US934157A - Locomotive-boiler furnace. - Google Patents

Description

F. F. GA'INES.

LOCOMOTIVE BOILER. FURNACE. APPLICATION FILED APR. 10, 1909.

934, 1 57, Patented Sept. 14, 1909.

2 SHEETS-SHEET 1.

. WITNESSES V Q mv NT MYA WWW Y (if/4'24,

of Savannah, in the county of Chatham and following is a specification.

' tlons or in existing locomotive boilers,

-tion of the waist of a locomotive boiler, illustrating an application of my invention, and;

respects, of-a. construction known and ap- 7 one or more firing openings, 5, controlled by suitable doors, in the usual manner, and a an ash pan. is to be located, as in locomotive ATENT- FFIC FREDERICK r; Games, on SAVANNAH, earmark.

LOGOMOTIVE BOILER FURNACE.

Specification of Letters Patent. rat nt d S pt 14 1909 Application filed April 19, 1909. Serial No. 489,064.

To all wh0m it mag concern:

Be it known that I, FREDERICK F. GAINES,

State of Georgia, have invented a certain new and useful Improvement in Locomotive-- Boiler Furnaces, of which improvement the The object of my invention is to provide means, of ready and comparatively inexpens ve application either'in new construcwhereby the recognized advantages of a combustion chamber interposed between the grate and the fines, in the particulars ofeconomy of fuel and increase in the life of fines, may be made available at. a materially less cost than where a combustion chamber located Within the waist of the boiler is employed, as in ordinary practice, and a substantial reduction in the evolution of smoke from the stack bealso attainech The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is avertical longitudinal central section, through the firebox and the adjoining per-- Figs. 2 and 3, vertical transverse sections through the firebox, on the lines a a and b b, respectively, of Fig. 1.

My invention is herein exemplified as applied in a locomotive boiler which is, in other proved in present practice, having a wide firebox, 1, connected to a waist, 2, through which a plurality 'of fines, 3, extend from at the forward end of the waist. The rear set of grate bars, 6, of any preferred construction, is supported adjacent to the bottom of the firebox,"below which grate bars boilers of the various standard forms.

In the practice of my invention, I provide a vertical bridge wall, 7 of firebrick or other suitable refractory material, which extends entirely across the inside of the firebox, between the fiue sheet, f, and the rear water wall of the firebox, its top being ordinarily at a distance below the crown sheet cqual'to about one third the distance from the crown sheet to the bottom row of tubes,

and its bottom adjacent to the bottom of the firebox. The primary function of the bridge wall, 7, is to divide the space inside the firebox into a fire chamber, A, extending from the rear side of the bridge wall to the rear of the firebox, and a combustion chamber, B, extending from the front side of the bridge wall to the flue. sheet, 4:. Inasmuch as the proportions of relative volume of the fire chamber and combustion chamber will be governed by. several conditions, such, as the -a length of 97 inchesfor the fire chamber and 27% inches for the combustion chamber. It will, however, be obvious to those skilled in the art, that my invention is not limited -to these or any other fixed proportionate lengths of the chambers. I

The bridge wall is supported on a transverse bearer, 8, ;of substantially inverted U section, which is secured, at its ends, by bolts or other suitable connections, to the side portions ofthe mud ring, 1, of the firebox, and

has its side flanges projected upwardly above its web, so as to provide a seat for the lowest course of brick of the bridge wall and prevent its longitudinal displacement. Bearers (5 secured to the rear side of the bridge wall bearer, support the forward ends of the grate bars, 6,.and the rear ends of said bars are supported on bearers, 6 secured to the rear transverse portion of the mud ring, 1

A plurality of vertical air passages, 9, is formed in the bridge wall, 7, each of said passages terndinatin at its upper end, in an enlarged or flaring ischarge opening on the rear side of the bridge wall, near its top.

Air supply pipes, 9 which are secured in the bearer, .8, and form exterior cont1nua-, tions of the air passages, extend forwardly, by return bends, and are provided, at their forward ends, with flaring or funnel shaped mouth pieces, 9 The currents of air which enter the air.passages,.in the forward moveconnectionwith the air openingsfso as to furnish a suflicient 'volume of air, when the engine is standing still, to complete combus tion and eliminate'smoke. v

Objection has been found in practice with combustion chambers'formed in the waist of the boiler, in the particulars of the inevitable accumulation of a greater or less'qua'ntity of cinders therein, and the diflic'ulty experienced in removing them. If an opening is made for this purpose in the lower wall of the combustion chamber, liability to leakage, and

burning out of the rivets securing the j ointring, is experienced. In order toenable any accumulation of-cindersto be readily re: moved from the combustion chamber when ever desired, without involving the use of any members ointed to a water space, I close 'tively. Adischarg'e. hopper, 1 1, closedbya the lower end of the combustion chamber, B, by a bottom plate, 10, which is downwardly inclined from the -sides to the middle .of the combustion chamber, and is secured toand supported byangle irons, l and 8, boltedtothe front portion of the mud ring, v1",and to the front flange of-thebearer, 8, respecinovable slide or door, 11, is secured 'to the bottom plate, -10, below and around a central opening therein, and the bottom plate is. protected from the .heat of the cinders by a floor, 10*,fof firebrick or other refractory under the conditions of fuel and service; the

