US694786A - Locomotive-boiler. - Google Patents

Description

No. 694,786.- Patented Mar. 4, i902.

s. s. BIEGEL' LUGDIIDTIVE BOILER.

(Application filed. Tune $4, 1901.) (No Model.) 2 Sheets-Shea! l.-

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No, 694,786. Patented Mar. 4, I902.

-8. S. RIEGEL.

LUGOMOTIVE BOILER.

(Application flied June 24, 1901.]

2 Sheets-Sheet 2.

(No Model.)

INVENTAOH WQITNESSES: a 2. 04 15W UNITED STATES.

SAMUEL STEWART RIEGEL,

PATENT OFFICE.

OF DUNKIRK, NEWV YORK.

LOCOMOTlYE-BOILER.

srnor'r'icarlon forming pm of Letters Patent No. 694,786, dated March 4, 1902.

Application filed June 24, 1901i Serial N0! 65, 859. (No model.)

T0 o whom it may concern:

Be it known. that I, SAMUEL'STEWART RIE- GEL, a citizen of the United States, residing in Dunkirk, New. York, have invented certain Improvements in Locomotive-Boilers, of which the following is a specification.

My invention relates to certain improvements in boilers, particularly of the locomotive type, generally known as the wide firebox boilers, though, it will be understood these improvements are not necessarily re-, stricted in their application to this class of boiler, but may be applied to all boilers whose fire-boxes are sufliciently large and which are or may be so constructed as to permit of their application.

The object of my invention is to so con-- struct locomotive-boilers of the various types in such a manner that the heating-surface may be greatly increased without the possibility of a corresponding increase in the dimensions of the boiler and that thereby evaporation is promoted by increasing the watercirculation where the heat is most intense, thus also preventing precipitates from forming scale, all of which virtues tend to greater efficiencies and economies in coal consumption and to an increase in the life of the boiler. These objects I attain in the manner herein illustrated and described, reference being had to the accompanying drawings, in which- Figure 1 is an elevation of a locomotive boiler of sufficient detailed construction to illustrate the manner of a general application of my improvements. Fig. 2 is a half crosss'ection through the fire-box and a half rear view of the boiler shown in Fig. 1. Fig.3 is a longitudinal section through the fire-box of a boiler, illustrating either of two forms of applications shown alsoin cross-sectionsin Figs. 4 and 5. Fig. 4. is a half cross-section and a half rear view of a boiler shown in Fig. 3. Fig. 5 is a half cross-sectionand a half rear view of a boiler shown in Fig. 3, showing another arrangement. Figs. 4 and 5 show the application of two arrangements as applied to boiler in Fig. 3. Fig. 6 shows a longitudinal section throughthe fire-box of another form of boiler, and Fig. 7 is a half cross-section and a half rear elevation of Fig. 6. To-

' space'for the combustion of the gases is materially the same, Several arrangements are shown in the various figures. These diderent arrangements are necessitated by the various types of boilers and by detailed features of construction. In Figs. 1 and 2 I have shown two nests of tubes arranged right and left, respectively, along the sides, passing from the lower end of the inner side sheetsb to the crown-sheet c, the side sheets 12 being drawn in and the crown-sheet c being dished to permit the tubes at to be made straight and of uniform length. It will be noticed that these tubes 0. are in the'fire-box A in the region of greatest heat and are entirely surrounded by burning gases. In Fig. 1 I have shown also the fines d as universally applied to boilers of this type to allow the gases to pass to smoke-box in the usual manner. The coal, oil, or any fuel desired is burned in the firebox, and the resulting gases surround thev tubes at in the fire-box and are burned there, from whence the hot gases pass through the fines d to the smoke-box and up the stack.

The water enters the lower ends of the wator-tubes a and being heated rapidly risest'hrough them and passes out at the top, thus producing rapid circulation and increased evaporation. In the arrangement in Figs. 3 and 4 the water enters pipes orinlets e and f to drums or cylinders g,placed right and left, respectively, thence it passes up'through the tubes as in the general manner. The inlets are applied in places best chosen to give most efficient results. In Figs. 5 and 3 the water passes through tubes arranged along the length of fire-box, as water grates h, to'a central drum 7' and thence up through tubes a, as before. In Figs. 6 and '7 I have shown too the application to a very. wide fire-box, and in Fig. 8 I have it applied to a moderatelywide but somewhat-longer fire-box.

