USRE4082E - for himself - Google Patents

Description

ed July 26, 1870.

Reissu Steam Boiler.

. magma new c mm,

Hj B. noo'r, FOR HIMSELF, AND THOMAS c. PATON, ASSIGNEEOF JOHN B. ROOT, on NEW YORK, N. Y. r

Patent No. 14,146, antiseru 4, 1868; am No. 4,082, dated Jul 26,1870.

Drvrslox A.

-Q'... nsrnovmirr Ill STEAK-GENERATORS.

'lhslemrmtointhmwsrateutmdmnhngpnheltnesm.

lhellwhomilmconccm: v

it known that 1, Joan B. ROO of the city, State of NewYo -k, have invented certain nsefullmprovements in Steam-Boilers and, dohereby declare that the following is a in", clear, exact descrlptionot the same, reference being bad the. seeompanyilgg drawing. a 71B what are cal water-tube steam-boilers, that ish I) steam-boilers, the waterespaces of which consh at W or incliueditnbes, and in which the tube or tubes furthest fiom the fire, or the upsome ottheri, may constitute steam- L some better provision than has heretofm P made is necessary 'forobtaining dry steam, separating from the steam the water thatis ed by or with it to-thesteam-room or steam rum. It into-make such provisions that is the principal slidect of this invention, and, with this end-in view,

1 @he invention in a system of connections theends uf the tubes, with the corresponding dds of those above and below, or those nearer to and ii; Nether from the fire, whereby there is formed a serf of chambers, with contracted and preferably tori tlsons communications, which constitute the steam ofthe boiler, and whereby the steam and the m can-led up with it, in passing through the said dlslnbers and communications, from one tube to we! above it, are met by opposing surfaces, and

" separate, by the retardationof the currents C-psssgeol' the water, and the water is permitted to mm, while the steam passes onward to the upper ligurc 1, in the drawing, represents a longitudinal flied-section ofa boiler are fitted and secured, to connect the main or water- .tubes with each other. i

' not only the water-space of the-boiler, but that portions of the internal spaces of such tubes, or of some of them, may also constitute the chambers, which. are one of the elements of my invention, and between which the return-pipes or bends form the contracted and tortuous communications. With the main water-tubes there may be also cross water-pipes connected therewith by means of returnpipes or bends, as aforesaid-and arranged to'communicate with said tubes, or certain of them, attheir ends, without breaking the continuity of the tubes.

A A represent tubes, made of wrought iron or other suitable metal, of any proper length, diameter, or thickness of metal, and of any desired number, arranged to lie one above another, and of which there may be several series, lying side by'side, with due or air-spaces between them or around each of such tubes. I

Such tubes are placed in an inclined position to the horizomas shown in fig. 1, sloping upwardly from the rear toward and over the fire place, by which arrang ment the water-line of the boiler may cross the several tubes and a portion of the internal space of such tubes, orof the upper series or ties of tubes above the water-line, and thus constitutes a steam-chamber.

Each and every one of such tubes A A are secur-i ed or fitted, at their opposite ends, with independent plates or blocks B B, ot'square, or pamllelogramie, or

- other form, which form the heads of 'such tubes, and

,1 'lfignre2, an end view'thereof, wi a D removed; and 1 3, a transverse'section of the same through which, when combined and in their'places, constitute the ends or general heads of the boiler, and through which the connections and communications of the tubes A A with each other, iu each vertical series, are

A :2, shown in fig.-1.

.' Similar letters of reference indicate corresponding 51 in the several figures.

The boiler consists in a: number of separate tubes Qntslniug the water tob heated, and which are arin tiers, one above the other, over the fire-place er furnace, the fire playing outside of the tubes, such tubes being connected with each other at each end, by of return-pipes or bonds communicating with tum one above the other, in the heads of the connecting each tube with the one above below it, whereby a circulation is kept up, foamnted, and the steam kept drier.

ends of the boiler are constructed of a series of flutes or separate heads, of square, or parallelogramic, other ,a separate plate or head being fitted to end 'ofesch main tube,'and serving. by means of established, by means of the retnmpipes, bends, or

- chambers, hereafter described.

It preferred, the tubes A A may be of cast-metal with the plates or heads B B cast thereou,

To make or cfiect the connection and communication between the tubes A A, each plate or head B B is provided or constructed with apertures b b, the one lying above the other, and around each of such apertures is made an annular socket, c, within which may be inserted an India-rubber ring, 41, or other packing, and into these sockets the ends of the return-pipes or bends cc are fitted, said return-pipes or bends connccting the upper aperture b, at each end of the one tube 'A, with the lower aperture 11, at the same end of of the next tube A, above, and being secured or held to their places by clamping-bars D D, lapping over or on lugs or projections e s, and'i'asteued by nuts and stud- B, and return-pipes or bendsC C and G G, arid' likewise main-pipes or tubes A A.

bolts f, connected with the plates or heads B B,.such clamping-bars being preferably so constructed and arranged as that any one bar serves to bear 'on or hold two of the return-pipes or bends O O.

