USRE4083E - John b - Google Patents

Description

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JOHN B. ROOT, FOR HIMSELF. AND THOMAS C. M. PATON; ASSIGNEE OF JOHN B. ROOT, OF NEW YORK, NYY.

Letters .Patent No. F4,146, dated February 4, 1868; reissue l" 4,083, dated July 26, 1870.

Division B. s

IMPROVEMENT IN STEAH-GENERATORS.

2h Bchdule referred to in these Lettenvatent und making part of the lame.

' To au whom it may concern.-

full, clear, and exact description of the same, reference being had to the accompanying drawing.

This invention relates to what are known as watertubesteam-boilers, that is to say, steam-boilers, the waag-spaces of which consist of horizontal or inclined tu .l

The accompanying drawing represents a boiler constructed according to my invention.

Figure 1 represents a longitudinal vertical section of a boiler;

Figure 2, an end view thereof, with a portion of one of the connections removed; and

Figure 3, a transverse section of the same through the line :t x, shown in iig. 1.

Similar letters of reference indicate corresponding parts ln the several figures.

The boiler consists in a number of separate tubes containing the water to be heated, and which are arranged in tiers one above the other over the fire-place or furnace, the fire playing outside ofthe tubes, such tubes being connected at each end, each with the one immediately above and one immediately below it, and by'which means a circulation is kept up, foaming prevented, and the steam kept drier.

The ends of the boiler are constructed of a series of plates or separate heads of square or parallelogrammic or otherfform, a separate plate or head being titted to each end of each main tube, andserviug, by means' of apertures therein, and by return-pipes or bends, or their equivalents, to connect the main or water-tubes with each other and form tortnous communications.

f Such water-tubes are also placed in an inclined position to the horizon, such that the water-line of -the boiler may cross such tubes, so that they form not only the water-space of the boiler, but that portions of the internal spaces ot' such tubes, or ot some of them, will also constitute steam-chambers.

' The return-pipes or bends are attached to the heads 0f the several water-tubes by free socket-joints provided with packing and outside clamps carried and secured by stud-bolts, whereby every provision is made for expansion of the parts and the return-pipes allowed to tip or twist without straining the main tubes.

With'the main water-tubes there may be also cross water-pipes connected therewith hy means of returnpipes or bends, as aforesaid, and arranged to communiente with said tubes, or certain of them, at their ends, without breaking the continuity of the tubes."

A A represent tubes of wrought ironor othersuitable metal, of any proper length, diameter, or thickness of metal, and of any desired number, arranged to lie one above the otl1er,.and of which there may be several series lying side by side, with flue or airspaces between vthem or around each of such tubes.

Such tubes are placed in au inclined position to the horizon, as shown in fig. 1, sloping upwardly from the rear toward and over the tire-place, by which arrangement the water-line of the boiler may cross the several tubes, and a portion of the internal space of such tubes or of theupper series or tiers of tubes, is above the water-line, and thus consttutea steam-chamber.

Each and every one ot' such tubes A A is secured or fitted at its opposite ends into independent lates or blocks, B B, of square or paralleiogrammic or ther form, which form the heads ot' such tubes, and which, when combined and in their places, constitute the ends or general head ofthe boiler, and through which' the connections and communications bt thejtubes A A with each other in each vvertical series are established, by means off'the return pipes, bends, or chambers hereafter described.

Il' preferred, the tubes A A may be ofcast metal, with the plates or heads-B B cast thereon.

To make or eiiect theroonnection and communication between the tubes A A,each plate or Ahead 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 vwhich may be inserted an India-rubber ring, d, or other packing, and into these sockets the ends vof" the returnpipes or bends C C are fitted, said return-pipes or bends connecting the upper apertureI b at each end ot' the' one tube A, with the lower aperture b at the same end of the next tube A above, and being secured or held in their places by clamping-bars, D D, lapping over or on lugs or projections e e, and fastened by nuts and stud-bo1ts,f, connected with thc plates or heads B B, such clamping-bars being preferably so constructed and arranged as that any one bar serves tobear on 'or hold two of the return-pipes on bends O O In iig. 2 one of the return-pipes or bends is omitted and another lrepresented as broken, to expose the apertures b b and sockets o c to view.

Cross-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 upperand lower, rows of `the tubes A A by or through bends or pipes, Cl C', connecting the nearest of the apertures b of said tubes with apertures g in a similar-socketed manner to that used in establishing the connection of the return-pipes or bends O C, and being similarly held or secured by Yclamping-bars andlstud-bolts con nected with the cross-pipes, such clampingbars` being ananged to lie at right angles to those previously de scribed, so' that all the clamps or clamping-bars may he alike, as also alt-tbe plates or blocks or heads B B and return-pipes or bends C G and C C', and likewise main pipes or tubes A A.

By such similarity or duplication of parts there is secured not only economy of construction but increased facility is provided for fitting, changing, and renewing of parts and extending or diminishing by increasing or lessening the number of tubes, the capacity of the boiler at pleasure. leadily be perceived that any of the tubes A A may be removed without disturbing the others.

The return-pipes or bends 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.

1t' desired, the lower arms or legs of the returnpipes or beudsmay be made longer than the upper ones, so as to admit, in an inclined position o'i' the boiler, as represented, of the ends of the tubes A A,

and their plates or heads B B lying in a vertical plane.

It may be further noticed as a desirable or important feature that by the socketed and clamped attach- By this construction, also, it will ment of the return-pipes-or bends C C, provision is made for the unequal expansion and tipping 'or twisting of such pipes or bends without straining on the tubes A A. v

A boiler constructed as described may not only be got up cheap, light, compact, and durable, and be economical to work, but such a boiler is secure against serious or general explosion of its parts.

I do not claim iu this division the peculiar features of construction here represented and described, which have been made the subject of division A of this reissue.

What I claim as lny invention, is-

1. The return-tubes C, having free or socket joints connected or held to their places byY independent out .side clamps and stud-bolts and' nuts, or their equivalents, substantially as and for the purpose herein set forth.

2. The cross-pipes E E' F F', or either of them, connected with the tubes A Aat their ends by means of independent pipes or bends C C, fastened by clamps and bolts, essentially as shown, for the purpose set forth.

JOHN B. Boor.

Witnesses:

HENRY T. BROWN, FRED. Bulnes.

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