US347859A - John p - Google Patents

Description

(No Model.)

I J. F. & J. H. ALLEN SEOTIONAL BOILER. No. 347,859. Patented Aug. 24, 1886 Fag. 2/.

WITNESSES: l/VVE/VTOR .64.: 4'52 44) ATTORNEY ilNiTED STATES PATENT OFFICE.

JOHN F. ALLEN AND JOHN H. ALLEN, OF NEW YORK, N. Y.

SECTIONAL BOILER.

SPECIFICATION forming part of Letters Patent No. 347,859, dated August 24, 18 86.

' Application filed May 5, 1886. Serial No. 201,142. (No model.)

To aZZ whom it may concern.-

Be it known that we,-JOHN F. ALLEN and JOHN H. ALLEN, both of the city of New York, county and State of New York. have invented a new and Improved Sectional Boiler, of which the following specification is a full, clear, and exact description.

Our invention relates to sectional-tube boilers in which the violent circulation of water among the tubes is prevented; and the invention consists in the various elements of improvement hereinafter more fully pointed out.

In the accol'npanying drawings, Figure 1 is a side view of our improved boiler with the mason-work removed. Fig. 2 is an end view of the same.

The letters a a, &c., b b, &c., c c, &c., d d, &C., e e, &c., represent five superposed series of tubes, the tubes of each series being placed side by side and above the tubes forming the next series. All the tubes of each superposed series are connected at their upper ends by transverse drums A B CD E, as shown. Every vertical set of tubes or b c d ethat is, every set formed from one tube of each superposed series and placed above or below the tubes of the next series-are connected at their lower ends by communicating chambers a n 11. a n, as shown.. These chambers form aseries of vertical rows or headers, and all the upper chambers are again connected with each other by nipples, and thelower chambers are connected to a drum, 8, and in this way each chamber is in either direct or indirect communication with each of the other chambers, thus establishing communication between the lower ends of all the tubes.

t is a feed-pipe connected to one of the outer chambers of the top row, and s is a drum connected to the chambers of the bottom row, and provided with blow-off pipe P. The transverse drums A B O D E are connected through pipes A B O D t with asteam-drum, H, the ends of said pipes projecting some distance into said steam-drum to obtain some space in the lower part of the steam-drum for the collection of accumulated water.

:0 is apipe connecting the lower part of steamdrum H with one of the transverse drums E, to allow the accumulated water to return.

J is the steam-outlet pipe to conduct the generated steam to any part desired.

.from the vertical rows.

' as it rises.

The whole plant of pipes, drums, and chambers, with the exception of the steam-drum H, is placed in mason-work \V, in which the firegrate bars G are built. The gases and smoke escape at the rear end, as shown at K.

L L are openings closed by suitable doors, and located in the back and sidesof the walls, to gain admittance to the interior.

Instead of connecting feed-pipe t to the upper row of chambers, a drum, 2;, may be placed into the inside of the mason-work, as shown by dotted lines in Fig. 1. In this case the pipe 15 from the feed-pu mp is connected to the drum, and the drum is connected to the upper row of chambers. A suitable connection is in this case made between the top of the drum 1) and the'steam-drum H. The steam generated in the several tubes to b c (1 6 will escape from the upper ends of said tubes into their respective transverse drums A B C D E, and from there into the steam-drum H. The water is supplied to the tubes at their lower ends only through their chambers. At the upper ends of the tubes water-connections exist only between the tubes of each of the superposed rows, but no water-connections exist between the vertical rows, and thus the several superposed rows will be perfectly independent At the same time, as each row is supplied only from the lower end, the temperature of water at the lower ends of all the tubes below and at the back of the bridge-wall y will only be equal to the temperature of water as supplied by the feedpump or feed-drum 1;, while at the upper end of the tubes the temperature may rise to about 300 to 400 Fahrenheit. The water fed .into the tubes is in the exact proportion as it is converted into steam, and is gradually heated Thus, as the water in the uppermost row of tubes is least affected by the heat, it will generate the least amount of steam, and consequently the least quantity of water will be supplied to it. The other rows will evaporate and receive water in proportion to their greater or less vicinity to the fire. The waterlevel is supposed to be about in the center line of the pipes or drums A B G D E.

Iclaim as my invention 1. The combination, in a boiler, of the tubes arranged in a series of superposed rows, with chambers that establish a communication between all the tubes at their lower ends, and respectively, upper ends of tubes a a, b b, c c, 10 with drums that connect separately all the and with the pipes A B O, drum H, feedtubes of each superposed row at their upper pipe 1, drum 8, blow-01f pipe P, outlet-pipe J,

7 ends, while the several superposed rows are and grate-bar G, substantiallyas specified.

5 disconnected at such upper ends, substantially JOHN F. ALLEN. as specified. JOHN H. ALLEN.

2. The combination of tubes a a, b b, c c with Vitnesscs: I

chambers 01/ n", connecting lower ends of the HENRY E. ROEDER, tubes a b c, and with drums A B C, connecting, F. V. BRIEsEN.

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