US519285A

US519285A - Boiler

Info

Publication number: US519285A
Authority: US
Publication date: 1894-05-01
Anticipated expiration: 1911-05-01

Description

(No Model.) 3 Shee11'1s--Shee1J 1.

C. s. HQPKINS. BOILER.

1111. 519,285. I 1111611111111 May 1, 1894.

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THE NAnoNAL Lm-mennnma COMPANY,

WASHINGTON. n. c. y

(No Model.) 3 Sheets-Sheet 3. (LS. HOPKINS. BOILER.

No. 519,285. Patented May 1, 1894.

NITED STATES ATENT OFFICE.

CHARLES S. HOPKINS, OF ARLINGTON, NEW JERSEY, ASSIGNOR TO THE ELECTRIC BOILER COMPANY, OF ROCHESTER, NEW YORK.

BOILER.

SPECIFICATION forming part of Letters Patent No. 519,285,6lated May 1, 1894.

.ippiicain filed May 9,1893. serai No. 473,567.

To aZ'Z whom it may concern:

Be it known that I, CHARLEs S. HOPKINS, a

citizen of the United States, residing at Ar-4 to which it appertains to make and use the` built by arranging a group of vertical rows of pipes at the side of,`or on both sides of a single chamber or header. I have found by actual experlment, that by reason of the eX- treme welght of the boiler 4when so many pipes were connected into one header necessitated the useof considerable force to moveit, and the joints would invariably be strained In my invention each vertical row of pipes has aseparate stand pipe. Also, the pipes of the'dlfferent rows are arranged in pairs locatedon opposite sides of the headers, the top pipe o f a pair on one side of aheaderbe ing opposite or in line with the bottom pipe of a pair on the other side, and the top pipe of the last named pair being opposite or in line with the bottom pipe of another pair on the other side, andso on. In this way I find that forty per cent. better results for hot water are gotten than with the old plan. This is owing to the fact that in the.. old plan the force of the currents exhaust themselves in a large part by striking against each other, whereas in mine there is a continuous circulation, and the steam and hottest water are allowed to ascend to the top with the slightest possible friction.

To accomplish these objects my invention consists in certain details of construction and combinations of parts tobe hereinafter described and then particularly pointed out in the claims.

(No model.)

In the accompanying drawings: Figure 1 is a verticalsection through my improved boiler, and yits casing. Fig. 2 is a vertical section on line II-II, Fig. 1,looking toward the rear of the boiler. Fig. 3 is a vertical section on line III-III, Fig. 1, looking toward the irontof the boiler. Fig. 4 is a vertical section on line IV--IV, Fig. 1. Figs. 5, 6 and 7 are transverse sections on lines V-V, VI-VL and VII-VII, Figs. 1, and 4. i Fig. 8 is a detail View of the smoke-pipe.

`Referring now to said drawings, 1, indicates the casing of suitable material oi' my improved water-tube boiler, 2, the lire-box, 3, the grate, and 4 the ash-pit. The iire-box and ash-pit are provided with suitable doors, such as 5,

6 respectively. A partition wall 7 is located at the rearV of the ash-pit 4, and supports the central portions of the boiler. Vertical conduits or castings 8 are supported on the partition wall 7, and are of the shape in crosssection as shown in Figs 6 and 7, they being arranged closely together side by side, in such way as to form with the partition 7 a dividing wall between the front and rear portions of the boiler casing. .These conduits or castings I designate stand pipes and while they constitute with the partition 7 a dividing wall forming a front combustion chamber 9, and a rear combustion chamber 10, they end short of the top of the casing so as to leave a space 11, through which the products of combustion pass from the chamber 9 into the chamber 10. Each stand 8 pipe isprovided with internally screw-threaded bosses 12, having Haring counterbored extensions 12a, and arranged in zigzag form, see Figs. 4 to 7. Radiating from the stand pipes 8 are circulating

pipes

13,13, 14, 11, which are screwed into the bosses 12. These pipesare 15, and the zigzag arrangement of the bosses producesa staggered arrangementof thepipes,

see Figs. 2 and 3.