engine and entrance of an. operator'behind water spaces; and the supply of a volume of heated air to consume the gases in their passage from the fire chamber to the combustion chamber. 1

a I claim as my invention and desire to sc cure by Letters Patent: v 1.. The combination, with alocomotive and independent bearer extending across the firebox, near the bottom thereof. and

flue sheet, a mud ring, c0.m1ections securing the ends 'of said bearer to the :side

of the mud ring, a bridge wall of're actory material supported on said bearer, abottom' plate closing-the space between the bridge wall and the flue sheet,'a discharge hopper secured to the bottom plate below a central discharge openingqtherein, and a 'movable plate or slide closingthe discharge' hopperz '2. The combination, withj ,a locomotive the firebox, near" the bottomthereof and between the forward end of the'grate and the flue sheet,'a mud ring,'connect1ons securing the ends' of said bearer to the'side 4 ortions of the mud ring, a bridge wallof re ctory material supported on said beaten, a bottom wall and the tide sheet, a floor of refractory 'material covering said bottom plate and charge opening" therein a'dischargehop r, secured to. the'bottom;plate below said d;-

, closing the discharge hopper.

8. The combination, with a locomotive material; which is inclined, bothilaterawv ooiler firebox having a fiuesheet, of a sepas. and longitudinally, towardthe openi lg above the discharge hopper, so as to ,ause

whenever desired, by openingthe door or Among the advantages of my invention .which 'will'be apparent to those skilled in the construction, and operation of ;locomotives,-

are a the provision: of an effective combustion chamber, and the-capacity of carrying a suit able depth of fire in a shallow firebox,-without-involving the cost ofeonstruction' and maintenance of those-located within the waist of the boiler and above a bottom water space or wall, which latter necessitates a.

diminution of flue heating surface; the ability of application, at slight cost, to exlst ng locomotive boilers, particularly'where it-may' rate and independent bearer extending across the firebox, .near the bottom 1 thereof and between the forward end of the grate and the flue sheet, a mud ring, connections securing the ends of said bearer to the side 'ortionsof the mud ring, a bridge wall of re ractory -material'supported on said bearer, a bottom plate cl'osing'fthe space between the bridge 'cu1-ed' .tothe frontjand rear sides of said mudj ring and to the-bearer, respectivel 8.

below a central discharge opening therein,

:boiler firebox having a flue sheet, of a sepaprovided than is necessary or economical-- facility of removal of accumulations of cin .ders without requiring cooling down of the a the bridge, and without involving joints 1n boiler firebox. having a flue sheet, ofa separate e tween thev forwardendof the grate and the ortions.

boiler firebox having a flue sheet, of a sepaf rateand independent bearer extending across;

ioo plate closing the space betweenthe bridge downwardly inclined toward a central-discharge opening, and amovable: plate or slide I wall and the flue; sheet, angle supports sebottom plate and to the front portionof the discharge hopper secured to the bottom p ate a and a movable plate or slide closing'the.dis- 125 v 4. The comb nation, with a locomotive Y rate and independent bearer extending across 65 be found that a' larger grate area has been the,firebox, near the-bottom thereof and tween the forward end of the grate and the the ends of said bearer to the side ortions of the mud ring, a bridge wall of re ractory material supported on said bearer and containing. a plurality of Vertical air passages Which open on its reariside'nea'r its top, downwardly and forwardly extending air supply pipes secured to the bearer, each com- Inunica-ting with one of the air passages and being open at its forward.- end, a bottom plate closing the space between the bridge wall and the flue sheet, a discharge hopper secured to'the bottom plate below a central discharge opening therein, and a movable plate or slide closing the discharge hopper. 5. The combination, with a locomotive boiler firebox having a flue sheet, of'a separate and independent bearer extending across the firebox, near the bottom thereof, a mud ring, connections securing the ends ofsaid bearer to the side ortions of the mud ring, grate bars exten mg between said bearer and the rear of the firebox and adapted to be supported on said bearer and on the rear portion of the mud ring, a bridge-wallof refractory material supported on said bearer, a bottom plate closing the space between the bridge wall and the flue sheet, a dismovable hopper.

charge hopper secured to the bottonr plate I below a central discharge opening therein, and a movable charge hopper.

6. The combination, with a locomotive boiler firebox having a flue sheet, of. a separate and independent bearer extending across the firebox, near the bottom thereof, a mud ring, connections securing the ends of said bearer to the side portions of the mud ring, grate bars extendin between said bearer and the rear of the firebox, a bridge wall of refractory material supported on said bearer and forming a division between a fire chamber space above the grate bars and a combustion chamber space between its forward side and the flue sheet, said bridge wall containing' a plurality of air passages which open at their upper ends into the fire chamber space, and at their lower ends to the atmosphere, a bottom plate closing the bottom of the combustion chamber space, a discharge hopper secured to the bottom plate below a central discharge opening therein, and a plate or slide closing the discharge Witnesses:

' E. M. RHETT,

J .-R. KOERPER;

plate or slide closing the dis FREDERICK F. GAINES.

Images