US523672A - Boiler - Google Patents

Description

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-J. J'. LONG.

BQILER.

No. 523,672. Petentea July 31,1894.

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JEREMIA-H J. LONGq'OFCHICAGO, ILLINOIS.

BDI LE R SPECIFICATIONforming' part of Letters iPatentNlo. 523,672, dated Julyv31', 1894.A

Application'iiled-Decembez-JZS'1893. SerlalrNo. 4941517. (Normodel.)

v To MZ-whomA #may concern/.-

I I Se ,it yknow'ntthat I, JEREMIAHy J. LONG, a citlzenfof the United States,'residinglat Cl1icago, HCook countyylllinois, have invented.

certainnew and useful Im-provements in Boilers, of which the following-is aspecication.

The object of my inventionis to provide a simple and efficient boiler of the type commonly known as the water tube boiler, and capable of use either'for vhot-water systems or for the generation of steam.

My. boiler is designed to securethe advantages of a rapid heating boiler having a per-Y fectcirculation, and avoiding the injuriousv effects of heat, as experienced in other forms of boiler, upon the rolled ends of the water tubes. f

By the use of my invention, I am enabled to constructa boiler both durable and economical in construction and operation; and

my Ainventionconsists in the features and de` tails of construction hereinafter described and d claimed. y

In the drawings, Figure l is a vertical/section of my improved boiler; Fig. 2 a cross sectional viewof my boiler, online 2 2 of Fig.

l; Fig. 3 an elevation of two water tubes enlarged to showy the partitions therebetween; and Fig. 4a sectional' view, taken on line 4 of Fig. 3.

In constructing my improved boiler, I make preferably a cylindrical outer shell or casing, A, of,A suitable material-preferably boiler iron-and resting upon any suitable base or support, B. Within the base are arranged the usual grate bars, b, with an ordinary fire pot, A', located above them. The upper llue head, C, is made preferably of iron and adapted to cover the open end of the outer shell, and into it are rolled the upper ends of a series of vertical water tubes, c c c2, of suitable number and dimensions. Upon the head is secured a curved supplemental head, E, whereby a steam dome or chamber is formed above the ue head and at the top of the boiler.v The lower ends of the tubes are in like manner rolled into another fluehead, D, to which is secured a similar supplemental head or plate, d, forming a water chamber at the bottom of the boiler and below the lower ends of the water tubes situated adjacent to the fire chamber and This chamber is' communicates with the tubes. The *rolled* ends ofthe tubes'are not,l therefore; exposed to the intense heat of thefire," beingfasur-v rounded with water, and-they are consequently rendered more Adurable in use.' Surrounding the tubes I preferably arrange an inner shell-or casing, e, having openings 'atl its sidesfanfd near the top thereof, to ,accom-v modate suitable smoke iiues, F F, which pass through the outer shell, as indicated-"in',tllij"y drawings.` Preferably throughthe centerbf the water chamber, an opening or liue,' Gr, is provided, allowingzcommunication from, the fire chamber to the water tubes andto theiniv terior of the shell. s

y For the purpose of supplying .fue'lto the magazine', hoppers, a, are located at suitable points around the outershell and communicate with' the interior.` These hoppers are normally closed by doors, axas indicated'in the drawings, where the lire chamber and magazine are shown lfilled with fuel.v U n A water-'inlet pipe, H, enters the bottom of the water chamber,'and an outlet pipe,`C', is provided at theftop of the upper heador dome, or at any other i suitable pointv as lder:l sired. This outlet pipe is for the passage of steamer hot water as 'thecase' maybe, ldepending upon whether the boiler "is used "as a` 'hot water boiler or asa steam generator.

The water tubesmay be of any desired nu'ml" ber, and are arranged in sets'orserie's,`pref erably along the circumference of circles down from the center of the boiler, that is to say, substantially, though not necessarily,

equi-distant from the center, although I do not wish to be yunderstood as unduly limiting myself to such exact location and arrangement of tubes, as some of the tubes of the same series may be arranged nearer to the center than others. v Between the tubes of each series are secured partitions, I, K, which are a suitable length shorter than the tubes. These partitions consist of straight metallic strips, having their edges preferably turned at an angle to conform to the shape ,of the tube. In order to secure these partitions to the tubes, I provide suitable clamps, j, arranged preferably near the top and bottom, respectively, and consisting of a short strip, of construction similar to the partitions and clamped thereto by bolts, as shown in detail IOO in Fig. 4 of the drawings. Any other construction of partition and other means of clamping to the tubes may be adopted and still be within the scope of my invention.'

In the drawings I have shown a preferred form of construction of boiler in which the iirst series of tubes is unprovided with partitions, but the adjacent set or series is provided with partitions, J. These partitions extend to within a short distance from the top of the tube chamber or head, C, leaving a space or passage, while the partitions, K, on the next adjacent series of tubes extend from the top to within a short distance `from the bottom thereof, leaving a similar space or passage therebelow. In this manner, there is formed a series of concentric chambers communicating with each other, in such manner that theflames, heated gases, dac., must traverse their entire length before escaping from the smoke lines, F, F. The flames, gases, dac., from the tire chamber pass through the opening, G, striking the first series of tubes in their upward passage, and then pass over the top of the partitions, J, near the top of the boiler, and are then deflected downward between the second and the third series of tubes and returned to the base of the boiler, passing under the partitions, K, entering the next and last chamber, and finding exit through the ues, F, after passing up alongside of the last series of tubes.

Any number of series of water tubes may be used, `and thereby a corresponding number of chambers made between the series of tubes. i

The advantages secured by my style of boiler will be readily apparent to those skilled in the art of boiler making. One of the greatest difficulties experienced in the use of boil ers is the burning out of the tubes where they i are rolled into the head, and where the heat which acts directly upon them in all other forms is most intense. In my boiler, the ends of the tubes being surrounded by a water chamber are protected, imparting longer life to the tubes and insuring greater durability to the boiler. Furthermore, with the use of the partitions, I am enabled to secure a larger heating surface, and to utilize the iames, heated gases, dac., to their fullest extent without interfering with the draft. In every respect I claim that my boiler is thoroughly efficient, and simple in construction and operation, most economical in the matter of consumption of fuel, by reason of the partitions between the tubes, and more durable than any other type by reason of the protection afforded to the tubes.

Although I have shown my boiler in the drawings as intended to be used for the generation of steam, it will be understood that it can be advantageously used in connection with hot water systems by simply filling up the boiler and circuit pipes with water, and I contemplate sc using it. Nor do I wish to be understood as limiting myself to the precise location and arrangement of the partitions shown in the drawings; and although I have shown more or 'less precise forms and details of construction, I do not intendto undulylimit myself thereto, except as expressly specified in the claim, as I desire to deviate therefrom, and contemplate changes in form, proportion of parts and the substitution of equivalents, as circumstances may suggest or render expedient, without departing from the spirit of my invention.

What I regard as new, and desire to secure by Letters Patent, is

In a boiler the combination of a shell, upper and lower drums arranged within the shell, a series of water tubes communicating with the drums, concentric cylindrical partitions arranged among the tubes, said partitions being provided with yopenings alternately at the top and bottom and a combustion chamber arranged beneath the lower drum, substantially as described.

JEREMIAH J. LONG.

Witnesses:

GEORGE I-IIBBEN, SAMUEL E. HIBBEN.

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