US1886771A - Force feed stoker - Google Patents

Description

Nov. 8, 1932. M. l.. wENRlcl-l FORCE FEED STOKER Fi1ed`Feb. '26. 1929 INVENTOR BYarmlLL/Znfic A TTORNE Y Patented Nov. 8, 1932 UNITED STATES .PATENT- fOFP-IC MARTIN L.' WENRICH, OF ALTOONA, PENNSYLVANIA, ASSIGNOR T0 THE STANDARD sToxER COMPANY, INCORPORATED, A ooRPoRATIoN oF DELAWARE FORCE FEED sToKER Application led February 26,; 1929. `Serial No. 342,864.-

This invention relates to stokers, and more Y particularly to stoker mechanism for locomotives and the like.

One of the objects of the invention is the provision of new and improved stoker mechanism for delivering fuel through a plurality of openings in the back head of ya locomotive without the use of elevating mechanism within the elevator tubes or casings.

Another object of the invention is the provision of a new and improved locomotive stoker having a plurality of diverging elevator conduits so arranged that the fuel may be forced upward therethrough by the mechanism that transfers the fuel from the tender.

Other and further objects and advantages of the invention will appear from the following description taken in connection with the accompanying drawing7 in which Fig. 1 is an end elevation of a portion of a locomotive showing the fuel elevator casings in position thereon;

Fig. 2 is a section on line 2-2 of Fig. l;

' Fig. 3 is a section on broken' line 3--3 of Fig. 1.

On the drawing, the reference character 10 designates the backhead of a locomotive; 11 the rebox, 12 the fire door opening and 18 the cab floor or deck, all of which are of the usual or any approved construction.

In the construction of stokers, it is desirable that the number of moving parts be reduced to a minimum and the Weight of the device kept as low as is consistent with etlicient service. V

Stoker mechanism is provided for conveying fuel from the tender and supplying the same to the firebox of the locomotive. As usually constructed this mechanism comprises a screw conveyor and one or more screw elevators. The present invention contemplates the elimination of the elevator screws andthe shortening of the elevator casings thereby not only greatly reducing the weight of that part of the stoker mounted on the locomotive, but dispensing with all moving parts within the elevator casings.

In the .form of the device selected to illustrate one embodiment of the invention, two elevator casings are employed and fuel is Vbolt 26, tapped in the casing 18, is adapted to pivotallyconnected by a ball and socket joint connection 20 which permits a relative angular and telescopic movement between the elevator and conveyer casings in the usual manner. Each of the upper ends ofthe elevator casings is provided with a distributor tube 19 extending through an 'opening 21 .in the backhead 10 ofthe locomotive at the side of the fire door opening 12.v

Iny order that the fuel may be forced upward through the ` elevator casings 16 and 17 without an expenditure of too much power, these casings are made comparatively short, the openings 2 in the baclrhead being preferably located beflow the plane of the upper edge of the re door opening, and the bends in the same being on broad` curves.

`Suitable means are provided for kproperly ,dividing'the stream Vof fuel in. order that the required proportion may enter each lof the casings 16 and 17. As shown, a divider kor vane 22 is pivoted at its front edge in the chamber 18;v The pivot 23 is extended above the casing and is provided with an arm 24 having an arcuate slot 25 in which a stud or extend. When it is desired to adjust the `divider the bolt 26 is loosened, the proper .adjustment of the divider made, .and the bolt 26 `agenti-1 tightened for holding the parts in adjustedv position. j,

In the operation of the device, the fuel from the tender is moved along the conveyer casing and forced upwardly through the elevator casings by the conveyer screw 15. 'The fuel forced upward through the elevator casings passes into the distributor tube in front of the steam jets 27 which project the fuel into the Firebox 11.

It will be understood that various changes may be resorted to in the form, size, construc- 100 2 'gv i 1,886,771

tion, composition and arrangement of the several parts, without departing from the spirit and scope of my invention; hence I do not Wish to limit myself strictly to the structure herein set forth.

I claim as my invention:

l. In combination, a locomotive backhead provided with a iredoor opening and having two openings through the backhead spaced Y vapart horizontally at points below the upper' portion of the redoor opening, a horizontally disposed conveyer casing, a, .conveyer screw therein and terminating near the forward end of said casing, a chamber intowhich v said horizontal casing opens at its forward end and to which it is` connected, and a pair of short branch casings connected at their lower ends with said chamber and diverging upward and forward, the upper ends of said f branch casings curving forward and having extensions projecting respectively through said two openings in the backwall and the lower ends of said branch casings curving rearwardly to said chamber to form a gradually, curving continuation thereof, said screw constituting the sole means for advancing fuel through the named casings.

2. In combination, aY locomotive backliead provided with a firedoor opening and having two openings through the backhead spaced apart horizontally at points below the upper portion of the firedoor opening, a horizontal ly disposed conveyer casing, a conveyer screw therein and terminating near the forward end of said casing., a chamber into which said horizontal casing opens at its forward end and to which it is connected, a pair of short branch casings connected at their lower ends with said chamber and diverging upward and 40 forward, the upper ends of said'branch casings curved forward and having extensions projecting respectively through said two openings inthe backwall and the lower ends of said branch casings curving rearwardly to said chamber to form a gradually curving continuation thereof, said Screw constituting the sole means for advancing fuel through the named casings, and a guide vane arranged in said chamber in the general horizontal plane of said conveyer casing and settable at will to vary the ratio between the quantities of fuel delivered tothe upwardly extending branch casings.

In testimony whereof I aiiix my signature.

MARTIN L. WENRICII

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