In Figs. (5 and 7 the tubes at enter the lower ends of side sheets and come out at the crownsheet 0, as before described, and the circulation of the Water is as before; but in this design I have shown a new feature. The mudring 7c is made double along the sides, as shown in Fig. 7, to allow the tubes a to be readily removed and renewed by removing the plate Z, which is bolted to the under side of mud-ring 70. This also allows inspection of the tubes at when desired. The boiler in Fig. 7 has shown crown-bars m, which can be readily removed when it becomes necessary to tighten the ends of tubes a in the crownsheet 0, or they may be dispensed with entirely in many of the existing boiler shapes.

In Fig. 8 I have shown a shape of boiler which to all intents is most desirable and makes the most pleasant application. In it the tubes at enter the under side of the side sheets I) and pass through the fire-box to the crown 0; but the crown-sheet is not dished in this case, andthe tubes aare curved at their upper ends to enter the crown in the most favorable manner. The tubes 66 are shown straight at their lower endsin this figure, al though they may also be bent here, so that the side sheets need not be bent at all or bent but slightly, as is desired. At n, Fig. 8, is also a removable plate to allow access to the tubes, as in Fig. 7. The tubes are expanded at their ends or are fastened in the usual way common to boiler practices.

Arrangements shown in Figs. 1, 2, 6, 7, and 8 are preferably applicable to new boilers only, while arrangements shown in Figs. 3, 4, and 5 are applicable as well to boilers already in service as to new ones.

I claim as my invention- 1. The combination in a boiler structure of the locomotive type, of an external shell, a fire-box therein having a portion of its surface inclined, fire-tubes extending between the fire-box and the external shell, and a series of water-tubes on each side of a vertical plane through the long axis of the boiler, said tubes communicating with openings in various parts of the surface of the fire-box, said series of tubes being relatively near to one another at their upper portions and some distance apart at their lower portions,wherebya space is left for fuel and free combustion ofgases, substantially as described.

2. The combination in a boiler structure of the locomotive type, of a fire-box havinga portion of its lower surface inclined, a dished crown-sheet to the fire-box and inclined watertubes extending from openings in the dished portion of said crown-sheet to openings in the inclined surface of the lower part of the firebox, substantially as described.

3. The combination in a boiler structure of the locomotive type of a fire-box having the lower surface of its sides inclined inwardly, with series of water-tubes extending between the crown-sheet of the fire-box and the inclined surface of the sides, said series of tubes approaching near to each other at their upper portions and being relatively far apart at their lower portions, thereby leaving a space between them for fuel, substantially as described.

4. The combination of a boiler structure of the locomotive type, of a fire-box provided with a dished crown-sheet and having the lower surface of its sides inclined inwardly, with a series of water-tubes within the firebox extending betwecn and toward each other from each side thereof, said tubes beingconnected to the dished portion of the crownsheet, substantially as described.

5. The combination of a boiler of the locomotive type, a fire-box within the same having the lower portion of its sides inclined inwardly, water-tubes extending between the crown-sheet of the fire-box and the inclined portion of its sides, the lower portion of the sides of the boiler in the vicinity of the said fire-box being inclined inwardly and having an opening for the introduction and inspection of tubes, with means for closing the opening, substantially as described.

6. The combination of a boiler of the locomotive type, a fire-box within the same having the lower portion of its sides inclined inwardly, water-tubes extending between the crown-sheet of the fire-box and the inclined portion-of its sides, a mud-ring between the, lower edge of the boiler and the end of the inclined portion of the sides of the fire-box, the said ring being placed so that the tubes may be placed in position through the same, with means for closing the opening through the mud-ring, substantially as described.

7. The combination in a boiler structure of an external shell, a fire-box therein, fire-tubes extending between the fire-box and the external shell and a series of water-tubes on each side of a vertical plane through the long axis of the boiler, said tubes communicating with openings in various parts of the surface of the fire-box, said series of tubes being relatively near to one another at their upper portions and some distance apart at their lower portions, thereby leaving a space between them for fuel and free combustion of gases, substantially as described.

8. The combination in a boiler structure of the locomotive type of an external shell, a firebox therein, fire-tubes connecting the fire-box with the external shell, said fire-box having its crown-sheet depressed thereby forming a reservoir for water with tubes connecting said depressed portion of the crown-sheet with the sides of the fire-box, substantially as described.

9. The combination in a boiler of the locomotive type of an externaishell, a fire-box therein,fire-tubes eonneeting the fife-box with said shell, said fire-box ha'vin g the central portion ofits crown sheet depressed, thereby 5- bringing the same at a'lewef level than'the edges 7 thereof, and water-tubes extending" from the depressed'portion of said crown-sheet to the sides of the fire-box, ce rtai'n of said tubes v approaching relatively near to each other at their upper portions, substantially aside 16

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