In fig. 2, one of the return-pipes or bends is omit-' ted, and another represented as broken, toexpose the apertures b b and sockets c c to view. j

Gross-pipes E E F F are or may be arranged above and below the tubes A A at opposite ends, which cross-pipes should be connected with the upper and 1 lower rows of the tubes A A, by or through bends or scribed, 80 that all the clamps or clamping-bar's may 'be alike,.as also all the plates, or blocks, or heads B By such similarity or duplication of parts, therev is secured, not only economy; of construction, but in creased facility is provided for fitting, changing, or renewing of parts, and extending or diminishing, by increasing or lessening the number of tubes, the capacity of the boiler, at pleasure.

I By this construction, also, it will readily he perceived that any of the tubes A A'may be removed without disturbing the others. p

The return-pipes or bends, being of much smaller caliber than the. tubes A A, may he made light, and will be strong enough,when of cast-iron, to prevent them bursting in advance of or sooner than the tubes A A, while the tubes A A, not being connected either with each other or the cross-pipes, excepting through the end plates or heads B B, are not cut away or weakened If desired, thelowerarrns or legs of the return-pipes or bends may be made longer than the upper ones, so

as to admit, in an inclined position of the boiler, as represented, of the ends of the tubes A A and their plates or heads B B, lying in a vertical plane.

' In some cases the upper E of the lower cross-pipes may be dispensed with, the same serving mainly as a bearer; also,.where a steam-drum (shown in dotted outlines) is not used, or under other circumstances the lower. one, F, of the upper cross-pipes may likewise be omitted, leaving the upper one, F, of such pipes to answer as a steam chest or drum, and, indeed, both such upper cross-pipes F F, and the steam-drum may be omitted, as the upper ends of the upper rows of the main or water-tubes A A may, from their inclined position, constitute of themselves a steam-chest or drum.

The-boiler generally, at least at its sides, may be set in brick-work or other setting,"but its ends, it desired, be covered with sheet-iron or other jackets, to prevent loss, by radiation from said ends and the return-pipes or bends.

From this description it will be seen that the system here shown of retnm-pipes or bends, which form contracted and tortuous communications between the chambers formed by the tubes A A, as well as between the heads B B, and the consequence of this is,

that the water which is carried up by and -uith the steam, in passing through said chambers and contracted and tortuous communications, which constitute the steam uptake, has its momentum so reduced, as

water always has in passing through chambered passages, or passages of alternately larger and smaller area,

- the steam rip-take.

or through tortuous passages, that a violent upward currentof water is prevented, and it separates from the steam, and falls, by gravitation, and so returns tethelower portion of the tubes.

The upward current of water isalso obstruated and checked by its striking against the heads B B of the tubes, which present surfaces directly opposed to the current, and thus caused to fall.

It will he observed that not only are such opposing surfaces presented by the inner surfaces of the heads B B, but by portions of theouter surfaces which surround the apertures b b, such apertures being smaller than the interiors of the return-pipes or bends.

The water, being thus thrown back, the steam reaches the upper portions of the boiler or tubes comparatively dry, and hence it will be generally, except where for any reason it may be necessary to keep'a large volume ofsteam always in reserve, practicable to dispense with the large steam-drum or reservoirs, and to construct the whole steam-space of the boiler of tubes, thereby making it stronger and less liable to. explode, but preserving uniformity of parts throughout.

In cases where it may be thought best to use a large steam-drum or reservoir, and to carry the waterline entirely to the top of the tubes,'using no part of them for steam-room, the effect of thetortuousfoomrn'unications and opposing surfaces of the chamberpassages will be thesame,-viz., that of preventing the;

water from being projected with great force or in large quantities into the steam-drum.

This system of chambers and contracted and tortuous communications not only provides for obtaining. dry steam, as described, but also provides for aperfect circulation of water in the lower part of the boiler, and for the free escape, through the water, of the steam, as fast as it is generated, in contact with the heated surfaces of the tubes, and also diminishes the tendency of the water to be carried up with the steam.

'I am aware that water-tube boilers have been constructed with a contracted outlet from the tubes into' I, therefore, do not lay claim to the vcontracted outlet from the tubes into a general rip-take for all the tubes, or a part thereof bl it- What I claim as my invention, and desire to secure by Letters Patent, is p 1. The construction of the steam np-take of a watertube boiler of a series of chambers and contracted communications, whereby the passage of the water with the steam from the lower to the upper tubes is retarded, substantially as herein described.

2. The connection of the tubes of a water-tube boiler, at their corresponding ends, by a system of 7 connections, whereby opposing surfaces are presented to the upward current of water and steam, for the purpose of obstructing the passage of the water, substantially as herein described.

3. The connection of the corresponding ends of the tubes, .by means of tortuous communications, whereby the steam and water passing through said communications are caused to make a tortuous circuit, in their upward course from one tube to another, withoutpassing longitudinally through the tubes, substantially as hereiudescribed.

4. The combination with the water-tubes A A of the return-pipes or bends G 0, connecting each tube at each end with one above and one below it, substantiallyas herein described.

' JOHN B. ROOT.

Witnesses;

HENRY T. Bnowx, FRED. Ha nes.

Images