the front or forward wall of the conduit and terminate in substantially the same horizontal plane. The lower end of the conduit. section is provided with a spherical split flange 32.

Slidably mounted on the forward end of the conduit 20 and received in the spherical split flange 32 is a sleeve 33, the whole forur ing a ball joint 34 providing for universal and longitudinal movement between the conduits 29 and 18. To provide for vertical displace ment of the locomotive with respect to the tender and to further provide for relative movement between the loco-motive and tender in going around curves, the conduit 18 is 'mounted to rotate or pivot about a substantially vertical axis as well as to rock about a substantially horizontal transversely extending axis. For this purpose a bracket 35 is rigidly secured to the trough 19 about midway between its forward and rearward ends. The lower portion of the bracket 35 comprises a horizontally and transversely extending member 36 received in the angle members 37. The angle members 37 which extend forwardly and downwardly for attachment to an adjacent portion of the tender are supported adjacent the bracket 35 by substantially channel shaped members 38. The undersides of the end portions of the member 36 are preferably curved so that the bracket and conduit may rock about a transverselyextending horizontal axis.

. Interposed between the horizontal portions 39 of the angle members 37 and the channel members 38 is a transversely extending bar 40 which underlies and is adjacent to the member 36 of the bracket. The bar 40 and member 36 are provided with registering apertures for receiving a vertical pin 41 which, although it enables rotation or pivot ing of the conduit 18 about a vertical axis, prevents longitudinal movement thereof.

The outer ends of the member 36 are also curved so that when the bracket 35 and conduit 18 rotate about the pivot pin 41 sulficient clearance will be provided between them and the angle members 37.

Located at the upper end of the conduit section 29 and disposed in the firing opening 12 is the distributor head 44 and extending forwardly therefrom is the distributor plate 45. The forward wall of the distributor head 44 is provided with a series of jet openings 46 through which pressure fluid, as steam, is ejected for impelling fuel over the distributor plate 45. Pressure fluid is admitted to the distributor head 44 through any suitable number of supply pipes 47.

A conveyor screw 48 is mounted in the conduit section 29 and its extended shaft 49 is journaled in the bearing 50. The bearing 50 is located at the upper end of the conduit 29 and is secured from aewall of the conduit. The shaft 49 extends through the bearing 50 and carries a nut 51 at its upper end thereby preventing the screw 48 from slipping down in the conduit 29. At its lower end the conveyor screw 48 is universally connected with the forward end of the conveyor screw 27, as at 52, adjacent the ball joint 34.

As was previously explained the sleeve 33 slidably mounted on the forward end of the drawn apart or together to conform with 35 the movement of the conduit system and at the same time, maintaining the oints 28 and 52 in the conveyor screw system in coincidence with the spherical member 21 and ball joint 34 respectively.

To accomplish this result, the conveyor screw 27 is formed of telescopic sections 53 and 54. The screw section 53 has within its its hub or shaft 55 an opening 56 which extends v the entire length of the shaft and has a square configuration, as shown in Figure 3. The screw section 54 is provided at its forward end with an extension 57 which is received in the opening 56. In vertical cross section the extension 57 is square and just sufficient i:

play is permitted between the extension 57 and the opening 56 to permit relative longitudinal movement between the screw sections 53 and 54.

Above the upper end of the conduit 29 is i as an integral part of the conduit. Pivoted 5 doors 59 are provided for closing the rear of the casing 58 and constitutefin effect, a continuation of the rear wall of the conduit 29.

