US2058255A - Stoker - Google Patents

Description

Oct. 20, 1936. wl c. PEY'roN Original Filed Sept. 13, 1927 INVNTOR.

Wdlam @Pylofz @www ATTORNEY.

Patented Oct. 20, 1936 STOKER William C. Peyton, New York, N. Y., assignor to The Standard Stoker Company, Incorporated,

a corporation of Delaware original application september 13, 1927, serial No. 219,210. Divided and this application August 18, 1933, Serial No. 685,677. In Canada June 20, 1933 3 Claims.

This invention relates to stokers for boilers of locomotives and the like. The general object of the invention is to provide feeding and elevating means for carrying the fuel at a lower conveyor level and then elevating it up to the redoor opening of the boiler on the outside and then deiiecting it through the redoor opening and distributing it over the re. More specically, the object of the invention is to. provide feeding and elevating mechanism which will leave the redoor opening area practically unrestricted and open for inspection and hand ring when desired.

A further object of the invention is to provide this feeding and elevating means in simple, durable form, conveniently and unobstructively 'placed and occupying a minimum of space.

Other objects of the invention particularly in the structure and combination of the various elements of the feeding, elevating and distributing mechanism will appear from the following description taken in connection with the accompanying drawing, in which Figure 1 is a vertical sectional view of thefeeding, elevating and distributing means illustrating one form of the invention applied to a locomotive boiler;

Figure 2 is a vertical view as seen from line 2-2 of Figure l; and

Figure 3 is a horizontal plan and sectional view taken approximately on the line 3-3 of Figure 1.

In the embodiment of the invention shown in the drawing, 1 is a locomotive frame; 8 the rear leg or backhead of the boiler rebox; 9 the grate and I the redoor opening, II being the locomotive cab deck. These parts are of conventional form and as is well known in the art the boiler at its forward end (not shown) is rigidly secured to the locomotive frame andat its rear end is supported upon the frame 1 by the plate 1a known in practice as the expansion plate' The conveyor section I5 is positioned in the entrance end of the expanding elbow I1 rigidly supported at I8 from the frame 1 and flanged at I9 to receive and support the vertical housing member |20 having at its upper end the distributor plate or guard ange |2| extending into the redoor opening I0, which is of generally oval formation as best shown in Figures 2 and 3 and which is of the usual size ordinarily, employed in boilers to which the coal is hand fired.

Surrounding the outer edge of the fire door opening is the rim member or flredoor frame |23 fastened in place in any desired manner on the rear surface of the boiler and hinged to the rim member at |25 are the sections |26, |21 of a two piece redoor forming in eiect a hood portion for the housing |20 and constituting as well a deecting elbow for the coal fed up through the housing. In closed position (Figure 1) the front edges |28 of these door sections rest against the rim member |23 and their lower edges contact the apron flange |29 of the vertical housing |20 so as to form a closed space of hood or elbow formation. The doors |26, |21 are held closed by the pivoted latches |30 and when released the doors may 'be swung fully open so that the redoor opening area is free and unobstructed for hand stoking or for inspection of the iirebox when desired.

In operation the line of fuel fed through the conduit I3 is received in the elbow |1 and maintained under substantial continuous upward pressure by the feed screw I5 forcing the column of coal upward through. the housing |20 so that it overows at the top and is deflectedl by the door elbow or hood formation over into the redoor opening and over the distributor plate or guard flange |2| onto the distributing table |3| It will be observed that the upwardly directed extensions at the opposite sides of the distributor plate or guard ange |2| constitute guard flanges to protect the rebox sheet from the abrasive action of the coal.

To distribute the coal over the surface of the re -a distributor head |32 with the steam nozzles |33 is provided tting the lower surface of the redoor opening and protruding inward from under the guard ilange |2|. Rear arms |34 of the distributing head extend outwardly on each 4 |23 and are so shaped as to t in between the surface of the opening I and the lower surface of the guard ange |2|. The rim member |23 and the distributor head structure form a com- Y plete circuit around the redoor opening and are stationary with the rear leg structure, the doors |26, |21 being carried by the rim as above described. The vertical housing |20 with its guard flange |2| is independently supported from the frame 'l and clearance is provided for expansion of the boiler which moves the rear fire leg relatively backward. During such expansion the guard flange |2| will protrude further into the redoor opening, the distributor head |32 being arched as indicated at |40 to permit this relative movement, and the door sec- `tions |26, |21 will move back slightly on the housing flange |20.

'I'he distributor plate |3| may be independent- 1y supported in place or may be bolted to lugs extending downward from the distributor head as indicated at MI.

In this construction the door elbow or hood formation deects the coal as it reaches the iir'edoor level and forces the coal into the flredoor opening to be distributed over the nre. Only a small space is occupied by the feed conduit directly behind the boiler and there is no substantial interference with hand stoking or inspection of the rebox when desired. The opening of the door sections exposes the entire vertical housing and the distributing aplimhls so that these parts are then readily accemible for inspection. It will be understood this feed conduit which is the form.- of an upstanding riser consists of divided upper and lower separable sections, the housing |20 and the elbow |1 forming the lower section and the upper section being formed by the elbow or hood formation oom- Vprising the rim member |23 and the door sections |26, |21. Preferably, the feed or riser conduit is disposed centrally on the vertical longitudinal median line of the ring opening i0.

Those familiar with the art will recognize that this invention provides a combined stoker feed conduit and redoor construction nicely adapted and larranged for use with the conventional size of boiler firing opening such as is in use for hand stoking and further that it is not necessary with this invention to enlarge the opening for stoker firing.

This application is a. division of my application filed September 13,-1927, Serial No. 219,210.

I claim:

1. The combination with a locomotive having a main frame and a boiler having a backhead with a iiring opening therein, mounted above the main frame and arranged with the backhead being capable'of movement longitudinally with respect to the main frame to accommodate expansion and contraction of the boiler, of a Stoker conduit disposed more nearly vertical than horizontal divided horizontally into separable upper and lower sections mounted for relative movement with respect to each other in a direction longitudinal of the locomotive as relative movement between said back head and frame occurs, the upper section communicating with the ring opening and being rigidly secured to the backhead and the lower section fixed. rigid with said main frame.

2. The combination with a locomotive having Y a mainframe and a boiler having a rear leg mounted above the main frame and arranged with the rear leg being capable of movement longitudinally with respect to the main frame to accommodate expansion and contraction of the boiler, of an upstanding stoker conduit divided into upper and lower separable sections mounted for relative movement with respect to each other in a direction longitudinal of the locomotive as relative movement between said rear leg and frame occurs, the upper section being fixed to said rear leg to move therewith and the lower.

section being xed rigidly with said main frame.

3. The combination with a locomotive havingA a main frame and a boiler having a rear leg mounted above the main frame and arranged with the rear leg being capable of movement longitudinally with respect to the main frame to accommodate expansion and contraction of the boil, of an upstanding stoker conduit di-v vided into upperl and lower separable sections mounted for relative movement with respect to each other in a direction longitudinal of the locomotive as relative movement between said rear leg and frame occurs, the upper` section being xed to said rear leg to move therewith and the lower section being xed rigidly with said main frame, and a distributor member carried by said upper section.

` -WILLIAM C. PEY'I'ON.

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