US376371A - Sectional steam-boiler - Google Patents

Description

(No Model.) 2 Sheets-Sheet 2.

A. M. DIMMIGK & E. Z. SMITH. SEOTIONAL STEAM BOILER.

No. 376,371. Patented Jan. 10, 1888.

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ALBERT MELLVILLE DIMMIOK AND ELMER Z. SMITH, OF WILKES-BARBIE, PENNSYLVANIA.

.SECTIONAL STEAM-BO|LER.

SPECIFICATION forming part of Letters Patent No. 376,371, dated January 10, 1888.

Application filed April 6, 1887. Serial No. 233,922. (No model.)

To all? whom, it may concern:

Be it known that we, ALBERT MnLLvILLn DIMMIOK and ELMER Z. SMITH, citizens of the United States, residing at Wilkes-Barre,

in the county of Luzerne and State of Pennsylvania, have invented new and useful Improvements in Sectional Steam Boilers, of which the following is a specification.

Our invention relates to an improvement in [O sectional steam-boilers; and it consists in the peculiar construction and combination of devices, that will be more fully set forth hereinafter, and particularty pointed out in the claims.

In the drawings, Figure 1 is partly an elevetion and-partly a vertical longitudinal sectional view of a sectional steam-boiler embodying our improvements. Fig. 2 is an end elevation of the same. Fig. 3 is a vertical transverse sectional view taken on the line a; x of Fig. 1.

' A represents the setting, which is made of brick-work and forms the support for the boiler and the sides of the combustionchamher and ash-pit of the furnace. The side walls of the setting have their upper portions on their opposing inner sides flared or inclined outwardly, as shown in Fig. 3.

B represents apair of mud-drums which extend the whole length of the boiler and bear against the inclined portions of the side Walls of the setting. Each drum is provided at its upper side with an outwardly-extending lateral flange plate, 0, which bears upon the up- 5 per side of thebrickwall. It willbe observed by referring to Fig.3 that the muddrums are supportedin an inclined position,a'nd that the said mud-drums form the sides for the combustion-chamber.

o drums are Semicylindrical in shape and are provided at their ends with openings having caps D. The said caps project beyond the ends of the boiler and are screwed to the ends of the mud-drums, and are thereby made de- 5 tachable therefrom.

' The grate of the combustion-chamber is composed of a series of parallel grate bars, E-

The furnace is provided with a combustion chamber at each end, and each combustionchamber has grate-bars E. By forming a com- The lower sides of the I bustio n-chamber at each end of'the furnace steam can be more readily kept up in the boiler by feeding the fires alternately with fresh coal, thus keeping one fire blazing while the other has fresh coal put upon it.

F represents the series of headers of the boiler, which are equal in length to the muddrums and are secured upon the upper sides of the latter and communicate therewith through openings G. These headers are inclined toward each other, each being arranged at an angle opposite that in which its snpporting mud-drum is secured. The outer sides of the headers are formed of plates H, which are detachable and are secured in position by 6 5 means of bolts I. By removing the said bolts the plates I-I may be taken from the outer sides of the headers, and thereby access may be obtained to the interiors thereof.

K and L represent two series of tubes which connect the headers, together, the said series of tubes being inclined in opposite directions.

M represents a pair of water-drums, one of which is secured on the upper side of each series of headers. These water-drums commu- 5 nicate with the upper ends of the headers through openings N, and the ends of the Waterdrums project beyond the front and rear walls of the setting and are provided with removable screw-caps O, which permit access to be obtained to the interiors of the water-drums.

P represents a steam-drum which is similar in construction to the water-drums, but is larger in diameter than they, and is arranged above the water-drums and in avertical line midway between them.- Short inclined pipes R connect the water-drums to the steam-drum, and the ends of the latter project through the front and rear walls of the settingand are provided with removable screw-caps S.

T. represents a metallic plate which is secured to the front end of the frame. The said plate has an opening, U, through which fuel may be placed upon the fire, and a hinged X represents a safety-valve which is attached to the front end of one of the waterdrnms. The lever X of the said safety-valve is connected to the arm of the draft-regulator N by means ofa rod, Y.

Z represents a water-gage of usual construction, which is arranged on the front side of the boiler. The lower end of this water-gage communicates with one of the watendrums, and the upper end of the gage communicates with the steam-drum, as shown at Fig". 2.

A represents a smokepipe which communicates with the rear end of the furnace. In this smoke-pipe is pivoted a damper, B, the shaft or axis of which, at one end, is provided with an arm, f".

D represents a rod which is attached to the arm 0 and extends through and is connected with the leverarm Xof the safetywalre. By means of this construction the draft-regulator and the damper will be closed when the steampressnre is so great as to raise the lever-arm X of the safety-valve, draft automatically.

Z represents a shell which forms the sides and top of the boiler-ease and ohnnects the end walls of the setting, and has its lower edges resting upon the lateral flange-plates G of the mud'drums.

From the foregoing description it will he readily understood that by inclining the head ers toward each other and connecting them together by means of the series of tubes K and L, arranged in different inclinations, a constant circulation of water will he maintained throughout all parts of the boiler. Mud and sediment in the water enters the mud-drums and settles thereimand the latter may be cleared out from time to time, when necessary, by removing the caps D.

Particular stress is laid on the great freedom thus regulating; the

r tubes being arranged at different heights, as

tached to the upper sides of the mud'drums V and communicating therewith, the said headers being inclined toward each other, the 0ppositelydnelined series of tubes K and L, connecting the headers together, the waterdrums arranged above the headers and communicating therewith, and the steam-drum connected to and communicating with the waterdrums, substantially as described.

2. In a sectionalsteanrlioiler, the comhint tion of the mud-drums B, forming the sides of the combustionchamber, the series of headers F, attached to the drums and communicating therewith, and the oppositely-inclined series of tubes K L, connecting the headers, said set forth.

8. In a sectional steam-boiler. the combine tion of the side walls of the setting, the oppositely-inclined mud-drums 13, forming the sides of the combustionchamber and having the laterally-pro}eeting plates 0 at their upper sides bearing on the side walls of the setting, and the case 75, having its lower edges beai ing on the plates 0, substantially asdeserihed.

In testimony that we claim the foregoing as our own we have hereto affixed our sgnaturcs in presence of two witnesses.

ALBERT HELLVILLE DDUIICK. lllilllllt Z SMITH.

\Vitnessos:

E. \V. Knirn'runn, W. S. Parsons.

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