In Figures 4 and 5 is illustrated a modified'form of the invention in which there is provided a trough or rearward conduit portion 60 rigidly mounted on the tender. At the forward end of the trough 60 is located a ball casting 61, to which the forward conduit portion 62 is universally jointed. In the forward conduit portion 62, is mounted a conveyor screw 63 universally connected with the trough conveyor screw 64, the universal connection between the screws 63 and 6% being in coincidence with the universal joint between the conduit 62 and the trough 60. The conduit 62 is slidably and universally connected at its forward end with the riser conduit 65 in the same manner as in the preferred form of the invention providing for longitudinal movement between the locomotive and tender. In the riser conduit 65 is mounted a conveyor screw 66, the lower end of which is provided with a universal joint. The universal joint is also connected to a square shaft 67, which forms a slip oint when received in the recess 68 in the shaft of the screw 63, thereby providing for relative longitudinal movement in the conveyor screw system.

The extended shaft 69 of the conveyor screw 66 is j ournalled in the bearing 70. The bearing 70 is located at the upper end of the conduit 65 and is supported by the ribs or fins 71 projecting from the bottom wall of the conduit 65. The shaft 69 as in the preferred form of the invention carries a nut 72 to prevent downward movement of the screw in the riser conduit. It is well known that in conveying fuel through a tubular conduit by means of a screw,n1ore of it is conveyed along one side of the conduit than the other due to the tendency of the fuel to rotate or turn with the screw. The ribs or fins? 1 intercept a portion of the fuel which tends to rotate with the screw permitting the fuel to emerge from the conduit in a uniform stream. The forward end of the conveyor screw 66 is tapered, further minimizing the tendency of the fuel to turn with the screw and thereby aiding in'producing a uniform delivery of fuel from the forward end of the conduit 65.

The conduit 65 progressively changes in cross sectional configuration from a substantially circular form adjacent its lower end to a parabolic form adjacent its upper end. A rib 73 depends from the vertex of the parabolic end of the conduit 65, aiding in directing the fuel delivered from the conduit 65 uniformly to the fuel distributing means.

In Figure 6 is shown a slightly modified form of the invention in which the rib 7 3 is eliminated and the upper end of the riser conduit is somewhat flattened as at 74. This permits the firedoor to be applied closer to the boiler backhead as the casing? 5 can be made narrower.

I claim: I r

1. In a locomotive, provided with aback head having a'firing' opening therein, and

a tender, a fuel conduit'system including'a riser conduit fixed rigidly to said backhead and communicating with said firing opening, and a transfer conduit comprising a rearward conduit portion mountedon the tender to swing about vertical and trans verse axes and an upwardly inclined for-f portion, said conveyor screws being flexibly connected at their adjacent ends at the junction of said conduits, said fuel conveying system being fixed with the conduit system at its opposite ends, respectively, whereby the flexible connections in said conveying system are maintained in coincidence with the junctions in said conduit system, and the conveyor screw in said upwardly inclined forward conduit portion being formed by a plurality of telescopic sections.

2. In a stoker and a firebox having a firing opening, the combination of a fuel feeding conduit communicating with said opening, a conveyor screw in said conduit having a forwardly extended shaft, a bearing in said conduit receiving said forwardly extended shaft, and a plurality of longitudinally ex tending ribs projecting upwardly from the bottom wall of the conduit arranged to form a support for said bearin 3. In a stoker and a firebox having a firing opening, the combination of a fuel feeding conduit communicating with said firing opening, a screw conveyor in said conduit, a plurality of upstanding longiti'idinally extending ribs in said conduit at the discharge end thereof, said ribs converging towards their upper ends to form a bearing for said conveyor screw.

4. In a stoker and a firebox having a firing opening, the combination of a fuel feeding conduit communicating with said firing opening, a screw conveyor in said conduit, a plurality of upstanding longitudinally extending ribs in said conduit adjacent the discharge end thereof, a bearingfor said conveyor screw arranged to be supported by said ribs and a depending longitudinally extending rib in said conduit adjacent the discharge end thereof.

5. In a stoker and a firebox having a firiso adjacent the discharge end of said conduit receiving said extended shaft and a plural ity of longitudinal upstanding ribs in said conduit adjacent the discharge end thereof arranged to form a support for said bearlng.

In testimony whereof I affix my signature.

JOHN lV. MYERS.