Connected with the lower end of each stand pipe is an inlet pipe 16, which leads from the supply header 17 located outside the casing. Above each stand pipe is an eduction Vpipe 18, extending from front to rear of the casing and connected at its frontend with a circulating pipe 14.". The rear ends of the eduction pipes 18 and of the circulating pipes 13b,

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are connected by suitable couplings with the short pipes 18, which lead to the Iiow header 19,1ocated outside the top of the casing 1. Each pipe 18 and stand pipe 8, are connected by short pipes 20, between which the products of combustion pass down into the chamber 10 and out through the smoke-pipe 21, located below the boiler. This smoke pipe 21 is provided with a cylindrical head 212, at its inner end, which has a longitudinal mouth or slot 2lb, adapted to be opened and closed by a swinging damper 21C, the curve of which is concentric with that of the head. The pivot 21d, of the damper constitutes the axis of the head 21a. The two series of paired circulating

pipes

13, 13*L and 14, 14, of each stand pipe 8, are so arranged that there are some of the pipes 13, 132, behind the fire-box, they being more numerous than

pipes

14, 14". The stand pipes 8 provide a Water-back to the irebox, (which latter is formed by leaving the lower front portions of the stand pipes plain,) and commencing the pipes 14, 14a, some distance upon the stand pipes, so that said pipes will be located entirely above the rebox. The

pipes

13, 132, 14, 145', are also so arranged that the upper pipe 13 ot each pair of pipes of the rear series excepting the lower pair, is located opposite and in line with the lower pipe 14, of each pair ot' pipes ofthe front series, and the upper pipe 14 of each pair of pipes of the front series is located opposite and in line with the upper pipe 132,01? the rear series, excepting the two lowerinost pipes 13, 13a. This arrangement is, therefore, such as that the stated upper pipes of the rear series discharge into the stand pipes 8 opposite the lower pipes of the front series, and vice Versa, so as to secure a continuous circulation. The circulation throughout the boiler is as indicated by the arrows. Each central stand pipe 8, with its complement ot pipes, forms one complete section. Any number of sections may be placed side by side and connected with the supply. or header 17, and low header 19.

By varying the number of sections and the lengths of the pipes screwed into the stand pipes, a great many sizes of boilers may be obtained, with only one size for each stand pipe. The flared counterbored extension 12,

of the bosses 12 readily admit the ends of the.

pipes

13, 13, 14,14, so that they may be screwed into the bosses with ease and rapidity. The ame and products of combustion pass between the pipes and keep the water very hot, and to properly distribute the

heat bafiie plates

22, 23, 24 are let into the casing of the boiler, thus causing the products of combustion to take a course near the front and back at the top, and farther inward at the bottom of the rear chamber IO.

I/Vhen the boiler is used for steamheating I run drip pipes 25 from the short pipes 18a, to the inlet pipes 16.

Having thus described myvinvention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. The combination with the lire-box, ofthe series of stand-pipes conjunctively forming a water-back for the fire-box, a front series of circulating pipes connected with the said series of stand-pipes and located above the firebox, a rear series of circulating pipes also connected with said series of stand-pipes, lower supply pipes connected to said stand-pipes and upper eduction pipes extending f roin front to rear of the casing and communicating with each stand pipe, and a smoke-pipe whereby the products of combustion are permitted to pass up through the spaces between the front circulating pipes over the series of stand-pipes, down through the space between the rear circulating pipes, and out through the smoke pipe, substantially as set forth.

2. The combination of the series of standpipes conj unctively forming a water-back for the {ire-box, circulating pipes, some of which are located above the tire box and others at the rear, each stand pipe and its circulating pipes forming a section, eduction pipes located above the stand-pipes, spaced pipes connecting the eduction pipes and series of stand pipes, and arranged .to permit the passage of the products of combustion between thenrand over the series of stand pipes, substantially as set forth.

3. In a water-tube boiler, a group of sections, each section being separate and distinct from the other, and stand-pipes provided with circulating-pipes, said stand-pipes. being arranged closely together and conJ un ctively forming a water-back for the Firebox, and said circulating pipes being staggered and arranged in pairs so that the top pipes of the pairs on one side of each stand pipe will .be opposite the bottom pipes of the pairs on the opposite side thereof,y substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES S. HGPKINS. Witnesses:

E. SoBKwiAK, J oHN KING.

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